/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/large_const.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-06 22:46:11,700 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 22:46:11,704 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 22:46:11,757 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-06 22:46:11,757 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-06 22:46:11,759 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-06 22:46:11,761 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-06 22:46:11,763 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-06 22:46:11,765 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-06 22:46:11,766 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-06 22:46:11,768 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-06 22:46:11,769 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-06 22:46:11,769 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-06 22:46:11,771 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-06 22:46:11,772 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-06 22:46:11,773 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-06 22:46:11,774 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-06 22:46:11,775 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-06 22:46:11,794 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-06 22:46:11,798 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-06 22:46:11,803 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-06 22:46:11,806 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-06 22:46:11,808 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-06 22:46:11,812 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-06 22:46:11,817 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-06 22:46:11,829 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 22:46:11,830 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 22:46:11,832 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 22:46:11,833 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 22:46:11,886 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 22:46:11,887 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 22:46:11,890 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-06 22:46:11,891 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-06 22:46:11,891 INFO L138 SettingsManager]: * Use SBE=true [2020-11-06 22:46:11,891 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 22:46:11,891 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 22:46:11,891 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 22:46:11,892 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 22:46:11,892 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 22:46:11,893 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 22:46:11,894 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 22:46:11,894 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 22:46:11,894 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 22:46:11,894 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 22:46:11,894 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 22:46:11,895 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 22:46:11,895 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 22:46:11,895 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-06 22:46:11,896 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 22:46:11,897 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 22:46:11,898 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 22:46:11,903 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 22:46:11,903 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-06 22:46:11,903 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-06 22:46:11,903 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-06 22:46:11,904 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-06 22:46:11,904 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 22:46:11,906 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-06 22:46:11,907 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 22:46:12,325 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 22:46:12,353 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 22:46:12,356 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 22:46:12,357 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 22:46:12,361 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 22:46:12,362 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/large_const.i [2020-11-06 22:46:12,443 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32c56a975/2f3a451ee6bd47ce9bc0334f9dd25b78/FLAGd388f0b50 [2020-11-06 22:46:13,070 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 22:46:13,070 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/large_const.i [2020-11-06 22:46:13,078 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32c56a975/2f3a451ee6bd47ce9bc0334f9dd25b78/FLAGd388f0b50 [2020-11-06 22:46:13,093 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32c56a975/2f3a451ee6bd47ce9bc0334f9dd25b78 [2020-11-06 22:46:13,096 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 22:46:13,102 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 22:46:13,104 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 22:46:13,104 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 22:46:13,108 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 22:46:13,109 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:46:13" (1/1) ... [2020-11-06 22:46:13,112 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1da95992 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:13, skipping insertion in model container [2020-11-06 22:46:13,112 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:46:13" (1/1) ... [2020-11-06 22:46:13,121 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 22:46:13,137 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 22:46:13,311 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:46:13,321 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 22:46:13,346 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:46:13,363 INFO L208 MainTranslator]: Completed translation [2020-11-06 22:46:13,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:13 WrapperNode [2020-11-06 22:46:13,363 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 22:46:13,365 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 22:46:13,365 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 22:46:13,365 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 22:46:13,376 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:13" (1/1) ... [2020-11-06 22:46:13,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:13" (1/1) ... [2020-11-06 22:46:13,384 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:13" (1/1) ... [2020-11-06 22:46:13,384 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:13" (1/1) ... [2020-11-06 22:46:13,391 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:13" (1/1) ... [2020-11-06 22:46:13,396 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:13" (1/1) ... [2020-11-06 22:46:13,397 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:13" (1/1) ... [2020-11-06 22:46:13,400 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 22:46:13,401 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 22:46:13,401 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 22:46:13,401 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 22:46:13,402 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:13" (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 22:46:13,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 22:46:13,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 22:46:13,475 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 22:46:13,475 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-06 22:46:13,476 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-06 22:46:13,476 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 22:46:13,476 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 22:46:13,476 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 22:46:13,476 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-11-06 22:46:13,476 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-11-06 22:46:13,477 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 22:46:13,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 22:46:13,477 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-06 22:46:13,477 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-06 22:46:13,477 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-06 22:46:13,477 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 22:46:13,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 22:46:13,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 22:46:13,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 22:46:13,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 22:46:13,478 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 22:46:13,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 22:46:13,773 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 22:46:13,773 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-11-06 22:46:13,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:46:13 BoogieIcfgContainer [2020-11-06 22:46:13,775 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 22:46:13,778 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 22:46:13,778 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 22:46:13,782 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 22:46:13,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:46:13" (1/3) ... [2020-11-06 22:46:13,783 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@188485af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:46:13, skipping insertion in model container [2020-11-06 22:46:13,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:13" (2/3) ... [2020-11-06 22:46:13,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@188485af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:46:13, skipping insertion in model container [2020-11-06 22:46:13,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:46:13" (3/3) ... [2020-11-06 22:46:13,786 INFO L111 eAbstractionObserver]: Analyzing ICFG large_const.i [2020-11-06 22:46:13,804 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-06 22:46:13,808 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-06 22:46:13,823 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-06 22:46:13,882 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 22:46:13,882 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 22:46:13,883 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-06 22:46:13,883 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 22:46:13,883 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 22:46:13,883 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 22:46:13,883 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 22:46:13,883 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 22:46:13,908 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-11-06 22:46:13,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-06 22:46:13,915 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:46:13,916 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:46:13,917 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:46:13,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:46:13,923 INFO L82 PathProgramCache]: Analyzing trace with hash -163533008, now seen corresponding path program 1 times [2020-11-06 22:46:13,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:46:13,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845581564] [2020-11-06 22:46:13,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:46:14,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:14,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:46:14,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:14,311 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 22:46:14,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845581564] [2020-11-06 22:46:14,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:46:14,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-06 22:46:14,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133834992] [2020-11-06 22:46:14,320 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-06 22:46:14,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:46:14,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-06 22:46:14,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-06 22:46:14,339 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 6 states. [2020-11-06 22:46:14,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:46:14,586 INFO L93 Difference]: Finished difference Result 54 states and 72 transitions. [2020-11-06 22:46:14,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-06 22:46:14,588 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-11-06 22:46:14,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:46:14,597 INFO L225 Difference]: With dead ends: 54 [2020-11-06 22:46:14,597 INFO L226 Difference]: Without dead ends: 24 [2020-11-06 22:46:14,601 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-11-06 22:46:14,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-11-06 22:46:14,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-11-06 22:46:14,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-11-06 22:46:14,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2020-11-06 22:46:14,647 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 16 [2020-11-06 22:46:14,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:46:14,647 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2020-11-06 22:46:14,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-06 22:46:14,648 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2020-11-06 22:46:14,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-06 22:46:14,649 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:46:14,649 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:46:14,649 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 22:46:14,650 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:46:14,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:46:14,650 INFO L82 PathProgramCache]: Analyzing trace with hash 1958743745, now seen corresponding path program 1 times [2020-11-06 22:46:14,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:46:14,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253828414] [2020-11-06 22:46:14,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:46:14,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:14,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:46:14,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:14,853 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 22:46:14,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253828414] [2020-11-06 22:46:14,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121956922] [2020-11-06 22:46:14,855 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 22:46:14,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:14,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-06 22:46:14,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:46:15,035 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:46:15,076 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 22:46:15,076 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:46:15,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2020-11-06 22:46:15,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680149918] [2020-11-06 22:46:15,079 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-06 22:46:15,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:46:15,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-06 22:46:15,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-11-06 22:46:15,081 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand 11 states. [2020-11-06 22:46:15,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:46:15,511 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2020-11-06 22:46:15,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-06 22:46:15,512 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2020-11-06 22:46:15,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:46:15,515 INFO L225 Difference]: With dead ends: 46 [2020-11-06 22:46:15,515 INFO L226 Difference]: Without dead ends: 42 [2020-11-06 22:46:15,517 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-11-06 22:46:15,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-11-06 22:46:15,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 34. [2020-11-06 22:46:15,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-11-06 22:46:15,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2020-11-06 22:46:15,531 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 19 [2020-11-06 22:46:15,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:46:15,531 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2020-11-06 22:46:15,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-06 22:46:15,531 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2020-11-06 22:46:15,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-06 22:46:15,532 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:46:15,533 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:46:15,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-06 22:46:15,747 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:46:15,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:46:15,748 INFO L82 PathProgramCache]: Analyzing trace with hash -175634455, now seen corresponding path program 1 times [2020-11-06 22:46:15,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:46:15,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886709767] [2020-11-06 22:46:15,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:46:15,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:15,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:46:15,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:15,875 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 22:46:15,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886709767] [2020-11-06 22:46:15,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537572169] [2020-11-06 22:46:15,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 22:46:15,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:15,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-06 22:46:15,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:46:15,967 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:46:15,998 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 22:46:15,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:46:15,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2020-11-06 22:46:15,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372593132] [2020-11-06 22:46:15,999 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-06 22:46:15,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:46:16,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-06 22:46:16,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-11-06 22:46:16,000 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand 11 states. [2020-11-06 22:46:16,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:46:16,445 INFO L93 Difference]: Finished difference Result 56 states and 67 transitions. [2020-11-06 22:46:16,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-06 22:46:16,446 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 20 [2020-11-06 22:46:16,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:46:16,449 INFO L225 Difference]: With dead ends: 56 [2020-11-06 22:46:16,449 INFO L226 Difference]: Without dead ends: 52 [2020-11-06 22:46:16,450 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-11-06 22:46:16,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-11-06 22:46:16,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 40. [2020-11-06 22:46:16,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-11-06 22:46:16,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 49 transitions. [2020-11-06 22:46:16,460 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 49 transitions. Word has length 20 [2020-11-06 22:46:16,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:46:16,461 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 49 transitions. [2020-11-06 22:46:16,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-06 22:46:16,461 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 49 transitions. [2020-11-06 22:46:16,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-06 22:46:16,462 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:46:16,462 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:46:16,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:46:16,676 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:46:16,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:46:16,677 INFO L82 PathProgramCache]: Analyzing trace with hash -568661465, now seen corresponding path program 1 times [2020-11-06 22:46:16,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:46:16,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189756294] [2020-11-06 22:46:16,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:46:16,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:16,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:46:16,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:16,847 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 22:46:16,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189756294] [2020-11-06 22:46:16,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843418571] [2020-11-06 22:46:16,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 22:46:16,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:16,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-06 22:46:16,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:46:16,945 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:46:16,977 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 22:46:16,977 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:46:16,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2020-11-06 22:46:16,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078390442] [2020-11-06 22:46:16,978 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-06 22:46:16,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:46:16,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-06 22:46:16,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-11-06 22:46:16,979 INFO L87 Difference]: Start difference. First operand 40 states and 49 transitions. Second operand 11 states. [2020-11-06 22:46:17,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:46:17,416 INFO L93 Difference]: Finished difference Result 60 states and 74 transitions. [2020-11-06 22:46:17,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-06 22:46:17,416 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 20 [2020-11-06 22:46:17,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:46:17,418 INFO L225 Difference]: With dead ends: 60 [2020-11-06 22:46:17,420 INFO L226 Difference]: Without dead ends: 56 [2020-11-06 22:46:17,421 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-11-06 22:46:17,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-11-06 22:46:17,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 45. [2020-11-06 22:46:17,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-11-06 22:46:17,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 58 transitions. [2020-11-06 22:46:17,439 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 58 transitions. Word has length 20 [2020-11-06 22:46:17,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:46:17,440 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 58 transitions. [2020-11-06 22:46:17,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-06 22:46:17,440 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 58 transitions. [2020-11-06 22:46:17,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-06 22:46:17,442 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:46:17,443 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:46:17,655 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:46:17,656 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:46:17,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:46:17,657 INFO L82 PathProgramCache]: Analyzing trace with hash 1597716218, now seen corresponding path program 1 times [2020-11-06 22:46:17,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:46:17,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922729288] [2020-11-06 22:46:17,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:46:17,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:17,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:46:17,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:17,730 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:46:17,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922729288] [2020-11-06 22:46:17,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160440288] [2020-11-06 22:46:17,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:46:17,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:17,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-06 22:46:17,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:46:17,829 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:46:17,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-06 22:46:17,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 8 [2020-11-06 22:46:17,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015519180] [2020-11-06 22:46:17,830 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-06 22:46:17,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:46:17,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-06 22:46:17,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-11-06 22:46:17,831 INFO L87 Difference]: Start difference. First operand 45 states and 58 transitions. Second operand 5 states. [2020-11-06 22:46:17,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:46:17,867 INFO L93 Difference]: Finished difference Result 66 states and 82 transitions. [2020-11-06 22:46:17,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-06 22:46:17,868 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-11-06 22:46:17,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:46:17,869 INFO L225 Difference]: With dead ends: 66 [2020-11-06 22:46:17,870 INFO L226 Difference]: Without dead ends: 32 [2020-11-06 22:46:17,870 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-11-06 22:46:17,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-11-06 22:46:17,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-11-06 22:46:17,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-06 22:46:17,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2020-11-06 22:46:17,878 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 23 [2020-11-06 22:46:17,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:46:17,878 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2020-11-06 22:46:17,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-06 22:46:17,879 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2020-11-06 22:46:17,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-06 22:46:17,879 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:46:17,879 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:46:18,090 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:46:18,091 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:46:18,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:46:18,092 INFO L82 PathProgramCache]: Analyzing trace with hash 764253185, now seen corresponding path program 1 times [2020-11-06 22:46:18,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:46:18,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696312825] [2020-11-06 22:46:18,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:46:18,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:18,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:46:18,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:18,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-11-06 22:46:18,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:18,254 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:46:18,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696312825] [2020-11-06 22:46:18,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90788649] [2020-11-06 22:46:18,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:46:18,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:18,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-06 22:46:18,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:46:18,389 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:46:18,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-06 22:46:18,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2020-11-06 22:46:18,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930998438] [2020-11-06 22:46:18,391 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-06 22:46:18,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:46:18,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-06 22:46:18,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-11-06 22:46:18,392 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand 5 states. [2020-11-06 22:46:18,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:46:18,423 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2020-11-06 22:46:18,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-06 22:46:18,424 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-11-06 22:46:18,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:46:18,424 INFO L225 Difference]: With dead ends: 32 [2020-11-06 22:46:18,425 INFO L226 Difference]: Without dead ends: 0 [2020-11-06 22:46:18,425 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-11-06 22:46:18,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-06 22:46:18,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-06 22:46:18,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-06 22:46:18,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-06 22:46:18,426 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2020-11-06 22:46:18,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:46:18,427 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-06 22:46:18,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-06 22:46:18,427 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-06 22:46:18,427 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-06 22:46:18,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-11-06 22:46:18,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-06 22:46:18,910 WARN L194 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 24 [2020-11-06 22:46:19,046 WARN L194 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 30 [2020-11-06 22:46:19,141 INFO L266 CegarLoopResult]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2020-11-06 22:46:19,141 INFO L269 CegarLoopResult]: At program point reach_errorENTRY(line 12) the Hoare annotation is: true [2020-11-06 22:46:19,141 INFO L266 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-11-06 22:46:19,141 INFO L266 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-11-06 22:46:19,142 INFO L266 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-06 22:46:19,142 INFO L266 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-11-06 22:46:19,142 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 22:46:19,142 INFO L266 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-11-06 22:46:19,142 INFO L266 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-06 22:46:19,142 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-06 22:46:19,143 INFO L269 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-11-06 22:46:19,143 INFO L266 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-06 22:46:19,143 INFO L266 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-11-06 22:46:19,143 INFO L266 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2020-11-06 22:46:19,143 INFO L266 CegarLoopResult]: For program point L15-2(lines 14 16) no Hoare annotation was computed. [2020-11-06 22:46:19,143 INFO L266 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2020-11-06 22:46:19,143 INFO L266 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-11-06 22:46:19,144 INFO L266 CegarLoopResult]: For program point mainEXIT(lines 24 52) no Hoare annotation was computed. [2020-11-06 22:46:19,144 INFO L266 CegarLoopResult]: For program point mainFINAL(lines 24 52) no Hoare annotation was computed. [2020-11-06 22:46:19,144 INFO L262 CegarLoopResult]: At program point L46-2(lines 46 50) the Hoare annotation is: (let ((.cse0 (<= 4000 main_~c1~0)) (.cse1 (<= 1 main_~i~0)) (.cse2 (<= 2000 main_~c2~0)) (.cse3 (<= 10000 main_~c3~0)) (.cse4 (< main_~n~0 2))) (or (and (<= 1 main_~j~0) .cse0 .cse1 .cse2 .cse3 .cse4) (and (<= 0 main_~j~0) .cse0 .cse1 (<= 2000 main_~k~0) .cse2 .cse3 .cse4) (and (<= main_~n~0 0) (= main_~i~0 0) (= main_~j~0 0)))) [2020-11-06 22:46:19,144 INFO L266 CegarLoopResult]: For program point L46-3(lines 46 50) no Hoare annotation was computed. [2020-11-06 22:46:19,144 INFO L266 CegarLoopResult]: For program point L40(lines 40 43) no Hoare annotation was computed. [2020-11-06 22:46:19,144 INFO L266 CegarLoopResult]: For program point L38(lines 38 43) no Hoare annotation was computed. [2020-11-06 22:46:19,145 INFO L262 CegarLoopResult]: At program point L40-2(lines 34 44) the Hoare annotation is: (let ((.cse0 (<= 4000 main_~c1~0)) (.cse1 (<= 2000 main_~c2~0)) (.cse2 (<= 10000 main_~c3~0))) (or (and .cse0 (<= 1 main_~i~0) (<= 2000 main_~k~0) .cse1 .cse2 (< main_~n~0 2)) (and .cse0 (= main_~k~0 0) (= main_~i~0 0) .cse1 .cse2))) [2020-11-06 22:46:19,145 INFO L266 CegarLoopResult]: For program point L34-2(lines 34 44) no Hoare annotation was computed. [2020-11-06 22:46:19,149 INFO L269 CegarLoopResult]: At program point mainENTRY(lines 24 52) the Hoare annotation is: true [2020-11-06 22:46:19,149 INFO L262 CegarLoopResult]: At program point L47(line 47) the Hoare annotation is: (and (<= 0 main_~j~0) (<= 4000 main_~c1~0) (<= 1 main_~i~0) (<= 2000 main_~k~0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0) (< main_~n~0 2)) [2020-11-06 22:46:19,149 INFO L266 CegarLoopResult]: For program point L47-1(line 47) no Hoare annotation was computed. [2020-11-06 22:46:19,149 INFO L266 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-11-06 22:46:19,149 INFO L266 CegarLoopResult]: For program point L18-2(lines 17 22) no Hoare annotation was computed. [2020-11-06 22:46:19,149 INFO L269 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2020-11-06 22:46:19,150 INFO L266 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 17 22) no Hoare annotation was computed. [2020-11-06 22:46:19,150 INFO L262 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (not (<= 1 |__VERIFIER_assert_#in~cond|)) [2020-11-06 22:46:19,150 INFO L266 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2020-11-06 22:46:19,150 INFO L266 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-11-06 22:46:19,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:46:19 BoogieIcfgContainer [2020-11-06 22:46:19,182 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 22:46:19,190 INFO L168 Benchmark]: Toolchain (without parser) took 6085.33 ms. Allocated memory was 154.1 MB in the beginning and 185.6 MB in the end (delta: 31.5 MB). Free memory was 128.8 MB in the beginning and 115.5 MB in the end (delta: 13.3 MB). Peak memory consumption was 99.8 MB. Max. memory is 8.0 GB. [2020-11-06 22:46:19,191 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 154.1 MB. Free memory is still 126.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 22:46:19,193 INFO L168 Benchmark]: CACSL2BoogieTranslator took 259.81 ms. Allocated memory is still 154.1 MB. Free memory was 128.0 MB in the beginning and 118.4 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-11-06 22:46:19,194 INFO L168 Benchmark]: Boogie Preprocessor took 35.18 ms. Allocated memory is still 154.1 MB. Free memory was 118.4 MB in the beginning and 117.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-06 22:46:19,195 INFO L168 Benchmark]: RCFGBuilder took 374.50 ms. Allocated memory is still 154.1 MB. Free memory was 116.8 MB in the beginning and 134.9 MB in the end (delta: -18.1 MB). Peak memory consumption was 18.5 MB. Max. memory is 8.0 GB. [2020-11-06 22:46:19,196 INFO L168 Benchmark]: TraceAbstraction took 5404.22 ms. Allocated memory was 154.1 MB in the beginning and 185.6 MB in the end (delta: 31.5 MB). Free memory was 134.4 MB in the beginning and 115.5 MB in the end (delta: 18.9 MB). Peak memory consumption was 104.3 MB. Max. memory is 8.0 GB. [2020-11-06 22:46:19,207 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 154.1 MB. Free memory is still 126.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 259.81 ms. Allocated memory is still 154.1 MB. Free memory was 128.0 MB in the beginning and 118.4 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 35.18 ms. Allocated memory is still 154.1 MB. Free memory was 118.4 MB in the beginning and 117.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 374.50 ms. Allocated memory is still 154.1 MB. Free memory was 116.8 MB in the beginning and 134.9 MB in the end (delta: -18.1 MB). Peak memory consumption was 18.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5404.22 ms. Allocated memory was 154.1 MB in the beginning and 185.6 MB in the end (delta: 31.5 MB). Free memory was 134.4 MB in the beginning and 115.5 MB in the end (delta: 18.9 MB). Peak memory consumption was 104.3 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: 34]: Loop Invariant Derived loop invariant: (((((4000 <= c1 && 1 <= i) && 2000 <= k) && 2000 <= c2) && 10000 <= c3) && n < 2) || ((((4000 <= c1 && k == 0) && i == 0) && 2000 <= c2) && 10000 <= c3) - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: ((((((1 <= j && 4000 <= c1) && 1 <= i) && 2000 <= c2) && 10000 <= c3) && n < 2) || ((((((0 <= j && 4000 <= c1) && 1 <= i) && 2000 <= k) && 2000 <= c2) && 10000 <= c3) && n < 2)) || ((n <= 0 && i == 0) && j == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.7s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 151 SDtfs, 231 SDslu, 137 SDs, 0 SdLazy, 557 SolverSat, 84 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 180 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=4, 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, 6 MinimizatonAttempts, 33 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 23 PreInvPairs, 29 NumberOfFragments, 144 HoareAnnotationTreeSize, 23 FomulaSimplifications, 942 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 10 FomulaSimplificationsInter, 429 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 232 NumberOfCodeBlocks, 232 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 221 ConstructedInterpolants, 0 QuantifiedInterpolants, 13947 SizeOfPredicates, 12 NumberOfNonLiveVariables, 609 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 11 InterpolantComputations, 3 PerfectInterpolantSequences, 16/26 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...