/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/divbin2_valuebound5.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 05:09:01,903 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 05:09:01,907 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 05:09:01,960 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 05:09:01,961 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 05:09:01,965 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 05:09:01,969 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 05:09:01,976 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 05:09:01,979 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 05:09:01,985 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 05:09:01,986 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 05:09:01,988 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 05:09:01,988 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 05:09:01,991 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 05:09:01,993 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 05:09:02,011 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 05:09:02,012 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 05:09:02,013 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 05:09:02,018 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 05:09:02,024 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 05:09:02,029 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 05:09:02,030 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 05:09:02,031 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 05:09:02,032 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 05:09:02,035 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 05:09:02,039 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 05:09:02,040 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 05:09:02,041 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 05:09:02,042 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 05:09:02,043 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 05:09:02,043 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 05:09:02,044 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 05:09:02,044 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 05:09:02,045 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 05:09:02,046 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 05:09:02,047 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 05:09:02,050 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 05:09:02,084 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 05:09:02,085 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 05:09:02,088 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 05:09:02,088 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 05:09:02,088 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 05:09:02,088 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 05:09:02,089 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 05:09:02,089 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 05:09:02,091 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 05:09:02,091 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 05:09:02,091 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 05:09:02,091 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 05:09:02,091 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 05:09:02,092 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 05:09:02,093 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 05:09:02,093 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 05:09:02,093 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 05:09:02,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:09:02,094 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 05:09:02,094 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 05:09:02,094 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 05:09:02,094 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 05:09:02,095 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 05:09:02,095 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 05:09:02,095 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 05:09:02,095 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 05:09:02,528 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 05:09:02,554 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 05:09:02,557 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 05:09:02,558 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 05:09:02,559 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 05:09:02,560 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/divbin2_valuebound5.i [2020-12-22 05:09:02,650 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac1dde712/7c8b8d259c3b4f7585d1129742ebaa48/FLAG773a982d2 [2020-12-22 05:09:03,309 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 05:09:03,310 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/divbin2_valuebound5.i [2020-12-22 05:09:03,320 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac1dde712/7c8b8d259c3b4f7585d1129742ebaa48/FLAG773a982d2 [2020-12-22 05:09:03,686 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac1dde712/7c8b8d259c3b4f7585d1129742ebaa48 [2020-12-22 05:09:03,690 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 05:09:03,692 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 05:09:03,693 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 05:09:03,694 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 05:09:03,697 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 05:09:03,698 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:09:03" (1/1) ... [2020-12-22 05:09:03,700 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c4aa238 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:09:03, skipping insertion in model container [2020-12-22 05:09:03,700 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:09:03" (1/1) ... [2020-12-22 05:09:03,709 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 05:09:03,725 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 05:09:03,876 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/divbin2_valuebound5.i[951,964] [2020-12-22 05:09:03,890 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:09:03,900 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 05:09:03,913 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/divbin2_valuebound5.i[951,964] [2020-12-22 05:09:03,919 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:09:03,936 INFO L208 MainTranslator]: Completed translation [2020-12-22 05:09:03,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:09:03 WrapperNode [2020-12-22 05:09:03,937 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 05:09:03,938 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 05:09:03,938 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 05:09:03,938 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 05:09:03,947 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:09:03" (1/1) ... [2020-12-22 05:09:03,955 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:09:03" (1/1) ... [2020-12-22 05:09:03,978 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 05:09:03,979 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 05:09:03,979 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 05:09:03,979 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 05:09:03,989 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:09:03" (1/1) ... [2020-12-22 05:09:03,989 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:09:03" (1/1) ... [2020-12-22 05:09:03,991 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:09:03" (1/1) ... [2020-12-22 05:09:03,991 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:09:03" (1/1) ... [2020-12-22 05:09:03,995 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:09:03" (1/1) ... [2020-12-22 05:09:04,000 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:09:03" (1/1) ... [2020-12-22 05:09:04,001 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:09:03" (1/1) ... [2020-12-22 05:09:04,004 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 05:09:04,005 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 05:09:04,005 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 05:09:04,005 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 05:09:04,006 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:09:03" (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 05:09:04,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 05:09:04,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 05:09:04,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 05:09:04,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 05:09:04,416 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 05:09:04,416 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2020-12-22 05:09:04,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:09:04 BoogieIcfgContainer [2020-12-22 05:09:04,418 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 05:09:04,420 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 05:09:04,420 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 05:09:04,424 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 05:09:04,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 05:09:03" (1/3) ... [2020-12-22 05:09:04,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29de7ce0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:09:04, skipping insertion in model container [2020-12-22 05:09:04,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:09:03" (2/3) ... [2020-12-22 05:09:04,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29de7ce0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:09:04, skipping insertion in model container [2020-12-22 05:09:04,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:09:04" (3/3) ... [2020-12-22 05:09:04,429 INFO L111 eAbstractionObserver]: Analyzing ICFG divbin2_valuebound5.i [2020-12-22 05:09:04,469 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 05:09:04,484 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-22 05:09:04,530 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-22 05:09:04,577 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 05:09:04,577 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 05:09:04,577 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 05:09:04,577 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 05:09:04,577 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 05:09:04,577 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 05:09:04,578 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 05:09:04,578 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 05:09:04,594 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-12-22 05:09:04,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-22 05:09:04,600 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:09:04,601 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:09:04,601 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:09:04,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:09:04,608 INFO L82 PathProgramCache]: Analyzing trace with hash 119520859, now seen corresponding path program 1 times [2020-12-22 05:09:04,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:09:04,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118367962] [2020-12-22 05:09:04,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:09:04,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:09:04,781 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 05:09:04,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118367962] [2020-12-22 05:09:04,783 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:09:04,783 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 05:09:04,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092957166] [2020-12-22 05:09:04,789 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 05:09:04,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:09:04,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 05:09:04,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 05:09:04,809 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2020-12-22 05:09:04,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:09:04,828 INFO L93 Difference]: Finished difference Result 37 states and 54 transitions. [2020-12-22 05:09:04,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 05:09:04,830 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-22 05:09:04,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:09:04,839 INFO L225 Difference]: With dead ends: 37 [2020-12-22 05:09:04,839 INFO L226 Difference]: Without dead ends: 16 [2020-12-22 05:09:04,842 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 05:09:04,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-12-22 05:09:04,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-12-22 05:09:04,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-12-22 05:09:04,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2020-12-22 05:09:04,884 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 8 [2020-12-22 05:09:04,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:09:04,885 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2020-12-22 05:09:04,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 05:09:04,885 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-12-22 05:09:04,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-22 05:09:04,886 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:09:04,886 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:09:04,886 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 05:09:04,887 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:09:04,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:09:04,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1186643548, now seen corresponding path program 1 times [2020-12-22 05:09:04,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:09:04,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971006844] [2020-12-22 05:09:04,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:09:04,912 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:09:04,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [95816722] [2020-12-22 05:09:04,913 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 05:09:05,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:09:05,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-22 05:09:05,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:09:05,273 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 05:09:05,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971006844] [2020-12-22 05:09:05,274 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:09:05,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95816722] [2020-12-22 05:09:05,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:09:05,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 05:09:05,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735428720] [2020-12-22 05:09:05,277 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:09:05,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:09:05,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:09:05,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:09:05,279 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 7 states. [2020-12-22 05:09:05,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:09:05,612 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2020-12-22 05:09:05,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 05:09:05,613 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 9 [2020-12-22 05:09:05,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:09:05,614 INFO L225 Difference]: With dead ends: 29 [2020-12-22 05:09:05,614 INFO L226 Difference]: Without dead ends: 23 [2020-12-22 05:09:05,615 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-12-22 05:09:05,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-22 05:09:05,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2020-12-22 05:09:05,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-12-22 05:09:05,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2020-12-22 05:09:05,628 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 9 [2020-12-22 05:09:05,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:09:05,628 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2020-12-22 05:09:05,628 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:09:05,628 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2020-12-22 05:09:05,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 05:09:05,629 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:09:05,629 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:09:05,830 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-22 05:09:05,831 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:09:05,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:09:05,832 INFO L82 PathProgramCache]: Analyzing trace with hash -2054849417, now seen corresponding path program 1 times [2020-12-22 05:09:05,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:09:05,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565065938] [2020-12-22 05:09:05,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:09:05,857 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:09:05,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [111417546] [2020-12-22 05:09:05,858 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 05:09:05,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:09:05,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-22 05:09:05,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:09:06,044 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:09:06,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565065938] [2020-12-22 05:09:06,045 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:09:06,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111417546] [2020-12-22 05:09:06,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:09:06,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 05:09:06,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013527566] [2020-12-22 05:09:06,046 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:09:06,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:09:06,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:09:06,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:09:06,048 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand 7 states. [2020-12-22 05:09:06,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:09:06,432 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2020-12-22 05:09:06,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:09:06,433 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2020-12-22 05:09:06,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:09:06,434 INFO L225 Difference]: With dead ends: 34 [2020-12-22 05:09:06,434 INFO L226 Difference]: Without dead ends: 28 [2020-12-22 05:09:06,435 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-12-22 05:09:06,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-12-22 05:09:06,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 25. [2020-12-22 05:09:06,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-12-22 05:09:06,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2020-12-22 05:09:06,442 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 11 [2020-12-22 05:09:06,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:09:06,442 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2020-12-22 05:09:06,442 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:09:06,442 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2020-12-22 05:09:06,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 05:09:06,443 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:09:06,443 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:09:06,657 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:09:06,658 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:09:06,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:09:06,659 INFO L82 PathProgramCache]: Analyzing trace with hash -580289007, now seen corresponding path program 1 times [2020-12-22 05:09:06,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:09:06,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811763527] [2020-12-22 05:09:06,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:09:06,675 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:09:06,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [554156238] [2020-12-22 05:09:06,676 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 05:09:06,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:09:06,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 05:09:06,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:09:06,757 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:09:06,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811763527] [2020-12-22 05:09:06,758 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:09:06,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554156238] [2020-12-22 05:09:06,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:09:06,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:09:06,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452138352] [2020-12-22 05:09:06,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:09:06,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:09:06,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:09:06,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:09:06,760 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand 3 states. [2020-12-22 05:09:06,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:09:06,787 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2020-12-22 05:09:06,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:09:06,788 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-12-22 05:09:06,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:09:06,789 INFO L225 Difference]: With dead ends: 35 [2020-12-22 05:09:06,789 INFO L226 Difference]: Without dead ends: 22 [2020-12-22 05:09:06,790 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:09:06,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-12-22 05:09:06,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-12-22 05:09:06,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-12-22 05:09:06,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2020-12-22 05:09:06,794 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 13 [2020-12-22 05:09:06,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:09:06,795 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2020-12-22 05:09:06,795 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:09:06,795 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2020-12-22 05:09:06,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-22 05:09:06,796 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:09:06,796 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:09:07,009 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:09:07,010 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:09:07,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:09:07,011 INFO L82 PathProgramCache]: Analyzing trace with hash 505525932, now seen corresponding path program 1 times [2020-12-22 05:09:07,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:09:07,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799235634] [2020-12-22 05:09:07,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:09:07,028 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:09:07,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [310976227] [2020-12-22 05:09:07,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:09:07,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:09:07,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 32 conjunts are in the unsatisfiable core [2020-12-22 05:09:07,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:09:07,292 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:09:07,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799235634] [2020-12-22 05:09:07,292 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:09:07,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310976227] [2020-12-22 05:09:07,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:09:07,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-22 05:09:07,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972006536] [2020-12-22 05:09:07,294 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 05:09:07,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:09:07,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 05:09:07,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:09:07,295 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 9 states. [2020-12-22 05:09:07,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:09:07,755 INFO L93 Difference]: Finished difference Result 49 states and 59 transitions. [2020-12-22 05:09:07,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 05:09:07,756 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-12-22 05:09:07,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:09:07,757 INFO L225 Difference]: With dead ends: 49 [2020-12-22 05:09:07,757 INFO L226 Difference]: Without dead ends: 33 [2020-12-22 05:09:07,758 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2020-12-22 05:09:07,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-12-22 05:09:07,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2020-12-22 05:09:07,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-22 05:09:07,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-12-22 05:09:07,764 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 15 [2020-12-22 05:09:07,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:09:07,764 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-12-22 05:09:07,764 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 05:09:07,764 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-12-22 05:09:07,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-22 05:09:07,765 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:09:07,765 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:09:07,980 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:09:07,981 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:09:07,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:09:07,982 INFO L82 PathProgramCache]: Analyzing trace with hash 296629383, now seen corresponding path program 2 times [2020-12-22 05:09:07,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:09:07,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242468273] [2020-12-22 05:09:07,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:09:08,002 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:09:08,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2049374263] [2020-12-22 05:09:08,003 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:09:08,061 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:09:08,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:09:08,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 32 conjunts are in the unsatisfiable core [2020-12-22 05:09:08,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:09:08,237 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:09:08,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242468273] [2020-12-22 05:09:08,238 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:09:08,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049374263] [2020-12-22 05:09:08,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:09:08,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-22 05:09:08,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075805261] [2020-12-22 05:09:08,239 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 05:09:08,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:09:08,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 05:09:08,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-12-22 05:09:08,241 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 10 states. [2020-12-22 05:09:08,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:09:08,540 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2020-12-22 05:09:08,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 05:09:08,541 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2020-12-22 05:09:08,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:09:08,542 INFO L225 Difference]: With dead ends: 59 [2020-12-22 05:09:08,542 INFO L226 Difference]: Without dead ends: 53 [2020-12-22 05:09:08,543 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2020-12-22 05:09:08,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-12-22 05:09:08,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 37. [2020-12-22 05:09:08,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-22 05:09:08,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2020-12-22 05:09:08,566 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 17 [2020-12-22 05:09:08,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:09:08,567 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2020-12-22 05:09:08,567 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 05:09:08,567 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2020-12-22 05:09:08,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-22 05:09:08,568 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:09:08,568 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:09:08,782 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-12-22 05:09:08,783 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:09:08,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:09:08,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1023135329, now seen corresponding path program 3 times [2020-12-22 05:09:08,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:09:08,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442665600] [2020-12-22 05:09:08,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:09:08,813 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:09:08,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1921313077] [2020-12-22 05:09:08,814 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 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 05:09:08,891 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-22 05:09:08,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:09:08,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-22 05:09:08,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:09:09,060 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:09:09,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442665600] [2020-12-22 05:09:09,061 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:09:09,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921313077] [2020-12-22 05:09:09,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:09:09,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-22 05:09:09,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714287252] [2020-12-22 05:09:09,062 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:09:09,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:09:09,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:09:09,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:09:09,063 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand 6 states. [2020-12-22 05:09:09,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:09:09,129 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2020-12-22 05:09:09,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:09:09,130 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-12-22 05:09:09,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:09:09,131 INFO L225 Difference]: With dead ends: 50 [2020-12-22 05:09:09,131 INFO L226 Difference]: Without dead ends: 33 [2020-12-22 05:09:09,132 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:09:09,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-12-22 05:09:09,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-12-22 05:09:09,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-22 05:09:09,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2020-12-22 05:09:09,138 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 19 [2020-12-22 05:09:09,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:09:09,138 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2020-12-22 05:09:09,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:09:09,138 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2020-12-22 05:09:09,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-22 05:09:09,139 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:09:09,139 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:09:09,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:09:09,355 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:09:09,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:09:09,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1410508706, now seen corresponding path program 4 times [2020-12-22 05:09:09,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:09:09,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931362719] [2020-12-22 05:09:09,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:09:09,373 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:09:09,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1200816458] [2020-12-22 05:09:09,374 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 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 05:09:09,466 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-22 05:09:09,466 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:09:09,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 31 conjunts are in the unsatisfiable core [2020-12-22 05:09:09,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:09:09,672 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:09:09,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931362719] [2020-12-22 05:09:09,673 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:09:09,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200816458] [2020-12-22 05:09:09,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:09:09,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-22 05:09:09,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470253810] [2020-12-22 05:09:09,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 05:09:09,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:09:09,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 05:09:09,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-12-22 05:09:09,676 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand 10 states. [2020-12-22 05:09:10,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:09:10,311 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2020-12-22 05:09:10,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 05:09:10,312 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 19 [2020-12-22 05:09:10,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:09:10,313 INFO L225 Difference]: With dead ends: 59 [2020-12-22 05:09:10,313 INFO L226 Difference]: Without dead ends: 53 [2020-12-22 05:09:10,314 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=100, Invalid=320, Unknown=0, NotChecked=0, Total=420 [2020-12-22 05:09:10,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-12-22 05:09:10,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 27. [2020-12-22 05:09:10,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-22 05:09:10,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2020-12-22 05:09:10,319 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 19 [2020-12-22 05:09:10,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:09:10,320 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2020-12-22 05:09:10,320 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 05:09:10,320 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2020-12-22 05:09:10,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-22 05:09:10,321 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:09:10,321 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:09:10,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:09:10,536 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:09:10,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:09:10,541 INFO L82 PathProgramCache]: Analyzing trace with hash 2014308028, now seen corresponding path program 5 times [2020-12-22 05:09:10,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:09:10,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498197403] [2020-12-22 05:09:10,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:09:10,567 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:09:10,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1004214655] [2020-12-22 05:09:10,567 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 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 05:09:10,897 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-12-22 05:09:10,897 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:09:10,899 WARN L261 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 45 conjunts are in the unsatisfiable core [2020-12-22 05:09:10,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:09:11,268 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 24 [2020-12-22 05:09:11,407 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:09:11,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498197403] [2020-12-22 05:09:11,409 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:09:11,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004214655] [2020-12-22 05:09:11,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:09:11,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-12-22 05:09:11,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457043854] [2020-12-22 05:09:11,413 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 05:09:11,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:09:11,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 05:09:11,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-12-22 05:09:11,414 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 12 states. [2020-12-22 05:09:11,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:09:11,807 INFO L93 Difference]: Finished difference Result 66 states and 79 transitions. [2020-12-22 05:09:11,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 05:09:11,808 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 21 [2020-12-22 05:09:11,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:09:11,808 INFO L225 Difference]: With dead ends: 66 [2020-12-22 05:09:11,809 INFO L226 Difference]: Without dead ends: 45 [2020-12-22 05:09:11,809 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2020-12-22 05:09:11,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-12-22 05:09:11,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 37. [2020-12-22 05:09:11,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-22 05:09:11,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2020-12-22 05:09:11,817 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 21 [2020-12-22 05:09:11,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:09:11,817 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2020-12-22 05:09:11,817 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 05:09:11,817 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2020-12-22 05:09:11,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-22 05:09:11,818 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:09:11,818 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:09:12,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-12-22 05:09:12,022 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:09:12,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:09:12,023 INFO L82 PathProgramCache]: Analyzing trace with hash 1048532055, now seen corresponding path program 6 times [2020-12-22 05:09:12,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:09:12,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163117247] [2020-12-22 05:09:12,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:09:12,052 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:09:12,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [754625019] [2020-12-22 05:09:12,056 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE 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 05:09:12,212 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-12-22 05:09:12,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:09:12,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 28 conjunts are in the unsatisfiable core [2020-12-22 05:09:12,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:09:12,484 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:09:12,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163117247] [2020-12-22 05:09:12,484 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:09:12,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754625019] [2020-12-22 05:09:12,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:09:12,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-22 05:09:12,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668656643] [2020-12-22 05:09:12,485 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 05:09:12,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:09:12,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 05:09:12,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-12-22 05:09:12,486 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand 11 states. [2020-12-22 05:09:13,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:09:13,010 INFO L93 Difference]: Finished difference Result 79 states and 89 transitions. [2020-12-22 05:09:13,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 05:09:13,010 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 23 [2020-12-22 05:09:13,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:09:13,011 INFO L225 Difference]: With dead ends: 79 [2020-12-22 05:09:13,011 INFO L226 Difference]: Without dead ends: 60 [2020-12-22 05:09:13,012 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2020-12-22 05:09:13,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-12-22 05:09:13,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 41. [2020-12-22 05:09:13,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-12-22 05:09:13,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2020-12-22 05:09:13,021 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 23 [2020-12-22 05:09:13,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:09:13,021 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2020-12-22 05:09:13,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 05:09:13,022 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2020-12-22 05:09:13,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-22 05:09:13,022 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:09:13,023 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:09:13,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:09:13,237 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:09:13,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:09:13,237 INFO L82 PathProgramCache]: Analyzing trace with hash 1048591637, now seen corresponding path program 1 times [2020-12-22 05:09:13,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:09:13,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319900167] [2020-12-22 05:09:13,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:09:13,250 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:09:13,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1996417426] [2020-12-22 05:09:13,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 05:09:13,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:09:13,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 41 conjunts are in the unsatisfiable core [2020-12-22 05:09:13,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:09:13,650 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:09:13,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319900167] [2020-12-22 05:09:13,651 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:09:13,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996417426] [2020-12-22 05:09:13,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:09:13,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-12-22 05:09:13,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798554648] [2020-12-22 05:09:13,652 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 05:09:13,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:09:13,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 05:09:13,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-12-22 05:09:13,653 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand 12 states. [2020-12-22 05:09:14,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:09:14,385 INFO L93 Difference]: Finished difference Result 52 states and 56 transitions. [2020-12-22 05:09:14,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 05:09:14,386 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-12-22 05:09:14,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:09:14,387 INFO L225 Difference]: With dead ends: 52 [2020-12-22 05:09:14,387 INFO L226 Difference]: Without dead ends: 46 [2020-12-22 05:09:14,387 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=117, Invalid=435, Unknown=0, NotChecked=0, Total=552 [2020-12-22 05:09:14,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-12-22 05:09:14,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 41. [2020-12-22 05:09:14,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-12-22 05:09:14,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2020-12-22 05:09:14,395 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 23 [2020-12-22 05:09:14,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:09:14,395 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2020-12-22 05:09:14,395 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 05:09:14,395 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2020-12-22 05:09:14,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-22 05:09:14,396 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:09:14,396 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:09:14,610 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:09:14,611 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:09:14,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:09:14,612 INFO L82 PathProgramCache]: Analyzing trace with hash -1791789455, now seen corresponding path program 7 times [2020-12-22 05:09:14,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:09:14,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131477040] [2020-12-22 05:09:14,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:09:14,623 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:09:14,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [371068699] [2020-12-22 05:09:14,623 INFO L93 rtionOrderModulation]: Changing assertion order to 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 05:09:14,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:09:14,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-22 05:09:14,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:09:15,035 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:09:15,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131477040] [2020-12-22 05:09:15,039 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:09:15,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371068699] [2020-12-22 05:09:15,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:09:15,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 05:09:15,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707246055] [2020-12-22 05:09:15,042 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:09:15,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:09:15,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:09:15,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:09:15,044 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand 8 states. [2020-12-22 05:09:15,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:09:15,135 INFO L93 Difference]: Finished difference Result 54 states and 58 transitions. [2020-12-22 05:09:15,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 05:09:15,136 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2020-12-22 05:09:15,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:09:15,136 INFO L225 Difference]: With dead ends: 54 [2020-12-22 05:09:15,136 INFO L226 Difference]: Without dead ends: 33 [2020-12-22 05:09:15,138 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:09:15,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-12-22 05:09:15,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-12-22 05:09:15,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-22 05:09:15,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2020-12-22 05:09:15,150 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 25 [2020-12-22 05:09:15,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:09:15,150 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2020-12-22 05:09:15,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:09:15,150 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2020-12-22 05:09:15,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-22 05:09:15,154 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:09:15,154 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:09:15,361 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-12-22 05:09:15,361 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:09:15,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:09:15,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1684994122, now seen corresponding path program 2 times [2020-12-22 05:09:15,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:09:15,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271410893] [2020-12-22 05:09:15,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:09:15,386 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:09:15,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [703209433] [2020-12-22 05:09:15,389 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 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 05:09:15,978 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:09:15,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:09:15,980 WARN L261 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 59 conjunts are in the unsatisfiable core [2020-12-22 05:09:15,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:09:16,564 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:09:16,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271410893] [2020-12-22 05:09:16,566 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:09:16,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703209433] [2020-12-22 05:09:16,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:09:16,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-12-22 05:09:16,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181750643] [2020-12-22 05:09:16,567 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-22 05:09:16,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:09:16,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-22 05:09:16,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-12-22 05:09:16,570 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 15 states. [2020-12-22 05:09:17,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:09:17,554 INFO L93 Difference]: Finished difference Result 50 states and 55 transitions. [2020-12-22 05:09:17,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 05:09:17,555 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 27 [2020-12-22 05:09:17,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:09:17,555 INFO L225 Difference]: With dead ends: 50 [2020-12-22 05:09:17,555 INFO L226 Difference]: Without dead ends: 42 [2020-12-22 05:09:17,556 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=126, Invalid=576, Unknown=0, NotChecked=0, Total=702 [2020-12-22 05:09:17,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-12-22 05:09:17,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 37. [2020-12-22 05:09:17,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-22 05:09:17,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2020-12-22 05:09:17,562 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 27 [2020-12-22 05:09:17,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:09:17,562 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2020-12-22 05:09:17,562 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-22 05:09:17,562 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2020-12-22 05:09:17,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 05:09:17,563 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:09:17,563 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:09:17,767 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-22 05:09:17,767 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:09:17,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:09:17,768 INFO L82 PathProgramCache]: Analyzing trace with hash 829624575, now seen corresponding path program 3 times [2020-12-22 05:09:17,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:09:17,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306559630] [2020-12-22 05:09:17,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:09:17,779 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:09:17,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1244262495] [2020-12-22 05:09:17,780 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 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 05:09:43,747 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-12-22 05:09:43,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:09:43,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 53 conjunts are in the unsatisfiable core [2020-12-22 05:09:43,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:09:44,241 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 11 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:09:44,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306559630] [2020-12-22 05:09:44,245 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:09:44,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244262495] [2020-12-22 05:09:44,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:09:44,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-12-22 05:09:44,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625549407] [2020-12-22 05:09:44,248 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-22 05:09:44,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:09:44,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-22 05:09:44,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-12-22 05:09:44,250 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 14 states. [2020-12-22 05:09:45,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:09:45,100 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2020-12-22 05:09:45,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 05:09:45,101 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 31 [2020-12-22 05:09:45,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:09:45,101 INFO L225 Difference]: With dead ends: 37 [2020-12-22 05:09:45,101 INFO L226 Difference]: Without dead ends: 0 [2020-12-22 05:09:45,102 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=110, Invalid=490, Unknown=0, NotChecked=0, Total=600 [2020-12-22 05:09:45,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-22 05:09:45,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-22 05:09:45,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-22 05:09:45,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-22 05:09:45,103 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2020-12-22 05:09:45,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:09:45,103 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-22 05:09:45,103 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-22 05:09:45,103 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-22 05:09:45,103 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-22 05:09:45,311 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-22 05:09:45,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-22 05:09:45,682 WARN L197 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 40 [2020-12-22 05:09:47,978 WARN L197 SmtUtils]: Spent 2.29 s on a formula simplification. DAG size of input: 127 DAG size of output: 100 [2020-12-22 05:09:47,983 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2020-12-22 05:09:47,983 INFO L189 CegarLoopUtils]: For program point L19(lines 19 22) no Hoare annotation was computed. [2020-12-22 05:09:47,984 INFO L185 CegarLoopUtils]: At program point L19-2(line 40) the Hoare annotation is: (let ((.cse26 (mod ULTIMATE.start_main_~A~0 4294967296)) (.cse27 (* ULTIMATE.start_main_~B~0 4))) (let ((.cse5 (mod .cse27 4294967296)) (.cse23 (= ULTIMATE.start_main_~b~0 1)) (.cse11 (= ULTIMATE.start_main_~q~0 1)) (.cse16 (<= .cse26 5)) (.cse12 (= ULTIMATE.start_main_~A~0 (+ ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~b~0))) (.cse25 (= ULTIMATE.start_main_~q~0 2)) (.cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse3 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse13 (< .cse26 4)) (.cse6 (mod ULTIMATE.start_main_~r~0 4294967296)) (.cse19 (mod ULTIMATE.start_main_~b~0 4294967296))) (let ((.cse10 (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~b~0)) (.cse9 (< .cse6 .cse19)) (.cse0 (<= 1 .cse6)) (.cse2 (= ULTIMATE.start_main_~q~0 0)) (.cse15 (* ULTIMATE.start_main_~B~0 2)) (.cse4 (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0)) (.cse14 (= ULTIMATE.start_main_~b~0 2)) (.cse17 (<= 4 .cse26)) (.cse18 (= ULTIMATE.start_main_~A~0 (+ ULTIMATE.start_main_~r~0 4))) (.cse24 (or (and .cse23 (<= 2 .cse26) .cse1 (= ULTIMATE.start_main_~q~0 3) (= ULTIMATE.start_main_~A~0 (+ ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~b~0 2)) .cse3 .cse13) (and .cse11 .cse16 .cse1 .cse12 .cse3) (let ((.cse28 (mod (+ ULTIMATE.start_main_~A~0 (* ULTIMATE.start_main_~r~0 4294967295)) 4294967296))) (and .cse25 .cse1 (= (div .cse28 2) ULTIMATE.start_main_~b~0) (= ULTIMATE.start_main_~A~0 (+ ULTIMATE.start_main_~r~0 2)) (<= .cse28 .cse26) .cse3 .cse13)))) (.cse21 (= ULTIMATE.start_main_~b~0 .cse27)) (.cse22 (= ULTIMATE.start_main_~b~0 4)) (.cse8 (= ULTIMATE.start_main_~B~0 1)) (.cse20 (div .cse5 2)) (.cse7 (<= .cse6 5))) (or (and .cse0 .cse1 (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~B~0 8)) (= ULTIMATE.start_main_~b~0 8) .cse2 .cse3 .cse4 (<= .cse5 .cse6) .cse7) (and .cse8 .cse9 .cse1 .cse10 .cse2 .cse3 .cse4) (and .cse8 .cse11 .cse1 .cse10 .cse12 .cse3 .cse13) (and .cse14 .cse9 (<= (mod ULTIMATE.start_main_~B~0 4294967296) .cse6) .cse1 .cse2 .cse3 (= .cse15 ULTIMATE.start_main_~b~0) .cse4) (and .cse8 .cse16 .cse1 .cse3 (or (and .cse17 .cse18 (= ULTIMATE.start_main_~q~0 4)) (and (= ULTIMATE.start_main_~q~0 5) (<= .cse19 (mod (+ ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~r~0) 4294967296)) .cse17 (= (+ ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~r~0 4) ULTIMATE.start_main_~A~0))) (= (div (mod .cse20 4294967296) 2) ULTIMATE.start_main_~b~0)) (and .cse9 .cse0 .cse21 .cse1 .cse22 .cse2 .cse3 (<= (mod .cse15 4294967296) .cse6) .cse4) (and .cse8 (or (and .cse23 .cse24 .cse7) (and .cse14 .cse16 .cse25 .cse1 .cse17 .cse3 .cse18))) (and .cse24 .cse21 .cse22 (<= .cse19 .cse26)) (and .cse8 .cse11 .cse1 .cse12 .cse3 (= ULTIMATE.start_main_~b~0 .cse20) .cse13 .cse7))))) [2020-12-22 05:09:47,984 INFO L189 CegarLoopUtils]: For program point L19-3(lines 19 22) no Hoare annotation was computed. [2020-12-22 05:09:47,984 INFO L189 CegarLoopUtils]: For program point L15(lines 15 17) no Hoare annotation was computed. [2020-12-22 05:09:47,984 INFO L192 CegarLoopUtils]: At program point L19-5(lines 18 24) the Hoare annotation is: true [2020-12-22 05:09:47,984 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-22 05:09:47,984 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-22 05:09:47,984 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-22 05:09:47,984 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2020-12-22 05:09:47,985 INFO L189 CegarLoopUtils]: For program point L20(lines 20 21) no Hoare annotation was computed. [2020-12-22 05:09:47,985 INFO L189 CegarLoopUtils]: For program point L20-1(lines 20 21) no Hoare annotation was computed. [2020-12-22 05:09:47,985 INFO L192 CegarLoopUtils]: At program point L49(lines 25 50) the Hoare annotation is: true [2020-12-22 05:09:47,985 INFO L189 CegarLoopUtils]: For program point L16(line 16) no Hoare annotation was computed. [2020-12-22 05:09:47,985 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-22 05:09:47,985 INFO L189 CegarLoopUtils]: For program point L38-1(lines 38 47) no Hoare annotation was computed. [2020-12-22 05:09:47,985 INFO L185 CegarLoopUtils]: At program point L34-2(lines 34 37) the Hoare annotation is: (let ((.cse3 (mod ULTIMATE.start_main_~r~0 4294967296))) (let ((.cse2 (* ULTIMATE.start_main_~B~0 2)) (.cse1 (= ULTIMATE.start_main_~q~0 0)) (.cse4 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse5 (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0)) (.cse0 (* ULTIMATE.start_main_~B~0 4)) (.cse6 (<= .cse3 5))) (or (and (= ULTIMATE.start_main_~b~0 .cse0) (= ULTIMATE.start_main_~b~0 4) .cse1 (<= (mod .cse2 4294967296) .cse3) .cse4 .cse5 .cse6) (and (= ULTIMATE.start_main_~B~0 1) (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~b~0) .cse1 .cse4 .cse5 .cse6) (and (= ULTIMATE.start_main_~b~0 2) (<= (mod ULTIMATE.start_main_~B~0 4294967296) .cse3) .cse1 .cse4 (= .cse2 ULTIMATE.start_main_~b~0) .cse5 .cse6) (and (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~B~0 8)) (= ULTIMATE.start_main_~b~0 8) .cse1 .cse4 .cse5 (<= (mod .cse0 4294967296) .cse3) .cse6)))) [2020-12-22 05:09:47,985 INFO L189 CegarLoopUtils]: For program point L43(lines 43 46) no Hoare annotation was computed. [2020-12-22 05:09:47,985 INFO L189 CegarLoopUtils]: For program point L43-2(lines 25 50) no Hoare annotation was computed. [2020-12-22 05:09:47,985 INFO L189 CegarLoopUtils]: For program point L35(line 35) no Hoare annotation was computed. [2020-12-22 05:09:48,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 05:09:48 BoogieIcfgContainer [2020-12-22 05:09:48,013 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 05:09:48,013 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 05:09:48,013 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 05:09:48,014 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 05:09:48,014 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:09:04" (3/4) ... [2020-12-22 05:09:48,018 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-22 05:09:48,029 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-12-22 05:09:48,029 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-22 05:09:48,029 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 05:09:48,030 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 05:09:48,082 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/nla-digbench-scaling/divbin2_valuebound5.i-witness.graphml [2020-12-22 05:09:48,083 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 05:09:48,084 INFO L168 Benchmark]: Toolchain (without parser) took 44392.20 ms. Allocated memory was 152.0 MB in the beginning and 219.2 MB in the end (delta: 67.1 MB). Free memory was 127.6 MB in the beginning and 176.0 MB in the end (delta: -48.3 MB). Peak memory consumption was 20.1 MB. Max. memory is 8.0 GB. [2020-12-22 05:09:48,084 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 152.0 MB. Free memory is still 123.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 05:09:48,085 INFO L168 Benchmark]: CACSL2BoogieTranslator took 243.63 ms. Allocated memory is still 152.0 MB. Free memory was 127.4 MB in the beginning and 117.6 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-22 05:09:48,085 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.20 ms. Allocated memory is still 152.0 MB. Free memory was 117.6 MB in the beginning and 116.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 05:09:48,086 INFO L168 Benchmark]: Boogie Preprocessor took 25.17 ms. Allocated memory is still 152.0 MB. Free memory was 116.1 MB in the beginning and 115.0 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 05:09:48,086 INFO L168 Benchmark]: RCFGBuilder took 413.66 ms. Allocated memory is still 152.0 MB. Free memory was 115.0 MB in the beginning and 102.2 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-12-22 05:09:48,087 INFO L168 Benchmark]: TraceAbstraction took 43592.77 ms. Allocated memory was 152.0 MB in the beginning and 219.2 MB in the end (delta: 67.1 MB). Free memory was 101.8 MB in the beginning and 179.1 MB in the end (delta: -77.3 MB). Peak memory consumption was 94.0 MB. Max. memory is 8.0 GB. [2020-12-22 05:09:48,087 INFO L168 Benchmark]: Witness Printer took 69.36 ms. Allocated memory is still 219.2 MB. Free memory was 179.1 MB in the beginning and 176.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-22 05:09:48,093 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 152.0 MB. Free memory is still 123.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 243.63 ms. Allocated memory is still 152.0 MB. Free memory was 127.4 MB in the beginning and 117.6 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 40.20 ms. Allocated memory is still 152.0 MB. Free memory was 117.6 MB in the beginning and 116.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 25.17 ms. Allocated memory is still 152.0 MB. Free memory was 116.1 MB in the beginning and 115.0 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 413.66 ms. Allocated memory is still 152.0 MB. Free memory was 115.0 MB in the beginning and 102.2 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 43592.77 ms. Allocated memory was 152.0 MB in the beginning and 219.2 MB in the end (delta: 67.1 MB). Free memory was 101.8 MB in the beginning and 179.1 MB in the end (delta: -77.3 MB). Peak memory consumption was 94.0 MB. Max. memory is 8.0 GB. * Witness Printer took 69.36 ms. Allocated memory is still 219.2 MB. Free memory was 179.1 MB in the beginning and 176.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 21]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 21]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: ((((((((b == B * 4 && b == 4) && q == 0) && B * 2 % 4294967296 <= r % 4294967296) && cond == 1) && A == r) && r % 4294967296 <= 5) || (((((B == 1 && B == b) && q == 0) && cond == 1) && A == r) && r % 4294967296 <= 5)) || ((((((b == 2 && B % 4294967296 <= r % 4294967296) && q == 0) && cond == 1) && B * 2 == b) && A == r) && r % 4294967296 <= 5)) || ((((((b == B * 8 && b == 8) && q == 0) && cond == 1) && A == r) && B * 4 % 4294967296 <= r % 4294967296) && r % 4294967296 <= 5) - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: (((((((((((((((1 <= r % 4294967296 && 1 == cond) && b == B * 8) && b == 8) && q == 0) && cond == 1) && A == r) && B * 4 % 4294967296 <= r % 4294967296) && r % 4294967296 <= 5) || ((((((B == 1 && r % 4294967296 < b % 4294967296) && 1 == cond) && B == b) && q == 0) && cond == 1) && A == r)) || ((((((B == 1 && q == 1) && 1 == cond) && B == b) && A == r + b) && cond == 1) && A % 4294967296 < 4)) || (((((((b == 2 && r % 4294967296 < b % 4294967296) && B % 4294967296 <= r % 4294967296) && 1 == cond) && q == 0) && cond == 1) && B * 2 == b) && A == r)) || (((((B == 1 && A % 4294967296 <= 5) && 1 == cond) && cond == 1) && (((4 <= A % 4294967296 && A == r + 4) && q == 4) || (((q == 5 && b % 4294967296 <= (b + r) % 4294967296) && 4 <= A % 4294967296) && b + r + 4 == A))) && B * 4 % 4294967296 / 2 % 4294967296 / 2 == b)) || ((((((((r % 4294967296 < b % 4294967296 && 1 <= r % 4294967296) && b == B * 4) && 1 == cond) && b == 4) && q == 0) && cond == 1) && B * 2 % 4294967296 <= r % 4294967296) && A == r)) || (B == 1 && (((b == 1 && ((((((((b == 1 && 2 <= A % 4294967296) && 1 == cond) && q == 3) && A == r + b + 2) && cond == 1) && A % 4294967296 < 4) || ((((q == 1 && A % 4294967296 <= 5) && 1 == cond) && A == r + b) && cond == 1)) || ((((((q == 2 && 1 == cond) && (A + r * 4294967295) % 4294967296 / 2 == b) && A == r + 2) && (A + r * 4294967295) % 4294967296 <= A % 4294967296) && cond == 1) && A % 4294967296 < 4))) && r % 4294967296 <= 5) || ((((((b == 2 && A % 4294967296 <= 5) && q == 2) && 1 == cond) && 4 <= A % 4294967296) && cond == 1) && A == r + 4)))) || (((((((((((b == 1 && 2 <= A % 4294967296) && 1 == cond) && q == 3) && A == r + b + 2) && cond == 1) && A % 4294967296 < 4) || ((((q == 1 && A % 4294967296 <= 5) && 1 == cond) && A == r + b) && cond == 1)) || ((((((q == 2 && 1 == cond) && (A + r * 4294967295) % 4294967296 / 2 == b) && A == r + 2) && (A + r * 4294967295) % 4294967296 <= A % 4294967296) && cond == 1) && A % 4294967296 < 4)) && b == B * 4) && b == 4) && b % 4294967296 <= A % 4294967296)) || (((((((B == 1 && q == 1) && 1 == cond) && A == r + b) && cond == 1) && b == B * 4 % 4294967296 / 2) && A % 4294967296 < 4) && r % 4294967296 <= 5) - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 40.7s, OverallIterations: 14, TraceHistogramMax: 5, AutomataDifference: 5.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 180 SDtfs, 556 SDslu, 624 SDs, 0 SdLazy, 1608 SolverSat, 258 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 323 GetRequests, 139 SyntacticMatches, 5 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 404 ImplicationChecksByTransitivity, 5.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 14 MinimizatonAttempts, 86 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 20 NumberOfFragments, 634 HoareAnnotationTreeSize, 4 FomulaSimplifications, 1483 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 4 FomulaSimplificationsInter, 871 FormulaSimplificationTreeSizeReductionInter, 2.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 27.4s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 261 NumberOfCodeBlocks, 261 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 247 ConstructedInterpolants, 0 QuantifiedInterpolants, 79367 SizeOfPredicates, 84 NumberOfNonLiveVariables, 1051 ConjunctsInSsa, 400 ConjunctsInUnsatCore, 14 InterpolantComputations, 3 PerfectInterpolantSequences, 30/192 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...