/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/sum01-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-06 22:45:11,102 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 22:45:11,106 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 22:45:11,158 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-06 22:45:11,159 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-06 22:45:11,163 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-06 22:45:11,166 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-06 22:45:11,174 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-06 22:45:11,177 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-06 22:45:11,182 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-06 22:45:11,184 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-06 22:45:11,185 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-06 22:45:11,185 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-06 22:45:11,188 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-06 22:45:11,190 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-06 22:45:11,192 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-06 22:45:11,193 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-06 22:45:11,196 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-06 22:45:11,202 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-06 22:45:11,223 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-06 22:45:11,224 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-06 22:45:11,225 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-06 22:45:11,227 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-06 22:45:11,229 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-06 22:45:11,236 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-06 22:45:11,247 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 22:45:11,247 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 22:45:11,248 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 22:45:11,249 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 [2020-11-06 22:45:11,301 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 22:45:11,301 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 22:45:11,305 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-06 22:45:11,306 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-06 22:45:11,306 INFO L138 SettingsManager]: * Use SBE=true [2020-11-06 22:45:11,306 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 22:45:11,306 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 22:45:11,307 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 22:45:11,307 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 22:45:11,307 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 22:45:11,308 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 22:45:11,308 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 22:45:11,309 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 22:45:11,309 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 22:45:11,309 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 22:45:11,309 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 22:45:11,309 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 22:45:11,310 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 22:45:11,310 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-06 22:45:11,310 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 22:45:11,310 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 22:45:11,310 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 22:45:11,311 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 22:45:11,311 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-06 22:45:11,311 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-06 22:45:11,311 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-06 22:45:11,311 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-06 22:45:11,312 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 22:45:11,312 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-06 22:45:11,312 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 22:45:11,708 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 22:45:11,746 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 22:45:11,749 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 22:45:11,751 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 22:45:11,752 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 22:45:11,753 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum01-2.i [2020-11-06 22:45:11,822 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85f3525c7/f794b660b9db4f6a9f8ca8cfba57cf71/FLAGc8b04ed45 [2020-11-06 22:45:12,419 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 22:45:12,420 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum01-2.i [2020-11-06 22:45:12,427 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85f3525c7/f794b660b9db4f6a9f8ca8cfba57cf71/FLAGc8b04ed45 [2020-11-06 22:45:12,840 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85f3525c7/f794b660b9db4f6a9f8ca8cfba57cf71 [2020-11-06 22:45:12,843 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 22:45:12,851 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 22:45:12,854 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 22:45:12,854 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 22:45:12,858 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 22:45:12,859 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:45:12" (1/1) ... [2020-11-06 22:45:12,866 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3227e7b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:12, skipping insertion in model container [2020-11-06 22:45:12,866 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:45:12" (1/1) ... [2020-11-06 22:45:12,875 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 22:45:12,893 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 22:45:13,055 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:45:13,064 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 22:45:13,079 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:45:13,095 INFO L208 MainTranslator]: Completed translation [2020-11-06 22:45:13,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:13 WrapperNode [2020-11-06 22:45:13,096 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 22:45:13,097 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 22:45:13,097 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 22:45:13,097 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 22:45:13,111 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:13" (1/1) ... [2020-11-06 22:45:13,111 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:13" (1/1) ... [2020-11-06 22:45:13,119 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:13" (1/1) ... [2020-11-06 22:45:13,119 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:13" (1/1) ... [2020-11-06 22:45:13,125 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:13" (1/1) ... [2020-11-06 22:45:13,130 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:13" (1/1) ... [2020-11-06 22:45:13,131 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:13" (1/1) ... [2020-11-06 22:45:13,133 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 22:45:13,134 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 22:45:13,134 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 22:45:13,134 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 22:45:13,135 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:13" (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 [2020-11-06 22:45:13,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 22:45:13,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 22:45:13,215 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 22:45:13,216 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-06 22:45:13,216 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 22:45:13,216 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 22:45:13,216 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 22:45:13,216 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-11-06 22:45:13,217 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-11-06 22:45:13,217 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 22:45:13,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 22:45:13,218 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-06 22:45:13,218 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-06 22:45:13,219 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 22:45:13,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 22:45:13,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 22:45:13,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 22:45:13,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 22:45:13,221 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 22:45:13,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 22:45:13,559 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 22:45:13,560 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-11-06 22:45:13,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:45:13 BoogieIcfgContainer [2020-11-06 22:45:13,563 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 22:45:13,564 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 22:45:13,565 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 22:45:13,569 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 22:45:13,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:45:12" (1/3) ... [2020-11-06 22:45:13,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@101a4db1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:45:13, skipping insertion in model container [2020-11-06 22:45:13,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:13" (2/3) ... [2020-11-06 22:45:13,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@101a4db1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:45:13, skipping insertion in model container [2020-11-06 22:45:13,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:45:13" (3/3) ... [2020-11-06 22:45:13,573 INFO L111 eAbstractionObserver]: Analyzing ICFG sum01-2.i [2020-11-06 22:45:13,592 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-06 22:45:13,596 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-06 22:45:13,611 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-06 22:45:13,665 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 22:45:13,668 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 22:45:13,668 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-06 22:45:13,668 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 22:45:13,693 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 22:45:13,693 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 22:45:13,693 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 22:45:13,694 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 22:45:13,724 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-11-06 22:45:13,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-06 22:45:13,735 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:45:13,736 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:45:13,737 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:45:13,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:45:13,751 INFO L82 PathProgramCache]: Analyzing trace with hash 584388675, now seen corresponding path program 1 times [2020-11-06 22:45:13,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:45:13,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906557509] [2020-11-06 22:45:13,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:45:13,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:14,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:45:14,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:14,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:45:14,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906557509] [2020-11-06 22:45:14,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:45:14,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-06 22:45:14,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612955528] [2020-11-06 22:45:14,145 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-06 22:45:14,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:45:14,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-06 22:45:14,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-06 22:45:14,162 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 6 states. [2020-11-06 22:45:14,493 WARN L194 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2020-11-06 22:45:14,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:45:14,576 INFO L93 Difference]: Finished difference Result 46 states and 57 transitions. [2020-11-06 22:45:14,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-06 22:45:14,578 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-11-06 22:45:14,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:45:14,586 INFO L225 Difference]: With dead ends: 46 [2020-11-06 22:45:14,586 INFO L226 Difference]: Without dead ends: 17 [2020-11-06 22:45:14,597 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-11-06 22:45:14,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-11-06 22:45:14,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-11-06 22:45:14,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-11-06 22:45:14,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-11-06 22:45:14,649 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 14 [2020-11-06 22:45:14,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:45:14,649 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-11-06 22:45:14,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-06 22:45:14,650 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-11-06 22:45:14,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-06 22:45:14,651 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:45:14,651 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:45:14,651 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 22:45:14,651 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:45:14,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:45:14,653 INFO L82 PathProgramCache]: Analyzing trace with hash -263554975, now seen corresponding path program 1 times [2020-11-06 22:45:14,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:45:14,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713193341] [2020-11-06 22:45:14,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:45:14,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:14,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:45:14,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:14,920 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:45:14,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713193341] [2020-11-06 22:45:14,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106349666] [2020-11-06 22:45:14,921 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 [2020-11-06 22:45:14,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:15,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-06 22:45:15,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:45:15,174 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:45:15,219 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:45:15,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:45:15,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 15 [2020-11-06 22:45:15,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77178269] [2020-11-06 22:45:15,222 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-06 22:45:15,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:45:15,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-06 22:45:15,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-11-06 22:45:15,225 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 15 states. [2020-11-06 22:45:15,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:45:15,531 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2020-11-06 22:45:15,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-06 22:45:15,532 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 16 [2020-11-06 22:45:15,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:45:15,533 INFO L225 Difference]: With dead ends: 26 [2020-11-06 22:45:15,533 INFO L226 Difference]: Without dead ends: 19 [2020-11-06 22:45:15,535 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2020-11-06 22:45:15,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-11-06 22:45:15,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-11-06 22:45:15,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-11-06 22:45:15,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-11-06 22:45:15,542 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 16 [2020-11-06 22:45:15,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:45:15,542 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-11-06 22:45:15,542 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-06 22:45:15,543 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-11-06 22:45:15,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-06 22:45:15,544 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:45:15,544 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:45:15,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-06 22:45:15,761 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:45:15,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:45:15,763 INFO L82 PathProgramCache]: Analyzing trace with hash 906383615, now seen corresponding path program 2 times [2020-11-06 22:45:15,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:45:15,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210705313] [2020-11-06 22:45:15,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:45:15,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:16,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:45:16,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:16,084 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:45:16,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210705313] [2020-11-06 22:45:16,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020637869] [2020-11-06 22:45:16,085 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:45:16,137 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-06 22:45:16,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-06 22:45:16,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-06 22:45:16,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:45:16,269 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:45:16,274 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 2, 1] term [2020-11-06 22:45:16,274 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:45:16,276 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:45:16,321 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:45:16,321 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:45:16,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 18 [2020-11-06 22:45:16,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036917514] [2020-11-06 22:45:16,322 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-11-06 22:45:16,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:45:16,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-11-06 22:45:16,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2020-11-06 22:45:16,324 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 18 states. [2020-11-06 22:45:17,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:45:17,062 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2020-11-06 22:45:17,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-06 22:45:17,067 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 18 [2020-11-06 22:45:17,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:45:17,068 INFO L225 Difference]: With dead ends: 31 [2020-11-06 22:45:17,069 INFO L226 Difference]: Without dead ends: 23 [2020-11-06 22:45:17,070 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=134, Invalid=736, Unknown=0, NotChecked=0, Total=870 [2020-11-06 22:45:17,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-06 22:45:17,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-11-06 22:45:17,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-06 22:45:17,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2020-11-06 22:45:17,076 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 18 [2020-11-06 22:45:17,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:45:17,077 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2020-11-06 22:45:17,077 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-11-06 22:45:17,077 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2020-11-06 22:45:17,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-06 22:45:17,078 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:45:17,078 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:45:17,293 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:45:17,294 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:45:17,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:45:17,295 INFO L82 PathProgramCache]: Analyzing trace with hash -655305797, now seen corresponding path program 3 times [2020-11-06 22:45:17,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:45:17,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450871722] [2020-11-06 22:45:17,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:45:17,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:17,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:45:17,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:17,574 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-06 22:45:17,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450871722] [2020-11-06 22:45:17,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618602597] [2020-11-06 22:45:17,575 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:45:17,626 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-11-06 22:45:17,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-06 22:45:17,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-06 22:45:17,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:45:17,855 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:45:17,858 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 2, 1] term [2020-11-06 22:45:17,858 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:45:17,860 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:45:17,909 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:45:17,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:45:17,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15] total 23 [2020-11-06 22:45:17,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129537878] [2020-11-06 22:45:17,911 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-11-06 22:45:17,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:45:17,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-11-06 22:45:17,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=442, Unknown=0, NotChecked=0, Total=506 [2020-11-06 22:45:17,912 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 23 states. [2020-11-06 22:45:19,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:45:19,049 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2020-11-06 22:45:19,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-06 22:45:19,051 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 22 [2020-11-06 22:45:19,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:45:19,051 INFO L225 Difference]: With dead ends: 26 [2020-11-06 22:45:19,051 INFO L226 Difference]: Without dead ends: 0 [2020-11-06 22:45:19,053 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=180, Invalid=1302, Unknown=0, NotChecked=0, Total=1482 [2020-11-06 22:45:19,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-06 22:45:19,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-06 22:45:19,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-06 22:45:19,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-06 22:45:19,054 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2020-11-06 22:45:19,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:45:19,054 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-06 22:45:19,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-11-06 22:45:19,054 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-06 22:45:19,055 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-06 22:45:19,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:45:19,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-06 22:45:19,594 INFO L266 CegarLoopResult]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2020-11-06 22:45:19,594 INFO L269 CegarLoopResult]: At program point reach_errorENTRY(line 12) the Hoare annotation is: true [2020-11-06 22:45:19,594 INFO L266 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-11-06 22:45:19,594 INFO L266 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-11-06 22:45:19,595 INFO L266 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-06 22:45:19,595 INFO L266 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-11-06 22:45:19,595 INFO L262 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2020-11-06 22:45:19,595 INFO L266 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-11-06 22:45:19,595 INFO L266 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-06 22:45:19,596 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-06 22:45:19,596 INFO L269 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-11-06 22:45:19,596 INFO L266 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-06 22:45:19,596 INFO L269 CegarLoopResult]: At program point mainENTRY(lines 22 29) the Hoare annotation is: true [2020-11-06 22:45:19,596 INFO L266 CegarLoopResult]: For program point mainEXIT(lines 22 29) no Hoare annotation was computed. [2020-11-06 22:45:19,596 INFO L266 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-11-06 22:45:19,596 INFO L266 CegarLoopResult]: For program point L25-2(lines 25 27) no Hoare annotation was computed. [2020-11-06 22:45:19,597 INFO L262 CegarLoopResult]: At program point L25-3(lines 25 27) the Hoare annotation is: (or (let ((.cse1 (+ main_~sn~0 2)) (.cse0 (* 2 main_~i~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0) (< main_~sn~0 (+ (* 2 main_~n~0) 1)))) (and (= main_~sn~0 0) (= main_~i~0 1))) [2020-11-06 22:45:19,597 INFO L262 CegarLoopResult]: At program point L25-4(lines 25 27) the Hoare annotation is: (or (= main_~sn~0 0) (let ((.cse0 (* 2 main_~n~0))) (and (<= .cse0 main_~sn~0) (< main_~sn~0 (+ .cse0 1))))) [2020-11-06 22:45:19,597 INFO L266 CegarLoopResult]: For program point mainFINAL(lines 22 29) no Hoare annotation was computed. [2020-11-06 22:45:19,597 INFO L262 CegarLoopResult]: At program point L17(line 17) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-11-06 22:45:19,597 INFO L266 CegarLoopResult]: For program point L16(lines 16 18) no Hoare annotation was computed. [2020-11-06 22:45:19,597 INFO L266 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-11-06 22:45:19,598 INFO L269 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 15 20) the Hoare annotation is: true [2020-11-06 22:45:19,598 INFO L266 CegarLoopResult]: For program point L16-2(lines 15 20) no Hoare annotation was computed. [2020-11-06 22:45:19,598 INFO L266 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 15 20) no Hoare annotation was computed. [2020-11-06 22:45:19,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:45:19 BoogieIcfgContainer [2020-11-06 22:45:19,622 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 22:45:19,626 INFO L168 Benchmark]: Toolchain (without parser) took 6777.69 ms. Allocated memory was 154.1 MB in the beginning and 230.7 MB in the end (delta: 76.5 MB). Free memory was 129.8 MB in the beginning and 175.3 MB in the end (delta: -45.5 MB). Peak memory consumption was 31.8 MB. Max. memory is 8.0 GB. [2020-11-06 22:45:19,627 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 154.1 MB. Free memory is still 126.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 22:45:19,629 INFO L168 Benchmark]: CACSL2BoogieTranslator took 242.53 ms. Allocated memory is still 154.1 MB. Free memory was 129.2 MB in the beginning and 119.8 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-11-06 22:45:19,631 INFO L168 Benchmark]: Boogie Preprocessor took 36.00 ms. Allocated memory is still 154.1 MB. Free memory was 119.8 MB in the beginning and 118.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-06 22:45:19,636 INFO L168 Benchmark]: RCFGBuilder took 428.63 ms. Allocated memory is still 154.1 MB. Free memory was 118.2 MB in the beginning and 105.4 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-11-06 22:45:19,637 INFO L168 Benchmark]: TraceAbstraction took 6057.98 ms. Allocated memory was 154.1 MB in the beginning and 230.7 MB in the end (delta: 76.5 MB). Free memory was 105.0 MB in the beginning and 175.3 MB in the end (delta: -70.3 MB). Peak memory consumption was 7.7 MB. Max. memory is 8.0 GB. [2020-11-06 22:45:19,641 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 154.1 MB. Free memory is still 126.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 242.53 ms. Allocated memory is still 154.1 MB. Free memory was 129.2 MB in the beginning and 119.8 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 36.00 ms. Allocated memory is still 154.1 MB. Free memory was 119.8 MB in the beginning and 118.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 428.63 ms. Allocated memory is still 154.1 MB. Free memory was 118.2 MB in the beginning and 105.4 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6057.98 ms. Allocated memory was 154.1 MB in the beginning and 230.7 MB in the end (delta: 76.5 MB). Free memory was 105.0 MB in the beginning and 175.3 MB in the end (delta: -70.3 MB). Peak memory consumption was 7.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: 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: 25]: Loop Invariant Derived loop invariant: ((2 * i <= sn + 2 && sn + 2 <= 2 * i) && sn < 2 * n + 1) || (sn == 0 && i == 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.6s, OverallIterations: 4, TraceHistogramMax: 4, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 47 SDtfs, 69 SDslu, 187 SDs, 0 SdLazy, 439 SolverSat, 62 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 140 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 659 ImplicationChecksByTransitivity, 3.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 24 PreInvPairs, 35 NumberOfFragments, 80 HoareAnnotationTreeSize, 24 FomulaSimplifications, 63 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 9 FomulaSimplificationsInter, 546 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 126 NumberOfCodeBlocks, 126 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 119 ConstructedInterpolants, 0 QuantifiedInterpolants, 13017 SizeOfPredicates, 9 NumberOfNonLiveVariables, 284 ConjunctsInSsa, 52 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 4/42 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...