/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/ldv-regression/test21-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 13:37:46,499 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 13:37:46,502 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 13:37:46,548 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 13:37:46,577 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 13:37:46,579 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 13:37:46,581 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 13:37:46,583 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 13:37:46,586 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 13:37:46,587 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 13:37:46,594 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 13:37:46,602 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 13:37:46,604 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 13:37:46,606 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 13:37:46,608 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 13:37:46,610 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 13:37:46,618 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 13:37:46,629 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 13:37:46,630 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 13:37:46,631 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 13:37:46,632 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 [2021-02-23 13:37:46,690 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 13:37:46,690 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 13:37:46,695 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-23 13:37:46,695 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-23 13:37:46,695 INFO L138 SettingsManager]: * Use SBE=true [2021-02-23 13:37:46,696 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 13:37:46,696 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 13:37:46,696 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 13:37:46,696 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 13:37:46,697 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 13:37:46,698 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 13:37:46,698 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 13:37:46,698 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 13:37:46,699 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 13:37:46,699 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 13:37:46,699 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 13:37:46,699 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 13:37:46,699 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 13:37:46,700 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-23 13:37:46,700 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 13:37:46,700 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 13:37:46,701 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 13:37:46,701 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-23 13:37:46,701 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-23 13:37:46,701 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-23 13:37:46,701 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-23 13:37:46,702 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 13:37:46,702 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-23 13:37:46,702 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 13:37:47,107 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 13:37:47,139 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 13:37:47,142 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 13:37:47,143 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 13:37:47,144 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 13:37:47,145 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test21-1.c [2021-02-23 13:37:47,256 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a60e58753/c44e30c16c5049908ffb04e538910592/FLAGb6baef8fb [2021-02-23 13:37:47,932 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 13:37:47,932 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test21-1.c [2021-02-23 13:37:47,940 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a60e58753/c44e30c16c5049908ffb04e538910592/FLAGb6baef8fb [2021-02-23 13:37:48,326 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a60e58753/c44e30c16c5049908ffb04e538910592 [2021-02-23 13:37:48,330 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 13:37:48,346 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 13:37:48,351 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 13:37:48,352 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 13:37:48,356 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 13:37:48,357 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:37:48" (1/1) ... [2021-02-23 13:37:48,359 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3231f04d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:37:48, skipping insertion in model container [2021-02-23 13:37:48,360 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:37:48" (1/1) ... [2021-02-23 13:37:48,371 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 13:37:48,393 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 13:37:48,642 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test21-1.c[892,905] [2021-02-23 13:37:48,647 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:37:48,658 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 13:37:48,679 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test21-1.c[892,905] [2021-02-23 13:37:48,680 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:37:48,698 INFO L208 MainTranslator]: Completed translation [2021-02-23 13:37:48,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:37:48 WrapperNode [2021-02-23 13:37:48,699 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 13:37:48,700 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 13:37:48,700 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 13:37:48,700 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 13:37:48,714 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:37:48" (1/1) ... [2021-02-23 13:37:48,714 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:37:48" (1/1) ... [2021-02-23 13:37:48,722 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:37:48" (1/1) ... [2021-02-23 13:37:48,723 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:37:48" (1/1) ... [2021-02-23 13:37:48,732 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:37:48" (1/1) ... [2021-02-23 13:37:48,734 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:37:48" (1/1) ... [2021-02-23 13:37:48,736 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:37:48" (1/1) ... [2021-02-23 13:37:48,738 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 13:37:48,739 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 13:37:48,740 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 13:37:48,740 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 13:37:48,741 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:37:48" (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 [2021-02-23 13:37:48,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 13:37:48,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 13:37:48,849 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 13:37:48,850 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2021-02-23 13:37:48,850 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy [2021-02-23 13:37:48,850 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2021-02-23 13:37:48,850 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 13:37:48,850 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 13:37:48,851 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 13:37:48,851 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 13:37:48,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 13:37:48,851 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 13:37:48,852 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2021-02-23 13:37:48,852 INFO L130 BoogieDeclarations]: Found specification of procedure init [2021-02-23 13:37:48,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 13:37:48,853 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy [2021-02-23 13:37:48,854 INFO L130 BoogieDeclarations]: Found specification of procedure check [2021-02-23 13:37:48,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 13:37:48,854 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 13:37:48,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 13:37:48,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 13:37:48,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 13:37:48,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 13:37:49,258 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 13:37:49,259 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-23 13:37:49,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:37:49 BoogieIcfgContainer [2021-02-23 13:37:49,260 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 13:37:49,267 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 13:37:49,268 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 13:37:49,275 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 13:37:49,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 01:37:48" (1/3) ... [2021-02-23 13:37:49,276 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c7f4b17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:37:49, skipping insertion in model container [2021-02-23 13:37:49,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:37:48" (2/3) ... [2021-02-23 13:37:49,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c7f4b17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:37:49, skipping insertion in model container [2021-02-23 13:37:49,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:37:49" (3/3) ... [2021-02-23 13:37:49,279 INFO L111 eAbstractionObserver]: Analyzing ICFG test21-1.c [2021-02-23 13:37:49,286 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-23 13:37:49,291 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 13:37:49,313 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 13:37:49,342 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 13:37:49,343 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 13:37:49,343 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-23 13:37:49,343 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 13:37:49,343 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 13:37:49,343 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 13:37:49,344 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 13:37:49,344 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 13:37:49,409 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2021-02-23 13:37:49,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-02-23 13:37:49,416 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:37:49,418 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 13:37:49,418 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:37:49,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:37:49,432 INFO L82 PathProgramCache]: Analyzing trace with hash -792565415, now seen corresponding path program 1 times [2021-02-23 13:37:49,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:37:49,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81857883] [2021-02-23 13:37:49,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:37:49,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:37:49,853 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:37:49,855 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:37:49,861 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:37:49,862 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:37:49,879 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:37:49,880 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:37:49,891 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:37:49,892 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:37:49,902 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:37:49,904 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:37:49,915 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:37:49,916 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:37:49,925 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:37:49,925 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:37:49,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:37:49,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:37:49,990 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:37:49,990 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:37:50,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-02-23 13:37:50,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:37:50,012 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:37:50,012 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:37:50,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-23 13:37:50,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:37:50,023 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:37:50,024 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:37:50,041 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:37:50,042 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:37:50,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-23 13:37:50,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:37:50,071 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:37:50,072 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:37:50,073 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:37:50,074 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:37:50,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-02-23 13:37:50,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:37:50,094 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:37:50,095 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-23 13:37:50,123 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-02-23 13:37:50,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81857883] [2021-02-23 13:37:50,125 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:37:50,125 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-02-23 13:37:50,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935099370] [2021-02-23 13:37:50,131 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-23 13:37:50,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:37:50,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-23 13:37:50,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-02-23 13:37:50,150 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 12 states. [2021-02-23 13:37:50,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:37:50,990 INFO L93 Difference]: Finished difference Result 56 states and 65 transitions. [2021-02-23 13:37:50,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-23 13:37:50,992 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 29 [2021-02-23 13:37:50,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:37:50,999 INFO L225 Difference]: With dead ends: 56 [2021-02-23 13:37:50,999 INFO L226 Difference]: Without dead ends: 0 [2021-02-23 13:37:51,004 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=84, Invalid=422, Unknown=0, NotChecked=0, Total=506 [2021-02-23 13:37:51,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-23 13:37:51,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-23 13:37:51,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-23 13:37:51,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-23 13:37:51,030 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2021-02-23 13:37:51,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:37:51,031 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-23 13:37:51,031 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-23 13:37:51,031 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-23 13:37:51,031 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-23 13:37:51,032 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 13:37:51,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-23 13:37:51,274 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-02-23 13:37:51,274 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-02-23 13:37:51,275 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-02-23 13:37:51,275 INFO L189 CegarLoopUtils]: For program point initEXIT(lines 13 20) no Hoare annotation was computed. [2021-02-23 13:37:51,275 INFO L185 CegarLoopUtils]: At program point initENTRY(lines 13 20) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2021-02-23 13:37:51,275 INFO L189 CegarLoopUtils]: For program point initFINAL(lines 13 20) no Hoare annotation was computed. [2021-02-23 13:37:51,275 INFO L189 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-02-23 13:37:51,276 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |old(~#d1~0.base)| |~#d1~0.base|) (= |old(~#d1~0.offset)| |~#d1~0.offset|) (= |old(~#d2~0.offset)| |~#d2~0.offset|) (= |old(#t~string4.offset)| |#t~string4.offset|) (= |old(#valid)| |#valid|) (= |old(~#d2~0.base)| |~#d2~0.base|) (= |old(#NULL.base)| |#NULL.base|) (= |#t~string5.base| |old(#t~string5.base)|) (= |old(#t~string6.offset)| |#t~string6.offset|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2021-02-23 13:37:51,276 INFO L189 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-02-23 13:37:51,276 INFO L189 CegarLoopUtils]: For program point get_dummyFINAL(lines 22 25) no Hoare annotation was computed. [2021-02-23 13:37:51,276 INFO L192 CegarLoopUtils]: At program point get_dummyENTRY(lines 22 25) the Hoare annotation is: true [2021-02-23 13:37:51,276 INFO L189 CegarLoopUtils]: For program point L24-1(line 24) no Hoare annotation was computed. [2021-02-23 13:37:51,276 INFO L189 CegarLoopUtils]: For program point get_dummyEXIT(lines 22 25) no Hoare annotation was computed. [2021-02-23 13:37:51,277 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-02-23 13:37:51,277 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-23 13:37:51,277 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-23 13:37:51,277 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-02-23 13:37:51,277 INFO L189 CegarLoopUtils]: For program point L35-2(line 35) no Hoare annotation was computed. [2021-02-23 13:37:51,277 INFO L189 CegarLoopUtils]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 44) no Hoare annotation was computed. [2021-02-23 13:37:51,278 INFO L185 CegarLoopUtils]: At program point mainENTRY(lines 32 46) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2021-02-23 13:37:51,278 INFO L189 CegarLoopUtils]: For program point mainEXIT(lines 32 46) no Hoare annotation was computed. [2021-02-23 13:37:51,278 INFO L189 CegarLoopUtils]: For program point mainFINAL(lines 32 46) no Hoare annotation was computed. [2021-02-23 13:37:51,278 INFO L185 CegarLoopUtils]: At program point L38(lines 33 46) the Hoare annotation is: false [2021-02-23 13:37:51,278 INFO L185 CegarLoopUtils]: At program point L37(line 37) the Hoare annotation is: (and (= main_~pd2~0.offset main_~pd1~0.offset) (= main_~pd2~0.base main_~pd1~0.base)) [2021-02-23 13:37:51,279 INFO L189 CegarLoopUtils]: For program point L36(lines 36 40) no Hoare annotation was computed. [2021-02-23 13:37:51,279 INFO L189 CegarLoopUtils]: For program point L37-1(line 37) no Hoare annotation was computed. [2021-02-23 13:37:51,279 INFO L189 CegarLoopUtils]: For program point L35(line 35) no Hoare annotation was computed. [2021-02-23 13:37:51,279 INFO L189 CegarLoopUtils]: For program point L37-2(lines 37 39) no Hoare annotation was computed. [2021-02-23 13:37:51,279 INFO L192 CegarLoopUtils]: At program point L34(line 34) the Hoare annotation is: true [2021-02-23 13:37:51,279 INFO L192 CegarLoopUtils]: At program point L35-1(line 35) the Hoare annotation is: true [2021-02-23 13:37:51,279 INFO L189 CegarLoopUtils]: For program point L36-2(lines 36 40) no Hoare annotation was computed. [2021-02-23 13:37:51,280 INFO L192 CegarLoopUtils]: At program point checkENTRY(lines 27 30) the Hoare annotation is: true [2021-02-23 13:37:51,280 INFO L189 CegarLoopUtils]: For program point checkFINAL(lines 27 30) no Hoare annotation was computed. [2021-02-23 13:37:51,280 INFO L189 CegarLoopUtils]: For program point checkEXIT(lines 27 30) no Hoare annotation was computed. [2021-02-23 13:37:51,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 01:37:51 BoogieIcfgContainer [2021-02-23 13:37:51,291 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 13:37:51,292 INFO L168 Benchmark]: Toolchain (without parser) took 2959.30 ms. Allocated memory was 155.2 MB in the beginning and 189.8 MB in the end (delta: 34.6 MB). Free memory was 129.6 MB in the beginning and 96.6 MB in the end (delta: 33.0 MB). Peak memory consumption was 69.0 MB. Max. memory is 8.0 GB. [2021-02-23 13:37:51,293 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 125.8 MB. Free memory is still 81.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 13:37:51,294 INFO L168 Benchmark]: CACSL2BoogieTranslator took 347.82 ms. Allocated memory is still 155.2 MB. Free memory was 128.6 MB in the beginning and 118.8 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-23 13:37:51,295 INFO L168 Benchmark]: Boogie Preprocessor took 38.78 ms. Allocated memory is still 155.2 MB. Free memory was 118.8 MB in the beginning and 117.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-23 13:37:51,296 INFO L168 Benchmark]: RCFGBuilder took 521.08 ms. Allocated memory is still 155.2 MB. Free memory was 117.2 MB in the beginning and 100.8 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2021-02-23 13:37:51,297 INFO L168 Benchmark]: TraceAbstraction took 2023.37 ms. Allocated memory was 155.2 MB in the beginning and 189.8 MB in the end (delta: 34.6 MB). Free memory was 100.3 MB in the beginning and 96.6 MB in the end (delta: 3.7 MB). Peak memory consumption was 39.6 MB. Max. memory is 8.0 GB. [2021-02-23 13:37:51,300 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 125.8 MB. Free memory is still 81.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 347.82 ms. Allocated memory is still 155.2 MB. Free memory was 128.6 MB in the beginning and 118.8 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 38.78 ms. Allocated memory is still 155.2 MB. Free memory was 118.8 MB in the beginning and 117.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 521.08 ms. Allocated memory is still 155.2 MB. Free memory was 117.2 MB in the beginning and 100.8 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2023.37 ms. Allocated memory was 155.2 MB in the beginning and 189.8 MB in the end (delta: 34.6 MB). Free memory was 100.3 MB in the beginning and 96.6 MB in the end (delta: 3.7 MB). Peak memory consumption was 39.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 44]: 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: 33]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.6s, OverallIterations: 1, TraceHistogramMax: 2, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 15 SDtfs, 45 SDslu, 55 SDs, 0 SdLazy, 244 SolverSat, 37 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred 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, 14 PreInvPairs, 16 NumberOfFragments, 63 HoareAnnotationTreeSize, 14 FomulaSimplifications, 106 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 305 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 29 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 28 ConstructedInterpolants, 0 QuantifiedInterpolants, 4592 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 4/4 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...