/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-6253b08 [2021-05-06 00:19:10,807 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-06 00:19:10,809 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-06 00:19:10,846 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-06 00:19:10,868 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-06 00:19:10,870 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-06 00:19:10,871 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-06 00:19:10,873 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-06 00:19:10,875 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-06 00:19:10,876 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-06 00:19:10,878 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-06 00:19:10,884 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-06 00:19:10,885 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-06 00:19:10,887 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-06 00:19:10,900 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-06 00:19:10,902 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-06 00:19:10,908 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-06 00:19:10,926 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-06 00:19:10,927 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-06 00:19:10,927 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-06 00:19:10,932 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2021-05-06 00:19:10,970 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-06 00:19:10,970 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-06 00:19:10,973 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-06 00:19:10,974 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-06 00:19:10,974 INFO L138 SettingsManager]: * Use SBE=true [2021-05-06 00:19:10,974 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-06 00:19:10,974 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-06 00:19:10,974 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-06 00:19:10,974 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-06 00:19:10,975 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-06 00:19:10,975 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-06 00:19:10,976 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-06 00:19:10,976 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-06 00:19:10,976 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-06 00:19:10,976 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-06 00:19:10,976 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-06 00:19:10,976 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-06 00:19:10,977 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-06 00:19:10,977 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-06 00:19:10,977 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-06 00:19:10,977 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 00:19:10,977 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-06 00:19:10,977 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-06 00:19:10,978 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-06 00:19:10,978 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-06 00:19:10,978 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-06 00:19:10,978 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-06 00:19:10,978 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-05-06 00:19:10,978 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-06 00:19:11,283 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-06 00:19:11,300 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-06 00:19:11,303 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-06 00:19:11,304 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-06 00:19:11,304 INFO L275 PluginConnector]: CDTParser initialized [2021-05-06 00:19:11,305 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c [2021-05-06 00:19:11,356 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/155849c2f/157850e8c6df4300803d7510fa28694b/FLAG7b8f69984 [2021-05-06 00:19:11,866 INFO L306 CDTParser]: Found 1 translation units. [2021-05-06 00:19:11,866 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c [2021-05-06 00:19:11,875 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/155849c2f/157850e8c6df4300803d7510fa28694b/FLAG7b8f69984 [2021-05-06 00:19:12,203 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/155849c2f/157850e8c6df4300803d7510fa28694b [2021-05-06 00:19:12,206 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-06 00:19:12,207 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-06 00:19:12,209 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-06 00:19:12,210 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-06 00:19:12,213 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-06 00:19:12,214 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 12:19:12" (1/1) ... [2021-05-06 00:19:12,215 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7af57eb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:19:12, skipping insertion in model container [2021-05-06 00:19:12,215 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 12:19:12" (1/1) ... [2021-05-06 00:19:12,220 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-06 00:19:12,270 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-06 00:19:12,459 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c[15516,15529] [2021-05-06 00:19:12,493 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 00:19:12,500 INFO L203 MainTranslator]: Completed pre-run [2021-05-06 00:19:12,592 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c[15516,15529] [2021-05-06 00:19:12,598 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 00:19:12,614 INFO L208 MainTranslator]: Completed translation [2021-05-06 00:19:12,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:19:12 WrapperNode [2021-05-06 00:19:12,614 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-06 00:19:12,615 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-06 00:19:12,615 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-06 00:19:12,615 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-06 00:19:12,625 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:19:12" (1/1) ... [2021-05-06 00:19:12,625 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:19:12" (1/1) ... [2021-05-06 00:19:12,639 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:19:12" (1/1) ... [2021-05-06 00:19:12,640 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:19:12" (1/1) ... [2021-05-06 00:19:12,684 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:19:12" (1/1) ... [2021-05-06 00:19:12,697 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:19:12" (1/1) ... [2021-05-06 00:19:12,700 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:19:12" (1/1) ... [2021-05-06 00:19:12,704 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-06 00:19:12,705 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-06 00:19:12,705 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-06 00:19:12,705 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-06 00:19:12,720 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:19:12" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 00:19:12,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-06 00:19:12,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-06 00:19:12,791 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-06 00:19:12,791 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-06 00:19:12,791 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-06 00:19:12,791 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-06 00:19:12,791 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-06 00:19:12,792 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-06 00:19:12,792 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_89 [2021-05-06 00:19:12,792 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2021-05-06 00:19:12,793 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-06 00:19:12,794 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-06 00:19:12,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-06 00:19:12,794 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-05-06 00:19:12,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-06 00:19:12,795 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-06 00:19:12,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-06 00:19:12,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-06 00:19:12,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-05-06 00:19:12,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-06 00:19:13,626 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-06 00:19:13,627 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-05-06 00:19:13,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 12:19:13 BoogieIcfgContainer [2021-05-06 00:19:13,628 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-06 00:19:13,630 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-06 00:19:13,630 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-06 00:19:13,633 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-06 00:19:13,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.05 12:19:12" (1/3) ... [2021-05-06 00:19:13,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45b7546f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 12:19:13, skipping insertion in model container [2021-05-06 00:19:13,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:19:12" (2/3) ... [2021-05-06 00:19:13,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45b7546f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 12:19:13, skipping insertion in model container [2021-05-06 00:19:13,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 12:19:13" (3/3) ... [2021-05-06 00:19:13,635 INFO L111 eAbstractionObserver]: Analyzing ICFG aiob_4.c.v+lhb-reducer.c [2021-05-06 00:19:13,640 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-06 00:19:13,643 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-06 00:19:13,657 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-06 00:19:13,687 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-06 00:19:13,687 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-06 00:19:13,687 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-06 00:19:13,687 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-06 00:19:13,687 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-06 00:19:13,687 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-06 00:19:13,687 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-06 00:19:13,687 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-06 00:19:13,707 INFO L276 IsEmpty]: Start isEmpty. Operand has 55 states, 49 states have (on average 1.8775510204081634) internal successors, (92), 50 states have internal predecessors, (92), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-06 00:19:13,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-06 00:19:13,713 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:19:13,714 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:19:13,714 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:19:13,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:19:13,717 INFO L82 PathProgramCache]: Analyzing trace with hash -1054632774, now seen corresponding path program 1 times [2021-05-06 00:19:13,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:19:13,725 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869766426] [2021-05-06 00:19:13,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:19:14,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:19:14,734 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2021-05-06 00:19:14,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:19:14,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:19:14,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:19:14,764 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:19:14,765 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869766426] [2021-05-06 00:19:14,765 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869766426] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 00:19:14,766 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 00:19:14,766 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-05-06 00:19:14,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705042099] [2021-05-06 00:19:14,771 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-05-06 00:19:14,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:19:14,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-05-06 00:19:14,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2021-05-06 00:19:14,788 INFO L87 Difference]: Start difference. First operand has 55 states, 49 states have (on average 1.8775510204081634) internal successors, (92), 50 states have internal predecessors, (92), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 18 states, 18 states have (on average 2.5) internal successors, (45), 17 states have internal predecessors, (45), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:19:15,130 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2021-05-06 00:19:16,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:19:16,051 INFO L93 Difference]: Finished difference Result 92 states and 136 transitions. [2021-05-06 00:19:16,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-05-06 00:19:16,056 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.5) internal successors, (45), 17 states have internal predecessors, (45), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 48 [2021-05-06 00:19:16,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:19:16,063 INFO L225 Difference]: With dead ends: 92 [2021-05-06 00:19:16,063 INFO L226 Difference]: Without dead ends: 57 [2021-05-06 00:19:16,066 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 762.6ms TimeCoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2021-05-06 00:19:16,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-05-06 00:19:16,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 54. [2021-05-06 00:19:16,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 50 states have (on average 1.02) internal successors, (51), 50 states have internal predecessors, (51), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:19:16,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2021-05-06 00:19:16,096 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 48 [2021-05-06 00:19:16,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:19:16,097 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2021-05-06 00:19:16,097 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.5) internal successors, (45), 17 states have internal predecessors, (45), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:19:16,097 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2021-05-06 00:19:16,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-05-06 00:19:16,098 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:19:16,099 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:19:16,099 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-06 00:19:16,099 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:19:16,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:19:16,100 INFO L82 PathProgramCache]: Analyzing trace with hash 1470519801, now seen corresponding path program 1 times [2021-05-06 00:19:16,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:19:16,100 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018827157] [2021-05-06 00:19:16,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:19:16,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:19:16,639 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2021-05-06 00:19:16,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:19:16,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:19:16,653 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:19:16,653 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:19:16,653 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018827157] [2021-05-06 00:19:16,653 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018827157] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:19:16,653 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349719681] [2021-05-06 00:19:16,654 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 [2021-05-06 00:19:16,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:19:16,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 867 conjuncts, 25 conjunts are in the unsatisfiable core [2021-05-06 00:19:16,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:19:17,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,232 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:19:17,232 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349719681] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:19:17,232 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:19:17,233 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 14] total 20 [2021-05-06 00:19:17,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834283582] [2021-05-06 00:19:17,236 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-05-06 00:19:17,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:19:17,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-05-06 00:19:17,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2021-05-06 00:19:17,238 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand has 20 states, 20 states have (on average 3.5) internal successors, (70), 19 states have internal predecessors, (70), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:19:17,543 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2021-05-06 00:19:18,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:19:18,232 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2021-05-06 00:19:18,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-05-06 00:19:18,233 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.5) internal successors, (70), 19 states have internal predecessors, (70), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 53 [2021-05-06 00:19:18,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:19:18,234 INFO L225 Difference]: With dead ends: 65 [2021-05-06 00:19:18,234 INFO L226 Difference]: Without dead ends: 62 [2021-05-06 00:19:18,235 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 727.9ms TimeCoverageRelationStatistics Valid=84, Invalid=728, Unknown=0, NotChecked=0, Total=812 [2021-05-06 00:19:18,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-05-06 00:19:18,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 59. [2021-05-06 00:19:18,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 55 states have (on average 1.018181818181818) internal successors, (56), 55 states have internal predecessors, (56), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:19:18,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2021-05-06 00:19:18,242 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 53 [2021-05-06 00:19:18,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:19:18,242 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2021-05-06 00:19:18,243 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 3.5) internal successors, (70), 19 states have internal predecessors, (70), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:19:18,243 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2021-05-06 00:19:18,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-05-06 00:19:18,244 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:19:18,244 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:19:18,470 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-05-06 00:19:18,470 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:19:18,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:19:18,471 INFO L82 PathProgramCache]: Analyzing trace with hash 412615706, now seen corresponding path program 2 times [2021-05-06 00:19:18,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:19:18,471 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505536585] [2021-05-06 00:19:18,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:19:18,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:19:19,067 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2021-05-06 00:19:19,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:19:19,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:19:19,092 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:19:19,092 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:19:19,092 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505536585] [2021-05-06 00:19:19,092 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505536585] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:19:19,093 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537922049] [2021-05-06 00:19:19,093 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 [2021-05-06 00:19:19,583 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 00:19:19,584 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:19:19,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 905 conjuncts, 27 conjunts are in the unsatisfiable core [2021-05-06 00:19:19,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:19:19,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:19,786 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:19:19,786 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1537922049] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:19:19,786 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:19:19,786 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15] total 21 [2021-05-06 00:19:19,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437250934] [2021-05-06 00:19:19,788 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-05-06 00:19:19,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:19:19,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-05-06 00:19:19,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=372, Unknown=0, NotChecked=0, Total=420 [2021-05-06 00:19:19,789 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand has 21 states, 21 states have (on average 3.5714285714285716) internal successors, (75), 20 states have internal predecessors, (75), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:19:20,024 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2021-05-06 00:19:20,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:19:20,757 INFO L93 Difference]: Finished difference Result 70 states and 70 transitions. [2021-05-06 00:19:20,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-05-06 00:19:20,758 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.5714285714285716) internal successors, (75), 20 states have internal predecessors, (75), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 58 [2021-05-06 00:19:20,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:19:20,759 INFO L225 Difference]: With dead ends: 70 [2021-05-06 00:19:20,759 INFO L226 Difference]: Without dead ends: 67 [2021-05-06 00:19:20,760 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 711.9ms TimeCoverageRelationStatistics Valid=90, Invalid=840, Unknown=0, NotChecked=0, Total=930 [2021-05-06 00:19:20,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-05-06 00:19:20,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 64. [2021-05-06 00:19:20,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 60 states have (on average 1.0166666666666666) internal successors, (61), 60 states have internal predecessors, (61), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:19:20,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 64 transitions. [2021-05-06 00:19:20,766 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 64 transitions. Word has length 58 [2021-05-06 00:19:20,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:19:20,766 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 64 transitions. [2021-05-06 00:19:20,766 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 3.5714285714285716) internal successors, (75), 20 states have internal predecessors, (75), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:19:20,766 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 64 transitions. [2021-05-06 00:19:20,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-05-06 00:19:20,768 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:19:20,768 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:19:20,976 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:19:20,977 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:19:20,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:19:20,978 INFO L82 PathProgramCache]: Analyzing trace with hash -1771010407, now seen corresponding path program 3 times [2021-05-06 00:19:20,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:19:20,978 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033559836] [2021-05-06 00:19:20,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:19:21,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:19:21,516 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2021-05-06 00:19:21,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:19:21,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:19:21,526 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:19:21,526 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:19:21,526 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033559836] [2021-05-06 00:19:21,526 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033559836] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:19:21,526 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455319560] [2021-05-06 00:19:21,527 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 [2021-05-06 00:19:22,185 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-05-06 00:19:22,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:19:22,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 905 conjuncts, 40 conjunts are in the unsatisfiable core [2021-05-06 00:19:22,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:19:22,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:22,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:22,529 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 00:19:22,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 22 [2021-05-06 00:19:22,533 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-05-06 00:19:22,541 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 00:19:22,544 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-05-06 00:19:22,544 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:34, output treesize:25 [2021-05-06 00:19:22,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:22,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:22,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:22,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:22,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:22,742 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-05-06 00:19:22,743 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455319560] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:19:22,743 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:19:22,743 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 9] total 28 [2021-05-06 00:19:22,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283086007] [2021-05-06 00:19:22,744 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-05-06 00:19:22,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:19:22,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-05-06 00:19:22,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=686, Unknown=0, NotChecked=0, Total=756 [2021-05-06 00:19:22,745 INFO L87 Difference]: Start difference. First operand 64 states and 64 transitions. Second operand has 28 states, 28 states have (on average 3.9642857142857144) internal successors, (111), 27 states have internal predecessors, (111), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:19:24,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:19:24,980 INFO L93 Difference]: Finished difference Result 72 states and 73 transitions. [2021-05-06 00:19:24,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-05-06 00:19:24,981 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.9642857142857144) internal successors, (111), 27 states have internal predecessors, (111), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 63 [2021-05-06 00:19:24,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:19:24,981 INFO L225 Difference]: With dead ends: 72 [2021-05-06 00:19:24,981 INFO L226 Difference]: Without dead ends: 0 [2021-05-06 00:19:24,983 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 427 ImplicationChecksByTransitivity, 1960.3ms TimeCoverageRelationStatistics Valid=320, Invalid=2542, Unknown=0, NotChecked=0, Total=2862 [2021-05-06 00:19:24,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-06 00:19:24,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-06 00:19:24,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-06 00:19:24,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-06 00:19:24,984 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 63 [2021-05-06 00:19:24,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:19:24,984 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-06 00:19:24,984 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 3.9642857142857144) internal successors, (111), 27 states have internal predecessors, (111), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:19:24,984 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-06 00:19:24,984 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-06 00:19:25,192 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:19:25,193 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-05-06 00:19:25,401 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 33 [2021-05-06 00:19:25,513 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2021-05-06 00:19:25,652 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 48 [2021-05-06 00:19:25,654 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2021-05-06 00:19:25,654 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 4) no Hoare annotation was computed. [2021-05-06 00:19:25,654 INFO L198 CegarLoopUtils]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2021-05-06 00:19:25,654 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-05-06 00:19:25,655 INFO L194 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string67.offset| |old(#t~string67.offset)|) (= |#t~string65.base| |old(#t~string65.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= ~__tmp_1075_0~0 |old(~__tmp_1075_0~0)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#t~string57.offset| |old(#t~string57.offset)|) (= |old(#valid)| |#valid|) (= |#t~string57.base| |old(#t~string57.base)|) (= |#t~string61.base| |old(#t~string61.base)|) (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string61.offset| |old(#t~string61.offset)|) (= ~Id_MCDC_93~0 |old(~Id_MCDC_93~0)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#t~string8.base| |old(#t~string8.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string69.base| |old(#t~string69.base)|) (= ~__tmp_1075_2~0.base |old(~__tmp_1075_2~0.base)|) (= |#t~string7.base| |old(#t~string7.base)|) (= |#t~string55.base| |old(#t~string55.base)|) (= |#t~string69.offset| |old(#t~string69.offset)|) (= |#t~string63.offset| |old(#t~string63.offset)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string8.offset| |old(#t~string8.offset)|) (= |#t~string65.offset| |old(#t~string65.offset)|) (= |#t~string67.base| |old(#t~string67.base)|) (= |#t~string7.offset| |old(#t~string7.offset)|) (= |#t~string53.base| |old(#t~string53.base)|) (= |#t~string51.base| |old(#t~string51.base)|) (= |#t~string63.base| |old(#t~string63.base)|) (= ~__tmp_1075_2~0.offset |old(~__tmp_1075_2~0.offset)|) (= |#t~string59.base| |old(#t~string59.base)|) (= |#t~string51.offset| |old(#t~string51.offset)|) (= |#t~string55.offset| |old(#t~string55.offset)|) (= ~__return_main~0 |old(~__return_main~0)|) (= |#t~string53.offset| |old(#t~string53.offset)|) (= |#t~string59.offset| |old(#t~string59.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= ~__tmp_1075_1~0 |old(~__tmp_1075_1~0)|)) [2021-05-06 00:19:25,655 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-05-06 00:19:25,655 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-05-06 00:19:25,655 INFO L194 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: (and (< 0 (+ (div ~Id_MCDC_93~0 4294967296) 1)) (<= ~Id_MCDC_93~0 9)) [2021-05-06 00:19:25,655 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-05-06 00:19:25,655 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-05-06 00:19:25,655 INFO L198 CegarLoopUtils]: For program point L225(lines 225 604) no Hoare annotation was computed. [2021-05-06 00:19:25,655 INFO L198 CegarLoopUtils]: For program point L192(lines 192 622) no Hoare annotation was computed. [2021-05-06 00:19:25,655 INFO L194 CegarLoopUtils]: At program point L448(lines 408 481) the Hoare annotation is: (let ((.cse3 (mod (+ ~Id_MCDC_93~0 4294967295) 4294967296))) (let ((.cse0 (< .cse3 42)) (.cse4 (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) (+ |main_~#Id_MCDC_89__Id_MCDC_95~0.offset| 492)) 0)) (.cse5 (= |main_~#Id_MCDC_89__Id_MCDC_95~0.offset| 0))) (or (not (<= |old(~Id_MCDC_93~0)| 9)) (let ((.cse1 (mod (+ main_~Id_MCDC_89__Id_MCDC_96~0 4294967295) 4294967296))) (let ((.cse2 (* .cse1 12))) (and .cse0 (< .cse1 42) (not (= 492 .cse2)) (= ~__tmp_1075_2~0.offset .cse2) (not (= 492 (* .cse3 12))) .cse4 .cse5))) (not (< 0 (+ (div |old(~Id_MCDC_93~0)| 4294967296) 1))) (and (<= 9 main_~Id_MCDC_89__Id_MCDC_96~0) (<= main_~Id_MCDC_89__Id_MCDC_96~0 9) .cse0 (< 0 (+ (div ~Id_MCDC_93~0 4294967296) 1)) (<= ~Id_MCDC_93~0 9) .cse4 .cse5)))) [2021-05-06 00:19:25,656 INFO L198 CegarLoopUtils]: For program point mainEXIT(lines 136 636) no Hoare annotation was computed. [2021-05-06 00:19:25,656 INFO L198 CegarLoopUtils]: For program point L184(lines 184 628) no Hoare annotation was computed. [2021-05-06 00:19:25,656 INFO L198 CegarLoopUtils]: For program point L440(lines 440 453) no Hoare annotation was computed. [2021-05-06 00:19:25,656 INFO L198 CegarLoopUtils]: For program point L407(lines 407 485) no Hoare annotation was computed. [2021-05-06 00:19:25,656 INFO L198 CegarLoopUtils]: For program point L374(lines 374 503) no Hoare annotation was computed. [2021-05-06 00:19:25,656 INFO L198 CegarLoopUtils]: For program point L465(lines 465 473) no Hoare annotation was computed. [2021-05-06 00:19:25,656 INFO L198 CegarLoopUtils]: For program point L366(lines 366 509) no Hoare annotation was computed. [2021-05-06 00:19:25,656 INFO L198 CegarLoopUtils]: For program point L234(lines 234 599) no Hoare annotation was computed. [2021-05-06 00:19:25,656 INFO L198 CegarLoopUtils]: For program point L251(lines 251 587) no Hoare annotation was computed. [2021-05-06 00:19:25,656 INFO L198 CegarLoopUtils]: For program point L218(lines 218 605) no Hoare annotation was computed. [2021-05-06 00:19:25,656 INFO L198 CegarLoopUtils]: For program point L210(lines 210 611) no Hoare annotation was computed. [2021-05-06 00:19:25,656 INFO L198 CegarLoopUtils]: For program point L433(lines 433 454) no Hoare annotation was computed. [2021-05-06 00:19:25,656 INFO L198 CegarLoopUtils]: For program point L400(lines 400 486) no Hoare annotation was computed. [2021-05-06 00:19:25,657 INFO L198 CegarLoopUtils]: For program point L425(lines 425 475) no Hoare annotation was computed. [2021-05-06 00:19:25,657 INFO L198 CegarLoopUtils]: For program point L392(lines 392 492) no Hoare annotation was computed. [2021-05-06 00:19:25,657 INFO L198 CegarLoopUtils]: For program point L260(lines 260 582) no Hoare annotation was computed. [2021-05-06 00:19:25,657 INFO L198 CegarLoopUtils]: For program point L277(lines 277 570) no Hoare annotation was computed. [2021-05-06 00:19:25,657 INFO L198 CegarLoopUtils]: For program point L244(lines 244 588) no Hoare annotation was computed. [2021-05-06 00:19:25,657 INFO L198 CegarLoopUtils]: For program point L467(line 467) no Hoare annotation was computed. [2021-05-06 00:19:25,657 INFO L198 CegarLoopUtils]: For program point mainFINAL(lines 136 636) no Hoare annotation was computed. [2021-05-06 00:19:25,657 INFO L198 CegarLoopUtils]: For program point L236(lines 236 594) no Hoare annotation was computed. [2021-05-06 00:19:25,657 INFO L198 CegarLoopUtils]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 467) no Hoare annotation was computed. [2021-05-06 00:19:25,657 INFO L198 CegarLoopUtils]: For program point L286(lines 286 565) no Hoare annotation was computed. [2021-05-06 00:19:25,657 INFO L194 CegarLoopUtils]: At program point mainENTRY(lines 136 636) the Hoare annotation is: (or (and (= ~__tmp_1075_2~0.offset |old(~__tmp_1075_2~0.offset)|) (= ~Id_MCDC_93~0 |old(~Id_MCDC_93~0)|) (= ~__tmp_1075_0~0 |old(~__tmp_1075_0~0)|) (= |old(#length)| |#length|) (= |old(~__tmp_1075_2~0.base)| ~__tmp_1075_2~0.base) (= |old(#valid)| |#valid|) (= ~__tmp_1075_1~0 |old(~__tmp_1075_1~0)|)) (not (<= |old(~Id_MCDC_93~0)| 9)) (not (< 0 (+ (div |old(~Id_MCDC_93~0)| 4294967296) 1)))) [2021-05-06 00:19:25,658 INFO L198 CegarLoopUtils]: For program point L303(lines 303 553) no Hoare annotation was computed. [2021-05-06 00:19:25,658 INFO L198 CegarLoopUtils]: For program point L270(lines 270 571) no Hoare annotation was computed. [2021-05-06 00:19:25,658 INFO L198 CegarLoopUtils]: For program point L262(lines 262 577) no Hoare annotation was computed. [2021-05-06 00:19:25,658 INFO L198 CegarLoopUtils]: For program point L312(lines 312 548) no Hoare annotation was computed. [2021-05-06 00:19:25,658 INFO L198 CegarLoopUtils]: For program point L329(lines 329 536) no Hoare annotation was computed. [2021-05-06 00:19:25,658 INFO L198 CegarLoopUtils]: For program point L296(lines 296 554) no Hoare annotation was computed. [2021-05-06 00:19:25,658 INFO L198 CegarLoopUtils]: For program point L164(lines 164 635) no Hoare annotation was computed. [2021-05-06 00:19:25,658 INFO L198 CegarLoopUtils]: For program point L288(lines 288 560) no Hoare annotation was computed. [2021-05-06 00:19:25,658 INFO L198 CegarLoopUtils]: For program point L338(lines 338 531) no Hoare annotation was computed. [2021-05-06 00:19:25,658 INFO L198 CegarLoopUtils]: For program point L355(lines 355 519) no Hoare annotation was computed. [2021-05-06 00:19:25,658 INFO L198 CegarLoopUtils]: For program point L322(lines 322 537) no Hoare annotation was computed. [2021-05-06 00:19:25,658 INFO L198 CegarLoopUtils]: For program point L314(lines 314 543) no Hoare annotation was computed. [2021-05-06 00:19:25,658 INFO L198 CegarLoopUtils]: For program point L182(lines 182 633) no Hoare annotation was computed. [2021-05-06 00:19:25,659 INFO L198 CegarLoopUtils]: For program point L364(lines 364 514) no Hoare annotation was computed. [2021-05-06 00:19:25,659 INFO L198 CegarLoopUtils]: For program point L199(lines 199 621) no Hoare annotation was computed. [2021-05-06 00:19:25,659 INFO L198 CegarLoopUtils]: For program point L381(lines 381 502) no Hoare annotation was computed. [2021-05-06 00:19:25,659 INFO L198 CegarLoopUtils]: For program point L348(lines 348 520) no Hoare annotation was computed. [2021-05-06 00:19:25,659 INFO L198 CegarLoopUtils]: For program point L340(lines 340 526) no Hoare annotation was computed. [2021-05-06 00:19:25,659 INFO L198 CegarLoopUtils]: For program point L208(lines 208 616) no Hoare annotation was computed. [2021-05-06 00:19:25,659 INFO L198 CegarLoopUtils]: For program point L423(lines 423 480) no Hoare annotation was computed. [2021-05-06 00:19:25,659 INFO L198 CegarLoopUtils]: For program point L390(lines 390 497) no Hoare annotation was computed. [2021-05-06 00:19:25,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 12:19:25 BoogieIcfgContainer [2021-05-06 00:19:25,683 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-06 00:19:25,684 INFO L168 Benchmark]: Toolchain (without parser) took 13476.08 ms. Allocated memory was 180.4 MB in the beginning and 274.7 MB in the end (delta: 94.4 MB). Free memory was 143.7 MB in the beginning and 195.0 MB in the end (delta: -51.3 MB). Peak memory consumption was 149.5 MB. Max. memory is 8.0 GB. [2021-05-06 00:19:25,684 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 180.4 MB. Free memory is still 160.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 00:19:25,686 INFO L168 Benchmark]: CACSL2BoogieTranslator took 405.24 ms. Allocated memory is still 180.4 MB. Free memory was 143.4 MB in the beginning and 155.7 MB in the end (delta: -12.3 MB). Peak memory consumption was 16.2 MB. Max. memory is 8.0 GB. [2021-05-06 00:19:25,686 INFO L168 Benchmark]: Boogie Preprocessor took 89.04 ms. Allocated memory is still 180.4 MB. Free memory was 155.7 MB in the beginning and 151.0 MB in the end (delta: 4.7 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. [2021-05-06 00:19:25,686 INFO L168 Benchmark]: RCFGBuilder took 923.70 ms. Allocated memory is still 180.4 MB. Free memory was 151.0 MB in the beginning and 150.9 MB in the end (delta: 156.8 kB). Peak memory consumption was 96.1 MB. Max. memory is 8.0 GB. [2021-05-06 00:19:25,686 INFO L168 Benchmark]: TraceAbstraction took 12052.44 ms. Allocated memory was 180.4 MB in the beginning and 274.7 MB in the end (delta: 94.4 MB). Free memory was 150.3 MB in the beginning and 195.0 MB in the end (delta: -44.6 MB). Peak memory consumption was 154.6 MB. Max. memory is 8.0 GB. [2021-05-06 00:19:25,689 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 180.4 MB. Free memory is still 160.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 405.24 ms. Allocated memory is still 180.4 MB. Free memory was 143.4 MB in the beginning and 155.7 MB in the end (delta: -12.3 MB). Peak memory consumption was 16.2 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 89.04 ms. Allocated memory is still 180.4 MB. Free memory was 155.7 MB in the beginning and 151.0 MB in the end (delta: 4.7 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 923.70 ms. Allocated memory is still 180.4 MB. Free memory was 151.0 MB in the beginning and 150.9 MB in the end (delta: 156.8 kB). Peak memory consumption was 96.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 12052.44 ms. Allocated memory was 180.4 MB in the beginning and 274.7 MB in the end (delta: 94.4 MB). Free memory was 150.3 MB in the beginning and 195.0 MB in the end (delta: -44.6 MB). Peak memory consumption was 154.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 467]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 58 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 11507.9ms, OverallIterations: 4, TraceHistogramMax: 4, EmptinessCheckTime: 13.4ms, AutomataDifference: 5502.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 461.1ms, InitialAbstractionConstructionTime: 15.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 122 SDtfs, 340 SDslu, 1634 SDs, 0 SdLazy, 3058 SolverSat, 135 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2527.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 305 GetRequests, 171 SyntacticMatches, 3 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 621 ImplicationChecksByTransitivity, 4162.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=64occurred in iteration=3, InterpolantAutomatonStates: 82, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 32.6ms AutomataMinimizationTime, 4 MinimizatonAttempts, 9 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 10 NumberOfFragments, 273 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 58.3ms HoareSimplificationTime, 5 FomulaSimplificationsInter, 360 FormulaSimplificationTreeSizeReductionInter, 389.3ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 199.2ms SsaConstructionTime, 1425.0ms SatisfiabilityAnalysisTime, 3332.1ms InterpolantComputationTime, 396 NumberOfCodeBlocks, 391 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 389 ConstructedInterpolants, 0 QuantifiedInterpolants, 3330 SizeOfPredicates, 23 NumberOfNonLiveVariables, 2677 ConjunctsInSsa, 92 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 13/76 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 408]: Loop Invariant Derived loop invariant: ((!(\old(Id_MCDC_93) <= 9) || (((((((Id_MCDC_93 + 4294967295) % 4294967296 < 42 && (Id_MCDC_89__Id_MCDC_96 + 4294967295) % 4294967296 < 42) && !(492 == (Id_MCDC_89__Id_MCDC_96 + 4294967295) % 4294967296 * 12)) && __tmp_1075_2 == (Id_MCDC_89__Id_MCDC_96 + 4294967295) % 4294967296 * 12) && !(492 == (Id_MCDC_93 + 4294967295) % 4294967296 * 12)) && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492] == 0) && Id_MCDC_89__Id_MCDC_95 == 0)) || !(0 < \old(Id_MCDC_93) / 4294967296 + 1)) || ((((((9 <= Id_MCDC_89__Id_MCDC_96 && Id_MCDC_89__Id_MCDC_96 <= 9) && (Id_MCDC_93 + 4294967295) % 4294967296 < 42) && 0 < Id_MCDC_93 / 4294967296 + 1) && Id_MCDC_93 <= 9) && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492] == 0) && Id_MCDC_89__Id_MCDC_95 == 0) RESULT: Ultimate proved your program to be correct! Received shutdown request...