/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/terminator_02-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 16:26:17,513 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 16:26:17,517 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 16:26:17,574 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 16:26:17,575 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 16:26:17,579 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 16:26:17,583 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 16:26:17,590 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 16:26:17,608 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 16:26:17,614 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 16:26:17,615 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 16:26:17,616 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 16:26:17,617 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 16:26:17,619 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 16:26:17,621 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 16:26:17,623 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 16:26:17,626 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 16:26:17,627 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 16:26:17,648 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 16:26:17,653 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 16:26:17,655 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 16:26:17,659 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 16:26:17,660 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 16:26:17,662 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 16:26:17,666 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 16:26:17,675 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 16:26:17,676 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 16:26:17,676 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 16:26:17,677 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 [2021-02-21 16:26:17,702 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 16:26:17,702 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 16:26:17,704 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-21 16:26:17,704 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-21 16:26:17,704 INFO L138 SettingsManager]: * Use SBE=true [2021-02-21 16:26:17,705 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 16:26:17,705 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 16:26:17,705 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 16:26:17,705 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 16:26:17,705 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 16:26:17,706 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 16:26:17,706 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 16:26:17,706 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 16:26:17,706 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 16:26:17,707 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 16:26:17,707 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 16:26:17,707 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 16:26:17,707 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 16:26:17,708 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-21 16:26:17,708 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 16:26:17,708 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 16:26:17,708 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 16:26:17,708 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-21 16:26:17,709 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-21 16:26:17,709 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-21 16:26:17,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-21 16:26:17,709 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 16:26:17,709 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-21 16:26:17,709 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 16:26:18,130 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 16:26:18,153 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 16:26:18,156 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 16:26:18,157 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 16:26:18,158 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 16:26:18,159 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/terminator_02-2.c [2021-02-21 16:26:18,241 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72c933ae2/ebee59a6101c4d5d91cf1a94051fed60/FLAG592181aba [2021-02-21 16:26:18,815 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 16:26:18,816 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/terminator_02-2.c [2021-02-21 16:26:18,823 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72c933ae2/ebee59a6101c4d5d91cf1a94051fed60/FLAG592181aba [2021-02-21 16:26:19,179 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72c933ae2/ebee59a6101c4d5d91cf1a94051fed60 [2021-02-21 16:26:19,183 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 16:26:19,199 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 16:26:19,203 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 16:26:19,203 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 16:26:19,207 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 16:26:19,208 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:26:19" (1/1) ... [2021-02-21 16:26:19,210 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3026c2bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:26:19, skipping insertion in model container [2021-02-21 16:26:19,211 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:26:19" (1/1) ... [2021-02-21 16:26:19,219 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 16:26:19,240 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 16:26:19,443 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/terminator_02-2.c[414,427] [2021-02-21 16:26:19,462 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 16:26:19,473 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 16:26:19,490 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/terminator_02-2.c[414,427] [2021-02-21 16:26:19,504 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 16:26:19,523 INFO L208 MainTranslator]: Completed translation [2021-02-21 16:26:19,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:26:19 WrapperNode [2021-02-21 16:26:19,524 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 16:26:19,525 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 16:26:19,525 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 16:26:19,525 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 16:26:19,538 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:26:19" (1/1) ... [2021-02-21 16:26:19,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:26:19" (1/1) ... [2021-02-21 16:26:19,545 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:26:19" (1/1) ... [2021-02-21 16:26:19,546 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:26:19" (1/1) ... [2021-02-21 16:26:19,551 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:26:19" (1/1) ... [2021-02-21 16:26:19,556 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:26:19" (1/1) ... [2021-02-21 16:26:19,558 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:26:19" (1/1) ... [2021-02-21 16:26:19,560 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 16:26:19,561 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 16:26:19,561 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 16:26:19,561 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 16:26:19,562 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:26:19" (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 [2021-02-21 16:26:19,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 16:26:19,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 16:26:19,717 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 16:26:19,717 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-21 16:26:19,717 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-21 16:26:19,717 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 16:26:19,717 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 16:26:19,718 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 16:26:19,718 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 16:26:19,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 16:26:19,718 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-21 16:26:19,718 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-21 16:26:19,718 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 16:26:19,719 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2021-02-21 16:26:19,719 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 16:26:19,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 16:26:19,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 16:26:19,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 16:26:19,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 16:26:19,719 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 16:26:19,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 16:26:19,951 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 16:26:19,951 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-21 16:26:19,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:26:19 BoogieIcfgContainer [2021-02-21 16:26:19,953 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 16:26:19,955 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 16:26:19,955 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 16:26:19,958 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 16:26:19,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 04:26:19" (1/3) ... [2021-02-21 16:26:19,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b4430e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:26:19, skipping insertion in model container [2021-02-21 16:26:19,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:26:19" (2/3) ... [2021-02-21 16:26:19,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b4430e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:26:19, skipping insertion in model container [2021-02-21 16:26:19,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:26:19" (3/3) ... [2021-02-21 16:26:19,962 INFO L111 eAbstractionObserver]: Analyzing ICFG terminator_02-2.c [2021-02-21 16:26:19,975 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-21 16:26:19,984 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 16:26:20,037 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 16:26:20,082 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 16:26:20,082 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 16:26:20,083 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-21 16:26:20,083 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 16:26:20,083 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 16:26:20,083 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 16:26:20,083 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 16:26:20,083 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 16:26:20,099 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2021-02-21 16:26:20,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-02-21 16:26:20,104 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:26:20,105 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:26:20,106 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:26:20,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:26:20,118 INFO L82 PathProgramCache]: Analyzing trace with hash 1267907657, now seen corresponding path program 1 times [2021-02-21 16:26:20,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:26:20,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515112211] [2021-02-21 16:26:20,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:26:20,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:26:20,372 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:20,373 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:20,382 WARN L141 QuantifierPusher]: treesize reduction 15, result has 6.3 percent of original size [2021-02-21 16:26:20,383 WARN L147 QuantifierPusher]: treesize reduction 15, result has 6.3 percent of original size 1 [2021-02-21 16:26:20,386 WARN L141 QuantifierPusher]: treesize reduction 15, result has 6.3 percent of original size [2021-02-21 16:26:20,387 WARN L147 QuantifierPusher]: treesize reduction 15, result has 6.3 percent of original size 1 [2021-02-21 16:26:20,390 WARN L141 QuantifierPusher]: treesize reduction 13, result has 35.0 percent of original size [2021-02-21 16:26:20,392 WARN L147 QuantifierPusher]: treesize reduction 13, result has 35.0 percent of original size 7 [2021-02-21 16:26:20,409 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:20,410 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 16:26:20,416 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:20,417 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 16:26:20,424 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:20,425 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:20,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:26:20,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:26:20,484 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:20,484 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:20,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:26:20,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515112211] [2021-02-21 16:26:20,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:26:20,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 16:26:20,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461291841] [2021-02-21 16:26:20,497 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 16:26:20,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:26:20,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 16:26:20,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-21 16:26:20,516 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 6 states. [2021-02-21 16:26:20,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:26:20,812 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2021-02-21 16:26:20,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-21 16:26:20,814 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2021-02-21 16:26:20,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:26:20,823 INFO L225 Difference]: With dead ends: 36 [2021-02-21 16:26:20,823 INFO L226 Difference]: Without dead ends: 0 [2021-02-21 16:26:20,828 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-02-21 16:26:20,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-21 16:26:20,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-21 16:26:20,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-21 16:26:20,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-21 16:26:20,857 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2021-02-21 16:26:20,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:26:20,857 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-21 16:26:20,858 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 16:26:20,858 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-21 16:26:20,858 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-21 16:26:20,859 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 16:26:20,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-21 16:26:21,028 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-02-21 16:26:21,028 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-02-21 16:26:21,028 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-02-21 16:26:21,028 INFO L189 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-02-21 16:26:21,029 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2021-02-21 16:26:21,029 INFO L189 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-02-21 16:26:21,029 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-02-21 16:26:21,029 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-21 16:26:21,030 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-21 16:26:21,030 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-02-21 16:26:21,030 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notENTRY(lines 6 8) no Hoare annotation was computed. [2021-02-21 16:26:21,030 INFO L189 CegarLoopUtils]: For program point L7(line 7) no Hoare annotation was computed. [2021-02-21 16:26:21,030 INFO L189 CegarLoopUtils]: For program point L7-2(lines 6 8) no Hoare annotation was computed. [2021-02-21 16:26:21,030 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 6 8) no Hoare annotation was computed. [2021-02-21 16:26:21,031 INFO L189 CegarLoopUtils]: For program point L29(lines 29 34) no Hoare annotation was computed. [2021-02-21 16:26:21,031 INFO L192 CegarLoopUtils]: At program point L29-2(lines 26 35) the Hoare annotation is: true [2021-02-21 16:26:21,031 INFO L189 CegarLoopUtils]: For program point L25(line 25) no Hoare annotation was computed. [2021-02-21 16:26:21,031 INFO L189 CegarLoopUtils]: For program point mainEXIT(lines 18 40) no Hoare annotation was computed. [2021-02-21 16:26:21,031 INFO L189 CegarLoopUtils]: For program point L23(line 23) no Hoare annotation was computed. [2021-02-21 16:26:21,031 INFO L189 CegarLoopUtils]: For program point mainFINAL(lines 18 40) no Hoare annotation was computed. [2021-02-21 16:26:21,032 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 18 40) the Hoare annotation is: true [2021-02-21 16:26:21,032 INFO L189 CegarLoopUtils]: For program point L24(line 24) no Hoare annotation was computed. [2021-02-21 16:26:21,032 INFO L185 CegarLoopUtils]: At program point L26-2(lines 26 35) the Hoare annotation is: (or (<= main_~z~0 100) (< 99 main_~x~0)) [2021-02-21 16:26:21,032 INFO L189 CegarLoopUtils]: For program point L22(line 22) no Hoare annotation was computed. [2021-02-21 16:26:21,032 INFO L189 CegarLoopUtils]: For program point L37(line 37) no Hoare annotation was computed. [2021-02-21 16:26:21,033 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 9 14) the Hoare annotation is: true [2021-02-21 16:26:21,033 INFO L189 CegarLoopUtils]: For program point L11(line 11) no Hoare annotation was computed. [2021-02-21 16:26:21,033 INFO L189 CegarLoopUtils]: For program point L10(lines 10 12) no Hoare annotation was computed. [2021-02-21 16:26:21,033 INFO L189 CegarLoopUtils]: For program point __VERIFIER_assertEXIT(lines 9 14) no Hoare annotation was computed. [2021-02-21 16:26:21,033 INFO L189 CegarLoopUtils]: For program point L10-2(lines 9 14) no Hoare annotation was computed. [2021-02-21 16:26:21,034 INFO L189 CegarLoopUtils]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 11) no Hoare annotation was computed. [2021-02-21 16:26:21,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 04:26:21 BoogieIcfgContainer [2021-02-21 16:26:21,045 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 16:26:21,047 INFO L168 Benchmark]: Toolchain (without parser) took 1860.93 ms. Allocated memory was 172.0 MB in the beginning and 209.7 MB in the end (delta: 37.7 MB). Free memory was 152.0 MB in the beginning and 160.5 MB in the end (delta: -8.6 MB). Peak memory consumption was 29.0 MB. Max. memory is 8.0 GB. [2021-02-21 16:26:21,048 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 172.0 MB. Free memory was 143.4 MB in the beginning and 143.4 MB in the end (delta: 1.6 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 16:26:21,049 INFO L168 Benchmark]: CACSL2BoogieTranslator took 321.44 ms. Allocated memory is still 172.0 MB. Free memory was 150.9 MB in the beginning and 141.4 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-21 16:26:21,050 INFO L168 Benchmark]: Boogie Preprocessor took 35.49 ms. Allocated memory is still 172.0 MB. Free memory was 141.4 MB in the beginning and 139.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-21 16:26:21,051 INFO L168 Benchmark]: RCFGBuilder took 391.95 ms. Allocated memory is still 172.0 MB. Free memory was 139.9 MB in the beginning and 141.4 MB in the end (delta: -1.6 MB). Peak memory consumption was 3.4 MB. Max. memory is 8.0 GB. [2021-02-21 16:26:21,053 INFO L168 Benchmark]: TraceAbstraction took 1090.48 ms. Allocated memory was 172.0 MB in the beginning and 209.7 MB in the end (delta: 37.7 MB). Free memory was 141.1 MB in the beginning and 160.5 MB in the end (delta: -19.5 MB). Peak memory consumption was 19.3 MB. Max. memory is 8.0 GB. [2021-02-21 16:26:21,057 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 172.0 MB. Free memory was 143.4 MB in the beginning and 143.4 MB in the end (delta: 1.6 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 321.44 ms. Allocated memory is still 172.0 MB. Free memory was 150.9 MB in the beginning and 141.4 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 35.49 ms. Allocated memory is still 172.0 MB. Free memory was 141.4 MB in the beginning and 139.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 391.95 ms. Allocated memory is still 172.0 MB. Free memory was 139.9 MB in the beginning and 141.4 MB in the end (delta: -1.6 MB). Peak memory consumption was 3.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1090.48 ms. Allocated memory was 172.0 MB in the beginning and 209.7 MB in the end (delta: 37.7 MB). Free memory was 141.1 MB in the beginning and 160.5 MB in the end (delta: -19.5 MB). Peak memory consumption was 19.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 11]: 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: 26]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.7s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 25 SDtfs, 25 SDslu, 26 SDs, 0 SdLazy, 58 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 8 PreInvPairs, 9 NumberOfFragments, 43 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 129 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 784 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...