/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_unwindbound100.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 05:50:40,137 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 05:50:40,140 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 05:50:40,179 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 05:50:40,180 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 05:50:40,181 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 05:50:40,183 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 05:50:40,185 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 05:50:40,187 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 05:50:40,188 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 05:50:40,189 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 05:50:40,191 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 05:50:40,191 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 05:50:40,192 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 05:50:40,194 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 05:50:40,195 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 05:50:40,196 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 05:50:40,197 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 05:50:40,210 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 05:50:40,212 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 05:50:40,214 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 05:50:40,219 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 05:50:40,220 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 05:50:40,221 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 05:50:40,226 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 05:50:40,233 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 05:50:40,234 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 05:50:40,235 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 05:50:40,236 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 05:50:40,237 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 05:50:40,238 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 05:50:40,238 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 05:50:40,239 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 05:50:40,239 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 05:50:40,240 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 05:50:40,240 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 05:50:40,241 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 05:50:40,266 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 05:50:40,266 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 05:50:40,268 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 05:50:40,268 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 05:50:40,268 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 05:50:40,268 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 05:50:40,269 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 05:50:40,269 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 05:50:40,269 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 05:50:40,269 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 05:50:40,269 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 05:50:40,270 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 05:50:40,270 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 05:50:40,270 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 05:50:40,270 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 05:50:40,270 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 05:50:40,271 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 05:50:40,271 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:50:40,271 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 05:50:40,271 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 05:50:40,271 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 05:50:40,272 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 05:50:40,272 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 05:50:40,272 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 05:50:40,272 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 05:50:40,272 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 05:50:40,668 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 05:50:40,701 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 05:50:40,705 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 05:50:40,706 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 05:50:40,707 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 05:50:40,707 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound100.c [2020-12-22 05:50:40,792 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/723ba6b5b/c87b08e2a20d4968b0667f11ee94eb97/FLAG164d84302 [2020-12-22 05:50:41,352 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 05:50:41,353 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound100.c [2020-12-22 05:50:41,360 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/723ba6b5b/c87b08e2a20d4968b0667f11ee94eb97/FLAG164d84302 [2020-12-22 05:50:41,801 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/723ba6b5b/c87b08e2a20d4968b0667f11ee94eb97 [2020-12-22 05:50:41,805 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 05:50:41,807 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 05:50:41,810 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 05:50:41,810 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 05:50:41,814 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 05:50:41,815 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:50:41" (1/1) ... [2020-12-22 05:50:41,817 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f6c9c32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:50:41, skipping insertion in model container [2020-12-22 05:50:41,817 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:50:41" (1/1) ... [2020-12-22 05:50:41,826 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 05:50:41,847 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 05:50:42,050 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_unwindbound100.c[520,533] [2020-12-22 05:50:42,072 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:50:42,082 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 05:50:42,095 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_unwindbound100.c[520,533] [2020-12-22 05:50:42,102 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:50:42,122 INFO L208 MainTranslator]: Completed translation [2020-12-22 05:50:42,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:50:42 WrapperNode [2020-12-22 05:50:42,123 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 05:50:42,127 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 05:50:42,127 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 05:50:42,128 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 05:50:42,138 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:50:42" (1/1) ... [2020-12-22 05:50:42,147 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:50:42" (1/1) ... [2020-12-22 05:50:42,176 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 05:50:42,177 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 05:50:42,177 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 05:50:42,178 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 05:50:42,185 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:50:42" (1/1) ... [2020-12-22 05:50:42,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:50:42" (1/1) ... [2020-12-22 05:50:42,187 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:50:42" (1/1) ... [2020-12-22 05:50:42,187 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:50:42" (1/1) ... [2020-12-22 05:50:42,191 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:50:42" (1/1) ... [2020-12-22 05:50:42,195 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:50:42" (1/1) ... [2020-12-22 05:50:42,197 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:50:42" (1/1) ... [2020-12-22 05:50:42,199 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 05:50:42,200 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 05:50:42,200 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 05:50:42,200 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 05:50:42,201 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:50:42" (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 05:50:42,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 05:50:42,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 05:50:42,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 05:50:42,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 05:50:42,554 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 05:50:42,554 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2020-12-22 05:50:42,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:50:42 BoogieIcfgContainer [2020-12-22 05:50:42,556 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 05:50:42,589 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 05:50:42,589 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 05:50:42,596 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 05:50:42,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 05:50:41" (1/3) ... [2020-12-22 05:50:42,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35ef8501 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:50:42, skipping insertion in model container [2020-12-22 05:50:42,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:50:42" (2/3) ... [2020-12-22 05:50:42,603 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35ef8501 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:50:42, skipping insertion in model container [2020-12-22 05:50:42,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:50:42" (3/3) ... [2020-12-22 05:50:42,605 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt1-ll_unwindbound100.c [2020-12-22 05:50:42,614 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 05:50:42,623 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-22 05:50:42,667 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-22 05:50:42,701 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 05:50:42,702 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 05:50:42,702 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 05:50:42,702 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 05:50:42,702 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 05:50:42,702 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 05:50:42,703 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 05:50:42,703 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 05:50:42,731 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-12-22 05:50:42,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-22 05:50:42,740 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:50:42,746 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-22 05:50:42,746 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 05:50:42,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:50:42,759 INFO L82 PathProgramCache]: Analyzing trace with hash 890922791, now seen corresponding path program 1 times [2020-12-22 05:50:42,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:50:42,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355555456] [2020-12-22 05:50:42,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:50:42,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:50:42,975 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 05:50:42,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355555456] [2020-12-22 05:50:42,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:50:42,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 05:50:42,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473896759] [2020-12-22 05:50:42,985 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 05:50:42,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:50:43,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 05:50:43,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 05:50:43,009 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2020-12-22 05:50:43,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:50:43,032 INFO L93 Difference]: Finished difference Result 62 states and 78 transitions. [2020-12-22 05:50:43,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 05:50:43,034 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-12-22 05:50:43,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:50:43,046 INFO L225 Difference]: With dead ends: 62 [2020-12-22 05:50:43,046 INFO L226 Difference]: Without dead ends: 28 [2020-12-22 05:50:43,051 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 05:50:43,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-12-22 05:50:43,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-12-22 05:50:43,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-22 05:50:43,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-12-22 05:50:43,095 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 6 [2020-12-22 05:50:43,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:50:43,096 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-12-22 05:50:43,096 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 05:50:43,096 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-12-22 05:50:43,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-22 05:50:43,097 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:50:43,097 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-22 05:50:43,098 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 05:50:43,099 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 05:50:43,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:50:43,103 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2020-12-22 05:50:43,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:50:43,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023968982] [2020-12-22 05:50:43,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:50:43,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:50:43,281 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 05:50:43,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023968982] [2020-12-22 05:50:43,282 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:50:43,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:50:43,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80895439] [2020-12-22 05:50:43,285 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:50:43,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:50:43,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:50:43,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:50:43,289 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 4 states. [2020-12-22 05:50:43,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:50:43,447 INFO L93 Difference]: Finished difference Result 55 states and 57 transitions. [2020-12-22 05:50:43,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:50:43,448 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-12-22 05:50:43,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:50:43,451 INFO L225 Difference]: With dead ends: 55 [2020-12-22 05:50:43,451 INFO L226 Difference]: Without dead ends: 51 [2020-12-22 05:50:43,452 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 05:50:43,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-12-22 05:50:43,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 38. [2020-12-22 05:50:43,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-12-22 05:50:43,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2020-12-22 05:50:43,462 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 6 [2020-12-22 05:50:43,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:50:43,462 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2020-12-22 05:50:43,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:50:43,463 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2020-12-22 05:50:43,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-22 05:50:43,463 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:50:43,463 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:50:43,464 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 05:50:43,464 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 05:50:43,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:50:43,465 INFO L82 PathProgramCache]: Analyzing trace with hash 179657965, now seen corresponding path program 1 times [2020-12-22 05:50:43,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:50:43,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037808544] [2020-12-22 05:50:43,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:50:43,478 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:50:43,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1581682233] [2020-12-22 05:50:43,479 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 05:50:43,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:50:43,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-22 05:50:43,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:50:43,639 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 05:50:43,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037808544] [2020-12-22 05:50:43,640 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:50:43,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581682233] [2020-12-22 05:50:43,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:50:43,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 05:50:43,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528917273] [2020-12-22 05:50:43,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:50:43,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:50:43,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:50:43,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:50:43,642 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 6 states. [2020-12-22 05:50:43,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:50:43,727 INFO L93 Difference]: Finished difference Result 54 states and 57 transitions. [2020-12-22 05:50:43,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:50:43,728 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2020-12-22 05:50:43,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:50:43,729 INFO L225 Difference]: With dead ends: 54 [2020-12-22 05:50:43,729 INFO L226 Difference]: Without dead ends: 39 [2020-12-22 05:50:43,730 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 05:50:43,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-12-22 05:50:43,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2020-12-22 05:50:43,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-12-22 05:50:43,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2020-12-22 05:50:43,738 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 8 [2020-12-22 05:50:43,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:50:43,739 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2020-12-22 05:50:43,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:50:43,739 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2020-12-22 05:50:43,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-22 05:50:43,740 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:50:43,740 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:50:43,953 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-22 05:50:43,954 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 05:50:43,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:50:43,956 INFO L82 PathProgramCache]: Analyzing trace with hash -1265507748, now seen corresponding path program 1 times [2020-12-22 05:50:43,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:50:43,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907266317] [2020-12-22 05:50:43,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:50:43,971 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:50:43,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1679218242] [2020-12-22 05:50:43,972 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 05:50:44,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:50:44,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-22 05:50:44,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:50:44,168 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 05:50:44,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907266317] [2020-12-22 05:50:44,169 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:50:44,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679218242] [2020-12-22 05:50:44,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:50:44,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-22 05:50:44,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586796589] [2020-12-22 05:50:44,170 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:50:44,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:50:44,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:50:44,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:50:44,172 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand 5 states. [2020-12-22 05:50:44,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:50:44,295 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions. [2020-12-22 05:50:44,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:50:44,296 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-22 05:50:44,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:50:44,297 INFO L225 Difference]: With dead ends: 62 [2020-12-22 05:50:44,298 INFO L226 Difference]: Without dead ends: 58 [2020-12-22 05:50:44,298 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 05:50:44,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-12-22 05:50:44,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 46. [2020-12-22 05:50:44,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-12-22 05:50:44,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2020-12-22 05:50:44,309 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 14 [2020-12-22 05:50:44,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:50:44,310 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2020-12-22 05:50:44,310 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:50:44,310 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2020-12-22 05:50:44,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 05:50:44,311 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:50:44,311 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:50:44,525 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:50:44,526 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 05:50:44,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:50:44,528 INFO L82 PathProgramCache]: Analyzing trace with hash -677045505, now seen corresponding path program 1 times [2020-12-22 05:50:44,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:50:44,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933108045] [2020-12-22 05:50:44,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:50:44,541 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:50:44,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1136120890] [2020-12-22 05:50:44,542 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 05:50:44,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:50:44,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-22 05:50:44,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:50:44,698 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 05:50:44,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933108045] [2020-12-22 05:50:44,699 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:50:44,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136120890] [2020-12-22 05:50:44,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:50:44,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 05:50:44,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387746893] [2020-12-22 05:50:44,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:50:44,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:50:44,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:50:44,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:50:44,702 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand 7 states. [2020-12-22 05:50:44,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:50:44,861 INFO L93 Difference]: Finished difference Result 61 states and 64 transitions. [2020-12-22 05:50:44,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:50:44,862 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-12-22 05:50:44,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:50:44,863 INFO L225 Difference]: With dead ends: 61 [2020-12-22 05:50:44,863 INFO L226 Difference]: Without dead ends: 47 [2020-12-22 05:50:44,864 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 05:50:44,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-12-22 05:50:44,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2020-12-22 05:50:44,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-12-22 05:50:44,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2020-12-22 05:50:44,874 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 16 [2020-12-22 05:50:44,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:50:44,874 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2020-12-22 05:50:44,874 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:50:44,874 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2020-12-22 05:50:44,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 05:50:44,875 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:50:44,875 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2020-12-22 05:50:45,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:50:45,091 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 05:50:45,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:50:45,093 INFO L82 PathProgramCache]: Analyzing trace with hash 1785416430, now seen corresponding path program 2 times [2020-12-22 05:50:45,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:50:45,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969398798] [2020-12-22 05:50:45,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:50:45,105 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:50:45,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [301730325] [2020-12-22 05:50:45,106 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 05:50:45,171 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:50:45,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:50:45,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-22 05:50:45,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:50:45,271 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:50:45,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969398798] [2020-12-22 05:50:45,271 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:50:45,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301730325] [2020-12-22 05:50:45,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:50:45,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-22 05:50:45,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341241531] [2020-12-22 05:50:45,274 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:50:45,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:50:45,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:50:45,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:50:45,282 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand 6 states. [2020-12-22 05:50:45,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:50:45,409 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2020-12-22 05:50:45,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 05:50:45,409 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-12-22 05:50:45,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:50:45,413 INFO L225 Difference]: With dead ends: 70 [2020-12-22 05:50:45,413 INFO L226 Difference]: Without dead ends: 66 [2020-12-22 05:50:45,416 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 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 05:50:45,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-12-22 05:50:45,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2020-12-22 05:50:45,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-12-22 05:50:45,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2020-12-22 05:50:45,440 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 22 [2020-12-22 05:50:45,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:50:45,441 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2020-12-22 05:50:45,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:50:45,441 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2020-12-22 05:50:45,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-22 05:50:45,442 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:50:45,442 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2020-12-22 05:50:45,643 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:50:45,643 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 05:50:45,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:50:45,644 INFO L82 PathProgramCache]: Analyzing trace with hash 2093393681, now seen corresponding path program 2 times [2020-12-22 05:50:45,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:50:45,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062332828] [2020-12-22 05:50:45,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:50:45,655 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:50:45,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [335946769] [2020-12-22 05:50:45,656 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 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 05:50:45,714 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:50:45,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:50:45,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-22 05:50:45,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:50:45,832 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:50:45,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062332828] [2020-12-22 05:50:45,833 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:50:45,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [335946769] [2020-12-22 05:50:45,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:50:45,833 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 05:50:45,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968563617] [2020-12-22 05:50:45,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:50:45,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:50:45,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:50:45,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:50:45,835 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 7 states. [2020-12-22 05:50:45,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:50:45,991 INFO L93 Difference]: Finished difference Result 67 states and 69 transitions. [2020-12-22 05:50:45,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 05:50:45,992 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-12-22 05:50:45,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:50:45,993 INFO L225 Difference]: With dead ends: 67 [2020-12-22 05:50:45,993 INFO L226 Difference]: Without dead ends: 63 [2020-12-22 05:50:45,993 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:50:45,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-12-22 05:50:46,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 56. [2020-12-22 05:50:46,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-12-22 05:50:46,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2020-12-22 05:50:46,016 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 24 [2020-12-22 05:50:46,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:50:46,016 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2020-12-22 05:50:46,016 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:50:46,017 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2020-12-22 05:50:46,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-22 05:50:46,017 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:50:46,018 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2020-12-22 05:50:46,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-22 05:50:46,222 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 05:50:46,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:50:46,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1706788820, now seen corresponding path program 1 times [2020-12-22 05:50:46,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:50:46,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930405595] [2020-12-22 05:50:46,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:50:46,237 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:50:46,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [637203888] [2020-12-22 05:50:46,237 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 05:50:46,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:50:46,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-22 05:50:46,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:50:46,407 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:50:46,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930405595] [2020-12-22 05:50:46,408 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:50:46,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637203888] [2020-12-22 05:50:46,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:50:46,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 05:50:46,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536964905] [2020-12-22 05:50:46,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:50:46,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:50:46,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:50:46,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:50:46,410 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand 8 states. [2020-12-22 05:50:46,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:50:46,544 INFO L93 Difference]: Finished difference Result 65 states and 68 transitions. [2020-12-22 05:50:46,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 05:50:46,545 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2020-12-22 05:50:46,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:50:46,546 INFO L225 Difference]: With dead ends: 65 [2020-12-22 05:50:46,546 INFO L226 Difference]: Without dead ends: 55 [2020-12-22 05:50:46,547 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 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 05:50:46,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-12-22 05:50:46,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 52. [2020-12-22 05:50:46,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-12-22 05:50:46,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 53 transitions. [2020-12-22 05:50:46,554 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 53 transitions. Word has length 26 [2020-12-22 05:50:46,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:50:46,554 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 53 transitions. [2020-12-22 05:50:46,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:50:46,554 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 53 transitions. [2020-12-22 05:50:46,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-22 05:50:46,555 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:50:46,556 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1] [2020-12-22 05:50:46,768 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:50:46,769 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 05:50:46,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:50:46,771 INFO L82 PathProgramCache]: Analyzing trace with hash -1822162560, now seen corresponding path program 3 times [2020-12-22 05:50:46,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:50:46,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219033781] [2020-12-22 05:50:46,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:50:46,781 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:50:46,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1032621155] [2020-12-22 05:50:46,781 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 05:50:46,828 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-22 05:50:46,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:50:46,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-22 05:50:46,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:50:46,914 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-22 05:50:46,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219033781] [2020-12-22 05:50:46,916 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:50:46,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032621155] [2020-12-22 05:50:46,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:50:46,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-22 05:50:46,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506519802] [2020-12-22 05:50:46,919 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:50:46,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:50:46,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:50:46,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:50:46,921 INFO L87 Difference]: Start difference. First operand 52 states and 53 transitions. Second operand 5 states. [2020-12-22 05:50:46,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:50:46,977 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2020-12-22 05:50:46,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 05:50:46,977 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-12-22 05:50:46,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:50:46,981 INFO L225 Difference]: With dead ends: 52 [2020-12-22 05:50:46,981 INFO L226 Difference]: Without dead ends: 48 [2020-12-22 05:50:46,987 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:50:46,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-12-22 05:50:47,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-12-22 05:50:47,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-12-22 05:50:47,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2020-12-22 05:50:47,004 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 30 [2020-12-22 05:50:47,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:50:47,007 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2020-12-22 05:50:47,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:50:47,007 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2020-12-22 05:50:47,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-22 05:50:47,008 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:50:47,009 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1] [2020-12-22 05:50:47,209 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:50:47,210 INFO L429 AbstractCegarLoop]: === Iteration 10 === [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 05:50:47,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:50:47,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1248592163, now seen corresponding path program 3 times [2020-12-22 05:50:47,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:50:47,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998269392] [2020-12-22 05:50:47,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:50:47,223 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:50:47,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2066152266] [2020-12-22 05:50:47,224 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:50:47,289 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-22 05:50:47,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:50:47,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-22 05:50:47,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:50:47,412 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-22 05:50:47,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998269392] [2020-12-22 05:50:47,412 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:50:47,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2066152266] [2020-12-22 05:50:47,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:50:47,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 05:50:47,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257496706] [2020-12-22 05:50:47,414 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:50:47,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:50:47,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:50:47,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:50:47,415 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand 8 states. [2020-12-22 05:50:51,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:50:51,567 INFO L93 Difference]: Finished difference Result 48 states and 49 transitions. [2020-12-22 05:50:51,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 05:50:51,568 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2020-12-22 05:50:51,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:50:51,569 INFO L225 Difference]: With dead ends: 48 [2020-12-22 05:50:51,569 INFO L226 Difference]: Without dead ends: 0 [2020-12-22 05:50:51,569 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:50:51,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-22 05:50:51,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-22 05:50:51,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-22 05:50:51,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-22 05:50:51,570 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2020-12-22 05:50:51,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:50:51,570 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-22 05:50:51,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:50:51,571 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-22 05:50:51,571 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-22 05:50:51,771 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-22 05:50:51,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-22 05:50:52,126 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-22 05:50:52,126 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-22 05:50:52,126 INFO L192 CegarLoopUtils]: At program point L48(lines 21 49) the Hoare annotation is: true [2020-12-22 05:50:52,126 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-22 05:50:52,127 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-22 05:50:52,127 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-22 05:50:52,127 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-22 05:50:52,127 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-22 05:50:52,127 INFO L189 CegarLoopUtils]: For program point L12(lines 12 15) no Hoare annotation was computed. [2020-12-22 05:50:52,127 INFO L185 CegarLoopUtils]: At program point L12-2(lines 11 17) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~a~0 2))) (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ .cse0 1) ULTIMATE.start_main_~t~0) (= ULTIMATE.start_main_~s~0 (+ (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) .cse0 1)))) [2020-12-22 05:50:52,128 INFO L189 CegarLoopUtils]: For program point L12-3(lines 12 15) no Hoare annotation was computed. [2020-12-22 05:50:52,128 INFO L185 CegarLoopUtils]: At program point L12-5(lines 11 17) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~a~0 2))) (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ .cse0 1) ULTIMATE.start_main_~t~0) (= ULTIMATE.start_main_~s~0 (+ (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) .cse0 1)))) [2020-12-22 05:50:52,128 INFO L189 CegarLoopUtils]: For program point L12-6(lines 12 15) no Hoare annotation was computed. [2020-12-22 05:50:52,128 INFO L185 CegarLoopUtils]: At program point L12-8(lines 36 37) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~a~0 2))) (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ .cse0 1) ULTIMATE.start_main_~t~0) (= ULTIMATE.start_main_~s~0 (+ (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) .cse0 1)))) [2020-12-22 05:50:52,128 INFO L189 CegarLoopUtils]: For program point L12-9(lines 12 15) no Hoare annotation was computed. [2020-12-22 05:50:52,128 INFO L185 CegarLoopUtils]: At program point L12-11(lines 11 17) the Hoare annotation is: (or (and (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (= ULTIMATE.start_main_~a~0 2) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 4)) (= ULTIMATE.start_main_~s~0 9)) (let ((.cse0 (* ULTIMATE.start_main_~a~0 2))) (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ .cse0 1) ULTIMATE.start_main_~t~0) (= ULTIMATE.start_main_~s~0 (+ (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) .cse0 1))))) [2020-12-22 05:50:52,128 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-22 05:50:52,129 INFO L189 CegarLoopUtils]: For program point L12-12(lines 12 15) no Hoare annotation was computed. [2020-12-22 05:50:52,129 INFO L185 CegarLoopUtils]: At program point L12-14(lines 11 17) the Hoare annotation is: (or (and (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (= ULTIMATE.start_main_~t~0 5) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 4))) (let ((.cse0 (* ULTIMATE.start_main_~a~0 2))) (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ .cse0 1) ULTIMATE.start_main_~t~0) (= ULTIMATE.start_main_~s~0 (+ (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) .cse0 1))))) [2020-12-22 05:50:52,129 INFO L189 CegarLoopUtils]: For program point L12-15(lines 12 15) no Hoare annotation was computed. [2020-12-22 05:50:52,129 INFO L192 CegarLoopUtils]: At program point L12-17(lines 11 17) the Hoare annotation is: true [2020-12-22 05:50:52,129 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-22 05:50:52,129 INFO L189 CegarLoopUtils]: For program point L13(lines 13 14) no Hoare annotation was computed. [2020-12-22 05:50:52,129 INFO L189 CegarLoopUtils]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2020-12-22 05:50:52,133 INFO L189 CegarLoopUtils]: For program point L13-2(lines 13 14) no Hoare annotation was computed. [2020-12-22 05:50:52,134 INFO L189 CegarLoopUtils]: For program point L13-3(lines 13 14) no Hoare annotation was computed. [2020-12-22 05:50:52,134 INFO L189 CegarLoopUtils]: For program point L13-4(lines 13 14) no Hoare annotation was computed. [2020-12-22 05:50:52,134 INFO L189 CegarLoopUtils]: For program point L13-5(lines 13 14) no Hoare annotation was computed. [2020-12-22 05:50:52,134 INFO L189 CegarLoopUtils]: For program point L30-1(lines 30 42) no Hoare annotation was computed. [2020-12-22 05:50:52,134 INFO L185 CegarLoopUtils]: At program point L30-3(lines 30 42) the Hoare annotation is: (let ((.cse1 (* ULTIMATE.start_main_~a~0 2))) (let ((.cse0 (= ULTIMATE.start_main_~s~0 (+ (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) .cse1 1)))) (or (and (= ULTIMATE.start_main_~a~0 0) (= ULTIMATE.start_main_~t~0 1) .cse0) (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ .cse1 1) ULTIMATE.start_main_~t~0) .cse0)))) [2020-12-22 05:50:52,134 INFO L189 CegarLoopUtils]: For program point L30-4(lines 30 42) no Hoare annotation was computed. [2020-12-22 05:50:52,135 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-22 05:50:52,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 05:50:52 BoogieIcfgContainer [2020-12-22 05:50:52,156 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 05:50:52,157 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 05:50:52,157 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 05:50:52,157 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 05:50:52,158 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:50:42" (3/4) ... [2020-12-22 05:50:52,161 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-22 05:50:52,172 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-12-22 05:50:52,172 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-22 05:50:52,172 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 05:50:52,173 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 05:50:52,219 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/nla-digbench-scaling/sqrt1-ll_unwindbound100.c-witness.graphml [2020-12-22 05:50:52,219 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 05:50:52,224 INFO L168 Benchmark]: Toolchain (without parser) took 10413.58 ms. Allocated memory was 165.7 MB in the beginning and 215.0 MB in the end (delta: 49.3 MB). Free memory was 139.8 MB in the beginning and 166.8 MB in the end (delta: -27.0 MB). Peak memory consumption was 23.0 MB. Max. memory is 8.0 GB. [2020-12-22 05:50:52,224 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 165.7 MB. Free memory is still 138.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 05:50:52,225 INFO L168 Benchmark]: CACSL2BoogieTranslator took 316.22 ms. Allocated memory is still 165.7 MB. Free memory was 139.5 MB in the beginning and 129.7 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-22 05:50:52,225 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.28 ms. Allocated memory is still 165.7 MB. Free memory was 129.7 MB in the beginning and 128.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 05:50:52,226 INFO L168 Benchmark]: Boogie Preprocessor took 22.08 ms. Allocated memory is still 165.7 MB. Free memory was 128.3 MB in the beginning and 127.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 05:50:52,227 INFO L168 Benchmark]: RCFGBuilder took 356.22 ms. Allocated memory is still 165.7 MB. Free memory was 127.1 MB in the beginning and 112.7 MB in the end (delta: 14.4 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-12-22 05:50:52,232 INFO L168 Benchmark]: TraceAbstraction took 9567.63 ms. Allocated memory was 165.7 MB in the beginning and 215.0 MB in the end (delta: 49.3 MB). Free memory was 147.8 MB in the beginning and 169.9 MB in the end (delta: -22.1 MB). Peak memory consumption was 124.2 MB. Max. memory is 8.0 GB. [2020-12-22 05:50:52,233 INFO L168 Benchmark]: Witness Printer took 62.36 ms. Allocated memory is still 215.0 MB. Free memory was 169.9 MB in the beginning and 166.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-22 05:50:52,237 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 165.7 MB. Free memory is still 138.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 316.22 ms. Allocated memory is still 165.7 MB. Free memory was 139.5 MB in the beginning and 129.7 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 49.28 ms. Allocated memory is still 165.7 MB. Free memory was 129.7 MB in the beginning and 128.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 22.08 ms. Allocated memory is still 165.7 MB. Free memory was 128.3 MB in the beginning and 127.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 356.22 ms. Allocated memory is still 165.7 MB. Free memory was 127.1 MB in the beginning and 112.7 MB in the end (delta: 14.4 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 9567.63 ms. Allocated memory was 165.7 MB in the beginning and 215.0 MB in the end (delta: 49.3 MB). Free memory was 147.8 MB in the beginning and 169.9 MB in the end (delta: -22.1 MB). Peak memory consumption was 124.2 MB. Max. memory is 8.0 GB. * Witness Printer took 62.36 ms. Allocated memory is still 215.0 MB. Free memory was 169.9 MB in the beginning and 166.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 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: (1 == cond && a * 2 + 1 == t) && s == a * a + a * 2 + 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: ((a == 0 && t == 1) && s == a * a + a * 2 + 1) || ((1 == cond && a * 2 + 1 == t) && s == a * a + a * 2 + 1) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (((!(0 == cond) && a == 2) && s == t + 4) && s == 9) || ((1 == cond && a * 2 + 1 == t) && s == a * a + a * 2 + 1) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (1 == cond && a * 2 + 1 == t) && s == a * a + a * 2 + 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((!(0 == cond) && t == 5) && s == t + 4) || ((1 == cond && a * 2 + 1 == t) && s == a * a + a * 2 + 1) - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: (1 == cond && a * 2 + 1 == t) && s == a * a + a * 2 + 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 9.0s, OverallIterations: 10, TraceHistogramMax: 4, AutomataDifference: 5.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 205 SDtfs, 254 SDslu, 412 SDs, 0 SdLazy, 548 SolverSat, 157 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 4.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 189 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 53 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 34 NumberOfFragments, 177 HoareAnnotationTreeSize, 8 FomulaSimplifications, 1330 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 8 FomulaSimplificationsInter, 114 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 184 NumberOfCodeBlocks, 152 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 174 ConstructedInterpolants, 0 QuantifiedInterpolants, 25021 SizeOfPredicates, 43 NumberOfNonLiveVariables, 740 ConjunctsInSsa, 162 ConjunctsInUnsatCore, 10 InterpolantComputations, 3 PerfectInterpolantSequences, 68/134 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...