/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 12:34:35,088 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 12:34:35,090 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 12:34:35,120 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-02 12:34:35,121 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-02 12:34:35,123 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-02 12:34:35,125 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-02 12:34:35,129 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-02 12:34:35,130 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-02 12:34:35,137 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-02 12:34:35,137 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-02 12:34:35,138 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-02 12:34:35,138 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 12:34:35,139 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 12:34:35,139 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 12:34:35,140 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 12:34:35,140 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 12:34:35,141 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 12:34:35,141 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 12:34:35,142 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 12:34:35,143 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 12:34:35,144 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 12:34:35,146 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 12:34:35,147 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 12:34:35,153 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-05-02 12:34:35,153 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-05-02 12:34:35,153 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-05-02 12:34:35,154 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-05-02 12:34:35,154 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-05-02 12:34:35,155 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-05-02 12:34:35,155 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-05-02 12:34:35,155 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-05-02 12:34:35,156 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-05-02 12:34:35,156 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-05-02 12:34:35,157 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-05-02 12:34:35,157 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-05-02 12:34:35,157 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-05-02 12:34:35,157 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-05-02 12:34:35,158 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 12:34:35,158 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 12:34:35,159 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 12:34:35,159 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2021-05-02 12:34:35,173 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 12:34:35,173 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 12:34:35,174 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-02 12:34:35,174 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-02 12:34:35,174 INFO L138 SettingsManager]: * Use SBE=true [2021-05-02 12:34:35,174 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 12:34:35,175 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 12:34:35,175 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 12:34:35,175 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 12:34:35,175 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 12:34:35,175 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 12:34:35,175 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 12:34:35,175 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 12:34:35,175 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 12:34:35,176 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 12:34:35,176 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 12:34:35,176 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 12:34:35,176 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 12:34:35,176 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 12:34:35,176 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 12:34:35,176 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 12:34:35,176 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 12:34:35,176 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-02 12:34:35,177 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-02 12:34:35,177 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 12:34:35,177 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-02 12:34:35,177 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-02 12:34:35,177 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-05-02 12:34:35,177 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 12:34:35,425 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 12:34:35,444 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 12:34:35,445 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 12:34:35,446 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 12:34:35,447 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 12:34:35,447 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c [2021-05-02 12:34:35,494 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/486853f1a/c332620c0cb6481c9a3f2a0b9039988c/FLAG97f6f1f06 [2021-05-02 12:34:35,850 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 12:34:35,851 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c [2021-05-02 12:34:35,862 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/486853f1a/c332620c0cb6481c9a3f2a0b9039988c/FLAG97f6f1f06 [2021-05-02 12:34:35,878 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/486853f1a/c332620c0cb6481c9a3f2a0b9039988c [2021-05-02 12:34:35,881 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 12:34:35,882 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-02 12:34:35,885 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 12:34:35,885 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 12:34:35,888 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 12:34:35,889 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 12:34:35" (1/1) ... [2021-05-02 12:34:35,889 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50094e5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:34:35, skipping insertion in model container [2021-05-02 12:34:35,889 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 12:34:35" (1/1) ... [2021-05-02 12:34:35,894 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 12:34:35,910 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 12:34:36,036 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c[1238,1251] [2021-05-02 12:34:36,041 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 12:34:36,046 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 12:34:36,080 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c[1238,1251] [2021-05-02 12:34:36,081 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 12:34:36,097 INFO L208 MainTranslator]: Completed translation [2021-05-02 12:34:36,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:34:36 WrapperNode [2021-05-02 12:34:36,098 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 12:34:36,099 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 12:34:36,099 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 12:34:36,099 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 12:34:36,106 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:34:36" (1/1) ... [2021-05-02 12:34:36,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:34:36" (1/1) ... [2021-05-02 12:34:36,111 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:34:36" (1/1) ... [2021-05-02 12:34:36,111 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:34:36" (1/1) ... [2021-05-02 12:34:36,120 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:34:36" (1/1) ... [2021-05-02 12:34:36,122 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:34:36" (1/1) ... [2021-05-02 12:34:36,125 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:34:36" (1/1) ... [2021-05-02 12:34:36,128 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 12:34:36,129 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 12:34:36,129 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 12:34:36,129 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 12:34:36,129 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:34:36" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 12:34:36,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 12:34:36,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 12:34:36,192 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 12:34:36,193 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 12:34:36,193 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 12:34:36,193 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 12:34:36,193 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 12:34:36,194 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 12:34:36,194 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 12:34:36,194 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 12:34:36,194 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 12:34:36,194 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-02 12:34:36,195 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 12:34:36,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 12:34:36,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 12:34:36,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 12:34:36,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 12:34:36,196 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 12:34:36,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 12:34:36,405 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 12:34:36,406 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-05-02 12:34:36,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 12:34:36 BoogieIcfgContainer [2021-05-02 12:34:36,407 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 12:34:36,408 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 12:34:36,408 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 12:34:36,409 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 12:34:36,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 12:34:35" (1/3) ... [2021-05-02 12:34:36,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5722474d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 12:34:36, skipping insertion in model container [2021-05-02 12:34:36,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:34:36" (2/3) ... [2021-05-02 12:34:36,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5722474d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 12:34:36, skipping insertion in model container [2021-05-02 12:34:36,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 12:34:36" (3/3) ... [2021-05-02 12:34:36,411 INFO L111 eAbstractionObserver]: Analyzing ICFG gsv2008.c.i.v+lhb-reducer.c [2021-05-02 12:34:36,414 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-02 12:34:36,417 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 12:34:36,427 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 12:34:36,441 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 12:34:36,441 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-02 12:34:36,441 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-02 12:34:36,441 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 12:34:36,441 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 12:34:36,441 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 12:34:36,441 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 12:34:36,441 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 12:34:36,459 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 12:34:36,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-05-02 12:34:36,462 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:34:36,463 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:34:36,463 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:34:36,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:34:36,472 INFO L82 PathProgramCache]: Analyzing trace with hash -782080232, now seen corresponding path program 1 times [2021-05-02 12:34:36,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:34:36,478 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896929888] [2021-05-02 12:34:36,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:34:36,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:34:36,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:34:36,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:34:36,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:34:36,711 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:34:36,711 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896929888] [2021-05-02 12:34:36,712 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896929888] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 12:34:36,713 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 12:34:36,713 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-02 12:34:36,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012631640] [2021-05-02 12:34:36,716 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-02 12:34:36,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:34:36,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-02 12:34:36,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-02 12:34:36,730 INFO L87 Difference]: Start difference. First operand has 18 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:36,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:34:36,937 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2021-05-02 12:34:36,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 12:34:36,939 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-05-02 12:34:36,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:34:36,943 INFO L225 Difference]: With dead ends: 33 [2021-05-02 12:34:36,943 INFO L226 Difference]: Without dead ends: 16 [2021-05-02 12:34:36,945 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 156.2ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-05-02 12:34:36,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-05-02 12:34:36,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-05-02 12:34:36,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:36,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-05-02 12:34:36,970 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 13 [2021-05-02 12:34:36,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:34:36,971 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-05-02 12:34:36,971 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:36,971 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-05-02 12:34:36,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-05-02 12:34:36,972 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:34:36,972 INFO L523 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:34:36,972 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 12:34:36,972 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:34:36,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:34:36,973 INFO L82 PathProgramCache]: Analyzing trace with hash 38085627, now seen corresponding path program 1 times [2021-05-02 12:34:36,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:34:36,973 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759104433] [2021-05-02 12:34:36,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:34:36,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:34:37,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:34:37,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:34:37,069 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:34:37,069 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:34:37,069 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759104433] [2021-05-02 12:34:37,069 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759104433] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:34:37,069 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297339183] [2021-05-02 12:34:37,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:34:37,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:34:37,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 12 conjunts are in the unsatisfiable core [2021-05-02 12:34:37,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:34:37,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:37,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:37,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:37,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:37,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:37,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:37,266 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:34:37,266 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297339183] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:34:37,267 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:34:37,267 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2021-05-02 12:34:37,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631359855] [2021-05-02 12:34:37,268 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-02 12:34:37,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:34:37,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-02 12:34:37,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-05-02 12:34:37,269 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:37,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:34:37,348 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2021-05-02 12:34:37,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-02 12:34:37,348 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-05-02 12:34:37,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:34:37,349 INFO L225 Difference]: With dead ends: 21 [2021-05-02 12:34:37,349 INFO L226 Difference]: Without dead ends: 18 [2021-05-02 12:34:37,350 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 80.2ms TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-05-02 12:34:37,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-05-02 12:34:37,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-05-02 12:34:37,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:37,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2021-05-02 12:34:37,360 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15 [2021-05-02 12:34:37,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:34:37,361 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2021-05-02 12:34:37,361 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:37,361 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2021-05-02 12:34:37,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-05-02 12:34:37,363 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:34:37,367 INFO L523 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:34:37,582 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-05-02 12:34:37,583 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:34:37,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:34:37,584 INFO L82 PathProgramCache]: Analyzing trace with hash -2056506338, now seen corresponding path program 2 times [2021-05-02 12:34:37,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:34:37,584 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263475622] [2021-05-02 12:34:37,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:34:37,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:34:37,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:34:37,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:34:37,666 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-02 12:34:37,667 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:34:37,667 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263475622] [2021-05-02 12:34:37,667 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263475622] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 12:34:37,667 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 12:34:37,667 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-02 12:34:37,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119657659] [2021-05-02 12:34:37,667 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-02 12:34:37,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:34:37,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-02 12:34:37,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-02 12:34:37,668 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:37,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:34:37,689 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2021-05-02 12:34:37,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-02 12:34:37,689 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-05-02 12:34:37,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:34:37,689 INFO L225 Difference]: With dead ends: 18 [2021-05-02 12:34:37,690 INFO L226 Difference]: Without dead ends: 0 [2021-05-02 12:34:37,690 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.7ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-05-02 12:34:37,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-02 12:34:37,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-02 12:34:37,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-02 12:34:37,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-02 12:34:37,690 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2021-05-02 12:34:37,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:34:37,690 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-02 12:34:37,691 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:37,691 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-02 12:34:37,691 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-02 12:34:37,691 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-02 12:34:37,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-05-02 12:34:37,779 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2021-05-02 12:34:37,779 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 4) no Hoare annotation was computed. [2021-05-02 12:34:37,779 INFO L198 CegarLoopUtils]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2021-05-02 12:34:37,779 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-05-02 12:34:37,780 INFO L194 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)|) (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |old(#valid)| |#valid|) (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string4.base| |old(#t~string4.base)|) (= ~__return_main~0 |old(~__return_main~0)|) (= |#NULL.base| |old(#NULL.base)|) (= ~__return_65~0 |old(~__return_65~0)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2021-05-02 12:34:37,780 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-05-02 12:34:37,780 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-05-02 12:34:37,780 INFO L201 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-05-02 12:34:37,780 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-05-02 12:34:37,780 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-05-02 12:34:37,780 INFO L198 CegarLoopUtils]: For program point assume_abort_if_notENTRY(lines 6 8) no Hoare annotation was computed. [2021-05-02 12:34:37,780 INFO L198 CegarLoopUtils]: For program point L7(line 7) no Hoare annotation was computed. [2021-05-02 12:34:37,780 INFO L198 CegarLoopUtils]: For program point L7-2(lines 6 8) no Hoare annotation was computed. [2021-05-02 12:34:37,780 INFO L198 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 6 8) no Hoare annotation was computed. [2021-05-02 12:34:37,780 INFO L198 CegarLoopUtils]: For program point L32(lines 32 71) no Hoare annotation was computed. [2021-05-02 12:34:37,781 INFO L198 CegarLoopUtils]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 57) no Hoare annotation was computed. [2021-05-02 12:34:37,781 INFO L194 CegarLoopUtils]: At program point mainENTRY(lines 14 74) the Hoare annotation is: (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |old(~__return_65~0)| ~__return_65~0)) [2021-05-02 12:34:37,781 INFO L198 CegarLoopUtils]: For program point L26(lines 26 72) no Hoare annotation was computed. [2021-05-02 12:34:37,781 INFO L198 CegarLoopUtils]: For program point L57(line 57) no Hoare annotation was computed. [2021-05-02 12:34:37,781 INFO L198 CegarLoopUtils]: For program point mainEXIT(lines 14 74) no Hoare annotation was computed. [2021-05-02 12:34:37,781 INFO L198 CegarLoopUtils]: For program point L55(lines 55 64) no Hoare annotation was computed. [2021-05-02 12:34:37,781 INFO L198 CegarLoopUtils]: For program point L20(lines 20 73) no Hoare annotation was computed. [2021-05-02 12:34:37,781 INFO L194 CegarLoopUtils]: At program point L46(lines 33 67) the Hoare annotation is: (<= (+ main_~main__x~0 2) main_~main__y~0) [2021-05-02 12:34:37,782 INFO L198 CegarLoopUtils]: For program point mainFINAL(lines 14 74) no Hoare annotation was computed. [2021-05-02 12:34:37,782 INFO L198 CegarLoopUtils]: For program point L40(lines 40 66) no Hoare annotation was computed. [2021-05-02 12:34:37,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 12:34:37 BoogieIcfgContainer [2021-05-02 12:34:37,792 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 12:34:37,793 INFO L168 Benchmark]: Toolchain (without parser) took 1910.79 ms. Allocated memory was 194.0 MB in the beginning and 232.8 MB in the end (delta: 38.8 MB). Free memory was 158.6 MB in the beginning and 207.7 MB in the end (delta: -49.1 MB). Peak memory consumption was 65.4 MB. Max. memory is 8.0 GB. [2021-05-02 12:34:37,794 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 194.0 MB. Free memory is still 175.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 12:34:37,796 INFO L168 Benchmark]: CACSL2BoogieTranslator took 212.92 ms. Allocated memory is still 194.0 MB. Free memory was 158.4 MB in the beginning and 176.4 MB in the end (delta: -18.0 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-05-02 12:34:37,800 INFO L168 Benchmark]: Boogie Preprocessor took 29.29 ms. Allocated memory is still 194.0 MB. Free memory was 176.4 MB in the beginning and 175.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-02 12:34:37,802 INFO L168 Benchmark]: RCFGBuilder took 278.00 ms. Allocated memory is still 194.0 MB. Free memory was 174.8 MB in the beginning and 160.7 MB in the end (delta: 14.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-05-02 12:34:37,802 INFO L168 Benchmark]: TraceAbstraction took 1385.03 ms. Allocated memory was 194.0 MB in the beginning and 232.8 MB in the end (delta: 38.8 MB). Free memory was 160.2 MB in the beginning and 207.7 MB in the end (delta: -47.5 MB). Peak memory consumption was 68.3 MB. Max. memory is 8.0 GB. [2021-05-02 12:34:37,804 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 194.0 MB. Free memory is still 175.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 212.92 ms. Allocated memory is still 194.0 MB. Free memory was 158.4 MB in the beginning and 176.4 MB in the end (delta: -18.0 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 29.29 ms. Allocated memory is still 194.0 MB. Free memory was 176.4 MB in the beginning and 175.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 278.00 ms. Allocated memory is still 194.0 MB. Free memory was 174.8 MB in the beginning and 160.7 MB in the end (delta: 14.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1385.03 ms. Allocated memory was 194.0 MB in the beginning and 232.8 MB in the end (delta: 38.8 MB). Free memory was 160.2 MB in the beginning and 207.7 MB in the end (delta: -47.5 MB). Peak memory consumption was 68.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 57]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1251.8ms, OverallIterations: 3, TraceHistogramMax: 3, EmptinessCheckTime: 16.1ms, AutomataDifference: 331.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 87.6ms, InitialAbstractionConstructionTime: 6.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 37 SDtfs, 24 SDslu, 88 SDs, 0 SdLazy, 112 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 128.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 265.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 21.5ms AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 7 NumberOfFragments, 54 HoareAnnotationTreeSize, 5 FomulaSimplifications, 25 FormulaSimplificationTreeSizeReduction, 24.7ms HoareSimplificationTime, 5 FomulaSimplificationsInter, 33 FormulaSimplificationTreeSizeReductionInter, 57.8ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 25.1ms SsaConstructionTime, 90.2ms SatisfiabilityAnalysisTime, 429.4ms InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 56 ConstructedInterpolants, 0 QuantifiedInterpolants, 276 SizeOfPredicates, 3 NumberOfNonLiveVariables, 135 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 6/10 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: main__x + 2 <= main__y RESULT: Ultimate proved your program to be correct! Received shutdown request...