/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/sqrt1-ll_unwindbound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 05:50:42,053 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 05:50:42,056 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 05:50:42,111 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 05:50:42,112 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 05:50:42,116 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 05:50:42,121 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 05:50:42,131 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 05:50:42,134 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 05:50:42,141 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 05:50:42,143 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 05:50:42,144 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 05:50:42,145 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 05:50:42,148 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 05:50:42,151 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 05:50:42,153 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 05:50:42,155 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 05:50:42,158 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 05:50:42,166 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 05:50:42,175 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 05:50:42,178 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 05:50:42,180 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 05:50:42,183 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 05:50:42,186 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 05:50:42,192 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 05:50:42,197 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 05:50:42,198 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 05:50:42,202 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 05:50:42,203 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 05:50:42,204 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 05:50:42,204 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 05:50:42,205 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 05:50:42,206 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 05:50:42,206 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 05:50:42,207 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 05:50:42,208 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 05:50:42,209 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 05:50:42,269 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 05:50:42,269 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 05:50:42,274 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 05:50:42,274 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 05:50:42,275 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 05:50:42,275 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 05:50:42,275 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 05:50:42,275 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 05:50:42,275 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 05:50:42,276 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 05:50:42,277 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 05:50:42,278 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 05:50:42,278 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 05:50:42,278 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 05:50:42,278 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 05:50:42,278 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 05:50:42,279 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 05:50:42,279 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:50:42,279 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 05:50:42,279 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 05:50:42,280 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 05:50:42,280 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 05:50:42,280 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 05:50:42,281 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 05:50:42,281 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 05:50:42,281 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 05:50:42,736 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 05:50:42,763 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 05:50:42,767 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 05:50:42,768 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 05:50:42,769 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 05:50:42,770 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound2.c [2020-12-22 05:50:42,861 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/801a0cf56/e750bd7f52c94f5e9562352e678f2061/FLAG18e0fb06b [2020-12-22 05:50:43,585 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 05:50:43,586 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound2.c [2020-12-22 05:50:43,594 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/801a0cf56/e750bd7f52c94f5e9562352e678f2061/FLAG18e0fb06b [2020-12-22 05:50:43,926 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/801a0cf56/e750bd7f52c94f5e9562352e678f2061 [2020-12-22 05:50:43,929 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 05:50:43,931 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 05:50:43,936 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 05:50:43,937 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 05:50:43,942 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 05:50:43,943 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:50:43" (1/1) ... [2020-12-22 05:50:43,944 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2248bb61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:50:43, skipping insertion in model container [2020-12-22 05:50:43,944 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:50:43" (1/1) ... [2020-12-22 05:50:43,953 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 05:50:43,970 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 05:50:44,137 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/sqrt1-ll_unwindbound2.c[520,533] [2020-12-22 05:50:44,156 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:50:44,167 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 05:50:44,182 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/sqrt1-ll_unwindbound2.c[520,533] [2020-12-22 05:50:44,190 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:50:44,207 INFO L208 MainTranslator]: Completed translation [2020-12-22 05:50:44,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:50:44 WrapperNode [2020-12-22 05:50:44,208 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 05:50:44,209 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 05:50:44,210 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 05:50:44,210 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 05:50:44,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:50:44" (1/1) ... [2020-12-22 05:50:44,227 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:50:44" (1/1) ... [2020-12-22 05:50:44,252 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 05:50:44,253 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 05:50:44,253 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 05:50:44,253 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 05:50:44,263 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:50:44" (1/1) ... [2020-12-22 05:50:44,263 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:50:44" (1/1) ... [2020-12-22 05:50:44,265 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:50:44" (1/1) ... [2020-12-22 05:50:44,266 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:50:44" (1/1) ... [2020-12-22 05:50:44,271 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:50:44" (1/1) ... [2020-12-22 05:50:44,276 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:50:44" (1/1) ... [2020-12-22 05:50:44,277 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:50:44" (1/1) ... [2020-12-22 05:50:44,280 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 05:50:44,281 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 05:50:44,281 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 05:50:44,282 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 05:50:44,283 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:50:44" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:50:44,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 05:50:44,386 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 05:50:44,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 05:50:44,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 05:50:44,681 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 05:50:44,682 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2020-12-22 05:50:44,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:50:44 BoogieIcfgContainer [2020-12-22 05:50:44,684 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 05:50:44,685 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 05:50:44,686 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 05:50:44,689 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 05:50:44,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 05:50:43" (1/3) ... [2020-12-22 05:50:44,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@156c39bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:50:44, skipping insertion in model container [2020-12-22 05:50:44,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:50:44" (2/3) ... [2020-12-22 05:50:44,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@156c39bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:50:44, skipping insertion in model container [2020-12-22 05:50:44,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:50:44" (3/3) ... [2020-12-22 05:50:44,693 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt1-ll_unwindbound2.c [2020-12-22 05:50:44,701 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 05:50:44,707 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-22 05:50:44,729 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-22 05:50:44,802 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 05:50:44,803 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 05:50:44,803 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 05:50:44,803 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 05:50:44,803 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 05:50:44,803 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 05:50:44,804 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 05:50:44,804 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 05:50:44,841 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-12-22 05:50:44,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-22 05:50:44,847 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:50:44,847 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-22 05:50:44,848 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:50:44,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:50:44,855 INFO L82 PathProgramCache]: Analyzing trace with hash 890922791, now seen corresponding path program 1 times [2020-12-22 05:50:44,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:50:44,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854055779] [2020-12-22 05:50:44,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:50:44,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:50:45,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:50:45,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854055779] [2020-12-22 05:50:45,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:50:45,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 05:50:45,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128355637] [2020-12-22 05:50:45,095 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 05:50:45,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:50:45,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 05:50:45,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 05:50:45,124 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2020-12-22 05:50:45,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:50:45,152 INFO L93 Difference]: Finished difference Result 62 states and 78 transitions. [2020-12-22 05:50:45,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 05:50:45,154 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-12-22 05:50:45,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:50:45,180 INFO L225 Difference]: With dead ends: 62 [2020-12-22 05:50:45,180 INFO L226 Difference]: Without dead ends: 28 [2020-12-22 05:50:45,184 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 05:50:45,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-12-22 05:50:45,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-12-22 05:50:45,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-22 05:50:45,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-12-22 05:50:45,234 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 6 [2020-12-22 05:50:45,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:50:45,234 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-12-22 05:50:45,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 05:50:45,235 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-12-22 05:50:45,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-22 05:50:45,235 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:50:45,236 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-22 05:50:45,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 05:50:45,236 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:50:45,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:50:45,237 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2020-12-22 05:50:45,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:50:45,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082018266] [2020-12-22 05:50:45,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:50:45,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:50:45,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:50:45,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082018266] [2020-12-22 05:50:45,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:50:45,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:50:45,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285804131] [2020-12-22 05:50:45,357 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:50:45,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:50:45,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:50:45,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:50:45,359 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 4 states. [2020-12-22 05:50:45,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:50:45,561 INFO L93 Difference]: Finished difference Result 55 states and 57 transitions. [2020-12-22 05:50:45,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:50:45,561 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-12-22 05:50:45,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:50:45,565 INFO L225 Difference]: With dead ends: 55 [2020-12-22 05:50:45,565 INFO L226 Difference]: Without dead ends: 51 [2020-12-22 05:50:45,567 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 05:50:45,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-12-22 05:50:45,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 38. [2020-12-22 05:50:45,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-12-22 05:50:45,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2020-12-22 05:50:45,592 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 6 [2020-12-22 05:50:45,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:50:45,592 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2020-12-22 05:50:45,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:50:45,593 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2020-12-22 05:50:45,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-22 05:50:45,593 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:50:45,594 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:50:45,594 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 05:50:45,594 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:50:45,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:50:45,595 INFO L82 PathProgramCache]: Analyzing trace with hash 179657965, now seen corresponding path program 1 times [2020-12-22 05:50:45,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:50:45,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509964086] [2020-12-22 05:50:45,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:50:45,614 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:50:45,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [133305908] [2020-12-22 05:50:45,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:50:45,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:50:45,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-22 05:50:45,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:50:45,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:50:45,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509964086] [2020-12-22 05:50:45,779 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:50:45,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133305908] [2020-12-22 05:50:45,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:50:45,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 05:50:45,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940826074] [2020-12-22 05:50:45,780 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:50:45,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:50:45,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:50:45,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:50:45,782 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 6 states. [2020-12-22 05:50:45,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:50:45,906 INFO L93 Difference]: Finished difference Result 54 states and 57 transitions. [2020-12-22 05:50:45,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:50:45,907 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2020-12-22 05:50:45,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:50:45,908 INFO L225 Difference]: With dead ends: 54 [2020-12-22 05:50:45,908 INFO L226 Difference]: Without dead ends: 39 [2020-12-22 05:50:45,909 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:50:45,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-12-22 05:50:45,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2020-12-22 05:50:45,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-12-22 05:50:45,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2020-12-22 05:50:45,917 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 8 [2020-12-22 05:50:45,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:50:45,917 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2020-12-22 05:50:45,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:50:45,918 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2020-12-22 05:50:45,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-22 05:50:45,918 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:50:45,918 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:50:46,132 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-22 05:50:46,133 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:50:46,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:50:46,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1265507748, now seen corresponding path program 1 times [2020-12-22 05:50:46,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:50:46,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249471930] [2020-12-22 05:50:46,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:50:46,151 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:50:46,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [106558148] [2020-12-22 05:50:46,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:50:46,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:50:46,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-22 05:50:46,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:50:46,350 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:50:46,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249471930] [2020-12-22 05:50:46,351 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:50:46,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106558148] [2020-12-22 05:50:46,351 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:50:46,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-22 05:50:46,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348864286] [2020-12-22 05:50:46,353 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:50:46,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:50:46,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:50:46,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:50:46,356 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand 5 states. [2020-12-22 05:50:46,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:50:46,478 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions. [2020-12-22 05:50:46,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:50:46,479 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-22 05:50:46,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:50:46,484 INFO L225 Difference]: With dead ends: 62 [2020-12-22 05:50:46,484 INFO L226 Difference]: Without dead ends: 58 [2020-12-22 05:50:46,487 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:50:46,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-12-22 05:50:46,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 46. [2020-12-22 05:50:46,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-12-22 05:50:46,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2020-12-22 05:50:46,508 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 14 [2020-12-22 05:50:46,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:50:46,509 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2020-12-22 05:50:46,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:50:46,509 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2020-12-22 05:50:46,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 05:50:46,511 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:50:46,511 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:50:46,725 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:50:46,726 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:50:46,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:50:46,727 INFO L82 PathProgramCache]: Analyzing trace with hash -677045505, now seen corresponding path program 1 times [2020-12-22 05:50:46,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:50:46,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032899861] [2020-12-22 05:50:46,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:50:46,742 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:50:46,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1830314731] [2020-12-22 05:50:46,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:50:46,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:50:46,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-22 05:50:46,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:50:46,876 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:50:46,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032899861] [2020-12-22 05:50:46,877 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:50:46,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830314731] [2020-12-22 05:50:46,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:50:46,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 05:50:46,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344110210] [2020-12-22 05:50:46,879 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:50:46,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:50:46,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:50:46,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:50:46,881 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand 7 states. [2020-12-22 05:50:47,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:50:47,028 INFO L93 Difference]: Finished difference Result 61 states and 64 transitions. [2020-12-22 05:50:47,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:50:47,029 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-12-22 05:50:47,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:50:47,030 INFO L225 Difference]: With dead ends: 61 [2020-12-22 05:50:47,030 INFO L226 Difference]: Without dead ends: 47 [2020-12-22 05:50:47,031 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:50:47,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-12-22 05:50:47,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2020-12-22 05:50:47,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-12-22 05:50:47,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2020-12-22 05:50:47,038 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 16 [2020-12-22 05:50:47,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:50:47,038 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2020-12-22 05:50:47,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:50:47,038 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2020-12-22 05:50:47,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 05:50:47,039 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:50:47,039 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2020-12-22 05:50:47,243 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:50:47,244 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:50:47,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:50:47,246 INFO L82 PathProgramCache]: Analyzing trace with hash 1785416430, now seen corresponding path program 2 times [2020-12-22 05:50:47,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:50:47,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143431167] [2020-12-22 05:50:47,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:50:47,264 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:50:47,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1833715037] [2020-12-22 05:50:47,265 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:50:47,325 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:50:47,326 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:50:47,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 05:50:47,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:50:47,414 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:50:47,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143431167] [2020-12-22 05:50:47,414 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:50:47,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833715037] [2020-12-22 05:50:47,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:50:47,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-22 05:50:47,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921077696] [2020-12-22 05:50:47,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:50:47,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:50:47,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:50:47,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:50:47,417 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand 6 states. [2020-12-22 05:50:47,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:50:47,450 INFO L93 Difference]: Finished difference Result 58 states and 59 transitions. [2020-12-22 05:50:47,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:50:47,451 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-12-22 05:50:47,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:50:47,454 INFO L225 Difference]: With dead ends: 58 [2020-12-22 05:50:47,454 INFO L226 Difference]: Without dead ends: 32 [2020-12-22 05:50:47,455 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:50:47,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-12-22 05:50:47,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-12-22 05:50:47,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-12-22 05:50:47,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 31 transitions. [2020-12-22 05:50:47,470 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 31 transitions. Word has length 22 [2020-12-22 05:50:47,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:50:47,470 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 31 transitions. [2020-12-22 05:50:47,470 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:50:47,470 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 31 transitions. [2020-12-22 05:50:47,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-22 05:50:47,472 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:50:47,473 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-22 05:50:47,686 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:50:47,687 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:50:47,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:50:47,688 INFO L82 PathProgramCache]: Analyzing trace with hash -486687315, now seen corresponding path program 1 times [2020-12-22 05:50:47,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:50:47,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943907351] [2020-12-22 05:50:47,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:50:47,706 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:50:47,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [264726471] [2020-12-22 05:50:47,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:50:47,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:50:47,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-22 05:50:47,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:50:47,815 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 05:50:47,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943907351] [2020-12-22 05:50:47,816 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:50:47,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264726471] [2020-12-22 05:50:47,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:50:47,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-22 05:50:47,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645594581] [2020-12-22 05:50:47,817 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:50:47,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:50:47,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:50:47,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:50:47,818 INFO L87 Difference]: Start difference. First operand 32 states and 31 transitions. Second operand 6 states. [2020-12-22 05:50:47,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:50:47,891 INFO L93 Difference]: Finished difference Result 32 states and 31 transitions. [2020-12-22 05:50:47,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 05:50:47,892 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-12-22 05:50:47,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:50:47,893 INFO L225 Difference]: With dead ends: 32 [2020-12-22 05:50:47,893 INFO L226 Difference]: Without dead ends: 30 [2020-12-22 05:50:47,893 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:50:47,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-12-22 05:50:47,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-12-22 05:50:47,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-12-22 05:50:47,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 29 transitions. [2020-12-22 05:50:47,898 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 29 transitions. Word has length 23 [2020-12-22 05:50:47,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:50:47,899 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 29 transitions. [2020-12-22 05:50:47,899 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:50:47,899 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 29 transitions. [2020-12-22 05:50:47,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-22 05:50:47,900 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:50:47,900 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:50:48,113 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-22 05:50:48,114 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:50:48,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:50:48,115 INFO L82 PathProgramCache]: Analyzing trace with hash 445082416, now seen corresponding path program 1 times [2020-12-22 05:50:48,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:50:48,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694744673] [2020-12-22 05:50:48,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:50:48,128 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:50:48,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [459278563] [2020-12-22 05:50:48,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:50:48,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:50:48,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-22 05:50:48,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:50:48,272 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 05:50:48,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694744673] [2020-12-22 05:50:48,273 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:50:48,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459278563] [2020-12-22 05:50:48,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:50:48,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 05:50:48,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201732117] [2020-12-22 05:50:48,274 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:50:48,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:50:48,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:50:48,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:50:48,275 INFO L87 Difference]: Start difference. First operand 30 states and 29 transitions. Second operand 7 states. [2020-12-22 05:50:48,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:50:48,349 INFO L93 Difference]: Finished difference Result 30 states and 29 transitions. [2020-12-22 05:50:48,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 05:50:48,349 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-12-22 05:50:48,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:50:48,350 INFO L225 Difference]: With dead ends: 30 [2020-12-22 05:50:48,350 INFO L226 Difference]: Without dead ends: 28 [2020-12-22 05:50:48,350 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:50:48,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-12-22 05:50:48,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-12-22 05:50:48,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-22 05:50:48,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 27 transitions. [2020-12-22 05:50:48,355 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 27 transitions. Word has length 25 [2020-12-22 05:50:48,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:50:48,355 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 27 transitions. [2020-12-22 05:50:48,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:50:48,356 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 27 transitions. [2020-12-22 05:50:48,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-22 05:50:48,356 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:50:48,357 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:50:48,571 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:50:48,572 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:50:48,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:50:48,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1772370605, now seen corresponding path program 1 times [2020-12-22 05:50:48,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:50:48,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760375851] [2020-12-22 05:50:48,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:50:48,595 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:50:48,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2059783487] [2020-12-22 05:50:48,595 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 05:50:48,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:50:48,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-22 05:50:48,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:50:48,789 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 05:50:48,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760375851] [2020-12-22 05:50:48,790 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:50:48,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059783487] [2020-12-22 05:50:48,790 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:50:48,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 05:50:48,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013319857] [2020-12-22 05:50:48,791 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:50:48,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:50:48,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:50:48,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:50:48,792 INFO L87 Difference]: Start difference. First operand 28 states and 27 transitions. Second operand 8 states. [2020-12-22 05:50:48,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:50:48,892 INFO L93 Difference]: Finished difference Result 28 states and 27 transitions. [2020-12-22 05:50:48,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 05:50:48,892 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2020-12-22 05:50:48,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:50:48,893 INFO L225 Difference]: With dead ends: 28 [2020-12-22 05:50:48,893 INFO L226 Difference]: Without dead ends: 0 [2020-12-22 05:50:48,894 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-12-22 05:50:48,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-22 05:50:48,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-22 05:50:48,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-22 05:50:48,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-22 05:50:48,895 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2020-12-22 05:50:48,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:50:48,895 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-22 05:50:48,895 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:50:48,896 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-22 05:50:48,896 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-22 05:50:49,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:50:49,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-22 05:50:49,504 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-22 05:50:49,504 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-22 05:50:49,505 INFO L192 CegarLoopUtils]: At program point L48(lines 21 49) the Hoare annotation is: true [2020-12-22 05:50:49,505 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-22 05:50:49,505 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-22 05:50:49,505 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-22 05:50:49,505 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-22 05:50:49,505 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-22 05:50:49,505 INFO L189 CegarLoopUtils]: For program point L12(lines 12 15) no Hoare annotation was computed. [2020-12-22 05:50:49,506 INFO L185 CegarLoopUtils]: At program point L12-2(lines 11 17) the Hoare annotation is: (let ((.cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond))) (or (and (= ULTIMATE.start_main_~a~0 1) .cse0 (= ULTIMATE.start_main_~t~0 3) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 1)) (<= 2 ~counter~0)) (and (<= 1 ~counter~0) .cse0 (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~a~0 0) (= ULTIMATE.start_main_~t~0 1)))) [2020-12-22 05:50:49,506 INFO L189 CegarLoopUtils]: For program point L12-3(lines 12 15) no Hoare annotation was computed. [2020-12-22 05:50:49,506 INFO L185 CegarLoopUtils]: At program point L12-5(lines 11 17) the Hoare annotation is: (let ((.cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond))) (or (and (= ULTIMATE.start_main_~a~0 1) .cse0 (= ULTIMATE.start_main_~t~0 3) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 1)) (<= 2 ~counter~0)) (and (<= 1 ~counter~0) .cse0 (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~a~0 0) (= ULTIMATE.start_main_~t~0 1)))) [2020-12-22 05:50:49,506 INFO L189 CegarLoopUtils]: For program point L12-6(lines 12 15) no Hoare annotation was computed. [2020-12-22 05:50:49,506 INFO L185 CegarLoopUtils]: At program point L12-8(lines 36 37) the Hoare annotation is: (let ((.cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond))) (or (and (= ULTIMATE.start_main_~a~0 1) .cse0 (= ULTIMATE.start_main_~t~0 3) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 1)) (<= 2 ~counter~0)) (and (<= 1 ~counter~0) .cse0 (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~a~0 0) (= ULTIMATE.start_main_~t~0 1)))) [2020-12-22 05:50:49,507 INFO L189 CegarLoopUtils]: For program point L12-9(lines 12 15) no Hoare annotation was computed. [2020-12-22 05:50:49,507 INFO L185 CegarLoopUtils]: At program point L12-11(lines 11 17) the Hoare annotation is: (let ((.cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond))) (or (and (= ULTIMATE.start_main_~a~0 1) .cse0 (= ULTIMATE.start_main_~t~0 3) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 1))) (and .cse0 (= ULTIMATE.start_main_~a~0 2) (<= 2 ~counter~0) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 4)) (= ULTIMATE.start_main_~s~0 9)) (and .cse0 (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~a~0 0) (= ULTIMATE.start_main_~t~0 1)))) [2020-12-22 05:50:49,507 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-22 05:50:49,507 INFO L189 CegarLoopUtils]: For program point L12-12(lines 12 15) no Hoare annotation was computed. [2020-12-22 05:50:49,508 INFO L185 CegarLoopUtils]: At program point L12-14(lines 11 17) the Hoare annotation is: (let ((.cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond))) (or (and (= ULTIMATE.start_main_~a~0 1) .cse0 (= ULTIMATE.start_main_~t~0 3) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 1))) (and .cse0 (= ULTIMATE.start_main_~a~0 2) (<= 2 ~counter~0) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 4)) (= ULTIMATE.start_main_~s~0 9)) (and .cse0 (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~a~0 0) (= ULTIMATE.start_main_~t~0 1)))) [2020-12-22 05:50:49,508 INFO L189 CegarLoopUtils]: For program point L12-15(lines 12 15) no Hoare annotation was computed. [2020-12-22 05:50:49,508 INFO L192 CegarLoopUtils]: At program point L12-17(lines 11 17) the Hoare annotation is: true [2020-12-22 05:50:49,508 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-22 05:50:49,508 INFO L189 CegarLoopUtils]: For program point L13(lines 13 14) no Hoare annotation was computed. [2020-12-22 05:50:49,508 INFO L189 CegarLoopUtils]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2020-12-22 05:50:49,508 INFO L189 CegarLoopUtils]: For program point L13-2(lines 13 14) no Hoare annotation was computed. [2020-12-22 05:50:49,508 INFO L189 CegarLoopUtils]: For program point L13-3(lines 13 14) no Hoare annotation was computed. [2020-12-22 05:50:49,509 INFO L189 CegarLoopUtils]: For program point L13-4(lines 13 14) no Hoare annotation was computed. [2020-12-22 05:50:49,509 INFO L189 CegarLoopUtils]: For program point L13-5(lines 13 14) no Hoare annotation was computed. [2020-12-22 05:50:49,509 INFO L189 CegarLoopUtils]: For program point L30-1(lines 30 42) no Hoare annotation was computed. [2020-12-22 05:50:49,511 INFO L185 CegarLoopUtils]: At program point L30-3(lines 30 42) the Hoare annotation is: (let ((.cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond))) (or (and (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~a~0 0) (= ULTIMATE.start_main_~t~0 1) (<= 0 ~counter~0)) (and (<= 1 ~counter~0) (= ULTIMATE.start_main_~a~0 1) .cse0 (= ULTIMATE.start_main_~t~0 3) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 1))) (and .cse0 (= ULTIMATE.start_main_~a~0 2) (<= 2 ~counter~0) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 4)) (= ULTIMATE.start_main_~s~0 9)))) [2020-12-22 05:50:49,512 INFO L189 CegarLoopUtils]: For program point L30-4(lines 30 42) no Hoare annotation was computed. [2020-12-22 05:50:49,512 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-22 05:50:49,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 05:50:49 BoogieIcfgContainer [2020-12-22 05:50:49,563 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 05:50:49,563 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 05:50:49,564 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 05:50:49,564 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 05:50:49,568 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:50:44" (3/4) ... [2020-12-22 05:50:49,576 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-22 05:50:49,593 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-12-22 05:50:49,593 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-22 05:50:49,594 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 05:50:49,594 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 05:50:49,679 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/nla-digbench-scaling/sqrt1-ll_unwindbound2.c-witness.graphml [2020-12-22 05:50:49,680 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 05:50:49,684 INFO L168 Benchmark]: Toolchain (without parser) took 5749.97 ms. Allocated memory was 162.5 MB in the beginning and 195.0 MB in the end (delta: 32.5 MB). Free memory was 138.8 MB in the beginning and 81.8 MB in the end (delta: 57.1 MB). Peak memory consumption was 90.3 MB. Max. memory is 8.0 GB. [2020-12-22 05:50:49,684 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 162.5 MB. Free memory is still 141.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 05:50:49,685 INFO L168 Benchmark]: CACSL2BoogieTranslator took 271.90 ms. Allocated memory is still 162.5 MB. Free memory was 138.6 MB in the beginning and 128.8 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-22 05:50:49,688 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.74 ms. Allocated memory is still 162.5 MB. Free memory was 128.8 MB in the beginning and 127.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 05:50:49,688 INFO L168 Benchmark]: Boogie Preprocessor took 27.62 ms. Allocated memory is still 162.5 MB. Free memory was 127.3 MB in the beginning and 126.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 05:50:49,689 INFO L168 Benchmark]: RCFGBuilder took 402.55 ms. Allocated memory is still 162.5 MB. Free memory was 126.0 MB in the beginning and 111.3 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-12-22 05:50:49,689 INFO L168 Benchmark]: TraceAbstraction took 4877.44 ms. Allocated memory was 162.5 MB in the beginning and 195.0 MB in the end (delta: 32.5 MB). Free memory was 110.8 MB in the beginning and 84.9 MB in the end (delta: 25.9 MB). Peak memory consumption was 59.9 MB. Max. memory is 8.0 GB. [2020-12-22 05:50:49,690 INFO L168 Benchmark]: Witness Printer took 116.21 ms. Allocated memory is still 195.0 MB. Free memory was 84.4 MB in the beginning and 81.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 05:50:49,692 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 162.5 MB. Free memory is still 141.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 271.90 ms. Allocated memory is still 162.5 MB. Free memory was 138.6 MB in the beginning and 128.8 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 42.74 ms. Allocated memory is still 162.5 MB. Free memory was 128.8 MB in the beginning and 127.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 27.62 ms. Allocated memory is still 162.5 MB. Free memory was 127.3 MB in the beginning and 126.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 402.55 ms. Allocated memory is still 162.5 MB. Free memory was 126.0 MB in the beginning and 111.3 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4877.44 ms. Allocated memory was 162.5 MB in the beginning and 195.0 MB in the end (delta: 32.5 MB). Free memory was 110.8 MB in the beginning and 84.9 MB in the end (delta: 25.9 MB). Peak memory consumption was 59.9 MB. Max. memory is 8.0 GB. * Witness Printer took 116.21 ms. Allocated memory is still 195.0 MB. Free memory was 84.4 MB in the beginning and 81.8 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: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: 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 6 specifications checked. All of them hold - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((((a == 1 && 1 == cond) && t == 3) && s == t + 1) && 2 <= counter) || ((((1 <= counter && 1 == cond) && s == 1) && a == 0) && t == 1) - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: ((((s == 1 && a == 0) && t == 1) && 0 <= counter) || ((((1 <= counter && a == 1) && 1 == cond) && t == 3) && s == t + 1)) || ((((1 == cond && a == 2) && 2 <= counter) && s == t + 4) && s == 9) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((((a == 1 && 1 == cond) && t == 3) && s == t + 1) || ((((1 == cond && a == 2) && 2 <= counter) && s == t + 4) && s == 9)) || (((1 == cond && s == 1) && a == 0) && t == 1) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((((a == 1 && 1 == cond) && t == 3) && s == t + 1) && 2 <= counter) || ((((1 <= counter && 1 == cond) && s == 1) && a == 0) && t == 1) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((((a == 1 && 1 == cond) && t == 3) && s == t + 1) || ((((1 == cond && a == 2) && 2 <= counter) && s == t + 4) && s == 9)) || (((1 == cond && s == 1) && a == 0) && t == 1) - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: ((((a == 1 && 1 == cond) && t == 3) && s == t + 1) && 2 <= counter) || ((((1 <= counter && 1 == cond) && s == 1) && a == 0) && t == 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.3s, OverallIterations: 9, TraceHistogramMax: 3, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 174 SDtfs, 184 SDslu, 271 SDs, 0 SdLazy, 389 SolverSat, 106 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 149 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred 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: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 31 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 25 NumberOfFragments, 251 HoareAnnotationTreeSize, 8 FomulaSimplifications, 265 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 119 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 147 NumberOfCodeBlocks, 147 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 138 ConstructedInterpolants, 0 QuantifiedInterpolants, 18829 SizeOfPredicates, 32 NumberOfNonLiveVariables, 680 ConjunctsInSsa, 132 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 12/58 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...