/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 18:44:30,766 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 18:44:30,769 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 18:44:30,804 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 18:44:30,805 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 18:44:30,807 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 18:44:30,809 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 18:44:30,811 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 18:44:30,814 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 18:44:30,815 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 18:44:30,818 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 18:44:30,819 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 18:44:30,820 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 18:44:30,822 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 18:44:30,823 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 18:44:30,825 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 18:44:30,826 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 18:44:30,827 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 18:44:30,843 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 18:44:30,846 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 18:44:30,848 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 18:44:30,849 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 18:44:30,851 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 18:44:30,852 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 18:44:30,856 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 18:44:30,867 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 18:44:30,868 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 18:44:30,871 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 18:44:30,874 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 [2020-10-23 18:44:30,929 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 18:44:30,929 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 18:44:30,932 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-23 18:44:30,933 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-23 18:44:30,935 INFO L138 SettingsManager]: * Use SBE=true [2020-10-23 18:44:30,935 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 18:44:30,935 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 18:44:30,935 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 18:44:30,936 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 18:44:30,936 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 18:44:30,937 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 18:44:30,937 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 18:44:30,937 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 18:44:30,938 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 18:44:30,938 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 18:44:30,938 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 18:44:30,938 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 18:44:30,938 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 18:44:30,939 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-23 18:44:30,939 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 18:44:30,939 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 18:44:30,939 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 18:44:30,940 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 18:44:30,940 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-23 18:44:30,940 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-23 18:44:30,940 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-23 18:44:30,940 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-23 18:44:30,941 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 18:44:30,941 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-23 18:44:30,941 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 18:44:31,378 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 18:44:31,405 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 18:44:31,408 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 18:44:31,410 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 18:44:31,411 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 18:44:31,412 INFO L432 ainManager$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 [2020-10-23 18:44:31,487 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eefc72198/99daed29895840aea1270848a0c288c5/FLAG6b62b656d [2020-10-23 18:44:32,109 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 18:44:32,110 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c [2020-10-23 18:44:32,118 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eefc72198/99daed29895840aea1270848a0c288c5/FLAG6b62b656d [2020-10-23 18:44:32,137 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eefc72198/99daed29895840aea1270848a0c288c5 [2020-10-23 18:44:32,141 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 18:44:32,148 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 18:44:32,150 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 18:44:32,151 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 18:44:32,155 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 18:44:32,156 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:44:32" (1/1) ... [2020-10-23 18:44:32,161 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7832d40b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:32, skipping insertion in model container [2020-10-23 18:44:32,162 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:44:32" (1/1) ... [2020-10-23 18:44:32,172 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 18:44:32,197 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 18:44:32,474 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:44:32,486 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 18:44:32,515 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:44:32,537 INFO L208 MainTranslator]: Completed translation [2020-10-23 18:44:32,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:32 WrapperNode [2020-10-23 18:44:32,539 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 18:44:32,541 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 18:44:32,541 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 18:44:32,541 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 18:44:32,561 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:32" (1/1) ... [2020-10-23 18:44:32,564 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:32" (1/1) ... [2020-10-23 18:44:32,575 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:32" (1/1) ... [2020-10-23 18:44:32,575 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:32" (1/1) ... [2020-10-23 18:44:32,593 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:32" (1/1) ... [2020-10-23 18:44:32,596 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:32" (1/1) ... [2020-10-23 18:44:32,604 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:32" (1/1) ... [2020-10-23 18:44:32,609 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 18:44:32,612 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 18:44:32,612 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 18:44:32,612 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 18:44:32,613 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:32" (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 [2020-10-23 18:44:32,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 18:44:32,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 18:44:32,698 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 18:44:32,699 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-23 18:44:32,699 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 18:44:32,699 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 18:44:32,699 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 18:44:32,700 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 18:44:32,700 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 18:44:32,700 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-23 18:44:32,701 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 18:44:32,701 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 18:44:32,701 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 18:44:32,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 18:44:32,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 18:44:32,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 18:44:32,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 18:44:32,704 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 18:44:32,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 18:44:33,199 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 18:44:33,199 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-23 18:44:33,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:44:33 BoogieIcfgContainer [2020-10-23 18:44:33,202 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 18:44:33,206 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 18:44:33,206 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 18:44:33,210 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 18:44:33,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:44:32" (1/3) ... [2020-10-23 18:44:33,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@641924bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:44:33, skipping insertion in model container [2020-10-23 18:44:33,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:32" (2/3) ... [2020-10-23 18:44:33,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@641924bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:44:33, skipping insertion in model container [2020-10-23 18:44:33,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:44:33" (3/3) ... [2020-10-23 18:44:33,239 INFO L111 eAbstractionObserver]: Analyzing ICFG gsv2008.c.i.v+lhb-reducer.c [2020-10-23 18:44:33,255 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-23 18:44:33,262 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 18:44:33,293 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 18:44:33,337 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 18:44:33,337 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 18:44:33,337 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-23 18:44:33,338 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 18:44:33,338 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 18:44:33,338 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 18:44:33,339 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 18:44:33,339 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 18:44:33,360 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-10-23 18:44:33,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-23 18:44:33,369 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:44:33,370 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:44:33,371 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:44:33,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:44:33,382 INFO L82 PathProgramCache]: Analyzing trace with hash -988663557, now seen corresponding path program 1 times [2020-10-23 18:44:33,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:44:33,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716507117] [2020-10-23 18:44:33,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:44:33,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:33,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:44:33,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:33,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:44:33,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716507117] [2020-10-23 18:44:33,866 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:44:33,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-23 18:44:33,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795399944] [2020-10-23 18:44:33,875 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 18:44:33,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:44:33,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 18:44:33,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-23 18:44:33,893 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 6 states. [2020-10-23 18:44:34,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:44:34,261 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2020-10-23 18:44:34,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-23 18:44:34,263 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-23 18:44:34,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:44:34,274 INFO L225 Difference]: With dead ends: 38 [2020-10-23 18:44:34,274 INFO L226 Difference]: Without dead ends: 17 [2020-10-23 18:44:34,280 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-23 18:44:34,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-10-23 18:44:34,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-10-23 18:44:34,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-23 18:44:34,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-10-23 18:44:34,337 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 14 [2020-10-23 18:44:34,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:44:34,337 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-10-23 18:44:34,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 18:44:34,338 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-10-23 18:44:34,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-23 18:44:34,339 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:44:34,339 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:44:34,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 18:44:34,339 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:44:34,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:44:34,341 INFO L82 PathProgramCache]: Analyzing trace with hash -982937320, now seen corresponding path program 1 times [2020-10-23 18:44:34,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:44:34,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250977471] [2020-10-23 18:44:34,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:44:34,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:34,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:44:34,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:34,611 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:44:34,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250977471] [2020-10-23 18:44:34,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33682725] [2020-10-23 18:44:34,612 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 [2020-10-23 18:44:34,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:34,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-23 18:44:34,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:44:34,860 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 18:44:34,865 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 18:44:34,898 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:44:34,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:44:34,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2020-10-23 18:44:34,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619457987] [2020-10-23 18:44:34,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-23 18:44:34,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:44:34,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-23 18:44:34,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-23 18:44:34,903 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 8 states. [2020-10-23 18:44:35,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:44:35,124 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2020-10-23 18:44:35,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-23 18:44:35,125 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2020-10-23 18:44:35,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:44:35,126 INFO L225 Difference]: With dead ends: 23 [2020-10-23 18:44:35,126 INFO L226 Difference]: Without dead ends: 19 [2020-10-23 18:44:35,128 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-23 18:44:35,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-10-23 18:44:35,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-10-23 18:44:35,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-23 18:44:35,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-10-23 18:44:35,134 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 16 [2020-10-23 18:44:35,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:44:35,134 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-10-23 18:44:35,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-23 18:44:35,134 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-10-23 18:44:35,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-23 18:44:35,135 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:44:35,135 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:44:35,349 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-10-23 18:44:35,350 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:44:35,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:44:35,352 INFO L82 PathProgramCache]: Analyzing trace with hash 225009141, now seen corresponding path program 2 times [2020-10-23 18:44:35,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:44:35,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072258809] [2020-10-23 18:44:35,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:44:35,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:35,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:44:35,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:35,536 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-23 18:44:35,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072258809] [2020-10-23 18:44:35,537 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:44:35,537 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 18:44:35,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317751119] [2020-10-23 18:44:35,538 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 18:44:35,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:44:35,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 18:44:35,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-23 18:44:35,539 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 5 states. [2020-10-23 18:44:35,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:44:35,612 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2020-10-23 18:44:35,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-23 18:44:35,613 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-23 18:44:35,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:44:35,613 INFO L225 Difference]: With dead ends: 19 [2020-10-23 18:44:35,613 INFO L226 Difference]: Without dead ends: 0 [2020-10-23 18:44:35,614 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-23 18:44:35,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-23 18:44:35,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-23 18:44:35,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-23 18:44:35,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-23 18:44:35,615 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-10-23 18:44:35,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:44:35,616 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-23 18:44:35,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 18:44:35,616 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-23 18:44:35,616 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-23 18:44:35,616 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 18:44:35,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-23 18:44:35,777 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2020-10-23 18:44:35,777 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 4) the Hoare annotation is: true [2020-10-23 18:44:35,777 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2020-10-23 18:44:35,778 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-10-23 18:44:35,778 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-23 18:44:35,778 INFO L270 CegarLoopResult]: 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)|)) [2020-10-23 18:44:35,778 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-23 18:44:35,779 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-23 18:44:35,779 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-23 18:44:35,779 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-23 18:44:35,779 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-23 18:44:35,779 INFO L274 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 6 8) no Hoare annotation was computed. [2020-10-23 18:44:35,779 INFO L274 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-10-23 18:44:35,779 INFO L274 CegarLoopResult]: For program point L7-2(lines 6 8) no Hoare annotation was computed. [2020-10-23 18:44:35,780 INFO L274 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 6 8) no Hoare annotation was computed. [2020-10-23 18:44:35,780 INFO L274 CegarLoopResult]: For program point L32(lines 32 71) no Hoare annotation was computed. [2020-10-23 18:44:35,780 INFO L270 CegarLoopResult]: 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)) [2020-10-23 18:44:35,780 INFO L274 CegarLoopResult]: For program point L26(lines 26 72) no Hoare annotation was computed. [2020-10-23 18:44:35,780 INFO L270 CegarLoopResult]: At program point L57(line 57) the Hoare annotation is: false [2020-10-23 18:44:35,780 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 14 74) no Hoare annotation was computed. [2020-10-23 18:44:35,781 INFO L274 CegarLoopResult]: For program point L57-1(line 57) no Hoare annotation was computed. [2020-10-23 18:44:35,781 INFO L274 CegarLoopResult]: For program point L55(lines 55 64) no Hoare annotation was computed. [2020-10-23 18:44:35,781 INFO L274 CegarLoopResult]: For program point L20(lines 20 73) no Hoare annotation was computed. [2020-10-23 18:44:35,781 INFO L270 CegarLoopResult]: At program point L46(lines 33 67) the Hoare annotation is: (<= (+ main_~main__x~0 2) main_~main__y~0) [2020-10-23 18:44:35,781 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 14 74) no Hoare annotation was computed. [2020-10-23 18:44:35,781 INFO L274 CegarLoopResult]: For program point L40(lines 40 66) no Hoare annotation was computed. [2020-10-23 18:44:35,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:44:35 BoogieIcfgContainer [2020-10-23 18:44:35,798 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 18:44:35,801 INFO L168 Benchmark]: Toolchain (without parser) took 3656.66 ms. Allocated memory is still 151.0 MB. Free memory was 126.3 MB in the beginning and 92.0 MB in the end (delta: 34.3 MB). Peak memory consumption was 34.5 MB. Max. memory is 8.0 GB. [2020-10-23 18:44:35,801 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 151.0 MB. Free memory is still 124.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 18:44:35,802 INFO L168 Benchmark]: CACSL2BoogieTranslator took 388.85 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 116.1 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-23 18:44:35,803 INFO L168 Benchmark]: Boogie Preprocessor took 68.71 ms. Allocated memory is still 151.0 MB. Free memory was 116.0 MB in the beginning and 114.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-23 18:44:35,804 INFO L168 Benchmark]: RCFGBuilder took 590.08 ms. Allocated memory is still 151.0 MB. Free memory was 114.5 MB in the beginning and 100.9 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-10-23 18:44:35,805 INFO L168 Benchmark]: TraceAbstraction took 2591.92 ms. Allocated memory is still 151.0 MB. Free memory was 100.5 MB in the beginning and 92.0 MB in the end (delta: 8.5 MB). Peak memory consumption was 9.3 MB. Max. memory is 8.0 GB. [2020-10-23 18:44:35,809 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 151.0 MB. Free memory is still 124.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 388.85 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 116.1 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 68.71 ms. Allocated memory is still 151.0 MB. Free memory was 116.0 MB in the beginning and 114.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 590.08 ms. Allocated memory is still 151.0 MB. Free memory was 114.5 MB in the beginning and 100.9 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2591.92 ms. Allocated memory is still 151.0 MB. Free memory was 100.5 MB in the beginning and 92.0 MB in the end (delta: 8.5 MB). Peak memory consumption was 9.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: main__x + 2 <= main__y - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.2s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 39 SDtfs, 26 SDslu, 88 SDs, 0 SdLazy, 118 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 11 NumberOfFragments, 56 HoareAnnotationTreeSize, 9 FomulaSimplifications, 25 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 33 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 64 NumberOfCodeBlocks, 64 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 60 ConstructedInterpolants, 0 QuantifiedInterpolants, 4184 SizeOfPredicates, 4 NumberOfNonLiveVariables, 138 ConjunctsInSsa, 9 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...