/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/hard-ll_valuebound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 05:28:27,393 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 05:28:27,395 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 05:28:27,430 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 05:28:27,431 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 05:28:27,432 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 05:28:27,434 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 05:28:27,436 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 05:28:27,439 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 05:28:27,440 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 05:28:27,441 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 05:28:27,443 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 05:28:27,443 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 05:28:27,445 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 05:28:27,446 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 05:28:27,448 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 05:28:27,449 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 05:28:27,451 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 05:28:27,453 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 05:28:27,490 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 05:28:27,508 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 05:28:27,517 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 05:28:27,518 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 05:28:27,521 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 05:28:27,530 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 05:28:27,534 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 05:28:27,535 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 05:28:27,536 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 05:28:27,537 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 05:28:27,538 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 05:28:27,538 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 05:28:27,539 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 05:28:27,539 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 05:28:27,540 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 05:28:27,541 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 05:28:27,542 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 05:28:27,543 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 05:28:27,570 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 05:28:27,570 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 05:28:27,572 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 05:28:27,572 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 05:28:27,572 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 05:28:27,573 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 05:28:27,573 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 05:28:27,573 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 05:28:27,574 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 05:28:27,574 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 05:28:27,574 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 05:28:27,574 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 05:28:27,575 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 05:28:27,575 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 05:28:27,575 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 05:28:27,576 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 05:28:27,576 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 05:28:27,576 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:28:27,577 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 05:28:27,577 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 05:28:27,577 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 05:28:27,577 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 05:28:27,577 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 05:28:27,578 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 05:28:27,578 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 05:28:27,578 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 05:28:27,938 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 05:28:27,965 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 05:28:27,969 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 05:28:27,970 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 05:28:27,971 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 05:28:27,972 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound5.c [2020-12-22 05:28:28,058 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69d2a309b/2d1715fe26714d3f9c660b60d186bac7/FLAG6f5331b1e [2020-12-22 05:28:28,638 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 05:28:28,639 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound5.c [2020-12-22 05:28:28,646 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69d2a309b/2d1715fe26714d3f9c660b60d186bac7/FLAG6f5331b1e [2020-12-22 05:28:29,000 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69d2a309b/2d1715fe26714d3f9c660b60d186bac7 [2020-12-22 05:28:29,013 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 05:28:29,015 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 05:28:29,017 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 05:28:29,017 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 05:28:29,022 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 05:28:29,023 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:28:29" (1/1) ... [2020-12-22 05:28:29,025 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d3cfb6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:28:29, skipping insertion in model container [2020-12-22 05:28:29,025 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:28:29" (1/1) ... [2020-12-22 05:28:29,034 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 05:28:29,055 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 05:28:29,238 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/hard-ll_valuebound5.c[538,551] [2020-12-22 05:28:29,257 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:28:29,268 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 05:28:29,283 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/hard-ll_valuebound5.c[538,551] [2020-12-22 05:28:29,292 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:28:29,309 INFO L208 MainTranslator]: Completed translation [2020-12-22 05:28:29,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:28:29 WrapperNode [2020-12-22 05:28:29,310 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 05:28:29,311 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 05:28:29,311 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 05:28:29,311 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 05:28:29,320 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:28:29" (1/1) ... [2020-12-22 05:28:29,328 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:28:29" (1/1) ... [2020-12-22 05:28:29,354 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 05:28:29,355 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 05:28:29,355 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 05:28:29,355 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 05:28:29,365 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:28:29" (1/1) ... [2020-12-22 05:28:29,365 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:28:29" (1/1) ... [2020-12-22 05:28:29,367 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:28:29" (1/1) ... [2020-12-22 05:28:29,367 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:28:29" (1/1) ... [2020-12-22 05:28:29,372 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:28:29" (1/1) ... [2020-12-22 05:28:29,378 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:28:29" (1/1) ... [2020-12-22 05:28:29,379 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:28:29" (1/1) ... [2020-12-22 05:28:29,382 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 05:28:29,383 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 05:28:29,383 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 05:28:29,383 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 05:28:29,384 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:28:29" (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 05:28:29,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 05:28:29,556 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 05:28:29,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 05:28:29,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 05:28:29,918 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 05:28:29,919 INFO L299 CfgBuilder]: Removed 26 assume(true) statements. [2020-12-22 05:28:29,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:28:29 BoogieIcfgContainer [2020-12-22 05:28:29,921 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 05:28:29,922 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 05:28:29,923 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 05:28:29,926 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 05:28:29,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 05:28:29" (1/3) ... [2020-12-22 05:28:29,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d4b1a18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:28:29, skipping insertion in model container [2020-12-22 05:28:29,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:28:29" (2/3) ... [2020-12-22 05:28:29,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d4b1a18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:28:29, skipping insertion in model container [2020-12-22 05:28:29,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:28:29" (3/3) ... [2020-12-22 05:28:29,930 INFO L111 eAbstractionObserver]: Analyzing ICFG hard-ll_valuebound5.c [2020-12-22 05:28:29,937 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 05:28:29,945 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-12-22 05:28:29,979 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-22 05:28:30,009 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 05:28:30,010 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 05:28:30,010 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 05:28:30,010 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 05:28:30,010 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 05:28:30,011 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 05:28:30,011 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 05:28:30,011 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 05:28:30,030 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-12-22 05:28:30,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 05:28:30,037 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:28:30,038 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:28:30,038 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:28:30,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:28:30,045 INFO L82 PathProgramCache]: Analyzing trace with hash 330581779, now seen corresponding path program 1 times [2020-12-22 05:28:30,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:28:30,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121810445] [2020-12-22 05:28:30,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:28:30,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:28:30,237 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 05:28:30,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121810445] [2020-12-22 05:28:30,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:28:30,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 05:28:30,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165108331] [2020-12-22 05:28:30,246 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 05:28:30,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:28:30,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 05:28:30,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 05:28:30,267 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2020-12-22 05:28:30,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:28:30,302 INFO L93 Difference]: Finished difference Result 83 states and 114 transitions. [2020-12-22 05:28:30,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 05:28:30,304 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-12-22 05:28:30,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:28:30,321 INFO L225 Difference]: With dead ends: 83 [2020-12-22 05:28:30,322 INFO L226 Difference]: Without dead ends: 39 [2020-12-22 05:28:30,329 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 05:28:30,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-12-22 05:28:30,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-12-22 05:28:30,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-12-22 05:28:30,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2020-12-22 05:28:30,380 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 11 [2020-12-22 05:28:30,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:28:30,380 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2020-12-22 05:28:30,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 05:28:30,381 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2020-12-22 05:28:30,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 05:28:30,382 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:28:30,382 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:28:30,384 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 05:28:30,386 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:28:30,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:28:30,390 INFO L82 PathProgramCache]: Analyzing trace with hash -1507472743, now seen corresponding path program 1 times [2020-12-22 05:28:30,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:28:30,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296187870] [2020-12-22 05:28:30,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:28:30,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:28:30,587 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 05:28:30,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296187870] [2020-12-22 05:28:30,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:28:30,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:28:30,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027835868] [2020-12-22 05:28:30,589 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:28:30,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:28:30,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:28:30,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:28:30,591 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 4 states. [2020-12-22 05:28:30,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:28:30,756 INFO L93 Difference]: Finished difference Result 58 states and 61 transitions. [2020-12-22 05:28:30,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:28:30,757 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-22 05:28:30,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:28:30,759 INFO L225 Difference]: With dead ends: 58 [2020-12-22 05:28:30,759 INFO L226 Difference]: Without dead ends: 56 [2020-12-22 05:28:30,760 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 05:28:30,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-12-22 05:28:30,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 37. [2020-12-22 05:28:30,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-22 05:28:30,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2020-12-22 05:28:30,769 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 11 [2020-12-22 05:28:30,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:28:30,769 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2020-12-22 05:28:30,769 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:28:30,770 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2020-12-22 05:28:30,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 05:28:30,770 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:28:30,771 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:28:30,771 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 05:28:30,771 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:28:30,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:28:30,772 INFO L82 PathProgramCache]: Analyzing trace with hash -1277171076, now seen corresponding path program 1 times [2020-12-22 05:28:30,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:28:30,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692995433] [2020-12-22 05:28:30,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:28:30,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:28:30,937 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 05:28:30,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692995433] [2020-12-22 05:28:30,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:28:30,938 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:28:30,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155913945] [2020-12-22 05:28:30,940 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:28:30,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:28:30,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:28:30,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:28:30,953 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 4 states. [2020-12-22 05:28:31,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:28:31,063 INFO L93 Difference]: Finished difference Result 56 states and 59 transitions. [2020-12-22 05:28:31,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:28:31,064 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-22 05:28:31,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:28:31,065 INFO L225 Difference]: With dead ends: 56 [2020-12-22 05:28:31,065 INFO L226 Difference]: Without dead ends: 54 [2020-12-22 05:28:31,066 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 05:28:31,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-22 05:28:31,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 35. [2020-12-22 05:28:31,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-22 05:28:31,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2020-12-22 05:28:31,074 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 13 [2020-12-22 05:28:31,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:28:31,075 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2020-12-22 05:28:31,075 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:28:31,075 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2020-12-22 05:28:31,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-22 05:28:31,076 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:28:31,076 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:28:31,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 05:28:31,076 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:28:31,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:28:31,077 INFO L82 PathProgramCache]: Analyzing trace with hash 999399167, now seen corresponding path program 1 times [2020-12-22 05:28:31,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:28:31,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146993148] [2020-12-22 05:28:31,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:28:31,095 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:28:31,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1579426463] [2020-12-22 05:28:31,096 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 05:28:31,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:28:31,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-22 05:28:31,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:28:31,255 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 05:28:31,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146993148] [2020-12-22 05:28:31,256 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:28:31,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579426463] [2020-12-22 05:28:31,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:28:31,257 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 05:28:31,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22696543] [2020-12-22 05:28:31,258 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:28:31,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:28:31,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:28:31,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:28:31,260 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 6 states. [2020-12-22 05:28:31,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:28:31,400 INFO L93 Difference]: Finished difference Result 76 states and 82 transitions. [2020-12-22 05:28:31,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:28:31,400 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-12-22 05:28:31,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:28:31,402 INFO L225 Difference]: With dead ends: 76 [2020-12-22 05:28:31,402 INFO L226 Difference]: Without dead ends: 54 [2020-12-22 05:28:31,403 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:28:31,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-22 05:28:31,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 49. [2020-12-22 05:28:31,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-12-22 05:28:31,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-12-22 05:28:31,421 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 15 [2020-12-22 05:28:31,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:28:31,421 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-12-22 05:28:31,421 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:28:31,421 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-12-22 05:28:31,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 05:28:31,424 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:28:31,424 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:28:31,638 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:28:31,639 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:28:31,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:28:31,641 INFO L82 PathProgramCache]: Analyzing trace with hash 392223696, now seen corresponding path program 1 times [2020-12-22 05:28:31,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:28:31,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202343774] [2020-12-22 05:28:31,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:28:31,655 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:28:31,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1570261294] [2020-12-22 05:28:31,655 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 05:28:31,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:28:31,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-22 05:28:31,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:28:31,917 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 05:28:31,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202343774] [2020-12-22 05:28:31,919 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:28:31,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570261294] [2020-12-22 05:28:31,919 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:28:31,919 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 05:28:31,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631976670] [2020-12-22 05:28:31,921 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 05:28:31,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:28:31,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 05:28:31,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:28:31,925 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 9 states. [2020-12-22 05:28:32,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:28:32,231 INFO L93 Difference]: Finished difference Result 67 states and 72 transitions. [2020-12-22 05:28:32,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 05:28:32,232 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2020-12-22 05:28:32,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:28:32,233 INFO L225 Difference]: With dead ends: 67 [2020-12-22 05:28:32,234 INFO L226 Difference]: Without dead ends: 56 [2020-12-22 05:28:32,234 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-12-22 05:28:32,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-12-22 05:28:32,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 50. [2020-12-22 05:28:32,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-12-22 05:28:32,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 55 transitions. [2020-12-22 05:28:32,245 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 55 transitions. Word has length 18 [2020-12-22 05:28:32,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:28:32,246 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 55 transitions. [2020-12-22 05:28:32,246 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 05:28:32,246 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 55 transitions. [2020-12-22 05:28:32,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 05:28:32,247 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:28:32,247 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:28:32,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:28:32,462 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:28:32,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:28:32,464 INFO L82 PathProgramCache]: Analyzing trace with hash 434992196, now seen corresponding path program 1 times [2020-12-22 05:28:32,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:28:32,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448147039] [2020-12-22 05:28:32,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:28:32,479 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:28:32,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [150661466] [2020-12-22 05:28:32,480 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 05:28:32,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:28:32,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 28 conjunts are in the unsatisfiable core [2020-12-22 05:28:32,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:28:32,737 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:28:32,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448147039] [2020-12-22 05:28:32,737 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:28:32,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150661466] [2020-12-22 05:28:32,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:28:32,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-22 05:28:32,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259597711] [2020-12-22 05:28:32,739 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 05:28:32,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:28:32,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 05:28:32,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:28:32,740 INFO L87 Difference]: Start difference. First operand 50 states and 55 transitions. Second operand 9 states. [2020-12-22 05:28:33,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:28:33,170 INFO L93 Difference]: Finished difference Result 102 states and 117 transitions. [2020-12-22 05:28:33,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:28:33,171 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2020-12-22 05:28:33,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:28:33,172 INFO L225 Difference]: With dead ends: 102 [2020-12-22 05:28:33,172 INFO L226 Difference]: Without dead ends: 65 [2020-12-22 05:28:33,173 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-12-22 05:28:33,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-12-22 05:28:33,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 63. [2020-12-22 05:28:33,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-12-22 05:28:33,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 69 transitions. [2020-12-22 05:28:33,184 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 69 transitions. Word has length 22 [2020-12-22 05:28:33,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:28:33,185 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 69 transitions. [2020-12-22 05:28:33,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 05:28:33,185 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 69 transitions. [2020-12-22 05:28:33,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-22 05:28:33,186 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:28:33,186 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:28:33,400 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:28:33,401 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:28:33,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:28:33,403 INFO L82 PathProgramCache]: Analyzing trace with hash -919005345, now seen corresponding path program 2 times [2020-12-22 05:28:33,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:28:33,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517506179] [2020-12-22 05:28:33,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:28:33,416 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:28:33,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1028963420] [2020-12-22 05:28:33,417 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 05:28:33,480 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:28:33,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:28:33,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 38 conjunts are in the unsatisfiable core [2020-12-22 05:28:33,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:28:33,942 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:28:33,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517506179] [2020-12-22 05:28:33,942 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:28:33,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028963420] [2020-12-22 05:28:33,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:28:33,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-12-22 05:28:33,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142629176] [2020-12-22 05:28:33,945 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 05:28:33,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:28:33,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 05:28:33,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-12-22 05:28:33,947 INFO L87 Difference]: Start difference. First operand 63 states and 69 transitions. Second operand 12 states. [2020-12-22 05:28:34,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:28:34,927 INFO L93 Difference]: Finished difference Result 127 states and 144 transitions. [2020-12-22 05:28:34,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 05:28:34,928 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 29 [2020-12-22 05:28:34,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:28:34,931 INFO L225 Difference]: With dead ends: 127 [2020-12-22 05:28:34,931 INFO L226 Difference]: Without dead ends: 109 [2020-12-22 05:28:34,932 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=130, Invalid=422, Unknown=0, NotChecked=0, Total=552 [2020-12-22 05:28:34,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-12-22 05:28:34,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 100. [2020-12-22 05:28:34,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-12-22 05:28:34,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 115 transitions. [2020-12-22 05:28:34,950 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 115 transitions. Word has length 29 [2020-12-22 05:28:34,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:28:34,950 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 115 transitions. [2020-12-22 05:28:34,950 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 05:28:34,951 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 115 transitions. [2020-12-22 05:28:34,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 05:28:34,952 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:28:34,952 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:28:35,165 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:28:35,166 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:28:35,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:28:35,167 INFO L82 PathProgramCache]: Analyzing trace with hash -36466664, now seen corresponding path program 1 times [2020-12-22 05:28:35,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:28:35,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152918570] [2020-12-22 05:28:35,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:28:35,181 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:28:35,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [691763825] [2020-12-22 05:28:35,182 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 05:28:35,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:28:35,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 33 conjunts are in the unsatisfiable core [2020-12-22 05:28:35,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:28:35,562 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:28:35,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152918570] [2020-12-22 05:28:35,563 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:28:35,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691763825] [2020-12-22 05:28:35,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:28:35,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-22 05:28:35,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183020811] [2020-12-22 05:28:35,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 05:28:35,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:28:35,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 05:28:35,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-12-22 05:28:35,565 INFO L87 Difference]: Start difference. First operand 100 states and 115 transitions. Second operand 10 states. [2020-12-22 05:28:36,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:28:36,245 INFO L93 Difference]: Finished difference Result 125 states and 144 transitions. [2020-12-22 05:28:36,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 05:28:36,246 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2020-12-22 05:28:36,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:28:36,247 INFO L225 Difference]: With dead ends: 125 [2020-12-22 05:28:36,247 INFO L226 Difference]: Without dead ends: 123 [2020-12-22 05:28:36,248 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-12-22 05:28:36,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-12-22 05:28:36,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 111. [2020-12-22 05:28:36,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-12-22 05:28:36,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 131 transitions. [2020-12-22 05:28:36,292 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 131 transitions. Word has length 31 [2020-12-22 05:28:36,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:28:36,294 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 131 transitions. [2020-12-22 05:28:36,294 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 05:28:36,295 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 131 transitions. [2020-12-22 05:28:36,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-22 05:28:36,297 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:28:36,297 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:28:36,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:28:36,498 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:28:36,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:28:36,500 INFO L82 PathProgramCache]: Analyzing trace with hash -684568005, now seen corresponding path program 1 times [2020-12-22 05:28:36,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:28:36,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947422052] [2020-12-22 05:28:36,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:28:36,513 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:28:36,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1725176399] [2020-12-22 05:28:36,514 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 05:28:36,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:28:36,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 36 conjunts are in the unsatisfiable core [2020-12-22 05:28:36,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:28:36,879 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:28:36,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947422052] [2020-12-22 05:28:36,880 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:28:36,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725176399] [2020-12-22 05:28:36,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:28:36,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-22 05:28:36,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357721826] [2020-12-22 05:28:36,881 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 05:28:36,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:28:36,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 05:28:36,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-12-22 05:28:36,882 INFO L87 Difference]: Start difference. First operand 111 states and 131 transitions. Second operand 10 states. [2020-12-22 05:28:37,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:28:37,404 INFO L93 Difference]: Finished difference Result 133 states and 153 transitions. [2020-12-22 05:28:37,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 05:28:37,406 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 33 [2020-12-22 05:28:37,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:28:37,407 INFO L225 Difference]: With dead ends: 133 [2020-12-22 05:28:37,407 INFO L226 Difference]: Without dead ends: 109 [2020-12-22 05:28:37,408 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2020-12-22 05:28:37,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-12-22 05:28:37,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 105. [2020-12-22 05:28:37,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-12-22 05:28:37,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 120 transitions. [2020-12-22 05:28:37,422 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 120 transitions. Word has length 33 [2020-12-22 05:28:37,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:28:37,422 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 120 transitions. [2020-12-22 05:28:37,422 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 05:28:37,422 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 120 transitions. [2020-12-22 05:28:37,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-22 05:28:37,423 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:28:37,424 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:28:37,637 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:28:37,638 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:28:37,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:28:37,639 INFO L82 PathProgramCache]: Analyzing trace with hash -1455744328, now seen corresponding path program 1 times [2020-12-22 05:28:37,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:28:37,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488653384] [2020-12-22 05:28:37,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:28:37,667 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:28:37,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [8192611] [2020-12-22 05:28:37,669 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 05:28:37,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:28:37,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-22 05:28:37,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:28:38,021 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:28:38,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488653384] [2020-12-22 05:28:38,022 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:28:38,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8192611] [2020-12-22 05:28:38,023 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:28:38,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-22 05:28:38,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568933029] [2020-12-22 05:28:38,023 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 05:28:38,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:28:38,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 05:28:38,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-12-22 05:28:38,025 INFO L87 Difference]: Start difference. First operand 105 states and 120 transitions. Second operand 10 states. [2020-12-22 05:28:38,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:28:38,915 INFO L93 Difference]: Finished difference Result 148 states and 164 transitions. [2020-12-22 05:28:38,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 05:28:38,916 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 36 [2020-12-22 05:28:38,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:28:38,919 INFO L225 Difference]: With dead ends: 148 [2020-12-22 05:28:38,919 INFO L226 Difference]: Without dead ends: 133 [2020-12-22 05:28:38,920 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2020-12-22 05:28:38,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-12-22 05:28:38,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 104. [2020-12-22 05:28:38,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-12-22 05:28:38,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 123 transitions. [2020-12-22 05:28:38,944 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 123 transitions. Word has length 36 [2020-12-22 05:28:38,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:28:38,944 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 123 transitions. [2020-12-22 05:28:38,945 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 05:28:38,945 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 123 transitions. [2020-12-22 05:28:38,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-22 05:28:38,948 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:28:38,948 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:28:39,161 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-22 05:28:39,162 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:28:39,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:28:39,162 INFO L82 PathProgramCache]: Analyzing trace with hash -1277177884, now seen corresponding path program 3 times [2020-12-22 05:28:39,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:28:39,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428416540] [2020-12-22 05:28:39,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:28:39,174 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:28:39,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [714161868] [2020-12-22 05:28:39,175 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 05:28:39,224 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-22 05:28:39,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:28:39,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 26 conjunts are in the unsatisfiable core [2020-12-22 05:28:39,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:28:48,496 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-12-22 05:28:48,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428416540] [2020-12-22 05:28:48,497 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:28:48,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714161868] [2020-12-22 05:28:48,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:28:48,497 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-22 05:28:48,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798445410] [2020-12-22 05:28:48,498 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 05:28:48,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:28:48,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 05:28:48,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=47, Unknown=4, NotChecked=0, Total=72 [2020-12-22 05:28:48,499 INFO L87 Difference]: Start difference. First operand 104 states and 123 transitions. Second operand 9 states. [2020-12-22 05:29:30,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:29:30,359 INFO L93 Difference]: Finished difference Result 118 states and 135 transitions. [2020-12-22 05:29:30,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 05:29:30,360 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 36 [2020-12-22 05:29:30,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:29:30,361 INFO L225 Difference]: With dead ends: 118 [2020-12-22 05:29:30,362 INFO L226 Difference]: Without dead ends: 114 [2020-12-22 05:29:30,362 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 19.7s TimeCoverageRelationStatistics Valid=40, Invalid=85, Unknown=7, NotChecked=0, Total=132 [2020-12-22 05:29:30,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-12-22 05:29:30,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 106. [2020-12-22 05:29:30,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-12-22 05:29:30,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 125 transitions. [2020-12-22 05:29:30,375 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 125 transitions. Word has length 36 [2020-12-22 05:29:30,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:29:30,375 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 125 transitions. [2020-12-22 05:29:30,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 05:29:30,376 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 125 transitions. [2020-12-22 05:29:30,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-22 05:29:30,376 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:29:30,376 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:29:30,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-12-22 05:29:30,578 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:29:30,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:29:30,579 INFO L82 PathProgramCache]: Analyzing trace with hash -642892963, now seen corresponding path program 2 times [2020-12-22 05:29:30,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:29:30,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578502425] [2020-12-22 05:29:30,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:29:30,603 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:29:30,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1805669443] [2020-12-22 05:29:30,605 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 05:29:30,721 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:29:30,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:29:30,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 47 conjunts are in the unsatisfiable core [2020-12-22 05:29:30,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:29:31,086 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:29:31,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578502425] [2020-12-22 05:29:31,087 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:29:31,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805669443] [2020-12-22 05:29:31,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:29:31,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-22 05:29:31,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868706469] [2020-12-22 05:29:31,088 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 05:29:31,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:29:31,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 05:29:31,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-12-22 05:29:31,089 INFO L87 Difference]: Start difference. First operand 106 states and 125 transitions. Second operand 11 states. [2020-12-22 05:29:31,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:29:31,988 INFO L93 Difference]: Finished difference Result 161 states and 192 transitions. [2020-12-22 05:29:31,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 05:29:31,989 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 38 [2020-12-22 05:29:31,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:29:31,990 INFO L225 Difference]: With dead ends: 161 [2020-12-22 05:29:31,990 INFO L226 Difference]: Without dead ends: 125 [2020-12-22 05:29:31,991 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2020-12-22 05:29:31,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-12-22 05:29:32,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 112. [2020-12-22 05:29:32,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-12-22 05:29:32,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 133 transitions. [2020-12-22 05:29:32,005 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 133 transitions. Word has length 38 [2020-12-22 05:29:32,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:29:32,005 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 133 transitions. [2020-12-22 05:29:32,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 05:29:32,005 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 133 transitions. [2020-12-22 05:29:32,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-22 05:29:32,006 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:29:32,006 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:29:32,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:29:32,222 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:29:32,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:29:32,223 INFO L82 PathProgramCache]: Analyzing trace with hash -1707275894, now seen corresponding path program 3 times [2020-12-22 05:29:32,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:29:32,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275177479] [2020-12-22 05:29:32,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:29:32,235 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:29:32,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1302880725] [2020-12-22 05:29:32,235 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 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:29:32,356 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-22 05:29:32,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:29:32,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 59 conjunts are in the unsatisfiable core [2020-12-22 05:29:32,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:29:33,085 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:29:33,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275177479] [2020-12-22 05:29:33,086 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:29:33,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302880725] [2020-12-22 05:29:33,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:29:33,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-12-22 05:29:33,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361285926] [2020-12-22 05:29:33,089 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-22 05:29:33,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:29:33,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-22 05:29:33,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2020-12-22 05:29:33,091 INFO L87 Difference]: Start difference. First operand 112 states and 133 transitions. Second operand 16 states. [2020-12-22 05:29:34,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:29:34,944 INFO L93 Difference]: Finished difference Result 149 states and 173 transitions. [2020-12-22 05:29:34,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-22 05:29:34,946 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 44 [2020-12-22 05:29:34,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:29:34,947 INFO L225 Difference]: With dead ends: 149 [2020-12-22 05:29:34,947 INFO L226 Difference]: Without dead ends: 118 [2020-12-22 05:29:34,948 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=187, Invalid=625, Unknown=0, NotChecked=0, Total=812 [2020-12-22 05:29:34,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-12-22 05:29:34,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 107. [2020-12-22 05:29:34,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-12-22 05:29:34,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 124 transitions. [2020-12-22 05:29:34,962 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 124 transitions. Word has length 44 [2020-12-22 05:29:34,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:29:34,962 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 124 transitions. [2020-12-22 05:29:34,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-22 05:29:34,963 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 124 transitions. [2020-12-22 05:29:34,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-22 05:29:34,963 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:29:34,963 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:29:35,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:29:35,177 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:29:35,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:29:35,178 INFO L82 PathProgramCache]: Analyzing trace with hash -2100302904, now seen corresponding path program 1 times [2020-12-22 05:29:35,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:29:35,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474549667] [2020-12-22 05:29:35,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:29:35,189 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:29:35,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1049102955] [2020-12-22 05:29:35,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:29:35,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:29:35,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 05:29:35,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:29:35,328 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 05:29:35,333 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 05:29:35,343 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 05:29:35,363 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 05:29:35,367 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 05:29:35,373 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 05:29:35,376 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-22 05:29:35,433 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 05:29:35,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474549667] [2020-12-22 05:29:35,433 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:29:35,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049102955] [2020-12-22 05:29:35,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:29:35,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:29:35,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865617228] [2020-12-22 05:29:35,435 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:29:35,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:29:35,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:29:35,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:29:35,436 INFO L87 Difference]: Start difference. First operand 107 states and 124 transitions. Second operand 5 states. [2020-12-22 05:29:35,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:29:35,518 INFO L93 Difference]: Finished difference Result 140 states and 162 transitions. [2020-12-22 05:29:35,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:29:35,520 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2020-12-22 05:29:35,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:29:35,521 INFO L225 Difference]: With dead ends: 140 [2020-12-22 05:29:35,521 INFO L226 Difference]: Without dead ends: 98 [2020-12-22 05:29:35,521 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 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 05:29:35,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-12-22 05:29:35,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 92. [2020-12-22 05:29:35,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-12-22 05:29:35,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 104 transitions. [2020-12-22 05:29:35,534 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 104 transitions. Word has length 44 [2020-12-22 05:29:35,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:29:35,534 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 104 transitions. [2020-12-22 05:29:35,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:29:35,534 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 104 transitions. [2020-12-22 05:29:35,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-22 05:29:35,535 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:29:35,535 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:29:35,750 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-22 05:29:35,751 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:29:35,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:29:35,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1027491960, now seen corresponding path program 4 times [2020-12-22 05:29:35,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:29:35,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671529311] [2020-12-22 05:29:35,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:29:35,763 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:29:35,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [284086830] [2020-12-22 05:29:35,763 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:29:35,911 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-22 05:29:35,912 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:29:35,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 55 conjunts are in the unsatisfiable core [2020-12-22 05:29:35,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:29:36,502 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:29:36,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671529311] [2020-12-22 05:29:36,503 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:29:36,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284086830] [2020-12-22 05:29:36,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:29:36,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-12-22 05:29:36,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70922363] [2020-12-22 05:29:36,504 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-22 05:29:36,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:29:36,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-22 05:29:36,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2020-12-22 05:29:36,505 INFO L87 Difference]: Start difference. First operand 92 states and 104 transitions. Second operand 14 states. [2020-12-22 05:29:37,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:29:37,913 INFO L93 Difference]: Finished difference Result 146 states and 166 transitions. [2020-12-22 05:29:37,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-22 05:29:37,914 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 45 [2020-12-22 05:29:37,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:29:37,915 INFO L225 Difference]: With dead ends: 146 [2020-12-22 05:29:37,915 INFO L226 Difference]: Without dead ends: 108 [2020-12-22 05:29:37,916 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2020-12-22 05:29:37,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-12-22 05:29:37,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 92. [2020-12-22 05:29:37,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-12-22 05:29:37,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 101 transitions. [2020-12-22 05:29:37,927 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 101 transitions. Word has length 45 [2020-12-22 05:29:37,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:29:37,927 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 101 transitions. [2020-12-22 05:29:37,927 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-22 05:29:37,927 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 101 transitions. [2020-12-22 05:29:37,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-22 05:29:37,928 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:29:37,928 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:29:38,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-22 05:29:38,142 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:29:38,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:29:38,143 INFO L82 PathProgramCache]: Analyzing trace with hash -14469331, now seen corresponding path program 2 times [2020-12-22 05:29:38,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:29:38,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775435320] [2020-12-22 05:29:38,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:29:38,152 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:29:38,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [389360692] [2020-12-22 05:29:38,153 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 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:29:38,223 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:29:38,223 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:29:38,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 61 conjunts are in the unsatisfiable core [2020-12-22 05:29:38,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:29:39,314 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:29:39,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775435320] [2020-12-22 05:29:39,315 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:29:39,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389360692] [2020-12-22 05:29:39,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:29:39,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-12-22 05:29:39,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626710124] [2020-12-22 05:29:39,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-22 05:29:39,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:29:39,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-22 05:29:39,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2020-12-22 05:29:39,317 INFO L87 Difference]: Start difference. First operand 92 states and 101 transitions. Second operand 17 states. [2020-12-22 05:29:41,102 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 35 [2020-12-22 05:29:41,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:29:41,865 INFO L93 Difference]: Finished difference Result 118 states and 130 transitions. [2020-12-22 05:29:41,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-12-22 05:29:41,867 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 46 [2020-12-22 05:29:41,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:29:41,868 INFO L225 Difference]: With dead ends: 118 [2020-12-22 05:29:41,868 INFO L226 Difference]: Without dead ends: 94 [2020-12-22 05:29:41,869 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=223, Invalid=899, Unknown=0, NotChecked=0, Total=1122 [2020-12-22 05:29:41,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-12-22 05:29:41,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 92. [2020-12-22 05:29:41,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-12-22 05:29:41,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 99 transitions. [2020-12-22 05:29:41,880 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 99 transitions. Word has length 46 [2020-12-22 05:29:41,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:29:41,881 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 99 transitions. [2020-12-22 05:29:41,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-22 05:29:41,881 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 99 transitions. [2020-12-22 05:29:41,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-22 05:29:41,881 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:29:41,882 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:29:42,095 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-22 05:29:42,096 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:29:42,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:29:42,097 INFO L82 PathProgramCache]: Analyzing trace with hash -422546789, now seen corresponding path program 3 times [2020-12-22 05:29:42,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:29:42,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149094940] [2020-12-22 05:29:42,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:29:42,110 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:29:42,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [175902134] [2020-12-22 05:29:42,111 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 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:29:42,249 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-22 05:29:42,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:29:42,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 47 conjunts are in the unsatisfiable core [2020-12-22 05:29:42,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:29:44,543 WARN L197 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 25 [2020-12-22 05:29:44,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149094940] [2020-12-22 05:29:44,706 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:29:44,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175902134] [2020-12-22 05:29:44,706 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: null [2020-12-22 05:29:44,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:29:44,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-12-22 05:29:44,706 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2020-12-22 05:29:44,706 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 05:29:44,920 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:29:44,941 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-12-22 05:29:44,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 05:29:44 BoogieIcfgContainer [2020-12-22 05:29:44,942 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 05:29:44,942 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 05:29:44,942 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 05:29:44,943 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 05:29:44,943 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:28:29" (3/4) ... [2020-12-22 05:29:44,948 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-22 05:29:44,948 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 05:29:44,950 INFO L168 Benchmark]: Toolchain (without parser) took 75934.34 ms. Allocated memory was 162.5 MB in the beginning and 243.3 MB in the end (delta: 80.7 MB). Free memory was 144.1 MB in the beginning and 214.5 MB in the end (delta: -70.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 8.0 GB. [2020-12-22 05:29:44,950 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 162.5 MB. Free memory is still 135.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 05:29:44,951 INFO L168 Benchmark]: CACSL2BoogieTranslator took 293.32 ms. Allocated memory is still 162.5 MB. Free memory was 143.8 MB in the beginning and 133.8 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-22 05:29:44,951 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.13 ms. Allocated memory is still 162.5 MB. Free memory was 133.8 MB in the beginning and 132.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 05:29:44,952 INFO L168 Benchmark]: Boogie Preprocessor took 27.36 ms. Allocated memory is still 162.5 MB. Free memory was 132.2 MB in the beginning and 131.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 05:29:44,952 INFO L168 Benchmark]: RCFGBuilder took 537.92 ms. Allocated memory is still 162.5 MB. Free memory was 131.0 MB in the beginning and 129.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 3.3 MB. Max. memory is 8.0 GB. [2020-12-22 05:29:44,953 INFO L168 Benchmark]: TraceAbstraction took 75019.36 ms. Allocated memory was 162.5 MB in the beginning and 243.3 MB in the end (delta: 80.7 MB). Free memory was 129.1 MB in the beginning and 215.0 MB in the end (delta: -85.9 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 05:29:44,953 INFO L168 Benchmark]: Witness Printer took 6.13 ms. Allocated memory is still 243.3 MB. Free memory was 215.0 MB in the beginning and 214.5 MB in the end (delta: 524.3 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 05:29:44,956 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 162.5 MB. Free memory is still 135.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 293.32 ms. Allocated memory is still 162.5 MB. Free memory was 143.8 MB in the beginning and 133.8 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 43.13 ms. Allocated memory is still 162.5 MB. Free memory was 133.8 MB in the beginning and 132.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 27.36 ms. Allocated memory is still 162.5 MB. Free memory was 132.2 MB in the beginning and 131.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 537.92 ms. Allocated memory is still 162.5 MB. Free memory was 131.0 MB in the beginning and 129.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 3.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 75019.36 ms. Allocated memory was 162.5 MB in the beginning and 243.3 MB in the end (delta: 80.7 MB). Free memory was 129.1 MB in the beginning and 215.0 MB in the end (delta: -85.9 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 6.13 ms. Allocated memory is still 243.3 MB. Free memory was 215.0 MB in the beginning and 214.5 MB in the end (delta: 524.3 kB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 17]: 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: [L23] unsigned int A, B; [L24] long long r, d, p, q; [L25] A = __VERIFIER_nondet_uint() [L12] COND FALSE !(!cond) [L27] B = __VERIFIER_nondet_uint() [L12] COND FALSE !(!cond) [L12] COND FALSE !(!cond) [L31] r = A [L32] d = B [L33] p = 1 [L34] q = 0 [L36] COND TRUE 1 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L40] COND FALSE !(!(r >= d)) [L42] d = 2 * d [L43] p = 2 * p [L36] COND TRUE 1 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L40] COND FALSE !(!(r >= d)) [L42] d = 2 * d [L43] p = 2 * p [L36] COND TRUE 1 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L40] COND FALSE !(!(r >= d)) [L42] d = 2 * d [L43] p = 2 * p [L36] COND TRUE 1 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L40] COND TRUE !(r >= d) [L46] COND TRUE 1 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L50] COND FALSE !(!(p != 1)) [L52] d = d / 2 [L53] p = p / 2 [L54] COND TRUE r >= d [L55] r = r - d [L56] q = q + p [L46] COND TRUE 1 [L15] COND FALSE !(!(cond)) [L15] COND TRUE !(cond) [L17] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 43 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 74.9s, OverallIterations: 17, TraceHistogramMax: 4, AutomataDifference: 53.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 442 SDtfs, 1781 SDslu, 1291 SDs, 0 SdLazy, 2862 SolverSat, 631 SolverUnsat, 13 SolverUnknown, 0 SolverNotchecked, 34.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 542 GetRequests, 317 SyntacticMatches, 3 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 641 ImplicationChecksByTransitivity, 29.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=112occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 16 MinimizatonAttempts, 161 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 14.2s InterpolantComputationTime, 472 NumberOfCodeBlocks, 458 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 456 ConstructedInterpolants, 0 QuantifiedInterpolants, 277004 SizeOfPredicates, 144 NumberOfNonLiveVariables, 1627 ConjunctsInSsa, 455 ConjunctsInUnsatCore, 16 InterpolantComputations, 6 PerfectInterpolantSequences, 55/260 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...