/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound50.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 05:39:35,066 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 05:39:35,070 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 05:39:35,121 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 05:39:35,122 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 05:39:35,126 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 05:39:35,129 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 05:39:35,137 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 05:39:35,140 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 05:39:35,145 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 05:39:35,146 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 05:39:35,148 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 05:39:35,148 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 05:39:35,152 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 05:39:35,153 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 05:39:35,156 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 05:39:35,166 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 05:39:35,170 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 05:39:35,177 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 05:39:35,180 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 05:39:35,184 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 05:39:35,185 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 05:39:35,187 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 05:39:35,189 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 05:39:35,198 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 05:39:35,207 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 05:39:35,208 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 05:39:35,209 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 05:39:35,209 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 05:39:35,211 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 05:39:35,212 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 05:39:35,212 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 05:39:35,213 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 05:39:35,213 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 05:39:35,214 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 05:39:35,214 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 05:39:35,215 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 05:39:35,264 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 05:39:35,264 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 05:39:35,269 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 05:39:35,269 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 05:39:35,269 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 05:39:35,269 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 05:39:35,270 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 05:39:35,270 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 05:39:35,270 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 05:39:35,270 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 05:39:35,271 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 05:39:35,272 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 05:39:35,272 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 05:39:35,272 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 05:39:35,272 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 05:39:35,272 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 05:39:35,273 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 05:39:35,273 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:39:35,273 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 05:39:35,273 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 05:39:35,274 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 05:39:35,274 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 05:39:35,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 05:39:35,274 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 05:39:35,274 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 05:39:35,274 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 05:39:35,676 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 05:39:35,704 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 05:39:35,708 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 05:39:35,709 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 05:39:35,710 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 05:39:35,711 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound50.c [2020-12-22 05:39:35,783 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7edf707fc/a792d18e0f9e4694a325a83172301299/FLAGc11d20176 [2020-12-22 05:39:36,381 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 05:39:36,382 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound50.c [2020-12-22 05:39:36,389 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7edf707fc/a792d18e0f9e4694a325a83172301299/FLAGc11d20176 [2020-12-22 05:39:36,760 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7edf707fc/a792d18e0f9e4694a325a83172301299 [2020-12-22 05:39:36,766 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 05:39:36,769 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 05:39:36,772 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 05:39:36,773 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 05:39:36,776 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 05:39:36,778 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:39:36" (1/1) ... [2020-12-22 05:39:36,779 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48c76629 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:39:36, skipping insertion in model container [2020-12-22 05:39:36,780 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:39:36" (1/1) ... [2020-12-22 05:39:36,787 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 05:39:36,806 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 05:39:36,951 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound50.c[537,550] [2020-12-22 05:39:36,966 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:39:36,975 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 05:39:36,989 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound50.c[537,550] [2020-12-22 05:39:36,995 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:39:37,010 INFO L208 MainTranslator]: Completed translation [2020-12-22 05:39:37,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:39:37 WrapperNode [2020-12-22 05:39:37,011 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 05:39:37,014 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 05:39:37,014 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 05:39:37,014 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 05:39:37,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:39:37" (1/1) ... [2020-12-22 05:39:37,031 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:39:37" (1/1) ... [2020-12-22 05:39:37,053 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 05:39:37,054 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 05:39:37,054 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 05:39:37,054 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 05:39:37,063 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:39:37" (1/1) ... [2020-12-22 05:39:37,064 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:39:37" (1/1) ... [2020-12-22 05:39:37,065 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:39:37" (1/1) ... [2020-12-22 05:39:37,066 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:39:37" (1/1) ... [2020-12-22 05:39:37,070 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:39:37" (1/1) ... [2020-12-22 05:39:37,074 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:39:37" (1/1) ... [2020-12-22 05:39:37,075 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:39:37" (1/1) ... [2020-12-22 05:39:37,077 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 05:39:37,078 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 05:39:37,079 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 05:39:37,079 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 05:39:37,080 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:39:37" (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 [2020-12-22 05:39:37,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 05:39:37,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 05:39:37,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 05:39:37,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 05:39:37,527 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 05:39:37,528 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2020-12-22 05:39:37,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:39:37 BoogieIcfgContainer [2020-12-22 05:39:37,533 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 05:39:37,535 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 05:39:37,538 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 05:39:37,546 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 05:39:37,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 05:39:36" (1/3) ... [2020-12-22 05:39:37,547 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4195ab5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:39:37, skipping insertion in model container [2020-12-22 05:39:37,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:39:37" (2/3) ... [2020-12-22 05:39:37,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4195ab5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:39:37, skipping insertion in model container [2020-12-22 05:39:37,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:39:37" (3/3) ... [2020-12-22 05:39:37,549 INFO L111 eAbstractionObserver]: Analyzing ICFG prodbin-ll_valuebound50.c [2020-12-22 05:39:37,556 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 05:39:37,561 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-22 05:39:37,635 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-22 05:39:37,666 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 05:39:37,666 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 05:39:37,666 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 05:39:37,666 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 05:39:37,667 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 05:39:37,667 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 05:39:37,667 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 05:39:37,667 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 05:39:37,683 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-12-22 05:39:37,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 05:39:37,688 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:39:37,689 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:39:37,690 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:39:37,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:39:37,696 INFO L82 PathProgramCache]: Analyzing trace with hash 330581779, now seen corresponding path program 1 times [2020-12-22 05:39:37,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:39:37,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163397186] [2020-12-22 05:39:37,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:39:37,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:39:37,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:39:37,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163397186] [2020-12-22 05:39:37,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:39:37,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 05:39:37,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399503474] [2020-12-22 05:39:37,870 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 05:39:37,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:39:37,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 05:39:37,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 05:39:37,888 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2020-12-22 05:39:37,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:39:37,907 INFO L93 Difference]: Finished difference Result 43 states and 58 transitions. [2020-12-22 05:39:37,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 05:39:37,909 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-12-22 05:39:37,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:39:37,918 INFO L225 Difference]: With dead ends: 43 [2020-12-22 05:39:37,918 INFO L226 Difference]: Without dead ends: 19 [2020-12-22 05:39:37,921 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 05:39:37,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-12-22 05:39:37,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-12-22 05:39:37,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-12-22 05:39:37,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2020-12-22 05:39:37,958 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 11 [2020-12-22 05:39:37,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:39:37,959 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2020-12-22 05:39:37,959 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 05:39:37,959 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2020-12-22 05:39:37,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 05:39:37,960 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:39:37,960 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:39:37,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 05:39:37,961 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:39:37,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:39:37,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1507472743, now seen corresponding path program 1 times [2020-12-22 05:39:37,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:39:37,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729377262] [2020-12-22 05:39:37,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:39:37,984 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:39:37,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1781698964] [2020-12-22 05:39:37,985 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 [2020-12-22 05:39:38,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:39:38,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-22 05:39:38,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:39:38,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:39:38,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729377262] [2020-12-22 05:39:38,280 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:39:38,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781698964] [2020-12-22 05:39:38,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:39:38,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 05:39:38,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173712130] [2020-12-22 05:39:38,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:39:38,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:39:38,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:39:38,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:39:38,284 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 6 states. [2020-12-22 05:39:38,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:39:38,517 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2020-12-22 05:39:38,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 05:39:38,518 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-12-22 05:39:38,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:39:38,519 INFO L225 Difference]: With dead ends: 32 [2020-12-22 05:39:38,520 INFO L226 Difference]: Without dead ends: 30 [2020-12-22 05:39:38,521 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:39:38,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-12-22 05:39:38,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 21. [2020-12-22 05:39:38,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-12-22 05:39:38,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2020-12-22 05:39:38,527 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 11 [2020-12-22 05:39:38,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:39:38,527 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2020-12-22 05:39:38,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:39:38,528 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2020-12-22 05:39:38,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-22 05:39:38,529 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:39:38,529 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:39:38,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-22 05:39:38,744 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:39:38,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:39:38,746 INFO L82 PathProgramCache]: Analyzing trace with hash -937526112, now seen corresponding path program 1 times [2020-12-22 05:39:38,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:39:38,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575362811] [2020-12-22 05:39:38,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:39:38,773 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:39:38,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1977913745] [2020-12-22 05:39:38,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:39:38,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:39:38,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 05:39:38,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:39:38,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:39:38,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575362811] [2020-12-22 05:39:38,882 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:39:38,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977913745] [2020-12-22 05:39:38,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:39:38,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:39:38,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893779495] [2020-12-22 05:39:38,883 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:39:38,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:39:38,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:39:38,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:39:38,885 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 5 states. [2020-12-22 05:39:38,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:39:38,958 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2020-12-22 05:39:38,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:39:38,958 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-22 05:39:38,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:39:38,960 INFO L225 Difference]: With dead ends: 28 [2020-12-22 05:39:38,960 INFO L226 Difference]: Without dead ends: 24 [2020-12-22 05:39:38,960 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:39:38,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-12-22 05:39:38,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2020-12-22 05:39:38,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-12-22 05:39:38,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-12-22 05:39:38,966 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 14 [2020-12-22 05:39:38,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:39:38,966 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-12-22 05:39:38,966 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:39:38,966 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-12-22 05:39:38,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 05:39:38,967 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:39:38,967 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:39:39,180 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:39:39,181 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:39:39,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:39:39,183 INFO L82 PathProgramCache]: Analyzing trace with hash 1030171456, now seen corresponding path program 1 times [2020-12-22 05:39:39,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:39:39,184 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452085578] [2020-12-22 05:39:39,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:39:39,209 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:39:39,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1142040453] [2020-12-22 05:39:39,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:39:39,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:39:39,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 36 conjunts are in the unsatisfiable core [2020-12-22 05:39:39,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:39:39,505 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 05:39:39,529 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 05:39:39,550 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 05:39:39,599 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:39:39,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452085578] [2020-12-22 05:39:39,600 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:39:39,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142040453] [2020-12-22 05:39:39,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:39:39,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-22 05:39:39,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71732527] [2020-12-22 05:39:39,602 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 05:39:39,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:39:39,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 05:39:39,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:39:39,603 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 9 states. [2020-12-22 05:39:39,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:39:39,905 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2020-12-22 05:39:39,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 05:39:39,906 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2020-12-22 05:39:39,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:39:39,907 INFO L225 Difference]: With dead ends: 38 [2020-12-22 05:39:39,907 INFO L226 Difference]: Without dead ends: 36 [2020-12-22 05:39:39,908 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2020-12-22 05:39:39,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-12-22 05:39:39,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 26. [2020-12-22 05:39:39,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-12-22 05:39:39,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2020-12-22 05:39:39,914 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 16 [2020-12-22 05:39:39,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:39:39,914 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2020-12-22 05:39:39,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 05:39:39,914 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2020-12-22 05:39:39,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 05:39:39,915 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:39:39,915 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:39:40,130 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:39:40,131 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:39:40,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:39:40,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1032018498, now seen corresponding path program 1 times [2020-12-22 05:39:40,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:39:40,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631297978] [2020-12-22 05:39:40,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:39:40,149 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:39:40,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1546456156] [2020-12-22 05:39:40,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:39:40,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:39:40,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 31 conjunts are in the unsatisfiable core [2020-12-22 05:39:40,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:39:40,449 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 05:39:40,463 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 05:39:40,476 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 05:39:40,485 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 05:39:40,595 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 05:39:40,618 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:39:40,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631297978] [2020-12-22 05:39:40,619 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:39:40,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546456156] [2020-12-22 05:39:40,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:39:40,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-22 05:39:40,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485201658] [2020-12-22 05:39:40,620 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 05:39:40,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:39:40,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 05:39:40,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-12-22 05:39:40,621 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 10 states. [2020-12-22 05:39:41,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:39:41,992 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2020-12-22 05:39:41,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 05:39:41,993 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 16 [2020-12-22 05:39:41,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:39:41,994 INFO L225 Difference]: With dead ends: 40 [2020-12-22 05:39:41,994 INFO L226 Difference]: Without dead ends: 34 [2020-12-22 05:39:41,995 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2020-12-22 05:39:41,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-12-22 05:39:41,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 30. [2020-12-22 05:39:42,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-12-22 05:39:42,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2020-12-22 05:39:42,000 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 16 [2020-12-22 05:39:42,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:39:42,001 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2020-12-22 05:39:42,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 05:39:42,001 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2020-12-22 05:39:42,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-22 05:39:42,002 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:39:42,002 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:39:42,215 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:39:42,216 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:39:42,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:39:42,217 INFO L82 PathProgramCache]: Analyzing trace with hash -1993537895, now seen corresponding path program 1 times [2020-12-22 05:39:42,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:39:42,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468599292] [2020-12-22 05:39:42,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:39:42,232 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:39:42,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1802044549] [2020-12-22 05:39:42,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:39:42,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:39:42,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-22 05:39:42,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:39:42,522 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 4, 1] term [2020-12-22 05:39:42,522 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 05:39:42,608 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:39:42,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468599292] [2020-12-22 05:39:42,609 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:39:42,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802044549] [2020-12-22 05:39:42,609 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:39:42,609 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-22 05:39:42,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904789989] [2020-12-22 05:39:42,610 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 05:39:42,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:39:42,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 05:39:42,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-12-22 05:39:42,611 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand 10 states. [2020-12-22 05:39:45,250 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 33 [2020-12-22 05:39:45,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:39:45,412 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2020-12-22 05:39:45,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 05:39:45,413 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 19 [2020-12-22 05:39:45,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:39:45,413 INFO L225 Difference]: With dead ends: 31 [2020-12-22 05:39:45,414 INFO L226 Difference]: Without dead ends: 27 [2020-12-22 05:39:45,414 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2020-12-22 05:39:45,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-12-22 05:39:45,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2020-12-22 05:39:45,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-12-22 05:39:45,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2020-12-22 05:39:45,419 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 19 [2020-12-22 05:39:45,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:39:45,419 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2020-12-22 05:39:45,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 05:39:45,420 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2020-12-22 05:39:45,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-22 05:39:45,420 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:39:45,420 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:39:45,632 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-12-22 05:39:45,633 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:39:45,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:39:45,634 INFO L82 PathProgramCache]: Analyzing trace with hash -184870151, now seen corresponding path program 2 times [2020-12-22 05:39:45,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:39:45,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252135476] [2020-12-22 05:39:45,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:39:45,649 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:39:45,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [208556688] [2020-12-22 05:39:45,650 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:39:45,706 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:39:45,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:39:45,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 48 conjunts are in the unsatisfiable core [2020-12-22 05:39:45,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:39:47,867 WARN L838 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~x~0 (* 2 c_ULTIMATE.start_main_~a~0)) (= c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~z~0) (= c_ULTIMATE.start_main_~y~0 (div (+ c_ULTIMATE.start_main_~b~0 (- 1)) 2)) (<= 1 (mod c_ULTIMATE.start_main_~b~0 2)) (let ((.cse0 (= (+ c_ULTIMATE.start_main_~z~0 (* c_ULTIMATE.start_main_~x~0 c_ULTIMATE.start_main_~y~0)) (* c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~b~0)))) (or (and (= 1 c_ULTIMATE.start___VERIFIER_assert_~cond) .cse0) (and (= 0 c_ULTIMATE.start___VERIFIER_assert_~cond) (not .cse0)))) (<= 1 c_ULTIMATE.start_main_~b~0)) is different from false [2020-12-22 05:39:53,921 WARN L197 SmtUtils]: Spent 4.02 s on a formula simplification that was a NOOP. DAG size: 22 [2020-12-22 05:40:02,122 WARN L197 SmtUtils]: Spent 6.08 s on a formula simplification that was a NOOP. DAG size: 25 [2020-12-22 05:40:10,894 WARN L197 SmtUtils]: Spent 8.36 s on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2020-12-22 05:40:16,337 WARN L197 SmtUtils]: Spent 5.39 s on a formula simplification. DAG size of input: 44 DAG size of output: 31 [2020-12-22 05:40:16,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252135476] [2020-12-22 05:40:16,363 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:40:16,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208556688] [2020-12-22 05:40:16,364 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: null [2020-12-22 05:40:16,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:40:16,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-12-22 05:40:16,365 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2020-12-22 05:40:16,365 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 05:40:16,572 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:40:16,590 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-12-22 05:40:16,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 05:40:16 BoogieIcfgContainer [2020-12-22 05:40:16,591 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 05:40:16,591 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 05:40:16,591 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 05:40:16,591 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 05:40:16,592 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:39:37" (3/4) ... [2020-12-22 05:40:16,595 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-22 05:40:16,595 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 05:40:16,596 INFO L168 Benchmark]: Toolchain (without parser) took 39827.05 ms. Allocated memory was 156.2 MB in the beginning and 187.7 MB in the end (delta: 31.5 MB). Free memory was 131.2 MB in the beginning and 135.3 MB in the end (delta: -4.1 MB). Peak memory consumption was 28.4 MB. Max. memory is 8.0 GB. [2020-12-22 05:40:16,597 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 156.2 MB. Free memory is still 128.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 05:40:16,597 INFO L168 Benchmark]: CACSL2BoogieTranslator took 239.33 ms. Allocated memory is still 156.2 MB. Free memory was 131.0 MB in the beginning and 121.4 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-22 05:40:16,598 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.94 ms. Allocated memory is still 156.2 MB. Free memory was 121.2 MB in the beginning and 119.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 05:40:16,599 INFO L168 Benchmark]: Boogie Preprocessor took 23.30 ms. Allocated memory is still 156.2 MB. Free memory was 119.2 MB in the beginning and 118.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 05:40:16,600 INFO L168 Benchmark]: RCFGBuilder took 454.87 ms. Allocated memory is still 156.2 MB. Free memory was 118.1 MB in the beginning and 104.5 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-12-22 05:40:16,600 INFO L168 Benchmark]: TraceAbstraction took 39055.85 ms. Allocated memory was 156.2 MB in the beginning and 187.7 MB in the end (delta: 31.5 MB). Free memory was 104.1 MB in the beginning and 135.9 MB in the end (delta: -31.7 MB). Peak memory consumption was 1.1 MB. Max. memory is 8.0 GB. [2020-12-22 05:40:16,601 INFO L168 Benchmark]: Witness Printer took 3.63 ms. Allocated memory is still 187.7 MB. Free memory was 135.9 MB in the beginning and 135.3 MB in the end (delta: 522.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 05:40:16,605 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 156.2 MB. Free memory is still 128.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 239.33 ms. Allocated memory is still 156.2 MB. Free memory was 131.0 MB in the beginning and 121.4 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 39.94 ms. Allocated memory is still 156.2 MB. Free memory was 121.2 MB in the beginning and 119.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 23.30 ms. Allocated memory is still 156.2 MB. Free memory was 119.2 MB in the beginning and 118.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 454.87 ms. Allocated memory is still 156.2 MB. Free memory was 118.1 MB in the beginning and 104.5 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 39055.85 ms. Allocated memory was 156.2 MB in the beginning and 187.7 MB in the end (delta: 31.5 MB). Free memory was 104.1 MB in the beginning and 135.9 MB in the end (delta: -31.7 MB). Peak memory consumption was 1.1 MB. Max. memory is 8.0 GB. * Witness Printer took 3.63 ms. Allocated memory is still 187.7 MB. Free memory was 135.9 MB in the beginning and 135.3 MB in the end (delta: 522.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 15]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L21] int a, b; [L22] long long x, y, z; [L24] a = __VERIFIER_nondet_int() [L10] COND FALSE !(!cond) [L26] b = __VERIFIER_nondet_int() [L10] COND FALSE !(!cond) [L10] COND FALSE !(!cond) [L30] x = a [L31] y = b [L32] z = 0 [L34] COND TRUE 1 [L13] COND FALSE !(!(cond)) [L36] COND FALSE !(!(y != 0)) [L39] COND TRUE y % 2 == 1 [L40] z = z + x [L41] y = y - 1 [L43] x = 2 * x [L44] y = y / 2 [L34] COND TRUE 1 [L13] COND FALSE !(!(cond)) [L36] COND FALSE !(!(y != 0)) [L39] COND TRUE y % 2 == 1 [L40] z = z + x [L41] y = y - 1 [L43] x = 2 * x [L44] y = y / 2 [L34] COND TRUE 1 [L13] COND TRUE !(cond) [L15] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 23 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 38.9s, OverallIterations: 7, TraceHistogramMax: 3, AutomataDifference: 4.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 76 SDtfs, 250 SDslu, 127 SDs, 0 SdLazy, 296 SolverSat, 56 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 3.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 100 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 30 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 87 NumberOfCodeBlocks, 87 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 81 ConstructedInterpolants, 1 QuantifiedInterpolants, 9213 SizeOfPredicates, 41 NumberOfNonLiveVariables, 392 ConjunctsInSsa, 112 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 0/7 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request...