/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/geo2-ll_valuebound20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 17:41:38,620 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 17:41:38,623 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 17:41:38,677 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 17:41:38,678 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 17:41:38,681 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 17:41:38,685 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 17:41:38,690 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 17:41:38,693 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 17:41:38,698 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 17:41:38,702 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 17:41:38,703 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 17:41:38,704 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 17:41:38,706 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 17:41:38,708 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 17:41:38,710 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 17:41:38,711 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 17:41:38,715 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 17:41:38,731 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 17:41:38,737 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 17:41:38,739 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 17:41:38,741 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 17:41:38,742 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 17:41:38,745 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 17:41:38,750 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 17:41:38,771 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 17:41:38,772 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 17:41:38,772 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 17:41:38,773 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 17:41:38,808 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 17:41:38,809 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 17:41:38,810 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 17:41:38,810 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 17:41:38,811 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 17:41:38,811 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 17:41:38,811 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 17:41:38,811 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 17:41:38,811 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 17:41:38,812 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 17:41:38,812 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 17:41:38,812 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 17:41:38,812 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 17:41:38,812 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 17:41:38,813 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 17:41:38,813 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 17:41:38,813 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 17:41:38,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:41:38,814 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 17:41:38,814 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 17:41:38,814 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 17:41:38,814 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 17:41:38,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 17:41:38,815 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 17:41:38,815 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 17:41:38,815 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-bitabs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 17:41:39,160 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 17:41:39,187 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 17:41:39,191 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 17:41:39,192 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 17:41:39,192 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 17:41:39,193 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/geo2-ll_valuebound20.c [2021-01-06 17:41:39,271 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/7f65ff8ea/810044f0b34b4137b1194a993727aef6/FLAGaeab463c0 [2021-01-06 17:41:39,956 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 17:41:39,957 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/geo2-ll_valuebound20.c [2021-01-06 17:41:39,963 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/7f65ff8ea/810044f0b34b4137b1194a993727aef6/FLAGaeab463c0 [2021-01-06 17:41:40,354 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/7f65ff8ea/810044f0b34b4137b1194a993727aef6 [2021-01-06 17:41:40,357 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 17:41:40,360 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 17:41:40,364 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 17:41:40,364 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 17:41:40,368 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 17:41:40,369 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:41:40" (1/1) ... [2021-01-06 17:41:40,372 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c84bbab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:41:40, skipping insertion in model container [2021-01-06 17:41:40,372 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:41:40" (1/1) ... [2021-01-06 17:41:40,384 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 17:41:40,405 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 17:41:40,591 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/geo2-ll_valuebound20.c[525,538] left hand side expression in assignment: lhs: VariableLHS[~z~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] [2021-01-06 17:41:40,608 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:41:40,618 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 17:41:40,633 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/geo2-ll_valuebound20.c[525,538] left hand side expression in assignment: lhs: VariableLHS[~z~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] [2021-01-06 17:41:40,640 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:41:40,656 INFO L208 MainTranslator]: Completed translation [2021-01-06 17:41:40,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:41:40 WrapperNode [2021-01-06 17:41:40,657 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 17:41:40,658 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 17:41:40,658 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 17:41:40,658 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 17:41:40,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:41:40" (1/1) ... [2021-01-06 17:41:40,675 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:41:40" (1/1) ... [2021-01-06 17:41:40,695 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 17:41:40,696 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 17:41:40,697 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 17:41:40,697 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 17:41:40,706 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:41:40" (1/1) ... [2021-01-06 17:41:40,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:41:40" (1/1) ... [2021-01-06 17:41:40,708 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:41:40" (1/1) ... [2021-01-06 17:41:40,708 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:41:40" (1/1) ... [2021-01-06 17:41:40,712 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:41:40" (1/1) ... [2021-01-06 17:41:40,716 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:41:40" (1/1) ... [2021-01-06 17:41:40,717 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:41:40" (1/1) ... [2021-01-06 17:41:40,719 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 17:41:40,720 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 17:41:40,721 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 17:41:40,721 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 17:41:40,726 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:41:40" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:41:40,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 17:41:40,846 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 17:41:40,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 17:41:40,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 17:41:41,171 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 17:41:41,171 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-01-06 17:41:41,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:41:41 BoogieIcfgContainer [2021-01-06 17:41:41,173 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 17:41:41,175 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 17:41:41,175 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 17:41:41,179 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 17:41:41,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 05:41:40" (1/3) ... [2021-01-06 17:41:41,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cb456e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:41:41, skipping insertion in model container [2021-01-06 17:41:41,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:41:40" (2/3) ... [2021-01-06 17:41:41,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cb456e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:41:41, skipping insertion in model container [2021-01-06 17:41:41,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:41:41" (3/3) ... [2021-01-06 17:41:41,182 INFO L111 eAbstractionObserver]: Analyzing ICFG geo2-ll_valuebound20.c [2021-01-06 17:41:41,189 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 17:41:41,194 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-01-06 17:41:41,215 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-01-06 17:41:41,294 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 17:41:41,297 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 17:41:41,297 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 17:41:41,298 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 17:41:41,298 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 17:41:41,298 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 17:41:41,298 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 17:41:41,298 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 17:41:41,326 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2021-01-06 17:41:41,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-01-06 17:41:41,330 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:41:41,331 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:41:41,331 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:41:41,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:41:41,338 INFO L82 PathProgramCache]: Analyzing trace with hash -594062832, now seen corresponding path program 1 times [2021-01-06 17:41:41,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:41:41,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387646677] [2021-01-06 17:41:41,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:41:41,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:41:41,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:41:41,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387646677] [2021-01-06 17:41:41,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:41:41,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 17:41:41,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569985457] [2021-01-06 17:41:41,515 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 17:41:41,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:41:41,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 17:41:41,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 17:41:41,533 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2021-01-06 17:41:41,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:41:41,552 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2021-01-06 17:41:41,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 17:41:41,554 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2021-01-06 17:41:41,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:41:41,563 INFO L225 Difference]: With dead ends: 35 [2021-01-06 17:41:41,563 INFO L226 Difference]: Without dead ends: 15 [2021-01-06 17:41:41,566 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 [2021-01-06 17:41:41,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-01-06 17:41:41,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-01-06 17:41:41,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-01-06 17:41:41,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-01-06 17:41:41,603 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 9 [2021-01-06 17:41:41,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:41:41,604 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-01-06 17:41:41,604 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 17:41:41,604 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-01-06 17:41:41,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-01-06 17:41:41,605 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:41:41,605 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:41:41,605 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 17:41:41,606 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:41:41,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:41:41,607 INFO L82 PathProgramCache]: Analyzing trace with hash 1182791572, now seen corresponding path program 1 times [2021-01-06 17:41:41,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:41:41,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993218041] [2021-01-06 17:41:41,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:41:41,630 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:41:41,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [644019300] [2021-01-06 17:41:41,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:41:41,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:41:41,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 15 conjunts are in the unsatisfiable core [2021-01-06 17:41:41,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:41:41,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:41:42,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993218041] [2021-01-06 17:41:42,001 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:41:42,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644019300] [2021-01-06 17:41:42,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:41:42,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 17:41:42,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705142643] [2021-01-06 17:41:42,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:41:42,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:41:42,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:41:42,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:41:42,009 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 6 states. [2021-01-06 17:41:42,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:41:42,253 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2021-01-06 17:41:42,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:41:42,254 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2021-01-06 17:41:42,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:41:42,256 INFO L225 Difference]: With dead ends: 25 [2021-01-06 17:41:42,256 INFO L226 Difference]: Without dead ends: 19 [2021-01-06 17:41:42,258 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:41:42,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-01-06 17:41:42,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2021-01-06 17:41:42,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-01-06 17:41:42,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2021-01-06 17:41:42,271 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 9 [2021-01-06 17:41:42,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:41:42,271 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2021-01-06 17:41:42,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:41:42,271 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2021-01-06 17:41:42,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-01-06 17:41:42,272 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:41:42,272 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:41:42,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-01-06 17:41:42,487 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:41:42,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:41:42,489 INFO L82 PathProgramCache]: Analyzing trace with hash 636965506, now seen corresponding path program 1 times [2021-01-06 17:41:42,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:41:42,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397630871] [2021-01-06 17:41:42,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:41:42,507 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:41:42,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1344129542] [2021-01-06 17:41:42,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:41:42,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:41:42,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 21 conjunts are in the unsatisfiable core [2021-01-06 17:41:42,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:41:42,677 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:41:42,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397630871] [2021-01-06 17:41:42,678 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:41:42,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344129542] [2021-01-06 17:41:42,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:41:42,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-06 17:41:42,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997985819] [2021-01-06 17:41:42,679 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:41:42,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:41:42,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:41:42,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:41:42,681 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 7 states. [2021-01-06 17:41:42,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:41:42,836 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2021-01-06 17:41:42,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 17:41:42,837 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2021-01-06 17:41:42,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:41:42,838 INFO L225 Difference]: With dead ends: 28 [2021-01-06 17:41:42,838 INFO L226 Difference]: Without dead ends: 22 [2021-01-06 17:41:42,839 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-01-06 17:41:42,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-01-06 17:41:42,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2021-01-06 17:41:42,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-01-06 17:41:42,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2021-01-06 17:41:42,845 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 12 [2021-01-06 17:41:42,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:41:42,845 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2021-01-06 17:41:42,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:41:42,845 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2021-01-06 17:41:42,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-01-06 17:41:42,846 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:41:42,846 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:41:43,060 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:41:43,061 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:41:43,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:41:43,062 INFO L82 PathProgramCache]: Analyzing trace with hash 678815956, now seen corresponding path program 2 times [2021-01-06 17:41:43,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:41:43,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973097660] [2021-01-06 17:41:43,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:41:43,087 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:41:43,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1023884704] [2021-01-06 17:41:43,088 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:41:43,171 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:41:43,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:41:43,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 37 conjunts are in the unsatisfiable core [2021-01-06 17:41:43,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:41:47,656 WARN L197 SmtUtils]: Spent 4.29 s on a formula simplification. DAG size of input: 24 DAG size of output: 14 [2021-01-06 17:41:47,736 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:41:47,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973097660] [2021-01-06 17:41:47,737 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:41:47,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023884704] [2021-01-06 17:41:47,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:41:47,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-01-06 17:41:47,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736966591] [2021-01-06 17:41:47,739 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-06 17:41:47,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:41:47,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-06 17:41:47,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:41:47,743 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 10 states. [2021-01-06 17:41:48,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:41:48,452 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2021-01-06 17:41:48,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-06 17:41:48,452 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2021-01-06 17:41:48,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:41:48,453 INFO L225 Difference]: With dead ends: 31 [2021-01-06 17:41:48,453 INFO L226 Difference]: Without dead ends: 25 [2021-01-06 17:41:48,454 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-01-06 17:41:48,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-01-06 17:41:48,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2021-01-06 17:41:48,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-01-06 17:41:48,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2021-01-06 17:41:48,460 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 15 [2021-01-06 17:41:48,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:41:48,460 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2021-01-06 17:41:48,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-06 17:41:48,460 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2021-01-06 17:41:48,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-01-06 17:41:48,461 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:41:48,461 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:41:48,669 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:41:48,670 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:41:48,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:41:48,671 INFO L82 PathProgramCache]: Analyzing trace with hash 1905056066, now seen corresponding path program 3 times [2021-01-06 17:41:48,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:41:48,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62157889] [2021-01-06 17:41:48,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:41:48,688 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:41:48,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1231673423] [2021-01-06 17:41:48,689 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-06 17:41:50,715 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-01-06 17:41:50,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:41:50,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 37 conjunts are in the unsatisfiable core [2021-01-06 17:41:50,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:41:51,225 WARN L197 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2021-01-06 17:42:05,705 WARN L197 SmtUtils]: Spent 14.43 s on a formula simplification. DAG size of input: 28 DAG size of output: 27 [2021-01-06 17:42:17,748 WARN L197 SmtUtils]: Spent 11.09 s on a formula simplification. DAG size of input: 37 DAG size of output: 33 [2021-01-06 17:42:17,784 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 17:42:17,804 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 17:42:17,824 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 17:42:17,854 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 17:42:17,876 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 17:42:17,886 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 17:42:17,892 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 17:42:17,898 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2021-01-06 17:42:34,942 WARN L197 SmtUtils]: Spent 10.16 s on a formula simplification that was a NOOP. DAG size: 41 [2021-01-06 17:42:41,033 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~z~0 Int) (ULTIMATE.start_main_~x~0 Int) (ULTIMATE.start_main_~y~0 Int)) (let ((.cse0 (+ ULTIMATE.start_main_~x~0 (- 1)))) (let ((.cse2 (div ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~z~0)) (.cse1 (div .cse0 ULTIMATE.start_main_~z~0))) (and (<= 0 ULTIMATE.start_main_~z~0) (= (mod ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~z~0) 0) (= (mod .cse0 ULTIMATE.start_main_~z~0) 0) (= (mod (+ .cse1 (- 1)) ULTIMATE.start_main_~z~0) 0) (<= ULTIMATE.start_main_~z~0 20) (= (mod .cse2 ULTIMATE.start_main_~z~0) 0) (= (+ (* ULTIMATE.start_main_~z~0 .cse2) .cse1) (+ (* .cse1 ULTIMATE.start_main_~z~0) 1)) (not (= ULTIMATE.start_main_~z~0 0)) (not (= (+ ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0)) (+ (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) 1))))))) is different from false [2021-01-06 17:42:43,040 WARN L860 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~z~0 Int) (ULTIMATE.start_main_~x~0 Int) (ULTIMATE.start_main_~y~0 Int)) (let ((.cse0 (+ ULTIMATE.start_main_~x~0 (- 1)))) (let ((.cse2 (div ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~z~0)) (.cse1 (div .cse0 ULTIMATE.start_main_~z~0))) (and (<= 0 ULTIMATE.start_main_~z~0) (= (mod ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~z~0) 0) (= (mod .cse0 ULTIMATE.start_main_~z~0) 0) (= (mod (+ .cse1 (- 1)) ULTIMATE.start_main_~z~0) 0) (<= ULTIMATE.start_main_~z~0 20) (= (mod .cse2 ULTIMATE.start_main_~z~0) 0) (= (+ (* ULTIMATE.start_main_~z~0 .cse2) .cse1) (+ (* .cse1 ULTIMATE.start_main_~z~0) 1)) (not (= ULTIMATE.start_main_~z~0 0)) (not (= (+ ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0)) (+ (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) 1))))))) is different from true [2021-01-06 17:42:43,045 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-06 17:42:43,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62157889] [2021-01-06 17:42:43,045 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:42:43,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231673423] [2021-01-06 17:42:43,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:42:43,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-01-06 17:42:43,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146783900] [2021-01-06 17:42:43,049 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-06 17:42:43,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:42:43,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-06 17:42:43,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=81, Unknown=3, NotChecked=18, Total=132 [2021-01-06 17:42:43,052 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 12 states. [2021-01-06 17:43:00,706 WARN L197 SmtUtils]: Spent 16.79 s on a formula simplification. DAG size of input: 36 DAG size of output: 29 [2021-01-06 17:43:15,902 WARN L197 SmtUtils]: Spent 4.58 s on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2021-01-06 17:44:32,714 WARN L197 SmtUtils]: Spent 1.04 m on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2021-01-06 17:45:12,257 WARN L197 SmtUtils]: Spent 35.43 s on a formula simplification. DAG size of input: 51 DAG size of output: 43 [2021-01-06 17:45:16,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:45:16,411 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2021-01-06 17:45:16,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-01-06 17:45:16,413 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 18 [2021-01-06 17:45:16,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:45:16,413 INFO L225 Difference]: With dead ends: 24 [2021-01-06 17:45:16,413 INFO L226 Difference]: Without dead ends: 0 [2021-01-06 17:45:16,414 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 184.0s TimeCoverageRelationStatistics Valid=74, Invalid=189, Unknown=13, NotChecked=30, Total=306 [2021-01-06 17:45:16,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-01-06 17:45:16,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-01-06 17:45:16,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-01-06 17:45:16,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-01-06 17:45:16,415 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2021-01-06 17:45:16,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:45:16,416 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-01-06 17:45:16,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-01-06 17:45:16,416 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-01-06 17:45:16,416 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-06 17:45:16,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:45:16,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-01-06 17:45:16,728 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-01-06 17:45:27,667 WARN L197 SmtUtils]: Spent 10.91 s on a formula simplification. DAG size of input: 57 DAG size of output: 41 [2021-01-06 17:46:25,754 WARN L197 SmtUtils]: Spent 58.09 s on a formula simplification. DAG size of input: 55 DAG size of output: 46 [2021-01-06 17:46:25,761 INFO L185 CegarLoopUtils]: At program point L35-2(lines 35 44) the Hoare annotation is: (let ((.cse0 (<= 0 ULTIMATE.start_main_~z~0)) (.cse3 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (<= ULTIMATE.start_main_~z~0 20))) (or (and .cse0 (= ULTIMATE.start_main_~x~0 1) .cse1 (= ULTIMATE.start_main_~y~0 1)) (let ((.cse2 (+ ULTIMATE.start_main_~x~0 (- 1)))) (let ((.cse5 (div ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~z~0)) (.cse4 (div .cse2 ULTIMATE.start_main_~z~0))) (and .cse0 (= (mod ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~z~0) 0) (= (mod .cse2 ULTIMATE.start_main_~z~0) 0) .cse3 (= (mod (+ .cse4 (- 1)) ULTIMATE.start_main_~z~0) 0) .cse1 (= (mod .cse5 ULTIMATE.start_main_~z~0) 0) (= (+ (* ULTIMATE.start_main_~z~0 .cse5) .cse4) (+ (* .cse4 ULTIMATE.start_main_~z~0) 1)) (not (= ULTIMATE.start_main_~z~0 0))))) (and .cse0 .cse3 .cse1 (= ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~z~0 1))))) [2021-01-06 17:46:25,762 INFO L189 CegarLoopUtils]: For program point L35-3(lines 35 44) no Hoare annotation was computed. [2021-01-06 17:46:25,762 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-01-06 17:46:25,762 INFO L189 CegarLoopUtils]: For program point L15(lines 15 18) no Hoare annotation was computed. [2021-01-06 17:46:25,762 INFO L185 CegarLoopUtils]: At program point L15-2(lines 38 39) the Hoare annotation is: (let ((.cse0 (<= 0 ULTIMATE.start_main_~z~0)) (.cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (<= ULTIMATE.start_main_~z~0 20))) (or (and .cse0 (= ULTIMATE.start_main_~x~0 1) .cse1 .cse2 (= ULTIMATE.start_main_~y~0 1)) (let ((.cse3 (+ ULTIMATE.start_main_~x~0 (- 1)))) (let ((.cse5 (div ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~z~0)) (.cse4 (div .cse3 ULTIMATE.start_main_~z~0))) (and .cse0 (= (mod ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~z~0) 0) (= (mod .cse3 ULTIMATE.start_main_~z~0) 0) .cse1 (= (mod (+ .cse4 (- 1)) ULTIMATE.start_main_~z~0) 0) .cse2 (= (mod .cse5 ULTIMATE.start_main_~z~0) 0) (= (+ (* ULTIMATE.start_main_~z~0 .cse5) .cse4) (+ (* .cse4 ULTIMATE.start_main_~z~0) 1)) (not (= ULTIMATE.start_main_~z~0 0)) (= (+ (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~x~0) (+ (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) 1))))) (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~z~0 1))))) [2021-01-06 17:46:25,763 INFO L189 CegarLoopUtils]: For program point L15-3(lines 15 18) no Hoare annotation was computed. [2021-01-06 17:46:25,763 INFO L189 CegarLoopUtils]: For program point L11(lines 11 13) no Hoare annotation was computed. [2021-01-06 17:46:25,763 INFO L189 CegarLoopUtils]: For program point L11-1(lines 11 13) no Hoare annotation was computed. [2021-01-06 17:46:25,763 INFO L192 CegarLoopUtils]: At program point L15-5(lines 14 20) the Hoare annotation is: true [2021-01-06 17:46:25,763 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2021-01-06 17:46:25,763 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-01-06 17:46:25,763 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-01-06 17:46:25,764 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-01-06 17:46:25,764 INFO L189 CegarLoopUtils]: For program point L16(lines 16 17) no Hoare annotation was computed. [2021-01-06 17:46:25,764 INFO L189 CegarLoopUtils]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2021-01-06 17:46:25,764 INFO L189 CegarLoopUtils]: For program point L12(line 12) no Hoare annotation was computed. [2021-01-06 17:46:25,764 INFO L189 CegarLoopUtils]: For program point L12-2(line 12) no Hoare annotation was computed. [2021-01-06 17:46:25,764 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-01-06 17:46:25,764 INFO L192 CegarLoopUtils]: At program point L46(lines 23 47) the Hoare annotation is: true [2021-01-06 17:46:25,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 05:46:25 BoogieIcfgContainer [2021-01-06 17:46:25,795 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 17:46:25,799 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 17:46:25,799 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 17:46:25,800 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 17:46:25,800 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:41:41" (3/4) ... [2021-01-06 17:46:25,804 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-01-06 17:46:25,818 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-01-06 17:46:25,818 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-01-06 17:46:25,818 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 17:46:25,819 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 17:46:25,870 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/nla-digbench-scaling/geo2-ll_valuebound20.c-witness.graphml [2021-01-06 17:46:25,870 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 17:46:25,872 INFO L168 Benchmark]: Toolchain (without parser) took 285512.37 ms. Allocated memory was 158.3 MB in the beginning and 197.1 MB in the end (delta: 38.8 MB). Free memory was 133.4 MB in the beginning and 125.8 MB in the end (delta: 7.6 MB). Peak memory consumption was 47.6 MB. Max. memory is 8.0 GB. [2021-01-06 17:46:25,873 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 158.3 MB. Free memory was 130.9 MB in the beginning and 130.8 MB in the end (delta: 162.7 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 17:46:25,873 INFO L168 Benchmark]: CACSL2BoogieTranslator took 293.49 ms. Allocated memory is still 158.3 MB. Free memory was 133.2 MB in the beginning and 123.3 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-01-06 17:46:25,874 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.60 ms. Allocated memory is still 158.3 MB. Free memory was 123.3 MB in the beginning and 122.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:46:25,875 INFO L168 Benchmark]: Boogie Preprocessor took 23.10 ms. Allocated memory is still 158.3 MB. Free memory was 122.0 MB in the beginning and 120.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:46:25,875 INFO L168 Benchmark]: RCFGBuilder took 452.90 ms. Allocated memory is still 158.3 MB. Free memory was 120.8 MB in the beginning and 108.2 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-01-06 17:46:25,876 INFO L168 Benchmark]: TraceAbstraction took 284620.39 ms. Allocated memory was 158.3 MB in the beginning and 197.1 MB in the end (delta: 38.8 MB). Free memory was 107.8 MB in the beginning and 128.4 MB in the end (delta: -20.6 MB). Peak memory consumption was 81.1 MB. Max. memory is 8.0 GB. [2021-01-06 17:46:25,877 INFO L168 Benchmark]: Witness Printer took 71.44 ms. Allocated memory is still 197.1 MB. Free memory was 128.4 MB in the beginning and 125.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 17:46:25,881 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 158.3 MB. Free memory was 130.9 MB in the beginning and 130.8 MB in the end (delta: 162.7 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 293.49 ms. Allocated memory is still 158.3 MB. Free memory was 133.2 MB in the beginning and 123.3 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 37.60 ms. Allocated memory is still 158.3 MB. Free memory was 123.3 MB in the beginning and 122.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 23.10 ms. Allocated memory is still 158.3 MB. Free memory was 122.0 MB in the beginning and 120.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 452.90 ms. Allocated memory is still 158.3 MB. Free memory was 120.8 MB in the beginning and 108.2 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 284620.39 ms. Allocated memory was 158.3 MB in the beginning and 197.1 MB in the end (delta: 38.8 MB). Free memory was 107.8 MB in the beginning and 128.4 MB in the end (delta: -20.6 MB). Peak memory consumption was 81.1 MB. Max. memory is 8.0 GB. * Witness Printer took 71.44 ms. Allocated memory is still 197.1 MB. Free memory was 128.4 MB in the beginning and 125.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: ((((0 <= z && x == 1) && z <= 20) && y == 1) || ((((((((0 <= z && y % z == 0) && (x + -1) % z == 0) && 1 == cond) && ((x + -1) / z + -1) % z == 0) && z <= 20) && y / z % z == 0) && z * (y / z) + (x + -1) / z == (x + -1) / z * z + 1) && !(z == 0))) || ((((0 <= z && 1 == cond) && z <= 20) && z == y) && x == z + 1) - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: (((((0 <= z && x == 1) && 1 == cond) && z <= 20) && y == 1) || (((((((((0 <= z && y % z == 0) && (x + -1) % z == 0) && 1 == cond) && ((x + -1) / z + -1) % z == 0) && z <= 20) && y / z % z == 0) && z * (y / z) + (x + -1) / z == (x + -1) / z * z + 1) && !(z == 0)) && z * y + x == z * x + 1)) || ((((0 <= z && 1 == cond) && z <= 20) && z == y) && x == z + 1) - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 215.3s, OverallIterations: 5, TraceHistogramMax: 4, AutomataDifference: 154.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 69.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 55 SDtfs, 77 SDslu, 116 SDs, 0 SdLazy, 174 SolverSat, 54 SolverUnsat, 6 SolverUnknown, 0 SolverNotchecked, 13.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 68 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 188.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=4, 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, 5 MinimizatonAttempts, 3 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 14 NumberOfFragments, 210 HoareAnnotationTreeSize, 4 FomulaSimplifications, 198 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 4 FomulaSimplificationsInter, 305 FormulaSimplificationTreeSizeReductionInter, 69.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 2.1s SatisfiabilityAnalysisTime, 57.2s InterpolantComputationTime, 63 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 58 ConstructedInterpolants, 2 QuantifiedInterpolants, 11927 SizeOfPredicates, 39 NumberOfNonLiveVariables, 308 ConjunctsInSsa, 110 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 6/24 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 proved your program to be correct! [MP z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process Received shutdown request...