/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 18:44:42,014 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 18:44:42,018 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 18:44:42,053 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 18:44:42,053 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 18:44:42,055 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 18:44:42,057 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 18:44:42,059 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 18:44:42,061 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 18:44:42,062 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 18:44:42,064 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 18:44:42,065 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 18:44:42,066 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 18:44:42,067 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 18:44:42,068 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 18:44:42,070 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 18:44:42,071 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 18:44:42,072 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 18:44:42,074 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 18:44:42,077 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 18:44:42,079 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 18:44:42,080 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 18:44:42,082 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 18:44:42,083 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 18:44:42,102 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 18:44:42,112 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 18:44:42,113 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 18:44:42,114 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 18:44:42,116 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-23 18:44:42,156 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 18:44:42,157 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 18:44:42,158 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-23 18:44:42,159 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-23 18:44:42,159 INFO L138 SettingsManager]: * Use SBE=true [2020-10-23 18:44:42,160 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 18:44:42,160 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 18:44:42,160 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 18:44:42,160 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 18:44:42,160 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 18:44:42,161 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 18:44:42,162 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 18:44:42,162 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 18:44:42,162 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 18:44:42,162 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 18:44:42,163 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 18:44:42,163 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 18:44:42,163 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 18:44:42,163 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-23 18:44:42,164 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 18:44:42,164 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 18:44:42,164 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 18:44:42,164 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 18:44:42,165 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-23 18:44:42,165 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-23 18:44:42,165 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-23 18:44:42,165 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-23 18:44:42,165 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 18:44:42,166 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-23 18:44:42,166 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 18:44:42,608 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 18:44:42,633 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 18:44:42,637 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 18:44:42,638 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 18:44:42,638 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 18:44:42,639 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lh-reducer.c [2020-10-23 18:44:42,738 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8bc8845d0/7aa0c34a6d2549af8060f68cbdc74c2f/FLAGc09b913bf [2020-10-23 18:44:43,448 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 18:44:43,449 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lh-reducer.c [2020-10-23 18:44:43,462 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8bc8845d0/7aa0c34a6d2549af8060f68cbdc74c2f/FLAGc09b913bf [2020-10-23 18:44:43,478 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8bc8845d0/7aa0c34a6d2549af8060f68cbdc74c2f [2020-10-23 18:44:43,481 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 18:44:43,487 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 18:44:43,489 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 18:44:43,489 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 18:44:43,493 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 18:44:43,494 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:44:43" (1/1) ... [2020-10-23 18:44:43,498 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24faec1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:43, skipping insertion in model container [2020-10-23 18:44:43,498 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:44:43" (1/1) ... [2020-10-23 18:44:43,507 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 18:44:43,535 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 18:44:43,818 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:44:43,828 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 18:44:43,937 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:44:43,965 INFO L208 MainTranslator]: Completed translation [2020-10-23 18:44:43,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:43 WrapperNode [2020-10-23 18:44:43,966 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 18:44:43,967 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 18:44:43,968 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 18:44:43,968 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 18:44:43,981 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:43" (1/1) ... [2020-10-23 18:44:43,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:43" (1/1) ... [2020-10-23 18:44:44,000 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:43" (1/1) ... [2020-10-23 18:44:44,000 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:43" (1/1) ... [2020-10-23 18:44:44,034 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:43" (1/1) ... [2020-10-23 18:44:44,038 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:43" (1/1) ... [2020-10-23 18:44:44,049 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:43" (1/1) ... [2020-10-23 18:44:44,061 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 18:44:44,066 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 18:44:44,066 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 18:44:44,066 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 18:44:44,067 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:43" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 18:44:44,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 18:44:44,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 18:44:44,157 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 18:44:44,157 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 18:44:44,157 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 18:44:44,157 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 18:44:44,158 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 18:44:44,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 18:44:44,158 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_89 [2020-10-23 18:44:44,158 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-10-23 18:44:44,158 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 18:44:44,158 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 18:44:44,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 18:44:44,159 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-23 18:44:44,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 18:44:44,159 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 18:44:44,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 18:44:44,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 18:44:44,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 18:44:44,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-23 18:44:47,257 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 18:44:47,257 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-23 18:44:47,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:44:47 BoogieIcfgContainer [2020-10-23 18:44:47,259 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 18:44:47,261 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 18:44:47,261 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 18:44:47,265 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 18:44:47,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:44:43" (1/3) ... [2020-10-23 18:44:47,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16e04eb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:44:47, skipping insertion in model container [2020-10-23 18:44:47,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:43" (2/3) ... [2020-10-23 18:44:47,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16e04eb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:44:47, skipping insertion in model container [2020-10-23 18:44:47,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:44:47" (3/3) ... [2020-10-23 18:44:47,268 INFO L111 eAbstractionObserver]: Analyzing ICFG aiob_4.c.v+lh-reducer.c [2020-10-23 18:44:47,281 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-23 18:44:47,287 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 18:44:47,301 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 18:44:47,330 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 18:44:47,330 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 18:44:47,330 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-23 18:44:47,331 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 18:44:47,331 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 18:44:47,331 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 18:44:47,331 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 18:44:47,331 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 18:44:47,350 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-10-23 18:44:47,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-23 18:44:47,356 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:44:47,357 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:44:47,357 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:44:47,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:44:47,364 INFO L82 PathProgramCache]: Analyzing trace with hash 725686189, now seen corresponding path program 1 times [2020-10-23 18:44:47,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:44:47,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842168533] [2020-10-23 18:44:47,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:44:47,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:47,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:44:47,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:47,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:44:47,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842168533] [2020-10-23 18:44:47,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:44:47,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 18:44:47,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319537038] [2020-10-23 18:44:47,916 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 18:44:47,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:44:47,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 18:44:47,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-23 18:44:47,938 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 5 states. [2020-10-23 18:44:50,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:44:50,233 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2020-10-23 18:44:50,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-23 18:44:50,236 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-23 18:44:50,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:44:50,252 INFO L225 Difference]: With dead ends: 43 [2020-10-23 18:44:50,252 INFO L226 Difference]: Without dead ends: 22 [2020-10-23 18:44:50,256 INFO L677 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 [2020-10-23 18:44:50,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-10-23 18:44:50,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 19. [2020-10-23 18:44:50,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-23 18:44:50,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-10-23 18:44:50,301 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 13 [2020-10-23 18:44:50,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:44:50,301 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-10-23 18:44:50,301 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 18:44:50,302 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-10-23 18:44:50,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-23 18:44:50,302 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:44:50,303 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:44:50,303 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 18:44:50,303 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:44:50,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:44:50,304 INFO L82 PathProgramCache]: Analyzing trace with hash 926635520, now seen corresponding path program 1 times [2020-10-23 18:44:50,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:44:50,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183726304] [2020-10-23 18:44:50,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:44:50,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:50,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:44:50,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:50,533 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:44:50,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183726304] [2020-10-23 18:44:50,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663535888] [2020-10-23 18:44:50,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:44:50,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:50,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-23 18:44:50,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:44:50,852 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:44:50,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:44:50,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2020-10-23 18:44:50,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603479473] [2020-10-23 18:44:50,855 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-23 18:44:50,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:44:50,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-23 18:44:50,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-23 18:44:50,858 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 7 states. [2020-10-23 18:44:55,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:44:55,180 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2020-10-23 18:44:55,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-23 18:44:55,181 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-10-23 18:44:55,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:44:55,182 INFO L225 Difference]: With dead ends: 31 [2020-10-23 18:44:55,183 INFO L226 Difference]: Without dead ends: 27 [2020-10-23 18:44:55,184 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-23 18:44:55,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-23 18:44:55,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2020-10-23 18:44:55,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-23 18:44:55,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2020-10-23 18:44:55,210 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 18 [2020-10-23 18:44:55,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:44:55,211 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2020-10-23 18:44:55,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-23 18:44:55,211 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2020-10-23 18:44:55,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-23 18:44:55,212 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:44:55,213 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:44:55,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-10-23 18:44:55,430 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:44:55,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:44:55,432 INFO L82 PathProgramCache]: Analyzing trace with hash -241560691, now seen corresponding path program 2 times [2020-10-23 18:44:55,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:44:55,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284035007] [2020-10-23 18:44:55,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:44:55,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:55,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:44:55,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:55,627 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:44:55,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284035007] [2020-10-23 18:44:55,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492999628] [2020-10-23 18:44:55,628 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:45:02,341 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-23 18:45:02,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 18:45:02,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-23 18:45:02,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:45:02,424 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:45:02,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:45:02,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2020-10-23 18:45:02,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79462206] [2020-10-23 18:45:02,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-23 18:45:02,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:45:02,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-23 18:45:02,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-23 18:45:02,427 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 8 states. [2020-10-23 18:45:08,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:45:08,710 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2020-10-23 18:45:08,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-23 18:45:08,711 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2020-10-23 18:45:08,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:45:08,712 INFO L225 Difference]: With dead ends: 36 [2020-10-23 18:45:08,712 INFO L226 Difference]: Without dead ends: 32 [2020-10-23 18:45:08,713 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-23 18:45:08,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-23 18:45:08,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2020-10-23 18:45:08,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-23 18:45:08,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2020-10-23 18:45:08,720 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 23 [2020-10-23 18:45:08,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:45:08,721 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2020-10-23 18:45:08,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-23 18:45:08,721 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2020-10-23 18:45:08,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-23 18:45:08,722 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:45:08,722 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:45:08,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:45:08,923 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:45:08,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:45:08,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1988412960, now seen corresponding path program 3 times [2020-10-23 18:45:08,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:45:08,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635168246] [2020-10-23 18:45:08,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:45:08,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:09,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:45:09,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:45:09,197 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:45:09,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635168246] [2020-10-23 18:45:09,199 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275486416] [2020-10-23 18:45:09,199 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:45:27,489 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-23 18:45:27,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 18:45:27,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 17 conjunts are in the unsatisfiable core [2020-10-23 18:45:27,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:45:27,662 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 18:45:27,709 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-10-23 18:45:27,710 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-23 18:45:27,734 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 18:45:27,735 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 [2020-10-23 18:45:27,736 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2020-10-23 18:45:27,759 INFO L625 ElimStorePlain]: treesize reduction 5, result has 81.5 percent of original size [2020-10-23 18:45:27,761 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. [2020-10-23 18:45:27,762 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:69, output treesize:22 [2020-10-23 18:45:27,801 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-23 18:45:27,934 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-23 18:45:27,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:45:27,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2020-10-23 18:45:27,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397514126] [2020-10-23 18:45:27,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-23 18:45:27,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:45:27,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-23 18:45:27,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-10-23 18:45:27,940 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 14 states. [2020-10-23 18:45:36,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:45:36,936 INFO L93 Difference]: Finished difference Result 40 states and 42 transitions. [2020-10-23 18:45:36,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-23 18:45:36,937 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 28 [2020-10-23 18:45:36,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:45:36,938 INFO L225 Difference]: With dead ends: 40 [2020-10-23 18:45:36,938 INFO L226 Difference]: Without dead ends: 0 [2020-10-23 18:45:36,939 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=157, Invalid=545, Unknown=0, NotChecked=0, Total=702 [2020-10-23 18:45:36,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-23 18:45:36,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-23 18:45:36,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-23 18:45:36,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-23 18:45:36,941 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2020-10-23 18:45:36,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:45:36,942 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-23 18:45:36,942 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-23 18:45:36,942 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-23 18:45:36,942 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-23 18:45:37,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:45:37,146 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-23 18:45:37,432 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 44 [2020-10-23 18:45:37,435 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2020-10-23 18:45:37,435 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 4) the Hoare annotation is: true [2020-10-23 18:45:37,436 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2020-10-23 18:45:37,436 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-10-23 18:45:37,436 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-23 18:45:37,436 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string8.offset| |old(#t~string8.offset)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#t~string7.offset| |old(#t~string7.offset)|) (= |old(#valid)| |#valid|) (= |#t~string51.base| |old(#t~string51.base)|) (= |#t~string5.base| |old(#t~string5.base)|) (= ~Id_MCDC_93~0 |old(~Id_MCDC_93~0)|) (= |#t~string51.offset| |old(#t~string51.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#t~string8.base| |old(#t~string8.base)|) (= ~__return_main~0 |old(~__return_main~0)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |#t~string7.base| |old(#t~string7.base)|)) [2020-10-23 18:45:37,436 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-23 18:45:37,437 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-23 18:45:37,437 INFO L270 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (= ~Id_MCDC_93~0 0) [2020-10-23 18:45:37,437 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-23 18:45:37,437 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-23 18:45:37,437 INFO L274 CegarLoopResult]: For program point L161(lines 161 236) no Hoare annotation was computed. [2020-10-23 18:45:37,437 INFO L274 CegarLoopResult]: For program point L190(lines 190 208) no Hoare annotation was computed. [2020-10-23 18:45:37,437 INFO L270 CegarLoopResult]: At program point L221(line 221) the Hoare annotation is: (not (= |old(~Id_MCDC_93~0)| 0)) [2020-10-23 18:45:37,438 INFO L274 CegarLoopResult]: For program point L221-1(line 221) no Hoare annotation was computed. [2020-10-23 18:45:37,438 INFO L274 CegarLoopResult]: For program point L219(lines 219 227) no Hoare annotation was computed. [2020-10-23 18:45:37,438 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 133 237) no Hoare annotation was computed. [2020-10-23 18:45:37,438 INFO L274 CegarLoopResult]: For program point L182(lines 182 229) no Hoare annotation was computed. [2020-10-23 18:45:37,438 INFO L274 CegarLoopResult]: For program point L180(lines 180 234) no Hoare annotation was computed. [2020-10-23 18:45:37,438 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 133 237) no Hoare annotation was computed. [2020-10-23 18:45:37,438 INFO L274 CegarLoopResult]: For program point L197(lines 197 207) no Hoare annotation was computed. [2020-10-23 18:45:37,439 INFO L270 CegarLoopResult]: At program point mainENTRY(lines 133 237) 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))) [2020-10-23 18:45:37,439 INFO L270 CegarLoopResult]: At program point L202(lines 167 235) 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)))) [2020-10-23 18:45:37,450 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 18:45:37,451 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 18:45:37,451 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 18:45:37,457 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 18:45:37,458 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 18:45:37,458 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 18:45:37,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:45:37 BoogieIcfgContainer [2020-10-23 18:45:37,461 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 18:45:37,462 INFO L168 Benchmark]: Toolchain (without parser) took 53978.91 ms. Allocated memory was 151.0 MB in the beginning and 201.3 MB in the end (delta: 50.3 MB). Free memory was 125.7 MB in the beginning and 77.8 MB in the end (delta: 47.8 MB). Peak memory consumption was 99.0 MB. Max. memory is 8.0 GB. [2020-10-23 18:45:37,463 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 124.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 18:45:37,464 INFO L168 Benchmark]: CACSL2BoogieTranslator took 477.67 ms. Allocated memory is still 151.0 MB. Free memory was 124.9 MB in the beginning and 109.4 MB in the end (delta: 15.5 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2020-10-23 18:45:37,465 INFO L168 Benchmark]: Boogie Preprocessor took 94.32 ms. Allocated memory is still 151.0 MB. Free memory was 109.4 MB in the beginning and 106.0 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-10-23 18:45:37,466 INFO L168 Benchmark]: RCFGBuilder took 3193.52 ms. Allocated memory is still 151.0 MB. Free memory was 106.0 MB in the beginning and 97.2 MB in the end (delta: 8.8 MB). Peak memory consumption was 42.4 MB. Max. memory is 8.0 GB. [2020-10-23 18:45:37,467 INFO L168 Benchmark]: TraceAbstraction took 50199.85 ms. Allocated memory was 151.0 MB in the beginning and 201.3 MB in the end (delta: 50.3 MB). Free memory was 96.7 MB in the beginning and 77.8 MB in the end (delta: 18.9 MB). Peak memory consumption was 69.2 MB. Max. memory is 8.0 GB. [2020-10-23 18:45:37,471 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 124.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 477.67 ms. Allocated memory is still 151.0 MB. Free memory was 124.9 MB in the beginning and 109.4 MB in the end (delta: 15.5 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 94.32 ms. Allocated memory is still 151.0 MB. Free memory was 109.4 MB in the beginning and 106.0 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 3193.52 ms. Allocated memory is still 151.0 MB. Free memory was 106.0 MB in the beginning and 97.2 MB in the end (delta: 8.8 MB). Peak memory consumption was 42.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 50199.85 ms. Allocated memory was 151.0 MB in the beginning and 201.3 MB in the end (delta: 50.3 MB). Free memory was 96.7 MB in the beginning and 77.8 MB in the end (delta: 18.9 MB). Peak memory consumption was 69.2 MB. Max. memory is 8.0 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: 4]: 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: 167]: Loop Invariant [2020-10-23 18:45:37,480 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 18:45:37,480 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 18:45:37,480 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 18:45:37,481 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 18:45:37,481 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 18:45:37,482 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 4 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 49.8s, OverallIterations: 4, TraceHistogramMax: 4, AutomataDifference: 21.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 53 SDtfs, 112 SDslu, 128 SDs, 0 SdLazy, 299 SolverSat, 64 SolverUnsat, 10 SolverUnknown, 0 SolverNotchecked, 20.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 120 GetRequests, 68 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred 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, 7 LocationsWithAnnotation, 10 PreInvPairs, 15 NumberOfFragments, 170 HoareAnnotationTreeSize, 10 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 289 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 25.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 151 NumberOfCodeBlocks, 146 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 144 ConstructedInterpolants, 0 QuantifiedInterpolants, 19159 SizeOfPredicates, 12 NumberOfNonLiveVariables, 1466 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...