/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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-industry-pattern/aiob_4.c.v+lh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 13:44:30,087 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 13:44:30,091 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 13:44:30,135 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 13:44:30,135 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 13:44:30,144 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 13:44:30,147 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 13:44:30,151 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 13:44:30,154 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 13:44:30,157 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 13:44:30,158 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 13:44:30,160 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 13:44:30,160 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 13:44:30,163 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 13:44:30,165 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 13:44:30,167 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 13:44:30,169 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 13:44:30,171 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 13:44:30,172 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 13:44:30,182 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 13:44:30,184 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 13:44:30,185 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 13:44:30,187 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 13:44:30,187 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 13:44:30,200 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 13:44:30,200 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 13:44:30,200 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 13:44:30,201 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 13:44:30,203 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 13:44:30,205 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 13:44:30,205 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 13:44:30,206 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 13:44:30,207 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 13:44:30,208 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 13:44:30,209 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 13:44:30,210 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 13:44:30,210 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 13:44:30,211 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 13:44:30,211 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 13:44:30,212 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 13:44:30,213 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 13:44:30,214 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-04 13:44:30,266 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 13:44:30,266 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 13:44:30,268 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-04 13:44:30,268 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-04 13:44:30,269 INFO L138 SettingsManager]: * Use SBE=true [2020-09-04 13:44:30,269 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 13:44:30,269 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 13:44:30,269 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 13:44:30,270 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 13:44:30,270 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 13:44:30,271 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 13:44:30,271 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 13:44:30,271 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 13:44:30,272 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 13:44:30,272 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 13:44:30,272 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 13:44:30,272 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 13:44:30,273 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 13:44:30,273 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-04 13:44:30,273 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 13:44:30,273 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 13:44:30,273 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 13:44:30,274 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 13:44:30,274 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-04 13:44:30,274 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-04 13:44:30,274 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-04 13:44:30,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-04 13:44:30,275 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 13:44:30,275 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-04 13:44:30,275 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-04 13:44:30,707 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 13:44:30,733 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 13:44:30,738 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 13:44:30,740 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 13:44:30,741 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 13:44:30,742 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lh-reducer.c [2020-09-04 13:44:30,840 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ce5583d8f/a36773fc08bb488ea8d33d3ab6d38f53/FLAGa3ec361c6 [2020-09-04 13:44:31,416 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 13:44:31,417 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lh-reducer.c [2020-09-04 13:44:31,428 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ce5583d8f/a36773fc08bb488ea8d33d3ab6d38f53/FLAGa3ec361c6 [2020-09-04 13:44:31,720 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ce5583d8f/a36773fc08bb488ea8d33d3ab6d38f53 [2020-09-04 13:44:31,735 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 13:44:31,737 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 13:44:31,738 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 13:44:31,738 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 13:44:31,745 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 13:44:31,747 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:44:31" (1/1) ... [2020-09-04 13:44:31,751 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d2c922 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:44:31, skipping insertion in model container [2020-09-04 13:44:31,752 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:44:31" (1/1) ... [2020-09-04 13:44:31,761 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 13:44:31,801 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 13:44:32,134 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:44:32,148 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 13:44:32,358 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:44:32,386 INFO L208 MainTranslator]: Completed translation [2020-09-04 13:44:32,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:44:32 WrapperNode [2020-09-04 13:44:32,387 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 13:44:32,387 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 13:44:32,388 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 13:44:32,388 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 13:44:32,402 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:44:32" (1/1) ... [2020-09-04 13:44:32,402 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:44:32" (1/1) ... [2020-09-04 13:44:32,430 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:44:32" (1/1) ... [2020-09-04 13:44:32,436 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:44:32" (1/1) ... [2020-09-04 13:44:32,486 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:44:32" (1/1) ... [2020-09-04 13:44:32,491 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:44:32" (1/1) ... [2020-09-04 13:44:32,494 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:44:32" (1/1) ... [2020-09-04 13:44:32,500 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 13:44:32,500 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 13:44:32,500 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 13:44:32,501 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 13:44:32,504 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:44:32" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 13:44:32,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 13:44:32,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 13:44:32,574 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 13:44:32,575 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 13:44:32,575 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_89 [2020-09-04 13:44:32,575 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-09-04 13:44:32,575 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 13:44:32,575 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 13:44:32,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 13:44:32,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 13:44:32,576 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-04 13:44:32,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-04 13:44:32,576 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 13:44:32,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 13:44:32,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 13:44:32,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-04 13:44:32,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 13:44:35,316 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 13:44:35,316 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-04 13:44:35,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:44:35 BoogieIcfgContainer [2020-09-04 13:44:35,321 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 13:44:35,323 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 13:44:35,323 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 13:44:35,327 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 13:44:35,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 01:44:31" (1/3) ... [2020-09-04 13:44:35,328 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17ba4f32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:44:35, skipping insertion in model container [2020-09-04 13:44:35,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:44:32" (2/3) ... [2020-09-04 13:44:35,329 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17ba4f32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:44:35, skipping insertion in model container [2020-09-04 13:44:35,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:44:35" (3/3) ... [2020-09-04 13:44:35,331 INFO L109 eAbstractionObserver]: Analyzing ICFG aiob_4.c.v+lh-reducer.c [2020-09-04 13:44:35,343 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-04 13:44:35,353 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 13:44:35,375 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 13:44:35,406 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 13:44:35,406 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 13:44:35,406 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-04 13:44:35,406 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 13:44:35,407 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 13:44:35,407 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 13:44:35,407 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 13:44:35,407 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 13:44:35,430 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-09-04 13:44:35,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-04 13:44:35,437 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:44:35,439 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:44:35,439 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:44:35,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:44:35,447 INFO L82 PathProgramCache]: Analyzing trace with hash 1960518123, now seen corresponding path program 1 times [2020-09-04 13:44:35,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:44:35,475 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728126762] [2020-09-04 13:44:35,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:44:35,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:35,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:44:35,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:35,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:44:35,953 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728126762] [2020-09-04 13:44:35,954 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:44:35,954 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 13:44:35,955 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310837469] [2020-09-04 13:44:35,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 13:44:35,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:44:35,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 13:44:35,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-04 13:44:35,981 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 5 states. [2020-09-04 13:44:38,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:44:38,200 INFO L93 Difference]: Finished difference Result 38 states and 46 transitions. [2020-09-04 13:44:38,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 13:44:38,203 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-09-04 13:44:38,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:44:38,218 INFO L225 Difference]: With dead ends: 38 [2020-09-04 13:44:38,218 INFO L226 Difference]: Without dead ends: 21 [2020-09-04 13:44:38,223 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-04 13:44:38,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-09-04 13:44:38,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 18. [2020-09-04 13:44:38,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-09-04 13:44:38,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2020-09-04 13:44:38,274 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 12 [2020-09-04 13:44:38,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:44:38,274 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2020-09-04 13:44:38,274 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 13:44:38,274 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-09-04 13:44:38,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-04 13:44:38,275 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:44:38,276 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:44:38,276 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 13:44:38,276 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:44:38,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:44:38,277 INFO L82 PathProgramCache]: Analyzing trace with hash 1182240945, now seen corresponding path program 1 times [2020-09-04 13:44:38,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:44:38,277 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474182719] [2020-09-04 13:44:38,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:44:38,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:38,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:44:38,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:38,589 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:44:38,589 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474182719] [2020-09-04 13:44:38,590 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12355898] [2020-09-04 13:44:38,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 13:44:38,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:38,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-04 13:44:38,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:44:38,857 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:44:38,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-04 13:44:38,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2020-09-04 13:44:38,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675131326] [2020-09-04 13:44:38,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-04 13:44:38,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:44:38,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-04 13:44:38,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-04 13:44:38,862 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 7 states. [2020-09-04 13:44:43,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:44:43,146 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2020-09-04 13:44:43,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-04 13:44:43,147 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2020-09-04 13:44:43,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:44:43,149 INFO L225 Difference]: With dead ends: 29 [2020-09-04 13:44:43,149 INFO L226 Difference]: Without dead ends: 26 [2020-09-04 13:44:43,150 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-04 13:44:43,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-09-04 13:44:43,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2020-09-04 13:44:43,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-09-04 13:44:43,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2020-09-04 13:44:43,164 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 17 [2020-09-04 13:44:43,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:44:43,165 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2020-09-04 13:44:43,165 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-04 13:44:43,165 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2020-09-04 13:44:43,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-04 13:44:43,166 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:44:43,167 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:44:43,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-09-04 13:44:43,381 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:44:43,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:44:43,381 INFO L82 PathProgramCache]: Analyzing trace with hash 491744683, now seen corresponding path program 2 times [2020-09-04 13:44:43,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:44:43,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150911653] [2020-09-04 13:44:43,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:44:43,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:43,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:44:43,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:43,618 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:44:43,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150911653] [2020-09-04 13:44:43,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191543587] [2020-09-04 13:44:43,628 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 13:44:46,321 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-04 13:44:46,322 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-04 13:44:46,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-04 13:44:46,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:44:46,382 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:44:46,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-04 13:44:46,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2020-09-04 13:44:46,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813943169] [2020-09-04 13:44:46,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-04 13:44:46,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:44:46,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-04 13:44:46,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-04 13:44:46,385 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 8 states. [2020-09-04 13:44:52,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:44:52,711 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2020-09-04 13:44:52,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-04 13:44:52,712 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2020-09-04 13:44:52,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:44:52,713 INFO L225 Difference]: With dead ends: 34 [2020-09-04 13:44:52,713 INFO L226 Difference]: Without dead ends: 31 [2020-09-04 13:44:52,714 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-09-04 13:44:52,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-09-04 13:44:52,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2020-09-04 13:44:52,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-04 13:44:52,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2020-09-04 13:44:52,721 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 22 [2020-09-04 13:44:52,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:44:52,721 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2020-09-04 13:44:52,721 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-04 13:44:52,722 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2020-09-04 13:44:52,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-04 13:44:52,723 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:44:52,723 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:44:52,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:44:52,937 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:44:52,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:44:52,937 INFO L82 PathProgramCache]: Analyzing trace with hash 161258737, now seen corresponding path program 3 times [2020-09-04 13:44:52,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:44:52,938 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567543949] [2020-09-04 13:44:52,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:44:52,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:53,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:44:53,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:53,264 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:44:53,264 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567543949] [2020-09-04 13:44:53,265 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770594983] [2020-09-04 13:44:53,265 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 13:44:59,291 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-09-04 13:44:59,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-04 13:44:59,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 17 conjunts are in the unsatisfiable core [2020-09-04 13:44:59,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:44:59,406 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-09-04 13:44:59,460 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-09-04 13:44:59,461 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-09-04 13:44:59,484 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-09-04 13:44:59,485 INFO L384 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 23 treesize of output 23 [2020-09-04 13:44:59,486 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2020-09-04 13:44:59,508 INFO L625 ElimStorePlain]: treesize reduction 5, result has 81.5 percent of original size [2020-09-04 13:44:59,510 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-09-04 13:44:59,511 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:69, output treesize:22 [2020-09-04 13:44:59,562 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-09-04 13:44:59,701 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-04 13:44:59,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-04 13:44:59,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2020-09-04 13:44:59,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138814442] [2020-09-04 13:44:59,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-04 13:44:59,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:44:59,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-04 13:44:59,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-09-04 13:44:59,707 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 14 states. [2020-09-04 13:45:06,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:45:06,618 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2020-09-04 13:45:06,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-04 13:45:06,619 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 27 [2020-09-04 13:45:06,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:45:06,620 INFO L225 Difference]: With dead ends: 39 [2020-09-04 13:45:06,620 INFO L226 Difference]: Without dead ends: 0 [2020-09-04 13:45:06,622 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=157, Invalid=545, Unknown=0, NotChecked=0, Total=702 [2020-09-04 13:45:06,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-04 13:45:06,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-04 13:45:06,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-04 13:45:06,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-04 13:45:06,623 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2020-09-04 13:45:06,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:45:06,623 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-04 13:45:06,624 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-04 13:45:06,624 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-04 13:45:06,624 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-04 13:45:06,832 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:45:06,837 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-04 13:45:07,177 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 44 [2020-09-04 13:45:07,180 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-04 13:45:07,181 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~Id_MCDC_93~0 |old(~Id_MCDC_93~0)|) (= |#t~string0.offset| |old(#t~string0.offset)|) (= |#t~string44.offset| |old(#t~string44.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= ~__return_main~0 |old(~__return_main~0)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string44.base| |old(#t~string44.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2020-09-04 13:45:07,181 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-04 13:45:07,181 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-04 13:45:07,181 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (= ~Id_MCDC_93~0 0) [2020-09-04 13:45:07,182 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-04 13:45:07,182 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-04 13:45:07,182 INFO L268 CegarLoopResult]: For program point L159(lines 159 234) no Hoare annotation was computed. [2020-09-04 13:45:07,182 INFO L268 CegarLoopResult]: For program point L188(lines 188 206) no Hoare annotation was computed. [2020-09-04 13:45:07,182 INFO L268 CegarLoopResult]: For program point L219(line 219) no Hoare annotation was computed. [2020-09-04 13:45:07,182 INFO L268 CegarLoopResult]: For program point L217(lines 217 225) no Hoare annotation was computed. [2020-09-04 13:45:07,182 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 131 235) no Hoare annotation was computed. [2020-09-04 13:45:07,183 INFO L268 CegarLoopResult]: For program point L180(lines 180 227) no Hoare annotation was computed. [2020-09-04 13:45:07,183 INFO L268 CegarLoopResult]: For program point L178(lines 178 232) no Hoare annotation was computed. [2020-09-04 13:45:07,183 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 131 235) no Hoare annotation was computed. [2020-09-04 13:45:07,183 INFO L268 CegarLoopResult]: For program point L195(lines 195 205) no Hoare annotation was computed. [2020-09-04 13:45:07,183 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 219) no Hoare annotation was computed. [2020-09-04 13:45:07,184 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 131 235) the Hoare annotation is: (or (and (= ~Id_MCDC_93~0 |old(~Id_MCDC_93~0)|) (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) (not (= |old(~Id_MCDC_93~0)| 0))) [2020-09-04 13:45:07,184 INFO L264 CegarLoopResult]: At program point L200(lines 165 233) the Hoare annotation is: (let ((.cse0 (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) (+ |main_~#Id_MCDC_89__Id_MCDC_95~0.offset| 492)) 0))) (or (and (<= main_~Id_MCDC_89__Id_MCDC_96~0 1) (< 0 (+ (div ~Id_MCDC_93~0 4294967296) 1)) (<= ~Id_MCDC_93~0 2) (<= 1 main_~Id_MCDC_89__Id_MCDC_96~0) .cse0) (not (= |old(~Id_MCDC_93~0)| 0)) (and (= ~Id_MCDC_93~0 0) (= main_~Id_MCDC_89__Id_MCDC_96~0 0) .cse0) (let ((.cse2 (mod (+ main_~Id_MCDC_89__Id_MCDC_96~0 4294967295) 4294967296)) (.cse1 (mod (+ ~Id_MCDC_93~0 4294967295) 4294967296))) (and (< .cse1 42) (< .cse2 42) (not (= 492 (* .cse2 12))) (not (= 492 (* .cse1 12))) .cse0)))) [2020-09-04 13:45:07,198 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-04 13:45:07,199 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-04 13:45:07,199 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-04 13:45:07,207 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-04 13:45:07,207 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-04 13:45:07,207 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-04 13:45:07,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 01:45:07 BoogieIcfgContainer [2020-09-04 13:45:07,211 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 13:45:07,213 INFO L168 Benchmark]: Toolchain (without parser) took 35476.50 ms. Allocated memory was 141.6 MB in the beginning and 261.1 MB in the end (delta: 119.5 MB). Free memory was 103.5 MB in the beginning and 156.9 MB in the end (delta: -53.4 MB). Peak memory consumption was 66.2 MB. Max. memory is 7.1 GB. [2020-09-04 13:45:07,214 INFO L168 Benchmark]: CDTParser took 0.57 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-09-04 13:45:07,215 INFO L168 Benchmark]: CACSL2BoogieTranslator took 648.83 ms. Allocated memory was 141.6 MB in the beginning and 206.6 MB in the end (delta: 65.0 MB). Free memory was 103.3 MB in the beginning and 179.8 MB in the end (delta: -76.5 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. [2020-09-04 13:45:07,216 INFO L168 Benchmark]: Boogie Preprocessor took 112.40 ms. Allocated memory is still 206.6 MB. Free memory was 179.8 MB in the beginning and 175.9 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-09-04 13:45:07,217 INFO L168 Benchmark]: RCFGBuilder took 2821.29 ms. Allocated memory is still 206.6 MB. Free memory was 175.9 MB in the beginning and 102.9 MB in the end (delta: 73.0 MB). Peak memory consumption was 73.0 MB. Max. memory is 7.1 GB. [2020-09-04 13:45:07,218 INFO L168 Benchmark]: TraceAbstraction took 31888.17 ms. Allocated memory was 206.6 MB in the beginning and 261.1 MB in the end (delta: 54.5 MB). Free memory was 102.3 MB in the beginning and 156.9 MB in the end (delta: -54.6 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 13:45:07,222 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.57 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 648.83 ms. Allocated memory was 141.6 MB in the beginning and 206.6 MB in the end (delta: 65.0 MB). Free memory was 103.3 MB in the beginning and 179.8 MB in the end (delta: -76.5 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 112.40 ms. Allocated memory is still 206.6 MB. Free memory was 179.8 MB in the beginning and 175.9 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 2821.29 ms. Allocated memory is still 206.6 MB. Free memory was 175.9 MB in the beginning and 102.9 MB in the end (delta: 73.0 MB). Peak memory consumption was 73.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 31888.17 ms. Allocated memory was 206.6 MB in the beginning and 261.1 MB in the end (delta: 54.5 MB). Free memory was 102.3 MB in the beginning and 156.9 MB in the end (delta: -54.6 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 219]: 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: 165]: Loop Invariant [2020-09-04 13:45:07,242 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-04 13:45:07,242 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-04 13:45:07,243 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-04 13:45:07,243 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-04 13:45:07,244 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-04 13:45:07,244 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: ((((((Id_MCDC_89__Id_MCDC_96 <= 1 && 0 < Id_MCDC_93 / 4294967296 + 1) && Id_MCDC_93 <= 2) && 1 <= Id_MCDC_89__Id_MCDC_96) && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492] == 0) || !(\old(Id_MCDC_93) == 0)) || ((Id_MCDC_93 == 0 && Id_MCDC_89__Id_MCDC_96 == 0) && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492] == 0)) || (((((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)) && !(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) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 31.4s, OverallIterations: 4, TraceHistogramMax: 4, AutomataDifference: 19.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 50 SDtfs, 112 SDslu, 132 SDs, 0 SdLazy, 290 SolverSat, 60 SolverUnsat, 9 SolverUnknown, 0 SolverNotchecked, 18.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 117 GetRequests, 65 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 9 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 10 NumberOfFragments, 147 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 250 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 8.9s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 144 NumberOfCodeBlocks, 139 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 137 ConstructedInterpolants, 0 QuantifiedInterpolants, 16843 SizeOfPredicates, 12 NumberOfNonLiveVariables, 1319 ConjunctsInSsa, 33 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...