/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-b8ad66e [2020-10-23 18:43:08,956 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 18:43:08,961 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 18:43:09,033 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 18:43:09,034 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 18:43:09,039 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 18:43:09,043 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 18:43:09,052 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 18:43:09,056 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 18:43:09,063 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 18:43:09,065 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 18:43:09,066 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 18:43:09,067 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 18:43:09,070 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 18:43:09,073 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 18:43:09,075 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 18:43:09,076 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 18:43:09,080 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 18:43:09,088 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 18:43:09,098 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 18:43:09,100 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 18:43:09,102 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 18:43:09,104 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 18:43:09,107 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 18:43:09,118 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 18:43:09,132 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 18:43:09,133 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 18:43:09,134 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 18:43:09,136 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 18:43:09,196 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 18:43:09,197 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 18:43:09,202 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-23 18:43:09,203 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-23 18:43:09,203 INFO L138 SettingsManager]: * Use SBE=true [2020-10-23 18:43:09,203 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 18:43:09,204 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 18:43:09,204 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 18:43:09,204 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 18:43:09,205 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 18:43:09,206 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 18:43:09,206 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 18:43:09,206 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 18:43:09,207 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 18:43:09,207 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 18:43:09,207 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 18:43:09,207 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 18:43:09,207 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 18:43:09,208 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-23 18:43:09,208 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 18:43:09,208 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 18:43:09,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 18:43:09,209 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 18:43:09,209 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-23 18:43:09,209 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-23 18:43:09,210 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-23 18:43:09,210 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-23 18:43:09,210 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 18:43:09,210 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-23 18:43:09,210 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 18:43:09,788 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 18:43:09,847 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 18:43:09,850 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 18:43:09,852 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 18:43:09,853 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 18:43:09,855 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum01-2.i [2020-10-23 18:43:09,973 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0cb00eefe/090053b218df404f8928b992f78bc6bd/FLAG25ac50940 [2020-10-23 18:43:10,863 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 18:43:10,864 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum01-2.i [2020-10-23 18:43:10,874 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0cb00eefe/090053b218df404f8928b992f78bc6bd/FLAG25ac50940 [2020-10-23 18:43:11,174 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0cb00eefe/090053b218df404f8928b992f78bc6bd [2020-10-23 18:43:11,178 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 18:43:11,186 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 18:43:11,189 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 18:43:11,189 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 18:43:11,195 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 18:43:11,196 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:43:11" (1/1) ... [2020-10-23 18:43:11,201 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3965b1a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:11, skipping insertion in model container [2020-10-23 18:43:11,201 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:43:11" (1/1) ... [2020-10-23 18:43:11,212 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 18:43:11,231 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 18:43:11,427 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:43:11,437 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 18:43:11,455 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:43:11,472 INFO L208 MainTranslator]: Completed translation [2020-10-23 18:43:11,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:11 WrapperNode [2020-10-23 18:43:11,473 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 18:43:11,475 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 18:43:11,475 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 18:43:11,475 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 18:43:11,489 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:11" (1/1) ... [2020-10-23 18:43:11,489 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:11" (1/1) ... [2020-10-23 18:43:11,497 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:11" (1/1) ... [2020-10-23 18:43:11,498 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:11" (1/1) ... [2020-10-23 18:43:11,503 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:11" (1/1) ... [2020-10-23 18:43:11,508 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:11" (1/1) ... [2020-10-23 18:43:11,509 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:11" (1/1) ... [2020-10-23 18:43:11,511 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 18:43:11,513 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 18:43:11,513 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 18:43:11,513 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 18:43:11,514 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:11" (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 18:43:11,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 18:43:11,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 18:43:11,609 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 18:43:11,610 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-23 18:43:11,610 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 18:43:11,610 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 18:43:11,610 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 18:43:11,610 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-23 18:43:11,610 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-23 18:43:11,611 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 18:43:11,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 18:43:11,611 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 18:43:11,611 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 18:43:11,611 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 18:43:11,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 18:43:11,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 18:43:11,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 18:43:11,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 18:43:11,612 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 18:43:11,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 18:43:12,157 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 18:43:12,158 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-23 18:43:12,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:43:12 BoogieIcfgContainer [2020-10-23 18:43:12,162 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 18:43:12,165 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 18:43:12,165 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 18:43:12,170 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 18:43:12,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:43:11" (1/3) ... [2020-10-23 18:43:12,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ed622d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:43:12, skipping insertion in model container [2020-10-23 18:43:12,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:11" (2/3) ... [2020-10-23 18:43:12,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ed622d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:43:12, skipping insertion in model container [2020-10-23 18:43:12,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:43:12" (3/3) ... [2020-10-23 18:43:12,178 INFO L111 eAbstractionObserver]: Analyzing ICFG sum01-2.i [2020-10-23 18:43:12,194 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-23 18:43:12,199 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 18:43:12,219 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 18:43:12,273 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 18:43:12,273 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 18:43:12,273 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-23 18:43:12,273 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 18:43:12,274 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 18:43:12,274 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 18:43:12,274 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 18:43:12,274 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 18:43:12,307 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-10-23 18:43:12,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-23 18:43:12,316 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:43:12,317 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:43:12,318 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:43:12,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:43:12,368 INFO L82 PathProgramCache]: Analyzing trace with hash 584388675, now seen corresponding path program 1 times [2020-10-23 18:43:12,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:43:12,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639460093] [2020-10-23 18:43:12,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:43:12,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:43:12,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:43:12,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:43:12,795 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 18:43:12,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639460093] [2020-10-23 18:43:12,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:43:12,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-23 18:43:12,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466137361] [2020-10-23 18:43:12,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 18:43:12,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:43:12,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 18:43:12,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-23 18:43:12,830 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 6 states. [2020-10-23 18:43:13,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:43:13,143 INFO L93 Difference]: Finished difference Result 46 states and 57 transitions. [2020-10-23 18:43:13,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-23 18:43:13,145 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-23 18:43:13,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:43:13,155 INFO L225 Difference]: With dead ends: 46 [2020-10-23 18:43:13,156 INFO L226 Difference]: Without dead ends: 17 [2020-10-23 18:43:13,160 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-23 18:43:13,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-10-23 18:43:13,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-10-23 18:43:13,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-23 18:43:13,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-10-23 18:43:13,214 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 14 [2020-10-23 18:43:13,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:43:13,214 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-10-23 18:43:13,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 18:43:13,215 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-10-23 18:43:13,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-23 18:43:13,216 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:43:13,216 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:43:13,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 18:43:13,217 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:43:13,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:43:13,218 INFO L82 PathProgramCache]: Analyzing trace with hash -263554975, now seen corresponding path program 1 times [2020-10-23 18:43:13,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:43:13,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705056055] [2020-10-23 18:43:13,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:43:13,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:43:13,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:43:13,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:43:13,578 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:43:13,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705056055] [2020-10-23 18:43:13,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24500131] [2020-10-23 18:43:13,579 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 18:43:13,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:43:13,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-23 18:43:13,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:43:13,805 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-23 18:43:13,886 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:43:13,886 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:43:13,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 15 [2020-10-23 18:43:13,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898649153] [2020-10-23 18:43:13,889 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-23 18:43:13,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:43:13,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-23 18:43:13,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-10-23 18:43:13,892 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 15 states. [2020-10-23 18:43:14,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:43:14,245 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2020-10-23 18:43:14,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-23 18:43:14,245 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 16 [2020-10-23 18:43:14,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:43:14,247 INFO L225 Difference]: With dead ends: 26 [2020-10-23 18:43:14,247 INFO L226 Difference]: Without dead ends: 19 [2020-10-23 18:43:14,250 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 [2020-10-23 18:43:14,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-10-23 18:43:14,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-10-23 18:43:14,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-23 18:43:14,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-10-23 18:43:14,258 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 16 [2020-10-23 18:43:14,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:43:14,259 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-10-23 18:43:14,259 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-23 18:43:14,259 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-10-23 18:43:14,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-23 18:43:14,260 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:43:14,260 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:43:14,474 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-10-23 18:43:14,476 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:43:14,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:43:14,478 INFO L82 PathProgramCache]: Analyzing trace with hash 906383615, now seen corresponding path program 2 times [2020-10-23 18:43:14,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:43:14,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312250849] [2020-10-23 18:43:14,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:43:14,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:43:14,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:43:14,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:43:14,849 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:43:14,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312250849] [2020-10-23 18:43:14,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230764636] [2020-10-23 18:43:14,851 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 [2020-10-23 18:43:14,920 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-23 18:43:14,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 18:43:14,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-23 18:43:14,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:43:15,093 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-23 18:43:15,104 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 2, 1] term [2020-10-23 18:43:15,105 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-23 18:43:15,109 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-23 18:43:15,179 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:43:15,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:43:15,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 18 [2020-10-23 18:43:15,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820210963] [2020-10-23 18:43:15,183 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-23 18:43:15,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:43:15,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-23 18:43:15,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2020-10-23 18:43:15,186 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 18 states. [2020-10-23 18:43:16,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:43:16,070 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2020-10-23 18:43:16,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-23 18:43:16,071 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 18 [2020-10-23 18:43:16,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:43:16,073 INFO L225 Difference]: With dead ends: 31 [2020-10-23 18:43:16,073 INFO L226 Difference]: Without dead ends: 23 [2020-10-23 18:43:16,074 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=134, Invalid=736, Unknown=0, NotChecked=0, Total=870 [2020-10-23 18:43:16,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-23 18:43:16,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-10-23 18:43:16,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-23 18:43:16,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2020-10-23 18:43:16,082 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 18 [2020-10-23 18:43:16,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:43:16,083 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2020-10-23 18:43:16,083 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-23 18:43:16,083 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2020-10-23 18:43:16,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-23 18:43:16,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:43:16,084 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:43:16,297 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:43:16,299 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:43:16,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:43:16,300 INFO L82 PathProgramCache]: Analyzing trace with hash -655305797, now seen corresponding path program 3 times [2020-10-23 18:43:16,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:43:16,301 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993271722] [2020-10-23 18:43:16,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:43:16,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:43:16,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:43:16,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:43:16,637 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-23 18:43:16,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993271722] [2020-10-23 18:43:16,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789180374] [2020-10-23 18:43:16,639 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 [2020-10-23 18:43:16,732 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-10-23 18:43:16,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 18:43:16,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 24 conjunts are in the unsatisfiable core [2020-10-23 18:43:16,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:43:17,048 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-23 18:43:17,052 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 2, 1] term [2020-10-23 18:43:17,053 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-23 18:43:17,055 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-23 18:43:17,126 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:43:17,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:43:17,127 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15] total 23 [2020-10-23 18:43:17,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697743243] [2020-10-23 18:43:17,129 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-23 18:43:17,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:43:17,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-23 18:43:17,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=442, Unknown=0, NotChecked=0, Total=506 [2020-10-23 18:43:17,138 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 23 states. [2020-10-23 18:43:18,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:43:18,462 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2020-10-23 18:43:18,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-23 18:43:18,462 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 22 [2020-10-23 18:43:18,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:43:18,463 INFO L225 Difference]: With dead ends: 26 [2020-10-23 18:43:18,463 INFO L226 Difference]: Without dead ends: 0 [2020-10-23 18:43:18,466 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=180, Invalid=1302, Unknown=0, NotChecked=0, Total=1482 [2020-10-23 18:43:18,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-23 18:43:18,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-23 18:43:18,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-23 18:43:18,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-23 18:43:18,467 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2020-10-23 18:43:18,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:43:18,467 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-23 18:43:18,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-23 18:43:18,468 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-23 18:43:18,468 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-23 18:43:18,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:43:18,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-23 18:43:19,010 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2020-10-23 18:43:19,011 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 12) the Hoare annotation is: true [2020-10-23 18:43:19,011 INFO L274 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-10-23 18:43:19,011 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-10-23 18:43:19,011 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-10-23 18:43:19,012 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-23 18:43:19,012 INFO L270 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)|)) [2020-10-23 18:43:19,012 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-23 18:43:19,012 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-23 18:43:19,012 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-23 18:43:19,012 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-23 18:43:19,013 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-23 18:43:19,013 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 22 29) the Hoare annotation is: true [2020-10-23 18:43:19,013 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 22 29) no Hoare annotation was computed. [2020-10-23 18:43:19,013 INFO L274 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-10-23 18:43:19,013 INFO L274 CegarLoopResult]: For program point L25-2(lines 25 27) no Hoare annotation was computed. [2020-10-23 18:43:19,013 INFO L270 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))) [2020-10-23 18:43:19,014 INFO L270 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))))) [2020-10-23 18:43:19,014 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 22 29) no Hoare annotation was computed. [2020-10-23 18:43:19,014 INFO L270 CegarLoopResult]: At program point L17(line 17) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-23 18:43:19,014 INFO L274 CegarLoopResult]: For program point L16(lines 16 18) no Hoare annotation was computed. [2020-10-23 18:43:19,014 INFO L274 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-10-23 18:43:19,015 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 15 20) the Hoare annotation is: true [2020-10-23 18:43:19,015 INFO L274 CegarLoopResult]: For program point L16-2(lines 15 20) no Hoare annotation was computed. [2020-10-23 18:43:19,015 INFO L274 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 15 20) no Hoare annotation was computed. [2020-10-23 18:43:19,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:43:19 BoogieIcfgContainer [2020-10-23 18:43:19,034 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 18:43:19,038 INFO L168 Benchmark]: Toolchain (without parser) took 7856.31 ms. Allocated memory was 156.2 MB in the beginning and 244.3 MB in the end (delta: 88.1 MB). Free memory was 131.5 MB in the beginning and 218.0 MB in the end (delta: -86.5 MB). Peak memory consumption was 110.3 MB. Max. memory is 8.0 GB. [2020-10-23 18:43:19,039 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 156.2 MB. Free memory is still 126.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 18:43:19,040 INFO L168 Benchmark]: CACSL2BoogieTranslator took 285.22 ms. Allocated memory is still 156.2 MB. Free memory was 130.8 MB in the beginning and 121.6 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-23 18:43:19,041 INFO L168 Benchmark]: Boogie Preprocessor took 36.68 ms. Allocated memory is still 156.2 MB. Free memory was 121.4 MB in the beginning and 120.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-23 18:43:19,042 INFO L168 Benchmark]: RCFGBuilder took 648.95 ms. Allocated memory is still 156.2 MB. Free memory was 119.9 MB in the beginning and 106.9 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-10-23 18:43:19,043 INFO L168 Benchmark]: TraceAbstraction took 6869.78 ms. Allocated memory was 156.2 MB in the beginning and 244.3 MB in the end (delta: 88.1 MB). Free memory was 106.5 MB in the beginning and 218.0 MB in the end (delta: -111.6 MB). Peak memory consumption was 85.1 MB. Max. memory is 8.0 GB. [2020-10-23 18:43:19,047 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 156.2 MB. Free memory is still 126.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 285.22 ms. Allocated memory is still 156.2 MB. Free memory was 130.8 MB in the beginning and 121.6 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 36.68 ms. Allocated memory is still 156.2 MB. Free memory was 121.4 MB in the beginning and 120.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 648.95 ms. Allocated memory is still 156.2 MB. Free memory was 119.9 MB in the beginning and 106.9 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6869.78 ms. Allocated memory was 156.2 MB in the beginning and 244.3 MB in the end (delta: 88.1 MB). Free memory was 106.5 MB in the beginning and 218.0 MB in the end (delta: -111.6 MB). Peak memory consumption was 85.1 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: 6.4s, OverallIterations: 4, TraceHistogramMax: 4, AutomataDifference: 2.9s, 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, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 140 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 659 ImplicationChecksByTransitivity, 3.4s 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, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 546 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.0s 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...