/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/bresenham-ll_unwindbound20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 04:56:58,689 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 04:56:58,692 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 04:56:58,746 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 04:56:58,747 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 04:56:58,751 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 04:56:58,755 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 04:56:58,764 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 04:56:58,767 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 04:56:58,773 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 04:56:58,775 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 04:56:58,776 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 04:56:58,777 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 04:56:58,780 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 04:56:58,782 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 04:56:58,784 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 04:56:58,785 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 04:56:58,788 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 04:56:58,790 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 04:56:58,794 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 04:56:58,796 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 04:56:58,798 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 04:56:58,799 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 04:56:58,800 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 04:56:58,803 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 04:56:58,828 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 04:56:58,829 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 04:56:58,830 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 04:56:58,831 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 04:56:58,887 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 04:56:58,888 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 04:56:58,891 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 04:56:58,892 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 04:56:58,892 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 04:56:58,892 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 04:56:58,892 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 04:56:58,892 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 04:56:58,893 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 04:56:58,893 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 04:56:58,894 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 04:56:58,894 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 04:56:58,895 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 04:56:58,895 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 04:56:58,895 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 04:56:58,895 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 04:56:58,895 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 04:56:58,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 04:56:58,896 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 04:56:58,896 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 04:56:58,896 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 04:56:58,897 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 04:56:58,897 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 04:56:58,897 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 04:56:58,897 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 04:56:58,897 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 04:56:59,313 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 04:56:59,354 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 04:56:59,357 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 04:56:59,359 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 04:56:59,359 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 04:56:59,360 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound20.c [2020-12-22 04:56:59,441 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de7ac0cab/f1ef47af71ba457f87fa8d246db59f82/FLAGb2d7b742a [2020-12-22 04:57:00,069 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 04:57:00,069 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound20.c [2020-12-22 04:57:00,079 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de7ac0cab/f1ef47af71ba457f87fa8d246db59f82/FLAGb2d7b742a [2020-12-22 04:57:00,442 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de7ac0cab/f1ef47af71ba457f87fa8d246db59f82 [2020-12-22 04:57:00,445 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 04:57:00,447 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 04:57:00,451 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 04:57:00,451 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 04:57:00,455 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 04:57:00,455 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:57:00" (1/1) ... [2020-12-22 04:57:00,457 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d13f984 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:57:00, skipping insertion in model container [2020-12-22 04:57:00,458 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:57:00" (1/1) ... [2020-12-22 04:57:00,466 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 04:57:00,483 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 04:57:00,632 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/bresenham-ll_unwindbound20.c[597,610] [2020-12-22 04:57:00,652 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 04:57:00,662 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 04:57:00,676 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/bresenham-ll_unwindbound20.c[597,610] [2020-12-22 04:57:00,685 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 04:57:00,701 INFO L208 MainTranslator]: Completed translation [2020-12-22 04:57:00,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:57:00 WrapperNode [2020-12-22 04:57:00,702 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 04:57:00,703 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 04:57:00,703 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 04:57:00,703 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 04:57:00,712 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:57:00" (1/1) ... [2020-12-22 04:57:00,720 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:57:00" (1/1) ... [2020-12-22 04:57:00,740 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 04:57:00,741 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 04:57:00,741 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 04:57:00,742 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 04:57:00,750 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:57:00" (1/1) ... [2020-12-22 04:57:00,751 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:57:00" (1/1) ... [2020-12-22 04:57:00,752 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:57:00" (1/1) ... [2020-12-22 04:57:00,753 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:57:00" (1/1) ... [2020-12-22 04:57:00,757 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:57:00" (1/1) ... [2020-12-22 04:57:00,761 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:57:00" (1/1) ... [2020-12-22 04:57:00,762 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:57:00" (1/1) ... [2020-12-22 04:57:00,765 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 04:57:00,766 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 04:57:00,766 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 04:57:00,766 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 04:57:00,767 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:57:00" (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 04:57:00,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 04:57:00,883 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 04:57:00,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 04:57:00,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 04:57:01,133 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 04:57:01,133 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2020-12-22 04:57:01,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:57:01 BoogieIcfgContainer [2020-12-22 04:57:01,135 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 04:57:01,137 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 04:57:01,137 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 04:57:01,141 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 04:57:01,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 04:57:00" (1/3) ... [2020-12-22 04:57:01,142 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38fd9e56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:57:01, skipping insertion in model container [2020-12-22 04:57:01,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:57:00" (2/3) ... [2020-12-22 04:57:01,142 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38fd9e56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:57:01, skipping insertion in model container [2020-12-22 04:57:01,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:57:01" (3/3) ... [2020-12-22 04:57:01,144 INFO L111 eAbstractionObserver]: Analyzing ICFG bresenham-ll_unwindbound20.c [2020-12-22 04:57:01,151 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 04:57:01,156 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-22 04:57:01,175 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-22 04:57:01,202 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 04:57:01,202 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 04:57:01,202 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 04:57:01,203 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 04:57:01,203 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 04:57:01,203 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 04:57:01,203 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 04:57:01,203 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 04:57:01,218 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-12-22 04:57:01,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-22 04:57:01,224 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:57:01,225 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-22 04:57:01,225 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:57:01,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:57:01,232 INFO L82 PathProgramCache]: Analyzing trace with hash 890461031, now seen corresponding path program 1 times [2020-12-22 04:57:01,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:57:01,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829031438] [2020-12-22 04:57:01,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:57:01,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:57:01,413 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 04:57:01,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829031438] [2020-12-22 04:57:01,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:57:01,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 04:57:01,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135617474] [2020-12-22 04:57:01,421 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 04:57:01,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:57:01,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 04:57:01,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 04:57:01,441 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2020-12-22 04:57:01,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:57:01,462 INFO L93 Difference]: Finished difference Result 34 states and 44 transitions. [2020-12-22 04:57:01,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 04:57:01,463 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-12-22 04:57:01,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:57:01,474 INFO L225 Difference]: With dead ends: 34 [2020-12-22 04:57:01,474 INFO L226 Difference]: Without dead ends: 14 [2020-12-22 04:57:01,478 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 04:57:01,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-12-22 04:57:01,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-12-22 04:57:01,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-12-22 04:57:01,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2020-12-22 04:57:01,517 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 6 [2020-12-22 04:57:01,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:57:01,518 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2020-12-22 04:57:01,518 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 04:57:01,518 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2020-12-22 04:57:01,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-22 04:57:01,519 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:57:01,519 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-22 04:57:01,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 04:57:01,520 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:57:01,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:57:01,521 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2020-12-22 04:57:01,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:57:01,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33145334] [2020-12-22 04:57:01,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:57:01,544 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:57:01,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1680621219] [2020-12-22 04:57:01,545 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 04:57:01,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:57:01,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-22 04:57:01,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:57:01,766 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 04:57:01,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33145334] [2020-12-22 04:57:01,767 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:57:01,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680621219] [2020-12-22 04:57:01,767 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:57:01,767 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 04:57:01,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669324218] [2020-12-22 04:57:01,769 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 04:57:01,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:57:01,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 04:57:01,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 04:57:01,771 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 4 states. [2020-12-22 04:57:01,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:57:01,876 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2020-12-22 04:57:01,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 04:57:01,878 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-12-22 04:57:01,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:57:01,879 INFO L225 Difference]: With dead ends: 30 [2020-12-22 04:57:01,879 INFO L226 Difference]: Without dead ends: 23 [2020-12-22 04:57:01,880 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 04:57:01,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-22 04:57:01,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 18. [2020-12-22 04:57:01,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-12-22 04:57:01,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2020-12-22 04:57:01,889 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 6 [2020-12-22 04:57:01,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:57:01,890 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2020-12-22 04:57:01,890 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 04:57:01,890 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2020-12-22 04:57:01,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 04:57:01,890 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:57:01,891 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:57:02,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-22 04:57:02,106 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:57:02,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:57:02,107 INFO L82 PathProgramCache]: Analyzing trace with hash -1545533000, now seen corresponding path program 1 times [2020-12-22 04:57:02,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:57:02,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159642981] [2020-12-22 04:57:02,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:57:02,146 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:57:02,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [669584653] [2020-12-22 04:57:02,149 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 04:57:02,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:57:02,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 31 conjunts are in the unsatisfiable core [2020-12-22 04:57:02,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:57:02,401 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 04:57:02,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159642981] [2020-12-22 04:57:02,402 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:57:02,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669584653] [2020-12-22 04:57:02,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:57:02,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 04:57:02,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685494133] [2020-12-22 04:57:02,403 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 04:57:02,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:57:02,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 04:57:02,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 04:57:02,405 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 7 states. [2020-12-22 04:57:02,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:57:02,547 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2020-12-22 04:57:02,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 04:57:02,548 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-12-22 04:57:02,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:57:02,549 INFO L225 Difference]: With dead ends: 35 [2020-12-22 04:57:02,549 INFO L226 Difference]: Without dead ends: 33 [2020-12-22 04:57:02,550 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-12-22 04:57:02,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-12-22 04:57:02,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 23. [2020-12-22 04:57:02,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-22 04:57:02,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2020-12-22 04:57:02,556 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 12 [2020-12-22 04:57:02,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:57:02,557 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2020-12-22 04:57:02,557 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 04:57:02,557 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2020-12-22 04:57:02,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 04:57:02,558 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:57:02,558 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:57:02,771 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:57:02,772 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:57:02,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:57:02,774 INFO L82 PathProgramCache]: Analyzing trace with hash -1602791302, now seen corresponding path program 1 times [2020-12-22 04:57:02,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:57:02,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558025790] [2020-12-22 04:57:02,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:57:02,793 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:57:02,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1115936622] [2020-12-22 04:57:02,795 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 04:57:02,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:57:02,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-22 04:57:02,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:57:02,972 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 04:57:02,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558025790] [2020-12-22 04:57:02,973 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:57:02,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115936622] [2020-12-22 04:57:02,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:57:02,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 04:57:02,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729422942] [2020-12-22 04:57:02,974 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 04:57:02,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:57:02,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 04:57:02,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 04:57:02,978 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 7 states. [2020-12-22 04:57:03,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:57:03,162 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions. [2020-12-22 04:57:03,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 04:57:03,163 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-12-22 04:57:03,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:57:03,166 INFO L225 Difference]: With dead ends: 39 [2020-12-22 04:57:03,166 INFO L226 Difference]: Without dead ends: 33 [2020-12-22 04:57:03,168 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-12-22 04:57:03,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-12-22 04:57:03,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 28. [2020-12-22 04:57:03,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-22 04:57:03,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-12-22 04:57:03,182 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 12 [2020-12-22 04:57:03,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:57:03,182 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-12-22 04:57:03,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 04:57:03,183 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-12-22 04:57:03,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 04:57:03,184 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:57:03,184 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:57:03,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:57:03,402 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:57:03,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:57:03,404 INFO L82 PathProgramCache]: Analyzing trace with hash -666919436, now seen corresponding path program 1 times [2020-12-22 04:57:03,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:57:03,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182216212] [2020-12-22 04:57:03,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:57:03,417 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:57:03,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [892958262] [2020-12-22 04:57:03,418 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 04:57:03,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:57:03,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 04:57:03,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:57:03,523 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 04:57:03,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182216212] [2020-12-22 04:57:03,524 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:57:03,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892958262] [2020-12-22 04:57:03,525 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:57:03,525 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-12-22 04:57:03,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155454084] [2020-12-22 04:57:03,527 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 04:57:03,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:57:03,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 04:57:03,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 04:57:03,528 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-12-22 04:57:03,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:57:03,557 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2020-12-22 04:57:03,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 04:57:03,558 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-22 04:57:03,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:57:03,560 INFO L225 Difference]: With dead ends: 32 [2020-12-22 04:57:03,560 INFO L226 Difference]: Without dead ends: 28 [2020-12-22 04:57:03,561 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 04:57:03,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-12-22 04:57:03,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-12-22 04:57:03,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-22 04:57:03,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2020-12-22 04:57:03,576 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 13 [2020-12-22 04:57:03,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:57:03,576 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2020-12-22 04:57:03,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 04:57:03,577 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2020-12-22 04:57:03,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-22 04:57:03,577 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:57:03,578 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:57:03,793 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:57:03,794 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:57:03,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:57:03,796 INFO L82 PathProgramCache]: Analyzing trace with hash -919296115, now seen corresponding path program 1 times [2020-12-22 04:57:03,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:57:03,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269010400] [2020-12-22 04:57:03,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:57:03,810 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:57:03,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [504667423] [2020-12-22 04:57:03,811 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 04:57:03,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:57:03,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 34 conjunts are in the unsatisfiable core [2020-12-22 04:57:03,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:57:04,061 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 04:57:04,084 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:57:04,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269010400] [2020-12-22 04:57:04,085 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:57:04,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504667423] [2020-12-22 04:57:04,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:57:04,092 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-22 04:57:04,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256050810] [2020-12-22 04:57:04,096 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 04:57:04,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:57:04,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 04:57:04,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-12-22 04:57:04,099 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 11 states. [2020-12-22 04:57:04,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:57:04,333 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2020-12-22 04:57:04,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 04:57:04,334 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-12-22 04:57:04,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:57:04,334 INFO L225 Difference]: With dead ends: 39 [2020-12-22 04:57:04,335 INFO L226 Difference]: Without dead ends: 35 [2020-12-22 04:57:04,336 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2020-12-22 04:57:04,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-12-22 04:57:04,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 24. [2020-12-22 04:57:04,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-12-22 04:57:04,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2020-12-22 04:57:04,344 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 15 [2020-12-22 04:57:04,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:57:04,344 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2020-12-22 04:57:04,344 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 04:57:04,344 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2020-12-22 04:57:04,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 04:57:04,345 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:57:04,346 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2020-12-22 04:57:04,558 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-12-22 04:57:04,559 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:57:04,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:57:04,560 INFO L82 PathProgramCache]: Analyzing trace with hash -443375322, now seen corresponding path program 2 times [2020-12-22 04:57:04,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:57:04,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650096773] [2020-12-22 04:57:04,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:57:04,573 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:57:04,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1745315549] [2020-12-22 04:57:04,573 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 04:57:04,638 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 04:57:04,639 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 04:57:04,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 48 conjunts are in the unsatisfiable core [2020-12-22 04:57:04,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:57:04,892 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:57:04,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650096773] [2020-12-22 04:57:04,893 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:57:04,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745315549] [2020-12-22 04:57:04,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:57:04,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-22 04:57:04,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752332721] [2020-12-22 04:57:04,894 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 04:57:04,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:57:04,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 04:57:04,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-12-22 04:57:04,895 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand 11 states. [2020-12-22 04:57:05,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:57:05,126 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2020-12-22 04:57:05,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 04:57:05,127 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 18 [2020-12-22 04:57:05,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:57:05,127 INFO L225 Difference]: With dead ends: 46 [2020-12-22 04:57:05,128 INFO L226 Difference]: Without dead ends: 44 [2020-12-22 04:57:05,128 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2020-12-22 04:57:05,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-12-22 04:57:05,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 34. [2020-12-22 04:57:05,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-12-22 04:57:05,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2020-12-22 04:57:05,134 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 18 [2020-12-22 04:57:05,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:57:05,134 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2020-12-22 04:57:05,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 04:57:05,134 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2020-12-22 04:57:05,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 04:57:05,135 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:57:05,135 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-22 04:57:05,348 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:57:05,349 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:57:05,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:57:05,350 INFO L82 PathProgramCache]: Analyzing trace with hash -500633624, now seen corresponding path program 1 times [2020-12-22 04:57:05,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:57:05,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906560273] [2020-12-22 04:57:05,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:57:05,362 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:57:05,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1441286868] [2020-12-22 04:57:05,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:57:05,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:57:05,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 43 conjunts are in the unsatisfiable core [2020-12-22 04:57:05,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:57:05,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906560273] [2020-12-22 04:57:05,683 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:57:05,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441286868] [2020-12-22 04:57:05,683 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: null [2020-12-22 04:57:05,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:57:05,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-12-22 04:57:05,683 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2020-12-22 04:57:05,684 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 04:57:05,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:57:05,931 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-12-22 04:57:05,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 04:57:05 BoogieIcfgContainer [2020-12-22 04:57:05,931 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 04:57:05,932 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 04:57:05,932 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 04:57:05,932 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 04:57:05,933 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:57:01" (3/4) ... [2020-12-22 04:57:05,939 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-22 04:57:05,939 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 04:57:05,942 INFO L168 Benchmark]: Toolchain (without parser) took 5493.33 ms. Allocated memory was 155.2 MB in the beginning and 220.2 MB in the end (delta: 65.0 MB). Free memory was 130.2 MB in the beginning and 101.2 MB in the end (delta: 29.0 MB). Peak memory consumption was 95.4 MB. Max. memory is 8.0 GB. [2020-12-22 04:57:05,945 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 155.2 MB. Free memory is still 129.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 04:57:05,950 INFO L168 Benchmark]: CACSL2BoogieTranslator took 251.68 ms. Allocated memory is still 155.2 MB. Free memory was 130.0 MB in the beginning and 119.9 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-22 04:57:05,950 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.41 ms. Allocated memory is still 155.2 MB. Free memory was 119.9 MB in the beginning and 118.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 04:57:05,951 INFO L168 Benchmark]: Boogie Preprocessor took 23.53 ms. Allocated memory is still 155.2 MB. Free memory was 118.6 MB in the beginning and 117.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 04:57:05,955 INFO L168 Benchmark]: RCFGBuilder took 369.63 ms. Allocated memory is still 155.2 MB. Free memory was 117.5 MB in the beginning and 104.2 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-12-22 04:57:05,956 INFO L168 Benchmark]: TraceAbstraction took 4794.54 ms. Allocated memory was 155.2 MB in the beginning and 220.2 MB in the end (delta: 65.0 MB). Free memory was 103.8 MB in the beginning and 101.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 69.2 MB. Max. memory is 8.0 GB. [2020-12-22 04:57:05,958 INFO L168 Benchmark]: Witness Printer took 7.07 ms. Allocated memory is still 220.2 MB. Free memory is still 101.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 04:57:05,967 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 155.2 MB. Free memory is still 129.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 251.68 ms. Allocated memory is still 155.2 MB. Free memory was 130.0 MB in the beginning and 119.9 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 37.41 ms. Allocated memory is still 155.2 MB. Free memory was 119.9 MB in the beginning and 118.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 23.53 ms. Allocated memory is still 155.2 MB. Free memory was 118.6 MB in the beginning and 117.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 369.63 ms. Allocated memory is still 155.2 MB. Free memory was 117.5 MB in the beginning and 104.2 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4794.54 ms. Allocated memory was 155.2 MB in the beginning and 220.2 MB in the end (delta: 65.0 MB). Free memory was 103.8 MB in the beginning and 101.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 69.2 MB. Max. memory is 8.0 GB. * Witness Printer took 7.07 ms. Allocated memory is still 220.2 MB. Free memory is still 101.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 16]: 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 counter = 0; [L23] int X, Y; [L24] long long x, y, v, xy, yx; [L25] X = __VERIFIER_nondet_int() [L26] Y = __VERIFIER_nondet_int() [L27] v = ((long long) 2 * Y) - X [L28] y = 0 [L29] x = 0 [L31] EXPR counter++ [L31] COND TRUE counter++<20 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y [L14] COND FALSE !(!(cond)) [L35] COND FALSE !(!(x <= X)) [L39] COND FALSE !(v < 0) [L42] v = v + 2 * ((long long) Y - X) [L43] y++ [L45] x++ [L31] EXPR counter++ [L31] COND TRUE counter++<20 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y [L14] COND FALSE !(!(cond)) [L35] COND FALSE !(!(x <= X)) [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y [L45] x++ [L31] EXPR counter++ [L31] COND TRUE counter++<20 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y [L14] COND TRUE !(cond) [L16] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 4.7s, OverallIterations: 8, TraceHistogramMax: 3, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 90 SDtfs, 94 SDslu, 254 SDs, 0 SdLazy, 394 SolverSat, 47 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 91 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=7, 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, 7 MinimizatonAttempts, 41 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 82 NumberOfCodeBlocks, 82 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 75 ConstructedInterpolants, 0 QuantifiedInterpolants, 11548 SizeOfPredicates, 66 NumberOfNonLiveVariables, 518 ConjunctsInSsa, 159 ConjunctsInUnsatCore, 7 InterpolantComputations, 2 PerfectInterpolantSequences, 0/24 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...