/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/prod4br-ll_unwindbound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 05:37:08,229 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 05:37:08,232 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 05:37:08,267 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 05:37:08,267 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 05:37:08,269 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 05:37:08,270 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 05:37:08,273 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 05:37:08,275 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 05:37:08,276 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 05:37:08,277 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 05:37:08,279 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 05:37:08,279 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 05:37:08,280 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 05:37:08,282 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 05:37:08,283 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 05:37:08,284 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 05:37:08,285 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 05:37:08,288 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 05:37:08,290 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 05:37:08,292 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 05:37:08,299 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 05:37:08,301 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 05:37:08,318 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 05:37:08,323 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 05:37:08,331 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 05:37:08,332 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 05:37:08,333 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 05:37:08,334 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 05:37:08,336 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 05:37:08,337 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 05:37:08,337 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 05:37:08,338 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 05:37:08,338 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 05:37:08,339 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 05:37:08,340 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 05:37:08,341 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 05:37:08,398 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 05:37:08,398 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 05:37:08,400 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 05:37:08,400 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 05:37:08,401 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 05:37:08,402 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 05:37:08,403 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 05:37:08,403 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 05:37:08,403 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 05:37:08,403 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 05:37:08,404 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 05:37:08,404 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 05:37:08,405 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 05:37:08,405 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 05:37:08,405 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 05:37:08,405 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 05:37:08,406 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 05:37:08,406 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:37:08,406 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 05:37:08,406 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 05:37:08,406 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 05:37:08,407 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 05:37:08,407 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 05:37:08,407 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 05:37:08,407 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 05:37:08,407 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 05:37:08,778 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 05:37:08,822 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 05:37:08,825 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 05:37:08,827 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 05:37:08,828 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 05:37:08,829 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_unwindbound5.c [2020-12-22 05:37:08,920 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1f1b4d9a/3df5e8b7526840bf880b6857b915701a/FLAGc1fcf6efc [2020-12-22 05:37:09,592 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 05:37:09,592 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_unwindbound5.c [2020-12-22 05:37:09,602 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1f1b4d9a/3df5e8b7526840bf880b6857b915701a/FLAGc1fcf6efc [2020-12-22 05:37:09,940 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1f1b4d9a/3df5e8b7526840bf880b6857b915701a [2020-12-22 05:37:09,943 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 05:37:09,945 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 05:37:09,946 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 05:37:09,946 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 05:37:09,950 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 05:37:09,951 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:37:09" (1/1) ... [2020-12-22 05:37:09,952 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f306d50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:37:09, skipping insertion in model container [2020-12-22 05:37:09,952 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:37:09" (1/1) ... [2020-12-22 05:37:09,961 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 05:37:09,977 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 05:37:10,120 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/prod4br-ll_unwindbound5.c[524,537] [2020-12-22 05:37:10,140 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:37:10,150 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 05:37:10,164 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/prod4br-ll_unwindbound5.c[524,537] [2020-12-22 05:37:10,174 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:37:10,190 INFO L208 MainTranslator]: Completed translation [2020-12-22 05:37:10,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:37:10 WrapperNode [2020-12-22 05:37:10,191 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 05:37:10,192 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 05:37:10,192 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 05:37:10,193 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 05:37:10,201 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:37:10" (1/1) ... [2020-12-22 05:37:10,208 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:37:10" (1/1) ... [2020-12-22 05:37:10,232 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 05:37:10,233 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 05:37:10,233 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 05:37:10,233 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 05:37:10,243 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:37:10" (1/1) ... [2020-12-22 05:37:10,243 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:37:10" (1/1) ... [2020-12-22 05:37:10,245 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:37:10" (1/1) ... [2020-12-22 05:37:10,246 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:37:10" (1/1) ... [2020-12-22 05:37:10,251 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:37:10" (1/1) ... [2020-12-22 05:37:10,256 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:37:10" (1/1) ... [2020-12-22 05:37:10,258 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:37:10" (1/1) ... [2020-12-22 05:37:10,261 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 05:37:10,264 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 05:37:10,270 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 05:37:10,270 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 05:37:10,271 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:37:10" (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 05:37:10,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 05:37:10,359 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 05:37:10,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 05:37:10,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 05:37:10,762 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 05:37:10,762 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2020-12-22 05:37:10,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:37:10 BoogieIcfgContainer [2020-12-22 05:37:10,767 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 05:37:10,769 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 05:37:10,769 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 05:37:10,774 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 05:37:10,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 05:37:09" (1/3) ... [2020-12-22 05:37:10,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63ca50a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:37:10, skipping insertion in model container [2020-12-22 05:37:10,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:37:10" (2/3) ... [2020-12-22 05:37:10,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63ca50a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:37:10, skipping insertion in model container [2020-12-22 05:37:10,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:37:10" (3/3) ... [2020-12-22 05:37:10,781 INFO L111 eAbstractionObserver]: Analyzing ICFG prod4br-ll_unwindbound5.c [2020-12-22 05:37:10,786 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 05:37:10,790 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-12-22 05:37:10,809 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-12-22 05:37:10,836 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 05:37:10,836 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 05:37:10,836 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 05:37:10,836 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 05:37:10,836 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 05:37:10,837 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 05:37:10,837 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 05:37:10,837 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 05:37:10,852 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-12-22 05:37:10,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-22 05:37:10,858 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:37:10,859 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:37:10,859 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:37:10,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:37:10,865 INFO L82 PathProgramCache]: Analyzing trace with hash 120613195, now seen corresponding path program 1 times [2020-12-22 05:37:10,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:37:10,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685381828] [2020-12-22 05:37:10,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:37:10,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:37:11,021 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 05:37:11,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685381828] [2020-12-22 05:37:11,023 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:37:11,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 05:37:11,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551032642] [2020-12-22 05:37:11,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 05:37:11,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:37:11,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 05:37:11,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 05:37:11,046 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2020-12-22 05:37:11,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:37:11,065 INFO L93 Difference]: Finished difference Result 47 states and 64 transitions. [2020-12-22 05:37:11,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 05:37:11,066 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-22 05:37:11,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:37:11,076 INFO L225 Difference]: With dead ends: 47 [2020-12-22 05:37:11,077 INFO L226 Difference]: Without dead ends: 21 [2020-12-22 05:37:11,080 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 05:37:11,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-12-22 05:37:11,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-12-22 05:37:11,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-12-22 05:37:11,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2020-12-22 05:37:11,124 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 8 [2020-12-22 05:37:11,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:37:11,124 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2020-12-22 05:37:11,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 05:37:11,125 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2020-12-22 05:37:11,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-22 05:37:11,125 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:37:11,126 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:37:11,126 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 05:37:11,126 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:37:11,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:37:11,127 INFO L82 PathProgramCache]: Analyzing trace with hash 176704684, now seen corresponding path program 1 times [2020-12-22 05:37:11,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:37:11,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112262587] [2020-12-22 05:37:11,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:37:11,150 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:37:11,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [474319313] [2020-12-22 05:37:11,150 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 05:37:11,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:37:11,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-22 05:37:11,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:37:11,394 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 05:37:11,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112262587] [2020-12-22 05:37:11,395 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:37:11,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474319313] [2020-12-22 05:37:11,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:37:11,396 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 05:37:11,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874929431] [2020-12-22 05:37:11,398 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:37:11,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:37:11,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:37:11,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:37:11,400 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 6 states. [2020-12-22 05:37:11,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:37:11,633 INFO L93 Difference]: Finished difference Result 42 states and 51 transitions. [2020-12-22 05:37:11,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 05:37:11,634 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2020-12-22 05:37:11,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:37:11,636 INFO L225 Difference]: With dead ends: 42 [2020-12-22 05:37:11,636 INFO L226 Difference]: Without dead ends: 40 [2020-12-22 05:37:11,637 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-12-22 05:37:11,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-12-22 05:37:11,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 24. [2020-12-22 05:37:11,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-12-22 05:37:11,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2020-12-22 05:37:11,646 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 8 [2020-12-22 05:37:11,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:37:11,646 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2020-12-22 05:37:11,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:37:11,647 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2020-12-22 05:37:11,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-22 05:37:11,647 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:37:11,648 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:37:11,861 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-22 05:37:11,862 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:37:11,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:37:11,864 INFO L82 PathProgramCache]: Analyzing trace with hash 1182850160, now seen corresponding path program 1 times [2020-12-22 05:37:11,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:37:11,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941738567] [2020-12-22 05:37:11,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:37:11,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:37:11,917 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 05:37:11,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941738567] [2020-12-22 05:37:11,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:37:11,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:37:11,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574276791] [2020-12-22 05:37:11,919 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:37:11,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:37:11,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:37:11,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:37:11,920 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand 4 states. [2020-12-22 05:37:11,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:37:11,936 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2020-12-22 05:37:11,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 05:37:11,937 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-22 05:37:11,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:37:11,938 INFO L225 Difference]: With dead ends: 32 [2020-12-22 05:37:11,938 INFO L226 Difference]: Without dead ends: 24 [2020-12-22 05:37:11,939 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:37:11,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-12-22 05:37:11,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-12-22 05:37:11,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-12-22 05:37:11,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2020-12-22 05:37:11,945 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 9 [2020-12-22 05:37:11,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:37:11,946 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2020-12-22 05:37:11,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:37:11,946 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2020-12-22 05:37:11,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 05:37:11,947 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:37:11,947 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:37:11,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 05:37:11,949 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:37:11,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:37:11,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1415754199, now seen corresponding path program 1 times [2020-12-22 05:37:11,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:37:11,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390399334] [2020-12-22 05:37:11,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:37:11,978 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:37:11,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1677144743] [2020-12-22 05:37:11,979 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 05:37:12,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:37:12,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-22 05:37:12,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:37:12,090 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 05:37:15,193 WARN L197 SmtUtils]: Spent 3.03 s on a formula simplification. DAG size of input: 43 DAG size of output: 40 [2020-12-22 05:37:15,264 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 05:37:15,267 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 05:37:15,272 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 05:37:15,280 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 05:37:15,284 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 05:37:15,288 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 05:37:15,331 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 05:37:15,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390399334] [2020-12-22 05:37:15,331 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:37:15,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677144743] [2020-12-22 05:37:15,332 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:37:15,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 05:37:15,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322176674] [2020-12-22 05:37:15,333 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 05:37:15,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:37:15,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 05:37:15,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:37:15,334 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 9 states. [2020-12-22 05:37:22,165 WARN L197 SmtUtils]: Spent 6.67 s on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2020-12-22 05:37:22,323 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 34 [2020-12-22 05:37:22,472 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 20 [2020-12-22 05:37:25,248 WARN L197 SmtUtils]: Spent 2.22 s on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2020-12-22 05:37:25,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:37:25,473 INFO L93 Difference]: Finished difference Result 52 states and 60 transitions. [2020-12-22 05:37:25,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 05:37:25,474 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 11 [2020-12-22 05:37:25,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:37:25,475 INFO L225 Difference]: With dead ends: 52 [2020-12-22 05:37:25,476 INFO L226 Difference]: Without dead ends: 44 [2020-12-22 05:37:25,477 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2020-12-22 05:37:25,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-12-22 05:37:25,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 30. [2020-12-22 05:37:25,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-12-22 05:37:25,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 38 transitions. [2020-12-22 05:37:25,485 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 38 transitions. Word has length 11 [2020-12-22 05:37:25,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:37:25,486 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 38 transitions. [2020-12-22 05:37:25,486 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 05:37:25,486 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 38 transitions. [2020-12-22 05:37:25,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 05:37:25,487 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:37:25,487 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:37:25,688 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:37:25,688 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:37:25,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:37:25,690 INFO L82 PathProgramCache]: Analyzing trace with hash 1005087291, now seen corresponding path program 1 times [2020-12-22 05:37:25,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:37:25,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893577342] [2020-12-22 05:37:25,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:37:25,704 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:37:25,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1056479742] [2020-12-22 05:37:25,704 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 05:37:25,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:37:25,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 37 conjunts are in the unsatisfiable core [2020-12-22 05:37:25,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:37:25,969 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 05:37:25,983 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 05:37:25,995 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 05:37:28,037 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 05:37:28,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893577342] [2020-12-22 05:37:28,038 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:37:28,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056479742] [2020-12-22 05:37:28,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:37:28,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 05:37:28,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543201406] [2020-12-22 05:37:28,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:37:28,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:37:28,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:37:28,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:37:28,040 INFO L87 Difference]: Start difference. First operand 30 states and 38 transitions. Second operand 8 states. [2020-12-22 05:37:32,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:37:32,622 INFO L93 Difference]: Finished difference Result 56 states and 73 transitions. [2020-12-22 05:37:32,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:37:32,623 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2020-12-22 05:37:32,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:37:32,624 INFO L225 Difference]: With dead ends: 56 [2020-12-22 05:37:32,624 INFO L226 Difference]: Without dead ends: 54 [2020-12-22 05:37:32,625 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2020-12-22 05:37:32,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-22 05:37:32,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 35. [2020-12-22 05:37:32,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-22 05:37:32,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 45 transitions. [2020-12-22 05:37:32,633 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 45 transitions. Word has length 13 [2020-12-22 05:37:32,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:37:32,634 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 45 transitions. [2020-12-22 05:37:32,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:37:32,634 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 45 transitions. [2020-12-22 05:37:32,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-22 05:37:32,635 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:37:32,635 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:37:32,848 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:37:32,849 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:37:32,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:37:32,850 INFO L82 PathProgramCache]: Analyzing trace with hash 1092907201, now seen corresponding path program 1 times [2020-12-22 05:37:32,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:37:32,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333299399] [2020-12-22 05:37:32,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:37:32,863 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:37:32,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1988463512] [2020-12-22 05:37:32,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:37:32,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:37:32,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 05:37:32,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:37:32,950 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:37:32,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333299399] [2020-12-22 05:37:32,950 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:37:32,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988463512] [2020-12-22 05:37:32,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:37:32,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-12-22 05:37:32,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747557138] [2020-12-22 05:37:32,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:37:32,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:37:32,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:37:32,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:37:32,953 INFO L87 Difference]: Start difference. First operand 35 states and 45 transitions. Second operand 5 states. [2020-12-22 05:37:32,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:37:32,989 INFO L93 Difference]: Finished difference Result 49 states and 62 transitions. [2020-12-22 05:37:32,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:37:32,989 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-22 05:37:32,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:37:32,990 INFO L225 Difference]: With dead ends: 49 [2020-12-22 05:37:32,990 INFO L226 Difference]: Without dead ends: 41 [2020-12-22 05:37:32,991 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:37:32,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-12-22 05:37:32,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-12-22 05:37:32,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-12-22 05:37:32,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 52 transitions. [2020-12-22 05:37:32,998 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 52 transitions. Word has length 14 [2020-12-22 05:37:32,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:37:32,998 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 52 transitions. [2020-12-22 05:37:32,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:37:32,999 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 52 transitions. [2020-12-22 05:37:32,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-22 05:37:32,999 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:37:33,000 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:37:33,213 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:37:33,214 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:37:33,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:37:33,216 INFO L82 PathProgramCache]: Analyzing trace with hash 1175899963, now seen corresponding path program 1 times [2020-12-22 05:37:33,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:37:33,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029786792] [2020-12-22 05:37:33,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:37:33,227 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:37:33,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2080458841] [2020-12-22 05:37:33,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:37:33,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:37:33,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 32 conjunts are in the unsatisfiable core [2020-12-22 05:37:33,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:37:35,438 WARN L197 SmtUtils]: Spent 2.10 s on a formula simplification. DAG size of input: 25 DAG size of output: 16 [2020-12-22 05:37:35,509 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 05:37:35,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029786792] [2020-12-22 05:37:35,510 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:37:35,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080458841] [2020-12-22 05:37:35,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:37:35,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 05:37:35,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003848317] [2020-12-22 05:37:35,511 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:37:35,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:37:35,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:37:35,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:37:35,512 INFO L87 Difference]: Start difference. First operand 41 states and 52 transitions. Second operand 8 states. [2020-12-22 05:37:35,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:37:35,887 INFO L93 Difference]: Finished difference Result 53 states and 69 transitions. [2020-12-22 05:37:35,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 05:37:35,888 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2020-12-22 05:37:35,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:37:35,889 INFO L225 Difference]: With dead ends: 53 [2020-12-22 05:37:35,889 INFO L226 Difference]: Without dead ends: 51 [2020-12-22 05:37:35,890 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-12-22 05:37:35,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-12-22 05:37:35,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 42. [2020-12-22 05:37:35,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-12-22 05:37:35,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 53 transitions. [2020-12-22 05:37:35,897 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 53 transitions. Word has length 14 [2020-12-22 05:37:35,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:37:35,898 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 53 transitions. [2020-12-22 05:37:35,898 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:37:35,898 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 53 transitions. [2020-12-22 05:37:35,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-22 05:37:35,899 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:37:35,899 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:37:36,112 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-22 05:37:36,113 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:37:36,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:37:36,114 INFO L82 PathProgramCache]: Analyzing trace with hash -2112377150, now seen corresponding path program 1 times [2020-12-22 05:37:36,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:37:36,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791146385] [2020-12-22 05:37:36,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:37:36,126 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:37:36,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1147217030] [2020-12-22 05:37:36,127 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 05:37:36,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:37:36,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-22 05:37:36,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:37:36,355 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 05:37:36,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791146385] [2020-12-22 05:37:36,356 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:37:36,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147217030] [2020-12-22 05:37:36,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:37:36,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 05:37:36,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6992008] [2020-12-22 05:37:36,359 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:37:36,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:37:36,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:37:36,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:37:36,360 INFO L87 Difference]: Start difference. First operand 42 states and 53 transitions. Second operand 7 states. [2020-12-22 05:37:36,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:37:36,825 INFO L93 Difference]: Finished difference Result 62 states and 77 transitions. [2020-12-22 05:37:36,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:37:36,826 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-12-22 05:37:36,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:37:36,827 INFO L225 Difference]: With dead ends: 62 [2020-12-22 05:37:36,827 INFO L226 Difference]: Without dead ends: 60 [2020-12-22 05:37:36,828 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-12-22 05:37:36,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-12-22 05:37:36,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 42. [2020-12-22 05:37:36,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-12-22 05:37:36,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 53 transitions. [2020-12-22 05:37:36,836 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 53 transitions. Word has length 15 [2020-12-22 05:37:36,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:37:36,836 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 53 transitions. [2020-12-22 05:37:36,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:37:36,836 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 53 transitions. [2020-12-22 05:37:36,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-22 05:37:36,837 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:37:36,837 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:37:37,044 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:37:37,045 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:37:37,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:37:37,046 INFO L82 PathProgramCache]: Analyzing trace with hash -2114224192, now seen corresponding path program 1 times [2020-12-22 05:37:37,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:37:37,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417904652] [2020-12-22 05:37:37,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:37:37,057 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:37:37,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [5336734] [2020-12-22 05:37:37,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:37:37,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:37:37,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 36 conjunts are in the unsatisfiable core [2020-12-22 05:37:37,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:37:39,356 WARN L197 SmtUtils]: Spent 2.15 s on a formula simplification. DAG size of input: 25 DAG size of output: 16 [2020-12-22 05:37:39,493 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 05:37:39,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417904652] [2020-12-22 05:37:39,494 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:37:39,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5336734] [2020-12-22 05:37:39,498 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:37:39,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 05:37:39,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75960383] [2020-12-22 05:37:39,499 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:37:39,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:37:39,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:37:39,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:37:39,501 INFO L87 Difference]: Start difference. First operand 42 states and 53 transitions. Second operand 8 states. [2020-12-22 05:37:44,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:37:44,218 INFO L93 Difference]: Finished difference Result 73 states and 91 transitions. [2020-12-22 05:37:44,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:37:44,218 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-12-22 05:37:44,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:37:44,219 INFO L225 Difference]: With dead ends: 73 [2020-12-22 05:37:44,219 INFO L226 Difference]: Without dead ends: 56 [2020-12-22 05:37:44,220 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2020-12-22 05:37:44,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-12-22 05:37:44,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 45. [2020-12-22 05:37:44,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-12-22 05:37:44,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 57 transitions. [2020-12-22 05:37:44,228 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 57 transitions. Word has length 15 [2020-12-22 05:37:44,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:37:44,229 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 57 transitions. [2020-12-22 05:37:44,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:37:44,229 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 57 transitions. [2020-12-22 05:37:44,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 05:37:44,230 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:37:44,230 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:37:44,434 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:37:44,435 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:37:44,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:37:44,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1951591878, now seen corresponding path program 1 times [2020-12-22 05:37:44,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:37:44,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955729712] [2020-12-22 05:37:44,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:37:44,447 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:37:44,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [143005887] [2020-12-22 05:37:44,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 05:37:44,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:37:44,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-22 05:37:44,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:37:44,593 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:37:44,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955729712] [2020-12-22 05:37:44,593 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:37:44,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143005887] [2020-12-22 05:37:44,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:37:44,594 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 05:37:44,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687740309] [2020-12-22 05:37:44,595 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:37:44,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:37:44,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:37:44,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:37:44,596 INFO L87 Difference]: Start difference. First operand 45 states and 57 transitions. Second operand 6 states. [2020-12-22 05:37:44,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:37:44,785 INFO L93 Difference]: Finished difference Result 87 states and 103 transitions. [2020-12-22 05:37:44,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:37:44,786 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-12-22 05:37:44,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:37:44,787 INFO L225 Difference]: With dead ends: 87 [2020-12-22 05:37:44,787 INFO L226 Difference]: Without dead ends: 79 [2020-12-22 05:37:44,787 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:37:44,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-12-22 05:37:44,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 58. [2020-12-22 05:37:44,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-12-22 05:37:44,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 77 transitions. [2020-12-22 05:37:44,799 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 77 transitions. Word has length 16 [2020-12-22 05:37:44,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:37:44,799 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 77 transitions. [2020-12-22 05:37:44,800 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:37:44,800 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 77 transitions. [2020-12-22 05:37:44,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 05:37:44,801 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:37:44,801 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-22 05:37:45,006 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-22 05:37:45,007 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:37:45,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:37:45,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1461153292, now seen corresponding path program 2 times [2020-12-22 05:37:45,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:37:45,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044986171] [2020-12-22 05:37:45,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:37:45,018 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:37:45,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1335838661] [2020-12-22 05:37:45,019 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 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:37:45,067 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:37:45,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:37:45,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 49 conjunts are in the unsatisfiable core [2020-12-22 05:37:45,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:37:47,262 WARN L838 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~p~0 4) (<= 1 c_ULTIMATE.start_main_~y~0) (= c_ULTIMATE.start_main_~a~0 (div c_ULTIMATE.start_main_~x~0 2)) (= (mod c_ULTIMATE.start_main_~x~0 2) 0) (= c_ULTIMATE.start_main_~b~0 (div c_ULTIMATE.start_main_~y~0 2)) (= c_ULTIMATE.start_main_~q~0 0) (<= (mod c_ULTIMATE.start_main_~y~0 2) 0) (let ((.cse0 (= (* c_ULTIMATE.start_main_~x~0 c_ULTIMATE.start_main_~y~0) (+ (* c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~p~0 c_ULTIMATE.start_main_~b~0) c_ULTIMATE.start_main_~q~0)))) (or (and (= 0 c_ULTIMATE.start___VERIFIER_assert_~cond) (not .cse0)) (and .cse0 (= 1 c_ULTIMATE.start___VERIFIER_assert_~cond))))) is different from false [2020-12-22 05:37:57,442 WARN L197 SmtUtils]: Spent 8.15 s on a formula simplification that was a NOOP. DAG size: 26 [2020-12-22 05:38:09,656 WARN L197 SmtUtils]: Spent 12.15 s on a formula simplification. DAG size of input: 47 DAG size of output: 34 [2020-12-22 05:38:09,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044986171] [2020-12-22 05:38:09,681 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:38:09,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335838661] [2020-12-22 05:38:09,681 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: null [2020-12-22 05:38:09,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:38:09,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-12-22 05:38:09,682 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2020-12-22 05:38:09,682 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 05:38:09,900 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:38:09,918 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-12-22 05:38:09,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 05:38:09 BoogieIcfgContainer [2020-12-22 05:38:09,919 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 05:38:09,919 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 05:38:09,919 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 05:38:09,920 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 05:38:09,920 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:37:10" (3/4) ... [2020-12-22 05:38:09,923 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-22 05:38:09,923 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 05:38:09,925 INFO L168 Benchmark]: Toolchain (without parser) took 59979.88 ms. Allocated memory was 158.3 MB in the beginning and 192.9 MB in the end (delta: 34.6 MB). Free memory was 134.3 MB in the beginning and 156.8 MB in the end (delta: -22.5 MB). Peak memory consumption was 13.7 MB. Max. memory is 8.0 GB. [2020-12-22 05:38:09,925 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 158.3 MB. Free memory is still 131.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 05:38:09,926 INFO L168 Benchmark]: CACSL2BoogieTranslator took 245.18 ms. Allocated memory is still 158.3 MB. Free memory was 134.0 MB in the beginning and 124.1 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-22 05:38:09,926 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.03 ms. Allocated memory is still 158.3 MB. Free memory was 124.0 MB in the beginning and 122.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 05:38:09,927 INFO L168 Benchmark]: Boogie Preprocessor took 27.75 ms. Allocated memory is still 158.3 MB. Free memory was 122.3 MB in the beginning and 121.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 05:38:09,928 INFO L168 Benchmark]: RCFGBuilder took 502.89 ms. Allocated memory is still 158.3 MB. Free memory was 121.1 MB in the beginning and 138.2 MB in the end (delta: -17.1 MB). Peak memory consumption was 15.0 MB. Max. memory is 8.0 GB. [2020-12-22 05:38:09,928 INFO L168 Benchmark]: TraceAbstraction took 59149.69 ms. Allocated memory was 158.3 MB in the beginning and 192.9 MB in the end (delta: 34.6 MB). Free memory was 137.7 MB in the beginning and 157.3 MB in the end (delta: -19.7 MB). Peak memory consumption was 15.5 MB. Max. memory is 8.0 GB. [2020-12-22 05:38:09,929 INFO L168 Benchmark]: Witness Printer took 4.28 ms. Allocated memory is still 192.9 MB. Free memory was 157.3 MB in the beginning and 156.8 MB in the end (delta: 526.3 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 05:38:09,933 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 158.3 MB. Free memory is still 131.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 245.18 ms. Allocated memory is still 158.3 MB. Free memory was 134.0 MB in the beginning and 124.1 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 40.03 ms. Allocated memory is still 158.3 MB. Free memory was 124.0 MB in the beginning and 122.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 27.75 ms. Allocated memory is still 158.3 MB. Free memory was 122.3 MB in the beginning and 121.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 502.89 ms. Allocated memory is still 158.3 MB. Free memory was 121.1 MB in the beginning and 138.2 MB in the end (delta: -17.1 MB). Peak memory consumption was 15.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 59149.69 ms. Allocated memory was 158.3 MB in the beginning and 192.9 MB in the end (delta: 34.6 MB). Free memory was 137.7 MB in the beginning and 157.3 MB in the end (delta: -19.7 MB). Peak memory consumption was 15.5 MB. Max. memory is 8.0 GB. * Witness Printer took 4.28 ms. Allocated memory is still 192.9 MB. Free memory was 157.3 MB in the beginning and 156.8 MB in the end (delta: 526.3 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L19] int counter = 0; [L21] int x, y; [L22] long long a, b, p, q; [L24] x = __VERIFIER_nondet_int() [L25] y = __VERIFIER_nondet_int() [L9] COND FALSE !(!cond) [L28] a = x [L29] b = y [L30] p = 1 [L31] q = 0 [L33] EXPR counter++ [L33] COND TRUE counter++<5 [L12] COND FALSE !(!(cond)) [L36] COND FALSE !(!(a != 0 && b != 0)) [L39] COND TRUE a % 2 == 0 && b % 2 == 0 [L40] a = a / 2 [L41] b = b / 2 [L42] p = 4 * p [L33] EXPR counter++ [L33] COND TRUE counter++<5 [L12] COND FALSE !(!(cond)) [L36] COND FALSE !(!(a != 0 && b != 0)) [L39] COND TRUE a % 2 == 0 && b % 2 == 0 [L40] a = a / 2 [L41] b = b / 2 [L42] p = 4 * p [L33] EXPR counter++ [L33] COND TRUE counter++<5 [L12] COND TRUE !(cond) [L14] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 25 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 59.0s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 20.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 197 SDtfs, 641 SDslu, 416 SDs, 0 SdLazy, 568 SolverSat, 158 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 9.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 143 GetRequests, 58 SyntacticMatches, 2 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 18.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 108 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 10.7s InterpolantComputationTime, 123 NumberOfCodeBlocks, 123 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 113 ConstructedInterpolants, 1 QuantifiedInterpolants, 13525 SizeOfPredicates, 66 NumberOfNonLiveVariables, 670 ConjunctsInSsa, 193 ConjunctsInUnsatCore, 10 InterpolantComputations, 5 PerfectInterpolantSequences, 4/18 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...