/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_unwindbound20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 05:50:47,051 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 05:50:47,056 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 05:50:47,115 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 05:50:47,116 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 05:50:47,120 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 05:50:47,123 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 05:50:47,131 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 05:50:47,134 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 05:50:47,141 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 05:50:47,142 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 05:50:47,144 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 05:50:47,144 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 05:50:47,148 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 05:50:47,150 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 05:50:47,151 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 05:50:47,152 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 05:50:47,156 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 05:50:47,174 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 05:50:47,182 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 05:50:47,184 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 05:50:47,186 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 05:50:47,187 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 05:50:47,189 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 05:50:47,197 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 05:50:47,202 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 05:50:47,203 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 05:50:47,205 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 05:50:47,206 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 05:50:47,207 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 05:50:47,207 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 05:50:47,208 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 05:50:47,208 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 05:50:47,209 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 05:50:47,209 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 05:50:47,210 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 05:50:47,215 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 05:50:47,265 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 05:50:47,266 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 05:50:47,270 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 05:50:47,270 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 05:50:47,270 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 05:50:47,270 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 05:50:47,271 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 05:50:47,271 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 05:50:47,271 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 05:50:47,271 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 05:50:47,272 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 05:50:47,273 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 05:50:47,273 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 05:50:47,273 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 05:50:47,273 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 05:50:47,274 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 05:50:47,274 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 05:50:47,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:50:47,274 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 05:50:47,274 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 05:50:47,275 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 05:50:47,275 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 05:50:47,275 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 05:50:47,276 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 05:50:47,276 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 05:50:47,276 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 05:50:47,710 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 05:50:47,739 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 05:50:47,742 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 05:50:47,743 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 05:50:47,744 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 05:50:47,745 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound20.c [2020-12-22 05:50:47,835 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4985e7e41/eed275ebabb3454cbb0523b8d299b4e2/FLAGfc7fef34b [2020-12-22 05:50:48,527 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 05:50:48,528 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound20.c [2020-12-22 05:50:48,538 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4985e7e41/eed275ebabb3454cbb0523b8d299b4e2/FLAGfc7fef34b [2020-12-22 05:50:48,904 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4985e7e41/eed275ebabb3454cbb0523b8d299b4e2 [2020-12-22 05:50:48,906 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 05:50:48,910 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 05:50:48,913 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 05:50:48,914 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 05:50:48,917 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 05:50:48,918 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:50:48" (1/1) ... [2020-12-22 05:50:48,920 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24879908 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:50:48, skipping insertion in model container [2020-12-22 05:50:48,920 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:50:48" (1/1) ... [2020-12-22 05:50:48,928 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 05:50:48,943 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 05:50:49,082 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_unwindbound20.c[520,533] [2020-12-22 05:50:49,100 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:50:49,111 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 05:50:49,126 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_unwindbound20.c[520,533] [2020-12-22 05:50:49,134 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:50:49,151 INFO L208 MainTranslator]: Completed translation [2020-12-22 05:50:49,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:50:49 WrapperNode [2020-12-22 05:50:49,152 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 05:50:49,153 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 05:50:49,153 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 05:50:49,153 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 05:50:49,162 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:50:49" (1/1) ... [2020-12-22 05:50:49,170 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:50:49" (1/1) ... [2020-12-22 05:50:49,193 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 05:50:49,194 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 05:50:49,195 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 05:50:49,195 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 05:50:49,204 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:50:49" (1/1) ... [2020-12-22 05:50:49,205 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:50:49" (1/1) ... [2020-12-22 05:50:49,207 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:50:49" (1/1) ... [2020-12-22 05:50:49,207 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:50:49" (1/1) ... [2020-12-22 05:50:49,211 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:50:49" (1/1) ... [2020-12-22 05:50:49,215 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:50:49" (1/1) ... [2020-12-22 05:50:49,217 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:50:49" (1/1) ... [2020-12-22 05:50:49,222 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 05:50:49,223 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 05:50:49,223 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 05:50:49,223 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 05:50:49,224 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:50:49" (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 05:50:49,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 05:50:49,340 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 05:50:49,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 05:50:49,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 05:50:49,865 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 05:50:49,866 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2020-12-22 05:50:49,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:50:49 BoogieIcfgContainer [2020-12-22 05:50:49,871 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 05:50:49,873 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 05:50:49,873 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 05:50:49,883 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 05:50:49,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 05:50:48" (1/3) ... [2020-12-22 05:50:49,884 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51c5ddba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:50:49, skipping insertion in model container [2020-12-22 05:50:49,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:50:49" (2/3) ... [2020-12-22 05:50:49,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51c5ddba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:50:49, skipping insertion in model container [2020-12-22 05:50:49,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:50:49" (3/3) ... [2020-12-22 05:50:49,908 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt1-ll_unwindbound20.c [2020-12-22 05:50:49,923 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 05:50:49,932 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-22 05:50:49,956 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-22 05:50:49,985 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 05:50:49,986 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 05:50:49,986 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 05:50:49,986 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 05:50:49,986 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 05:50:49,986 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 05:50:49,987 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 05:50:49,987 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 05:50:50,003 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-12-22 05:50:50,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-22 05:50:50,009 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:50:50,010 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-22 05:50:50,011 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 05:50:50,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:50:50,017 INFO L82 PathProgramCache]: Analyzing trace with hash 890922791, now seen corresponding path program 1 times [2020-12-22 05:50:50,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:50:50,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491848805] [2020-12-22 05:50:50,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:50:50,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:50:50,188 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 05:50:50,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491848805] [2020-12-22 05:50:50,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:50:50,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 05:50:50,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937850542] [2020-12-22 05:50:50,195 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 05:50:50,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:50:50,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 05:50:50,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 05:50:50,213 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2020-12-22 05:50:50,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:50:50,236 INFO L93 Difference]: Finished difference Result 62 states and 78 transitions. [2020-12-22 05:50:50,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 05:50:50,237 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-12-22 05:50:50,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:50:50,247 INFO L225 Difference]: With dead ends: 62 [2020-12-22 05:50:50,247 INFO L226 Difference]: Without dead ends: 28 [2020-12-22 05:50:50,251 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 05:50:50,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-12-22 05:50:50,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-12-22 05:50:50,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-22 05:50:50,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-12-22 05:50:50,289 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 6 [2020-12-22 05:50:50,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:50:50,289 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-12-22 05:50:50,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 05:50:50,290 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-12-22 05:50:50,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-22 05:50:50,290 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:50:50,290 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-22 05:50:50,291 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 05:50:50,291 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 05:50:50,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:50:50,292 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2020-12-22 05:50:50,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:50:50,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032727528] [2020-12-22 05:50:50,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:50:50,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:50:50,400 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 05:50:50,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032727528] [2020-12-22 05:50:50,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:50:50,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:50:50,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246665319] [2020-12-22 05:50:50,403 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:50:50,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:50:50,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:50:50,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:50:50,405 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 4 states. [2020-12-22 05:50:50,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:50:50,562 INFO L93 Difference]: Finished difference Result 55 states and 57 transitions. [2020-12-22 05:50:50,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:50:50,563 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-12-22 05:50:50,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:50:50,565 INFO L225 Difference]: With dead ends: 55 [2020-12-22 05:50:50,565 INFO L226 Difference]: Without dead ends: 51 [2020-12-22 05:50:50,566 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 05:50:50,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-12-22 05:50:50,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 38. [2020-12-22 05:50:50,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-12-22 05:50:50,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2020-12-22 05:50:50,577 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 6 [2020-12-22 05:50:50,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:50:50,577 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2020-12-22 05:50:50,577 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:50:50,578 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2020-12-22 05:50:50,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-22 05:50:50,578 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:50:50,578 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:50:50,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 05:50:50,579 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 05:50:50,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:50:50,580 INFO L82 PathProgramCache]: Analyzing trace with hash 179657965, now seen corresponding path program 1 times [2020-12-22 05:50:50,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:50:50,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669806974] [2020-12-22 05:50:50,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:50:50,598 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:50:50,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1001158182] [2020-12-22 05:50:50,599 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 05:50:50,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:50:50,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-22 05:50:50,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:50:50,859 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 05:50:50,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669806974] [2020-12-22 05:50:50,860 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:50:50,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001158182] [2020-12-22 05:50:50,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:50:50,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 05:50:50,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982935381] [2020-12-22 05:50:50,862 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:50:50,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:50:50,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:50:50,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:50:50,863 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 6 states. [2020-12-22 05:50:51,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:50:51,034 INFO L93 Difference]: Finished difference Result 54 states and 57 transitions. [2020-12-22 05:50:51,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:50:51,035 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2020-12-22 05:50:51,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:50:51,036 INFO L225 Difference]: With dead ends: 54 [2020-12-22 05:50:51,037 INFO L226 Difference]: Without dead ends: 39 [2020-12-22 05:50:51,038 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:50:51,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-12-22 05:50:51,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2020-12-22 05:50:51,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-12-22 05:50:51,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2020-12-22 05:50:51,046 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 8 [2020-12-22 05:50:51,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:50:51,047 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2020-12-22 05:50:51,047 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:50:51,047 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2020-12-22 05:50:51,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-22 05:50:51,048 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:50:51,048 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:50:51,261 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-22 05:50:51,262 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 05:50:51,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:50:51,264 INFO L82 PathProgramCache]: Analyzing trace with hash -1265507748, now seen corresponding path program 1 times [2020-12-22 05:50:51,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:50:51,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480680066] [2020-12-22 05:50:51,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:50:51,287 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:50:51,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [152575976] [2020-12-22 05:50:51,288 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 05:50:51,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:50:51,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-22 05:50:51,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:50:51,457 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 05:50:51,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480680066] [2020-12-22 05:50:51,457 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:50:51,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152575976] [2020-12-22 05:50:51,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:50:51,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-22 05:50:51,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009989569] [2020-12-22 05:50:51,459 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:50:51,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:50:51,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:50:51,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:50:51,460 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand 5 states. [2020-12-22 05:50:51,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:50:51,703 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions. [2020-12-22 05:50:51,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:50:51,704 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-22 05:50:51,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:50:51,706 INFO L225 Difference]: With dead ends: 62 [2020-12-22 05:50:51,706 INFO L226 Difference]: Without dead ends: 58 [2020-12-22 05:50:51,707 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 05:50:51,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-12-22 05:50:51,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 46. [2020-12-22 05:50:51,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-12-22 05:50:51,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2020-12-22 05:50:51,728 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 14 [2020-12-22 05:50:51,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:50:51,729 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2020-12-22 05:50:51,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:50:51,731 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2020-12-22 05:50:51,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 05:50:51,732 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:50:51,732 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:50:51,945 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:50:51,946 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 05:50:51,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:50:51,948 INFO L82 PathProgramCache]: Analyzing trace with hash -677045505, now seen corresponding path program 1 times [2020-12-22 05:50:51,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:50:51,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288073914] [2020-12-22 05:50:51,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:50:51,961 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:50:51,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2126715339] [2020-12-22 05:50:51,962 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 05:50:52,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:50:52,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-22 05:50:52,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:50:52,183 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 05:50:52,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288073914] [2020-12-22 05:50:52,184 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:50:52,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126715339] [2020-12-22 05:50:52,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:50:52,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 05:50:52,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466797064] [2020-12-22 05:50:52,185 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:50:52,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:50:52,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:50:52,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:50:52,186 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand 7 states. [2020-12-22 05:50:52,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:50:52,450 INFO L93 Difference]: Finished difference Result 61 states and 64 transitions. [2020-12-22 05:50:52,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:50:52,451 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-12-22 05:50:52,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:50:52,456 INFO L225 Difference]: With dead ends: 61 [2020-12-22 05:50:52,456 INFO L226 Difference]: Without dead ends: 47 [2020-12-22 05:50:52,459 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:50:52,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-12-22 05:50:52,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2020-12-22 05:50:52,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-12-22 05:50:52,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2020-12-22 05:50:52,481 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 16 [2020-12-22 05:50:52,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:50:52,482 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2020-12-22 05:50:52,482 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:50:52,482 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2020-12-22 05:50:52,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 05:50:52,486 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:50:52,486 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2020-12-22 05:50:52,687 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:50:52,688 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 05:50:52,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:50:52,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1785416430, now seen corresponding path program 2 times [2020-12-22 05:50:52,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:50:52,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921104474] [2020-12-22 05:50:52,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:50:52,713 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:50:52,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1328399622] [2020-12-22 05:50:52,714 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 05:50:52,806 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:50:52,807 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:50:52,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-22 05:50:52,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:50:52,907 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 05:50:52,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921104474] [2020-12-22 05:50:52,908 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:50:52,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328399622] [2020-12-22 05:50:52,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:50:52,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-22 05:50:52,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568450586] [2020-12-22 05:50:52,910 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:50:52,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:50:52,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:50:52,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:50:52,911 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand 6 states. [2020-12-22 05:50:53,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:50:53,116 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2020-12-22 05:50:53,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 05:50:53,117 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-12-22 05:50:53,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:50:53,118 INFO L225 Difference]: With dead ends: 70 [2020-12-22 05:50:53,118 INFO L226 Difference]: Without dead ends: 66 [2020-12-22 05:50:53,119 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 05:50:53,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-12-22 05:50:53,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2020-12-22 05:50:53,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-12-22 05:50:53,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2020-12-22 05:50:53,128 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 22 [2020-12-22 05:50:53,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:50:53,128 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2020-12-22 05:50:53,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:50:53,128 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2020-12-22 05:50:53,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-22 05:50:53,129 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:50:53,130 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2020-12-22 05:50:53,342 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:50:53,343 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 05:50:53,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:50:53,344 INFO L82 PathProgramCache]: Analyzing trace with hash 2093393681, now seen corresponding path program 2 times [2020-12-22 05:50:53,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:50:53,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181907114] [2020-12-22 05:50:53,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:50:53,373 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:50:53,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1709372551] [2020-12-22 05:50:53,374 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 05:50:53,458 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:50:53,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:50:53,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-22 05:50:53,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:50:53,613 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 05:50:53,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181907114] [2020-12-22 05:50:53,614 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:50:53,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709372551] [2020-12-22 05:50:53,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:50:53,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 05:50:53,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966819436] [2020-12-22 05:50:53,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:50:53,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:50:53,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:50:53,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:50:53,617 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 7 states. [2020-12-22 05:50:53,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:50:53,842 INFO L93 Difference]: Finished difference Result 67 states and 69 transitions. [2020-12-22 05:50:53,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 05:50:53,843 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-12-22 05:50:53,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:50:53,844 INFO L225 Difference]: With dead ends: 67 [2020-12-22 05:50:53,844 INFO L226 Difference]: Without dead ends: 63 [2020-12-22 05:50:53,845 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:50:53,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-12-22 05:50:53,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 56. [2020-12-22 05:50:53,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-12-22 05:50:53,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2020-12-22 05:50:53,853 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 24 [2020-12-22 05:50:53,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:50:53,854 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2020-12-22 05:50:53,854 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:50:53,854 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2020-12-22 05:50:53,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-22 05:50:53,855 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:50:53,855 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2020-12-22 05:50:54,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-22 05:50:54,066 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 05:50:54,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:50:54,067 INFO L82 PathProgramCache]: Analyzing trace with hash 1706788820, now seen corresponding path program 1 times [2020-12-22 05:50:54,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:50:54,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015129080] [2020-12-22 05:50:54,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:50:54,079 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:50:54,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [80939191] [2020-12-22 05:50:54,080 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 05:50:54,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:50:54,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-22 05:50:54,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:50:54,294 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 05:50:54,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015129080] [2020-12-22 05:50:54,295 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:50:54,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80939191] [2020-12-22 05:50:54,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:50:54,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 05:50:54,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217925859] [2020-12-22 05:50:54,296 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:50:54,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:50:54,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:50:54,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:50:54,297 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand 8 states. [2020-12-22 05:50:54,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:50:54,537 INFO L93 Difference]: Finished difference Result 65 states and 68 transitions. [2020-12-22 05:50:54,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 05:50:54,540 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2020-12-22 05:50:54,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:50:54,541 INFO L225 Difference]: With dead ends: 65 [2020-12-22 05:50:54,541 INFO L226 Difference]: Without dead ends: 55 [2020-12-22 05:50:54,542 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-12-22 05:50:54,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-12-22 05:50:54,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 52. [2020-12-22 05:50:54,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-12-22 05:50:54,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 53 transitions. [2020-12-22 05:50:54,549 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 53 transitions. Word has length 26 [2020-12-22 05:50:54,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:50:54,550 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 53 transitions. [2020-12-22 05:50:54,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:50:54,550 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 53 transitions. [2020-12-22 05:50:54,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-22 05:50:54,551 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:50:54,551 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1] [2020-12-22 05:50:54,765 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:50:54,766 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 05:50:54,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:50:54,767 INFO L82 PathProgramCache]: Analyzing trace with hash -1822162560, now seen corresponding path program 3 times [2020-12-22 05:50:54,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:50:54,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473308191] [2020-12-22 05:50:54,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:50:54,779 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:50:54,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [697679722] [2020-12-22 05:50:54,779 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 05:50:54,867 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-22 05:50:54,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:50:54,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-22 05:50:54,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:50:54,966 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 05:50:54,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473308191] [2020-12-22 05:50:54,967 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:50:54,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697679722] [2020-12-22 05:50:54,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:50:54,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-22 05:50:54,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066377412] [2020-12-22 05:50:54,968 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:50:54,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:50:54,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:50:54,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:50:54,969 INFO L87 Difference]: Start difference. First operand 52 states and 53 transitions. Second operand 5 states. [2020-12-22 05:50:55,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:50:55,060 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2020-12-22 05:50:55,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 05:50:55,061 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-12-22 05:50:55,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:50:55,062 INFO L225 Difference]: With dead ends: 52 [2020-12-22 05:50:55,062 INFO L226 Difference]: Without dead ends: 48 [2020-12-22 05:50:55,063 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 05:50:55,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-12-22 05:50:55,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-12-22 05:50:55,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-12-22 05:50:55,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2020-12-22 05:50:55,071 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 30 [2020-12-22 05:50:55,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:50:55,071 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2020-12-22 05:50:55,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:50:55,071 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2020-12-22 05:50:55,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-22 05:50:55,072 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:50:55,072 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1] [2020-12-22 05:50:55,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:50:55,286 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 05:50:55,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:50:55,287 INFO L82 PathProgramCache]: Analyzing trace with hash 1248592163, now seen corresponding path program 3 times [2020-12-22 05:50:55,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:50:55,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207487375] [2020-12-22 05:50:55,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:50:55,304 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:50:55,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [799099736] [2020-12-22 05:50:55,305 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 05:50:55,379 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-22 05:50:55,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:50:55,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-22 05:50:55,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:50:55,556 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 05:50:55,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207487375] [2020-12-22 05:50:55,557 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:50:55,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799099736] [2020-12-22 05:50:55,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:50:55,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 05:50:55,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744291760] [2020-12-22 05:50:55,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:50:55,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:50:55,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:50:55,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:50:55,559 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand 8 states. [2020-12-22 05:50:59,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:50:59,749 INFO L93 Difference]: Finished difference Result 48 states and 49 transitions. [2020-12-22 05:50:59,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 05:50:59,750 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2020-12-22 05:50:59,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:50:59,751 INFO L225 Difference]: With dead ends: 48 [2020-12-22 05:50:59,751 INFO L226 Difference]: Without dead ends: 0 [2020-12-22 05:50:59,752 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:50:59,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-22 05:50:59,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-22 05:50:59,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-22 05:50:59,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-22 05:50:59,752 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2020-12-22 05:50:59,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:50:59,753 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-22 05:50:59,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:50:59,753 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-22 05:50:59,753 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-22 05:50:59,963 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-22 05:50:59,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-22 05:51:00,479 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-22 05:51:00,480 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-22 05:51:00,480 INFO L192 CegarLoopUtils]: At program point L48(lines 21 49) the Hoare annotation is: true [2020-12-22 05:51:00,480 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-22 05:51:00,480 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-22 05:51:00,480 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-22 05:51:00,480 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-22 05:51:00,480 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-22 05:51:00,480 INFO L189 CegarLoopUtils]: For program point L12(lines 12 15) no Hoare annotation was computed. [2020-12-22 05:51:00,481 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 05:51:00,481 INFO L189 CegarLoopUtils]: For program point L12-3(lines 12 15) no Hoare annotation was computed. [2020-12-22 05:51:00,481 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 05:51:00,481 INFO L189 CegarLoopUtils]: For program point L12-6(lines 12 15) no Hoare annotation was computed. [2020-12-22 05:51:00,481 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 05:51:00,481 INFO L189 CegarLoopUtils]: For program point L12-9(lines 12 15) no Hoare annotation was computed. [2020-12-22 05:51:00,482 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 05:51:00,482 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-22 05:51:00,482 INFO L189 CegarLoopUtils]: For program point L12-12(lines 12 15) no Hoare annotation was computed. [2020-12-22 05:51:00,482 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 05:51:00,482 INFO L189 CegarLoopUtils]: For program point L12-15(lines 12 15) no Hoare annotation was computed. [2020-12-22 05:51:00,482 INFO L192 CegarLoopUtils]: At program point L12-17(lines 11 17) the Hoare annotation is: true [2020-12-22 05:51:00,482 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-22 05:51:00,482 INFO L189 CegarLoopUtils]: For program point L13(lines 13 14) no Hoare annotation was computed. [2020-12-22 05:51:00,483 INFO L189 CegarLoopUtils]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2020-12-22 05:51:00,483 INFO L189 CegarLoopUtils]: For program point L13-2(lines 13 14) no Hoare annotation was computed. [2020-12-22 05:51:00,483 INFO L189 CegarLoopUtils]: For program point L13-3(lines 13 14) no Hoare annotation was computed. [2020-12-22 05:51:00,483 INFO L189 CegarLoopUtils]: For program point L13-4(lines 13 14) no Hoare annotation was computed. [2020-12-22 05:51:00,483 INFO L189 CegarLoopUtils]: For program point L13-5(lines 13 14) no Hoare annotation was computed. [2020-12-22 05:51:00,483 INFO L189 CegarLoopUtils]: For program point L30-1(lines 30 42) no Hoare annotation was computed. [2020-12-22 05:51:00,483 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 05:51:00,483 INFO L189 CegarLoopUtils]: For program point L30-4(lines 30 42) no Hoare annotation was computed. [2020-12-22 05:51:00,483 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-22 05:51:00,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 05:51:00 BoogieIcfgContainer [2020-12-22 05:51:00,501 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 05:51:00,502 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 05:51:00,502 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 05:51:00,502 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 05:51:00,503 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:50:49" (3/4) ... [2020-12-22 05:51:00,506 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-22 05:51:00,524 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-12-22 05:51:00,524 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-22 05:51:00,524 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 05:51:00,525 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 05:51:00,572 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/nla-digbench-scaling/sqrt1-ll_unwindbound20.c-witness.graphml [2020-12-22 05:51:00,572 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 05:51:00,574 INFO L168 Benchmark]: Toolchain (without parser) took 11664.82 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 126.4 MB in the beginning and 67.7 MB in the end (delta: 58.7 MB). Peak memory consumption was 89.7 MB. Max. memory is 8.0 GB. [2020-12-22 05:51:00,575 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory was 123.7 MB in the beginning and 123.6 MB in the end (delta: 84.5 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 05:51:00,575 INFO L168 Benchmark]: CACSL2BoogieTranslator took 238.80 ms. Allocated memory is still 151.0 MB. Free memory was 126.1 MB in the beginning and 116.3 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-22 05:51:00,576 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.86 ms. Allocated memory is still 151.0 MB. Free memory was 116.3 MB in the beginning and 114.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 05:51:00,577 INFO L168 Benchmark]: Boogie Preprocessor took 27.82 ms. Allocated memory is still 151.0 MB. Free memory was 114.7 MB in the beginning and 113.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 05:51:00,577 INFO L168 Benchmark]: RCFGBuilder took 648.13 ms. Allocated memory is still 151.0 MB. Free memory was 113.7 MB in the beginning and 133.6 MB in the end (delta: -19.9 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. [2020-12-22 05:51:00,578 INFO L168 Benchmark]: TraceAbstraction took 10628.44 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 133.3 MB in the beginning and 70.8 MB in the end (delta: 62.4 MB). Peak memory consumption was 93.9 MB. Max. memory is 8.0 GB. [2020-12-22 05:51:00,579 INFO L168 Benchmark]: Witness Printer took 70.54 ms. Allocated memory is still 181.4 MB. Free memory was 70.8 MB in the beginning and 67.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 05:51:00,583 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory was 123.7 MB in the beginning and 123.6 MB in the end (delta: 84.5 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 238.80 ms. Allocated memory is still 151.0 MB. Free memory was 126.1 MB in the beginning and 116.3 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 40.86 ms. Allocated memory is still 151.0 MB. Free memory was 116.3 MB in the beginning and 114.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 27.82 ms. Allocated memory is still 151.0 MB. Free memory was 114.7 MB in the beginning and 113.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 648.13 ms. Allocated memory is still 151.0 MB. Free memory was 113.7 MB in the beginning and 133.6 MB in the end (delta: -19.9 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 10628.44 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 133.3 MB in the beginning and 70.8 MB in the end (delta: 62.4 MB). Peak memory consumption was 93.9 MB. Max. memory is 8.0 GB. * Witness Printer took 70.54 ms. Allocated memory is still 181.4 MB. Free memory was 70.8 MB in the beginning and 67.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (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: 9.9s, OverallIterations: 10, TraceHistogramMax: 4, AutomataDifference: 5.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 205 SDtfs, 254 SDslu, 412 SDs, 0 SdLazy, 548 SolverSat, 157 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 4.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 189 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.9s 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, 0.2s HoareSimplificationTime, 8 FomulaSimplificationsInter, 114 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.2s 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...