/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/loops/trex01-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-19 17:59:20,610 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-19 17:59:20,614 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-19 17:59:20,652 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-19 17:59:20,653 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-19 17:59:20,655 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-19 17:59:20,657 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-19 17:59:20,659 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-19 17:59:20,662 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-19 17:59:20,663 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-19 17:59:20,665 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-19 17:59:20,666 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-19 17:59:20,667 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-19 17:59:20,668 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-19 17:59:20,669 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-19 17:59:20,671 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-19 17:59:20,672 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-19 17:59:20,673 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-19 17:59:20,676 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-19 17:59:20,678 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-19 17:59:20,680 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-19 17:59:20,682 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-19 17:59:20,683 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-19 17:59:20,685 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-19 17:59:20,688 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-19 17:59:20,721 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-19 17:59:20,725 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-19 17:59:20,726 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-19 17:59:20,727 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 17:59:20,762 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-19 17:59:20,762 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-19 17:59:20,764 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-19 17:59:20,765 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-19 17:59:20,765 INFO L138 SettingsManager]: * Use SBE=true [2021-02-19 17:59:20,766 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-19 17:59:20,766 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-19 17:59:20,766 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-19 17:59:20,766 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-19 17:59:20,766 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-19 17:59:20,768 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-19 17:59:20,768 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-19 17:59:20,768 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-19 17:59:20,768 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-19 17:59:20,768 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-19 17:59:20,769 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-19 17:59:20,769 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-19 17:59:20,769 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-19 17:59:20,769 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-19 17:59:20,770 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-19 17:59:20,770 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-19 17:59:20,770 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-19 17:59:20,770 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-19 17:59:20,770 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-19 17:59:20,771 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-19 17:59:20,771 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-19 17:59:20,771 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-19 17:59:20,771 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-19 17:59:20,772 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-19 17:59:21,208 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-19 17:59:21,255 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-19 17:59:21,258 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-19 17:59:21,260 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-19 17:59:21,261 INFO L275 PluginConnector]: CDTParser initialized [2021-02-19 17:59:21,262 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/trex01-2.i [2021-02-19 17:59:21,355 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8c14b90a/6ce0b0eade564cab9fd52ca568c86296/FLAG3475fb9e3 [2021-02-19 17:59:21,978 INFO L306 CDTParser]: Found 1 translation units. [2021-02-19 17:59:21,978 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/trex01-2.i [2021-02-19 17:59:21,987 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8c14b90a/6ce0b0eade564cab9fd52ca568c86296/FLAG3475fb9e3 [2021-02-19 17:59:22,322 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8c14b90a/6ce0b0eade564cab9fd52ca568c86296 [2021-02-19 17:59:22,327 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-19 17:59:22,341 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-19 17:59:22,344 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-19 17:59:22,344 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-19 17:59:22,349 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-19 17:59:22,350 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 05:59:22" (1/1) ... [2021-02-19 17:59:22,351 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a413235 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:59:22, skipping insertion in model container [2021-02-19 17:59:22,351 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 05:59:22" (1/1) ... [2021-02-19 17:59:22,361 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-19 17:59:22,380 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-19 17:59:22,558 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/trex01-2.i[895,908] [2021-02-19 17:59:22,576 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-19 17:59:22,587 INFO L203 MainTranslator]: Completed pre-run [2021-02-19 17:59:22,603 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/trex01-2.i[895,908] [2021-02-19 17:59:22,612 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-19 17:59:22,631 INFO L208 MainTranslator]: Completed translation [2021-02-19 17:59:22,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:59:22 WrapperNode [2021-02-19 17:59:22,632 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-19 17:59:22,633 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-19 17:59:22,634 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-19 17:59:22,634 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-19 17:59:22,647 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:59:22" (1/1) ... [2021-02-19 17:59:22,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:59:22" (1/1) ... [2021-02-19 17:59:22,657 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:59:22" (1/1) ... [2021-02-19 17:59:22,657 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:59:22" (1/1) ... [2021-02-19 17:59:22,664 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:59:22" (1/1) ... [2021-02-19 17:59:22,670 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:59:22" (1/1) ... [2021-02-19 17:59:22,672 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:59:22" (1/1) ... [2021-02-19 17:59:22,676 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-19 17:59:22,680 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-19 17:59:22,680 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-19 17:59:22,680 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-19 17:59:22,682 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:59:22" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-19 17:59:22,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-19 17:59:22,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-19 17:59:22,811 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-19 17:59:22,811 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-19 17:59:22,812 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-19 17:59:22,812 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-02-19 17:59:22,812 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-19 17:59:22,813 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-19 17:59:22,814 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-19 17:59:22,814 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-19 17:59:22,815 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-19 17:59:22,815 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-19 17:59:22,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-19 17:59:22,816 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-19 17:59:22,817 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-19 17:59:22,818 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2021-02-19 17:59:22,818 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-19 17:59:22,818 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-02-19 17:59:22,818 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-19 17:59:22,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-19 17:59:22,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-19 17:59:22,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-19 17:59:22,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-19 17:59:22,819 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-19 17:59:22,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-19 17:59:23,323 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-19 17:59:23,323 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-02-19 17:59:23,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 05:59:23 BoogieIcfgContainer [2021-02-19 17:59:23,326 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-19 17:59:23,331 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-19 17:59:23,331 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-19 17:59:23,338 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-19 17:59:23,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.02 05:59:22" (1/3) ... [2021-02-19 17:59:23,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23f0a0c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 05:59:23, skipping insertion in model container [2021-02-19 17:59:23,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:59:22" (2/3) ... [2021-02-19 17:59:23,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23f0a0c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 05:59:23, skipping insertion in model container [2021-02-19 17:59:23,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 05:59:23" (3/3) ... [2021-02-19 17:59:23,348 INFO L111 eAbstractionObserver]: Analyzing ICFG trex01-2.i [2021-02-19 17:59:23,364 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-19 17:59:23,373 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-19 17:59:23,392 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-19 17:59:23,421 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-19 17:59:23,422 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-19 17:59:23,422 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-19 17:59:23,422 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-19 17:59:23,422 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-19 17:59:23,422 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-19 17:59:23,423 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-19 17:59:23,423 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-19 17:59:23,442 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2021-02-19 17:59:23,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-02-19 17:59:23,449 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:59:23,450 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 17:59:23,450 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:59:23,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:59:23,457 INFO L82 PathProgramCache]: Analyzing trace with hash 1897834925, now seen corresponding path program 1 times [2021-02-19 17:59:23,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:59:23,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799491859] [2021-02-19 17:59:23,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:59:23,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:59:23,689 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:59:23,691 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:59:23,700 WARN L141 QuantifierPusher]: treesize reduction 11, result has 21.4 percent of original size [2021-02-19 17:59:23,701 WARN L147 QuantifierPusher]: treesize reduction 11, result has 21.4 percent of original size 3 [2021-02-19 17:59:23,715 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:59:23,716 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-19 17:59:23,723 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:59:23,724 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-19 17:59:23,733 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:59:23,734 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:59:23,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 17:59:23,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:59:23,782 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:59:23,783 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:59:23,787 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 17:59:23,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799491859] [2021-02-19 17:59:23,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 17:59:23,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-19 17:59:23,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221566959] [2021-02-19 17:59:23,796 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-19 17:59:23,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 17:59:23,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-19 17:59:23,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-19 17:59:23,815 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 6 states. [2021-02-19 17:59:24,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 17:59:24,222 INFO L93 Difference]: Finished difference Result 55 states and 78 transitions. [2021-02-19 17:59:24,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-19 17:59:24,224 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2021-02-19 17:59:24,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 17:59:24,229 INFO L225 Difference]: With dead ends: 55 [2021-02-19 17:59:24,230 INFO L226 Difference]: Without dead ends: 0 [2021-02-19 17:59:24,234 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-02-19 17:59:24,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-19 17:59:24,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-19 17:59:24,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-19 17:59:24,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-19 17:59:24,259 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2021-02-19 17:59:24,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 17:59:24,260 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-19 17:59:24,260 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-19 17:59:24,260 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-19 17:59:24,260 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-19 17:59:24,261 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-19 17:59:24,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-19 17:59:24,424 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2021-02-19 17:59:24,425 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2021-02-19 17:59:24,425 INFO L189 CegarLoopUtils]: For program point L12-1(line 12) no Hoare annotation was computed. [2021-02-19 17:59:24,428 INFO L189 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-02-19 17:59:24,428 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 17:59:24,429 INFO L189 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-02-19 17:59:24,429 INFO L189 CegarLoopUtils]: For program point L31(lines 25 47) no Hoare annotation was computed. [2021-02-19 17:59:24,429 INFO L189 CegarLoopUtils]: For program point L27(lines 27 29) no Hoare annotation was computed. [2021-02-19 17:59:24,429 INFO L189 CegarLoopUtils]: For program point fEXIT(lines 25 47) no Hoare annotation was computed. [2021-02-19 17:59:24,429 INFO L189 CegarLoopUtils]: For program point L38(lines 38 45) no Hoare annotation was computed. [2021-02-19 17:59:24,429 INFO L192 CegarLoopUtils]: At program point fENTRY(lines 25 47) the Hoare annotation is: true [2021-02-19 17:59:24,430 INFO L192 CegarLoopUtils]: At program point L38-2(lines 36 46) the Hoare annotation is: true [2021-02-19 17:59:24,430 INFO L189 CegarLoopUtils]: For program point L34(line 34) no Hoare annotation was computed. [2021-02-19 17:59:24,430 INFO L189 CegarLoopUtils]: For program point L36-2(lines 25 47) no Hoare annotation was computed. [2021-02-19 17:59:24,430 INFO L185 CegarLoopUtils]: At program point L30-2(line 30) the Hoare annotation is: (<= 1 f_~z~0) [2021-02-19 17:59:24,430 INFO L185 CegarLoopUtils]: At program point L30-3(line 30) the Hoare annotation is: (<= 1 f_~z~0) [2021-02-19 17:59:24,430 INFO L189 CegarLoopUtils]: For program point L39(lines 39 40) no Hoare annotation was computed. [2021-02-19 17:59:24,431 INFO L189 CegarLoopUtils]: For program point L35(line 35) no Hoare annotation was computed. [2021-02-19 17:59:24,431 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-02-19 17:59:24,431 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-19 17:59:24,433 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-19 17:59:24,433 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-02-19 17:59:24,433 INFO L189 CegarLoopUtils]: For program point L15(line 15) no Hoare annotation was computed. [2021-02-19 17:59:24,433 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2021-02-19 17:59:24,434 INFO L189 CegarLoopUtils]: For program point L15-2(lines 14 16) no Hoare annotation was computed. [2021-02-19 17:59:24,434 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2021-02-19 17:59:24,434 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 48 56) the Hoare annotation is: true [2021-02-19 17:59:24,434 INFO L189 CegarLoopUtils]: For program point mainFINAL(lines 48 56) no Hoare annotation was computed. [2021-02-19 17:59:24,434 INFO L189 CegarLoopUtils]: For program point mainEXIT(lines 48 56) no Hoare annotation was computed. [2021-02-19 17:59:24,434 INFO L192 CegarLoopUtils]: At program point L53(line 53) the Hoare annotation is: true [2021-02-19 17:59:24,435 INFO L189 CegarLoopUtils]: For program point L53-1(lines 50 54) no Hoare annotation was computed. [2021-02-19 17:59:24,435 INFO L192 CegarLoopUtils]: At program point L51(line 51) the Hoare annotation is: true [2021-02-19 17:59:24,438 INFO L189 CegarLoopUtils]: For program point L50(lines 50 54) no Hoare annotation was computed. [2021-02-19 17:59:24,438 INFO L189 CegarLoopUtils]: For program point L18-2(lines 17 22) no Hoare annotation was computed. [2021-02-19 17:59:24,438 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2021-02-19 17:59:24,439 INFO L189 CegarLoopUtils]: For program point __VERIFIER_assertEXIT(lines 17 22) no Hoare annotation was computed. [2021-02-19 17:59:24,439 INFO L189 CegarLoopUtils]: For program point L19(line 19) no Hoare annotation was computed. [2021-02-19 17:59:24,439 INFO L189 CegarLoopUtils]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-02-19 17:59:24,439 INFO L189 CegarLoopUtils]: For program point L18(lines 18 20) no Hoare annotation was computed. [2021-02-19 17:59:24,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.02 05:59:24 BoogieIcfgContainer [2021-02-19 17:59:24,459 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-19 17:59:24,461 INFO L168 Benchmark]: Toolchain (without parser) took 2130.63 ms. Allocated memory is still 161.5 MB. Free memory was 136.9 MB in the beginning and 99.8 MB in the end (delta: 37.1 MB). Peak memory consumption was 37.1 MB. Max. memory is 8.0 GB. [2021-02-19 17:59:24,462 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 161.5 MB. Free memory is still 135.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-19 17:59:24,463 INFO L168 Benchmark]: CACSL2BoogieTranslator took 288.65 ms. Allocated memory is still 161.5 MB. Free memory was 135.9 MB in the beginning and 125.6 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-19 17:59:24,467 INFO L168 Benchmark]: Boogie Preprocessor took 42.56 ms. Allocated memory is still 161.5 MB. Free memory was 125.6 MB in the beginning and 124.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-19 17:59:24,468 INFO L168 Benchmark]: RCFGBuilder took 645.82 ms. Allocated memory is still 161.5 MB. Free memory was 124.0 MB in the beginning and 107.2 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2021-02-19 17:59:24,469 INFO L168 Benchmark]: TraceAbstraction took 1128.55 ms. Allocated memory is still 161.5 MB. Free memory was 106.8 MB in the beginning and 99.8 MB in the end (delta: 7.0 MB). Peak memory consumption was 6.7 MB. Max. memory is 8.0 GB. [2021-02-19 17:59:24,473 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 161.5 MB. Free memory is still 135.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 288.65 ms. Allocated memory is still 161.5 MB. Free memory was 135.9 MB in the beginning and 125.6 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 42.56 ms. Allocated memory is still 161.5 MB. Free memory was 125.6 MB in the beginning and 124.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 645.82 ms. Allocated memory is still 161.5 MB. Free memory was 124.0 MB in the beginning and 107.2 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1128.55 ms. Allocated memory is still 161.5 MB. Free memory was 106.8 MB in the beginning and 99.8 MB in the end (delta: 7.0 MB). Peak memory consumption was 6.7 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: 36]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: 1 <= z - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.8s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 29 SDtfs, 46 SDslu, 29 SDs, 0 SdLazy, 80 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred 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, 11 LocationsWithAnnotation, 16 PreInvPairs, 22 NumberOfFragments, 39 HoareAnnotationTreeSize, 16 FomulaSimplifications, 58 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 202 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 700 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...