/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/cohendiv-ll_valuebound100.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 17:21:55,785 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 17:21:55,788 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 17:21:55,836 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 17:21:55,836 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 17:21:55,840 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 17:21:55,845 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 17:21:55,851 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 17:21:55,855 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 17:21:55,861 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 17:21:55,865 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 17:21:55,867 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 17:21:55,868 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 17:21:55,871 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 17:21:55,873 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 17:21:55,875 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 17:21:55,877 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 17:21:55,880 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 17:21:55,888 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 17:21:55,908 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 17:21:55,910 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 17:21:55,912 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 17:21:55,914 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 17:21:55,917 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 17:21:55,923 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 17:21:55,941 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 17:21:55,942 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 17:21:55,942 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 17:21:55,943 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 17:21:55,996 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 17:21:55,997 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 17:21:56,002 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 17:21:56,002 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 17:21:56,002 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 17:21:56,003 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 17:21:56,003 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 17:21:56,003 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 17:21:56,003 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 17:21:56,003 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 17:21:56,004 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 17:21:56,005 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 17:21:56,005 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 17:21:56,005 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 17:21:56,006 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 17:21:56,006 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 17:21:56,006 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 17:21:56,006 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:21:56,006 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 17:21:56,007 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 17:21:56,007 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 17:21:56,007 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 17:21:56,007 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 17:21:56,007 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 17:21:56,008 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 17:21:56,008 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-bitabs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 17:21:56,424 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 17:21:56,453 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 17:21:56,456 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 17:21:56,457 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 17:21:56,458 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 17:21:56,459 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound100.c [2021-01-06 17:21:56,532 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/1f3655e3c/517f87e2bbec482fbf63b9bd22a609b2/FLAGdd6625107 [2021-01-06 17:21:57,279 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 17:21:57,280 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound100.c [2021-01-06 17:21:57,295 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/1f3655e3c/517f87e2bbec482fbf63b9bd22a609b2/FLAGdd6625107 [2021-01-06 17:21:57,618 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/1f3655e3c/517f87e2bbec482fbf63b9bd22a609b2 [2021-01-06 17:21:57,621 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 17:21:57,626 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 17:21:57,630 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 17:21:57,630 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 17:21:57,634 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 17:21:57,635 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:21:57" (1/1) ... [2021-01-06 17:21:57,636 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50795c54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:21:57, skipping insertion in model container [2021-01-06 17:21:57,637 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:21:57" (1/1) ... [2021-01-06 17:21:57,645 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 17:21:57,662 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 17:21:57,817 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound100.c[576,589] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] [2021-01-06 17:21:57,838 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:21:57,849 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 17:21:57,863 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound100.c[576,589] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] [2021-01-06 17:21:57,873 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:21:57,890 INFO L208 MainTranslator]: Completed translation [2021-01-06 17:21:57,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:21:57 WrapperNode [2021-01-06 17:21:57,890 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 17:21:57,892 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 17:21:57,892 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 17:21:57,892 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 17:21:57,900 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:21:57" (1/1) ... [2021-01-06 17:21:57,908 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:21:57" (1/1) ... [2021-01-06 17:21:57,932 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 17:21:57,933 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 17:21:57,933 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 17:21:57,933 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 17:21:57,942 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:21:57" (1/1) ... [2021-01-06 17:21:57,942 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:21:57" (1/1) ... [2021-01-06 17:21:57,944 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:21:57" (1/1) ... [2021-01-06 17:21:57,945 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:21:57" (1/1) ... [2021-01-06 17:21:57,957 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:21:57" (1/1) ... [2021-01-06 17:21:57,971 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:21:57" (1/1) ... [2021-01-06 17:21:57,973 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:21:57" (1/1) ... [2021-01-06 17:21:57,980 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 17:21:57,981 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 17:21:57,981 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 17:21:57,982 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 17:21:57,983 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:21:57" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-06 17:21:58,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 17:21:58,084 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 17:21:58,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 17:21:58,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 17:21:58,418 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 17:21:58,418 INFO L299 CfgBuilder]: Removed 26 assume(true) statements. [2021-01-06 17:21:58,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:21:58 BoogieIcfgContainer [2021-01-06 17:21:58,424 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 17:21:58,426 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 17:21:58,426 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 17:21:58,457 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 17:21:58,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 05:21:57" (1/3) ... [2021-01-06 17:21:58,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@620adeda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:21:58, skipping insertion in model container [2021-01-06 17:21:58,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:21:57" (2/3) ... [2021-01-06 17:21:58,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@620adeda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:21:58, skipping insertion in model container [2021-01-06 17:21:58,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:21:58" (3/3) ... [2021-01-06 17:21:58,469 INFO L111 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_valuebound100.c [2021-01-06 17:21:58,485 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 17:21:58,492 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2021-01-06 17:21:58,515 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-01-06 17:21:58,549 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 17:21:58,549 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 17:21:58,549 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 17:21:58,550 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 17:21:58,550 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 17:21:58,550 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 17:21:58,550 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 17:21:58,550 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 17:21:58,570 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2021-01-06 17:21:58,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-06 17:21:58,576 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:21:58,577 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:21:58,578 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:21:58,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:21:58,584 INFO L82 PathProgramCache]: Analyzing trace with hash 330581779, now seen corresponding path program 1 times [2021-01-06 17:21:58,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:21:58,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250085864] [2021-01-06 17:21:58,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:21:58,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:21:58,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:21:58,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250085864] [2021-01-06 17:21:58,814 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:21:58,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 17:21:58,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72663705] [2021-01-06 17:21:58,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 17:21:58,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:21:58,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 17:21:58,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 17:21:58,848 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2021-01-06 17:21:58,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:21:58,893 INFO L93 Difference]: Finished difference Result 83 states and 112 transitions. [2021-01-06 17:21:58,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 17:21:58,894 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2021-01-06 17:21:58,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:21:58,903 INFO L225 Difference]: With dead ends: 83 [2021-01-06 17:21:58,903 INFO L226 Difference]: Without dead ends: 39 [2021-01-06 17:21:58,907 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 [2021-01-06 17:21:58,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-01-06 17:21:58,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-01-06 17:21:58,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2021-01-06 17:21:58,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2021-01-06 17:21:58,949 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 11 [2021-01-06 17:21:58,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:21:58,950 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2021-01-06 17:21:58,950 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 17:21:58,950 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2021-01-06 17:21:58,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-06 17:21:58,951 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:21:58,951 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:21:58,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 17:21:58,952 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:21:58,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:21:58,953 INFO L82 PathProgramCache]: Analyzing trace with hash -1507472743, now seen corresponding path program 1 times [2021-01-06 17:21:58,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:21:58,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213981901] [2021-01-06 17:21:58,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:21:58,977 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:21:58,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [705407383] [2021-01-06 17:21:58,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-06 17:21:59,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:21:59,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 25 conjunts are in the unsatisfiable core [2021-01-06 17:21:59,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:21:59,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:21:59,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213981901] [2021-01-06 17:21:59,254 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:21:59,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705407383] [2021-01-06 17:21:59,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:21:59,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-01-06 17:21:59,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303576352] [2021-01-06 17:21:59,256 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 17:21:59,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:21:59,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 17:21:59,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:21:59,259 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand 9 states. [2021-01-06 17:21:59,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:21:59,583 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2021-01-06 17:21:59,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 17:21:59,584 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 11 [2021-01-06 17:21:59,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:21:59,585 INFO L225 Difference]: With dead ends: 52 [2021-01-06 17:21:59,586 INFO L226 Difference]: Without dead ends: 50 [2021-01-06 17:21:59,587 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-01-06 17:21:59,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-01-06 17:21:59,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 41. [2021-01-06 17:21:59,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2021-01-06 17:21:59,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2021-01-06 17:21:59,597 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 11 [2021-01-06 17:21:59,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:21:59,597 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2021-01-06 17:21:59,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 17:21:59,598 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2021-01-06 17:21:59,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-06 17:21:59,598 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:21:59,599 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:21:59,812 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-01-06 17:21:59,813 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:21:59,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:21:59,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1277171076, now seen corresponding path program 1 times [2021-01-06 17:21:59,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:21:59,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960297560] [2021-01-06 17:21:59,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:21:59,858 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:21:59,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2112879315] [2021-01-06 17:21:59,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-06 17:21:59,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:21:59,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 25 conjunts are in the unsatisfiable core [2021-01-06 17:21:59,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:22:00,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:22:00,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960297560] [2021-01-06 17:22:00,103 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:22:00,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112879315] [2021-01-06 17:22:00,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:22:00,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-01-06 17:22:00,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705442690] [2021-01-06 17:22:00,104 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-06 17:22:00,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:22:00,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-06 17:22:00,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:22:00,106 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand 10 states. [2021-01-06 17:22:00,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:22:00,469 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2021-01-06 17:22:00,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 17:22:00,470 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2021-01-06 17:22:00,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:22:00,471 INFO L225 Difference]: With dead ends: 70 [2021-01-06 17:22:00,471 INFO L226 Difference]: Without dead ends: 60 [2021-01-06 17:22:00,472 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2021-01-06 17:22:00,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-01-06 17:22:00,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 53. [2021-01-06 17:22:00,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2021-01-06 17:22:00,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2021-01-06 17:22:00,483 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 13 [2021-01-06 17:22:00,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:22:00,483 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2021-01-06 17:22:00,483 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-06 17:22:00,483 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2021-01-06 17:22:00,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-01-06 17:22:00,484 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:22:00,484 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:22:00,699 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:22:00,700 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:22:00,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:22:00,702 INFO L82 PathProgramCache]: Analyzing trace with hash 916732292, now seen corresponding path program 1 times [2021-01-06 17:22:00,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:22:00,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68024886] [2021-01-06 17:22:00,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:22:00,720 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:22:00,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [78853976] [2021-01-06 17:22:00,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-06 17:22:00,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:22:00,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 15 conjunts are in the unsatisfiable core [2021-01-06 17:22:00,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:22:00,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:22:00,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68024886] [2021-01-06 17:22:00,830 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:22:00,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78853976] [2021-01-06 17:22:00,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:22:00,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 17:22:00,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967512831] [2021-01-06 17:22:00,831 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:22:00,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:22:00,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:22:00,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:22:00,833 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 5 states. [2021-01-06 17:22:00,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:22:00,968 INFO L93 Difference]: Finished difference Result 95 states and 103 transitions. [2021-01-06 17:22:00,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:22:00,969 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2021-01-06 17:22:00,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:22:00,970 INFO L225 Difference]: With dead ends: 95 [2021-01-06 17:22:00,970 INFO L226 Difference]: Without dead ends: 89 [2021-01-06 17:22:00,971 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:22:00,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-01-06 17:22:00,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 72. [2021-01-06 17:22:00,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2021-01-06 17:22:00,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 80 transitions. [2021-01-06 17:22:00,984 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 80 transitions. Word has length 16 [2021-01-06 17:22:00,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:22:00,984 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 80 transitions. [2021-01-06 17:22:00,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:22:00,984 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 80 transitions. [2021-01-06 17:22:00,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-01-06 17:22:00,985 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:22:00,985 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:22:01,198 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:22:01,199 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:22:01,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:22:01,201 INFO L82 PathProgramCache]: Analyzing trace with hash -1552659725, now seen corresponding path program 1 times [2021-01-06 17:22:01,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:22:01,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862390004] [2021-01-06 17:22:01,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:22:01,218 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:22:01,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [799753459] [2021-01-06 17:22:01,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-06 17:22:01,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:22:01,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 26 conjunts are in the unsatisfiable core [2021-01-06 17:22:01,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:22:01,369 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:22:01,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862390004] [2021-01-06 17:22:01,369 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:22:01,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799753459] [2021-01-06 17:22:01,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:22:01,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-06 17:22:01,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618774245] [2021-01-06 17:22:01,371 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:22:01,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:22:01,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:22:01,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:22:01,372 INFO L87 Difference]: Start difference. First operand 72 states and 80 transitions. Second operand 8 states. [2021-01-06 17:22:01,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:22:01,644 INFO L93 Difference]: Finished difference Result 129 states and 139 transitions. [2021-01-06 17:22:01,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-06 17:22:01,644 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2021-01-06 17:22:01,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:22:01,646 INFO L225 Difference]: With dead ends: 129 [2021-01-06 17:22:01,646 INFO L226 Difference]: Without dead ends: 123 [2021-01-06 17:22:01,647 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2021-01-06 17:22:01,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-01-06 17:22:01,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 90. [2021-01-06 17:22:01,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2021-01-06 17:22:01,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 102 transitions. [2021-01-06 17:22:01,662 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 102 transitions. Word has length 25 [2021-01-06 17:22:01,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:22:01,663 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 102 transitions. [2021-01-06 17:22:01,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:22:01,663 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 102 transitions. [2021-01-06 17:22:01,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-01-06 17:22:01,664 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:22:01,664 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:22:01,878 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:22:01,879 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:22:01,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:22:01,883 INFO L82 PathProgramCache]: Analyzing trace with hash 1755069467, now seen corresponding path program 1 times [2021-01-06 17:22:01,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:22:01,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95392484] [2021-01-06 17:22:01,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:22:01,902 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:22:01,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [413816363] [2021-01-06 17:22:01,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-06 17:22:01,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:22:01,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 25 conjunts are in the unsatisfiable core [2021-01-06 17:22:01,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:22:02,100 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:22:02,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95392484] [2021-01-06 17:22:02,101 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:22:02,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413816363] [2021-01-06 17:22:02,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:22:02,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-01-06 17:22:02,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116773465] [2021-01-06 17:22:02,102 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 17:22:02,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:22:02,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 17:22:02,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:22:02,104 INFO L87 Difference]: Start difference. First operand 90 states and 102 transitions. Second operand 9 states. [2021-01-06 17:22:02,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:22:02,428 INFO L93 Difference]: Finished difference Result 155 states and 174 transitions. [2021-01-06 17:22:02,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-06 17:22:02,429 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2021-01-06 17:22:02,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:22:02,430 INFO L225 Difference]: With dead ends: 155 [2021-01-06 17:22:02,430 INFO L226 Difference]: Without dead ends: 96 [2021-01-06 17:22:02,431 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2021-01-06 17:22:02,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-01-06 17:22:02,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 90. [2021-01-06 17:22:02,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2021-01-06 17:22:02,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 101 transitions. [2021-01-06 17:22:02,444 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 101 transitions. Word has length 26 [2021-01-06 17:22:02,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:22:02,444 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 101 transitions. [2021-01-06 17:22:02,445 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 17:22:02,445 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 101 transitions. [2021-01-06 17:22:02,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-01-06 17:22:02,446 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:22:02,446 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:22:02,659 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-01-06 17:22:02,660 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:22:02,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:22:02,661 INFO L82 PathProgramCache]: Analyzing trace with hash 1828677220, now seen corresponding path program 2 times [2021-01-06 17:22:02,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:22:02,662 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209597689] [2021-01-06 17:22:02,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:22:02,681 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:22:02,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1597539601] [2021-01-06 17:22:02,682 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-06 17:22:02,741 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:22:02,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:22:02,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 30 conjunts are in the unsatisfiable core [2021-01-06 17:22:02,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:22:02,910 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:22:02,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209597689] [2021-01-06 17:22:02,910 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:22:02,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597539601] [2021-01-06 17:22:02,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:22:02,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-01-06 17:22:02,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717973010] [2021-01-06 17:22:02,911 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 17:22:02,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:22:02,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 17:22:02,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:22:02,913 INFO L87 Difference]: Start difference. First operand 90 states and 101 transitions. Second operand 9 states. [2021-01-06 17:22:03,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:22:03,289 INFO L93 Difference]: Finished difference Result 163 states and 174 transitions. [2021-01-06 17:22:03,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 17:22:03,290 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2021-01-06 17:22:03,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:22:03,293 INFO L225 Difference]: With dead ends: 163 [2021-01-06 17:22:03,293 INFO L226 Difference]: Without dead ends: 157 [2021-01-06 17:22:03,295 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2021-01-06 17:22:03,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-01-06 17:22:03,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 108. [2021-01-06 17:22:03,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2021-01-06 17:22:03,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 123 transitions. [2021-01-06 17:22:03,320 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 123 transitions. Word has length 34 [2021-01-06 17:22:03,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:22:03,321 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 123 transitions. [2021-01-06 17:22:03,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 17:22:03,321 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 123 transitions. [2021-01-06 17:22:03,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-01-06 17:22:03,322 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:22:03,322 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:22:03,536 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:22:03,537 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:22:03,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:22:03,538 INFO L82 PathProgramCache]: Analyzing trace with hash -797667638, now seen corresponding path program 1 times [2021-01-06 17:22:03,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:22:03,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581069795] [2021-01-06 17:22:03,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:22:03,552 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:22:03,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1007124821] [2021-01-06 17:22:03,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-06 17:22:03,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:22:03,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 36 conjunts are in the unsatisfiable core [2021-01-06 17:22:03,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:22:03,903 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:22:03,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581069795] [2021-01-06 17:22:03,904 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:22:03,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007124821] [2021-01-06 17:22:03,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:22:03,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-01-06 17:22:03,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791527924] [2021-01-06 17:22:03,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-06 17:22:03,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:22:03,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-06 17:22:03,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-01-06 17:22:03,906 INFO L87 Difference]: Start difference. First operand 108 states and 123 transitions. Second operand 12 states. [2021-01-06 17:22:04,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:22:04,487 INFO L93 Difference]: Finished difference Result 173 states and 196 transitions. [2021-01-06 17:22:04,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-01-06 17:22:04,487 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 35 [2021-01-06 17:22:04,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:22:04,489 INFO L225 Difference]: With dead ends: 173 [2021-01-06 17:22:04,489 INFO L226 Difference]: Without dead ends: 163 [2021-01-06 17:22:04,490 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2021-01-06 17:22:04,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-01-06 17:22:04,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 130. [2021-01-06 17:22:04,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2021-01-06 17:22:04,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 147 transitions. [2021-01-06 17:22:04,521 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 147 transitions. Word has length 35 [2021-01-06 17:22:04,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:22:04,521 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 147 transitions. [2021-01-06 17:22:04,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-01-06 17:22:04,521 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 147 transitions. [2021-01-06 17:22:04,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-01-06 17:22:04,523 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:22:04,523 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:22:04,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:22:04,738 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:22:04,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:22:04,739 INFO L82 PathProgramCache]: Analyzing trace with hash -1020421613, now seen corresponding path program 3 times [2021-01-06 17:22:04,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:22:04,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518018964] [2021-01-06 17:22:04,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:22:04,753 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:22:04,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [161135428] [2021-01-06 17:22:04,755 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-06 17:22:04,803 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-01-06 17:22:04,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:22:04,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-06 17:22:04,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:22:07,011 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-01-06 17:22:07,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518018964] [2021-01-06 17:22:07,012 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:22:07,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161135428] [2021-01-06 17:22:07,013 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:22:07,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-06 17:22:07,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980548512] [2021-01-06 17:22:07,013 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:22:07,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:22:07,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:22:07,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=28, Unknown=1, NotChecked=0, Total=42 [2021-01-06 17:22:07,014 INFO L87 Difference]: Start difference. First operand 130 states and 147 transitions. Second operand 7 states. [2021-01-06 17:22:13,412 WARN L197 SmtUtils]: Spent 4.01 s on a formula simplification that was a NOOP. DAG size: 17 [2021-01-06 17:22:23,479 WARN L197 SmtUtils]: Spent 10.06 s on a formula simplification. DAG size of input: 25 DAG size of output: 20 [2021-01-06 17:22:27,519 WARN L197 SmtUtils]: Spent 4.02 s on a formula simplification that was a NOOP. DAG size: 22 [2021-01-06 17:22:50,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:22:50,047 INFO L93 Difference]: Finished difference Result 130 states and 147 transitions. [2021-01-06 17:22:50,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:22:50,047 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 43 [2021-01-06 17:22:50,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:22:50,048 INFO L225 Difference]: With dead ends: 130 [2021-01-06 17:22:50,049 INFO L226 Difference]: Without dead ends: 124 [2021-01-06 17:22:50,049 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 36.7s TimeCoverageRelationStatistics Valid=52, Invalid=95, Unknown=9, NotChecked=0, Total=156 [2021-01-06 17:22:50,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-01-06 17:22:50,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 69. [2021-01-06 17:22:50,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2021-01-06 17:22:50,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 72 transitions. [2021-01-06 17:22:50,064 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 72 transitions. Word has length 43 [2021-01-06 17:22:50,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:22:50,064 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 72 transitions. [2021-01-06 17:22:50,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:22:50,064 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 72 transitions. [2021-01-06 17:22:50,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-01-06 17:22:50,065 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:22:50,065 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:22:50,278 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-01-06 17:22:50,279 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:22:50,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:22:50,280 INFO L82 PathProgramCache]: Analyzing trace with hash 1074581755, now seen corresponding path program 2 times [2021-01-06 17:22:50,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:22:50,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658515912] [2021-01-06 17:22:50,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:22:50,293 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:22:50,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2097306717] [2021-01-06 17:22:50,293 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-06 17:22:50,362 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:22:50,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:22:50,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 46 conjunts are in the unsatisfiable core [2021-01-06 17:22:50,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:22:50,958 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 17:22:50,963 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 17:22:51,006 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:22:51,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658515912] [2021-01-06 17:22:51,007 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:22:51,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097306717] [2021-01-06 17:22:51,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:22:51,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2021-01-06 17:22:51,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802373721] [2021-01-06 17:22:51,008 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-01-06 17:22:51,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:22:51,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-01-06 17:22:51,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2021-01-06 17:22:51,010 INFO L87 Difference]: Start difference. First operand 69 states and 72 transitions. Second operand 16 states. [2021-01-06 17:22:52,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:22:52,396 INFO L93 Difference]: Finished difference Result 119 states and 125 transitions. [2021-01-06 17:22:52,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-01-06 17:22:52,397 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 44 [2021-01-06 17:22:52,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:22:52,398 INFO L225 Difference]: With dead ends: 119 [2021-01-06 17:22:52,398 INFO L226 Difference]: Without dead ends: 109 [2021-01-06 17:22:52,399 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=228, Invalid=764, Unknown=0, NotChecked=0, Total=992 [2021-01-06 17:22:52,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-01-06 17:22:52,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 78. [2021-01-06 17:22:52,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2021-01-06 17:22:52,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 82 transitions. [2021-01-06 17:22:52,415 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 82 transitions. Word has length 44 [2021-01-06 17:22:52,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:22:52,416 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 82 transitions. [2021-01-06 17:22:52,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-01-06 17:22:52,416 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 82 transitions. [2021-01-06 17:22:52,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-01-06 17:22:52,417 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:22:52,417 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:22:52,631 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:22:52,632 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:22:52,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:22:52,633 INFO L82 PathProgramCache]: Analyzing trace with hash 1128629901, now seen corresponding path program 3 times [2021-01-06 17:22:52,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:22:52,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056549686] [2021-01-06 17:22:52,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:22:52,649 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:22:52,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1222549361] [2021-01-06 17:22:52,650 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-06 17:22:52,696 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-01-06 17:22:52,696 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:22:52,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 30 conjunts are in the unsatisfiable core [2021-01-06 17:22:52,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:22:52,900 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-01-06 17:22:52,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056549686] [2021-01-06 17:22:52,900 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:22:52,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222549361] [2021-01-06 17:22:52,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:22:52,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-01-06 17:22:52,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557088593] [2021-01-06 17:22:52,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-06 17:22:52,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:22:52,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-06 17:22:52,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:22:52,902 INFO L87 Difference]: Start difference. First operand 78 states and 82 transitions. Second operand 10 states. [2021-01-06 17:22:57,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:22:57,378 INFO L93 Difference]: Finished difference Result 129 states and 141 transitions. [2021-01-06 17:22:57,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 17:22:57,378 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 48 [2021-01-06 17:22:57,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:22:57,379 INFO L225 Difference]: With dead ends: 129 [2021-01-06 17:22:57,379 INFO L226 Difference]: Without dead ends: 94 [2021-01-06 17:22:57,380 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2021-01-06 17:22:57,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-01-06 17:22:57,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 86. [2021-01-06 17:22:57,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2021-01-06 17:22:57,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 91 transitions. [2021-01-06 17:22:57,401 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 91 transitions. Word has length 48 [2021-01-06 17:22:57,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:22:57,401 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 91 transitions. [2021-01-06 17:22:57,401 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-06 17:22:57,402 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 91 transitions. [2021-01-06 17:22:57,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-01-06 17:22:57,403 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:22:57,403 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:22:57,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:22:57,618 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:22:57,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:22:57,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1934789142, now seen corresponding path program 4 times [2021-01-06 17:22:57,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:22:57,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764339089] [2021-01-06 17:22:57,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:22:57,638 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:22:57,639 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1604638459] [2021-01-06 17:22:57,639 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-06 17:22:57,687 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-06 17:22:57,687 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:22:57,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 44 conjunts are in the unsatisfiable core [2021-01-06 17:22:57,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:22:58,072 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:22:58,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764339089] [2021-01-06 17:22:58,074 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:22:58,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604638459] [2021-01-06 17:22:58,074 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:22:58,074 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-01-06 17:22:58,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564066069] [2021-01-06 17:22:58,075 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-01-06 17:22:58,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:22:58,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-01-06 17:22:58,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-01-06 17:22:58,076 INFO L87 Difference]: Start difference. First operand 86 states and 91 transitions. Second operand 15 states. [2021-01-06 17:22:59,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:22:59,304 INFO L93 Difference]: Finished difference Result 137 states and 146 transitions. [2021-01-06 17:22:59,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-01-06 17:22:59,305 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 53 [2021-01-06 17:22:59,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:22:59,306 INFO L225 Difference]: With dead ends: 137 [2021-01-06 17:22:59,306 INFO L226 Difference]: Without dead ends: 133 [2021-01-06 17:22:59,307 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=192, Invalid=678, Unknown=0, NotChecked=0, Total=870 [2021-01-06 17:22:59,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-01-06 17:22:59,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 95. [2021-01-06 17:22:59,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2021-01-06 17:22:59,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 101 transitions. [2021-01-06 17:22:59,334 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 101 transitions. Word has length 53 [2021-01-06 17:22:59,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:22:59,335 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 101 transitions. [2021-01-06 17:22:59,335 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-01-06 17:22:59,335 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 101 transitions. [2021-01-06 17:22:59,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-01-06 17:22:59,343 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:22:59,343 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:22:59,557 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-01-06 17:22:59,558 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:22:59,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:22:59,559 INFO L82 PathProgramCache]: Analyzing trace with hash -413997928, now seen corresponding path program 5 times [2021-01-06 17:22:59,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:22:59,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548039793] [2021-01-06 17:22:59,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:22:59,577 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:22:59,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1305824818] [2021-01-06 17:22:59,578 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-06 17:22:59,629 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-01-06 17:22:59,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:22:59,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 6 conjunts are in the unsatisfiable core [2021-01-06 17:22:59,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:22:59,754 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 37 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:22:59,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548039793] [2021-01-06 17:22:59,755 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:22:59,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305824818] [2021-01-06 17:22:59,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:22:59,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-06 17:22:59,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545875015] [2021-01-06 17:22:59,758 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:22:59,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:22:59,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:22:59,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:22:59,760 INFO L87 Difference]: Start difference. First operand 95 states and 101 transitions. Second operand 7 states. [2021-01-06 17:22:59,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:22:59,954 INFO L93 Difference]: Finished difference Result 186 states and 196 transitions. [2021-01-06 17:22:59,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:22:59,955 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 57 [2021-01-06 17:22:59,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:22:59,956 INFO L225 Difference]: With dead ends: 186 [2021-01-06 17:22:59,956 INFO L226 Difference]: Without dead ends: 137 [2021-01-06 17:22:59,958 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:22:59,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-01-06 17:22:59,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 125. [2021-01-06 17:22:59,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2021-01-06 17:22:59,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 134 transitions. [2021-01-06 17:22:59,986 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 134 transitions. Word has length 57 [2021-01-06 17:22:59,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:22:59,986 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 134 transitions. [2021-01-06 17:22:59,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:22:59,987 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 134 transitions. [2021-01-06 17:22:59,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-01-06 17:22:59,988 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:22:59,988 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:23:00,202 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-01-06 17:23:00,202 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:23:00,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:23:00,203 INFO L82 PathProgramCache]: Analyzing trace with hash -1860833829, now seen corresponding path program 6 times [2021-01-06 17:23:00,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:23:00,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203534103] [2021-01-06 17:23:00,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:23:00,226 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:23:00,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1585200063] [2021-01-06 17:23:00,226 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-06 17:23:00,287 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-01-06 17:23:00,288 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:23:00,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 30 conjunts are in the unsatisfiable core [2021-01-06 17:23:00,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:23:00,455 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 24 proven. 4 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2021-01-06 17:23:00,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203534103] [2021-01-06 17:23:00,456 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:23:00,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585200063] [2021-01-06 17:23:00,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:23:00,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-06 17:23:00,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508873352] [2021-01-06 17:23:00,457 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:23:00,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:23:00,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:23:00,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:23:00,459 INFO L87 Difference]: Start difference. First operand 125 states and 134 transitions. Second operand 8 states. [2021-01-06 17:23:04,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:23:04,697 INFO L93 Difference]: Finished difference Result 171 states and 185 transitions. [2021-01-06 17:23:04,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 17:23:04,698 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 62 [2021-01-06 17:23:04,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:23:04,699 INFO L225 Difference]: With dead ends: 171 [2021-01-06 17:23:04,699 INFO L226 Difference]: Without dead ends: 169 [2021-01-06 17:23:04,700 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2021-01-06 17:23:04,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-01-06 17:23:04,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 139. [2021-01-06 17:23:04,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2021-01-06 17:23:04,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 149 transitions. [2021-01-06 17:23:04,732 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 149 transitions. Word has length 62 [2021-01-06 17:23:04,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:23:04,733 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 149 transitions. [2021-01-06 17:23:04,733 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:23:04,733 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 149 transitions. [2021-01-06 17:23:04,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-01-06 17:23:04,734 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:23:04,734 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:23:04,947 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-01-06 17:23:04,948 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:23:04,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:23:04,949 INFO L82 PathProgramCache]: Analyzing trace with hash 300678153, now seen corresponding path program 7 times [2021-01-06 17:23:04,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:23:04,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056173340] [2021-01-06 17:23:04,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:23:04,959 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:23:04,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [588947183] [2021-01-06 17:23:04,959 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:23:05,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:23:05,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 64 conjunts are in the unsatisfiable core [2021-01-06 17:23:05,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:23:05,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056173340] [2021-01-06 17:23:05,878 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:23:05,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588947183] [2021-01-06 17:23:05,878 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: null [2021-01-06 17:23:05,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:23:05,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-01-06 17:23:05,878 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2021-01-06 17:23:05,878 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-01-06 17:23:06,083 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:23:06,104 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-01-06 17:23:06,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 05:23:06 BoogieIcfgContainer [2021-01-06 17:23:06,105 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 17:23:06,105 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 17:23:06,105 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 17:23:06,105 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 17:23:06,106 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:21:58" (3/4) ... [2021-01-06 17:23:06,110 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-01-06 17:23:06,110 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 17:23:06,111 INFO L168 Benchmark]: Toolchain (without parser) took 68487.27 ms. Allocated memory was 151.0 MB in the beginning and 228.6 MB in the end (delta: 77.6 MB). Free memory was 126.7 MB in the beginning and 161.3 MB in the end (delta: -34.6 MB). Peak memory consumption was 43.2 MB. Max. memory is 8.0 GB. [2021-01-06 17:23:06,112 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 123.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 17:23:06,112 INFO L168 Benchmark]: CACSL2BoogieTranslator took 260.74 ms. Allocated memory is still 151.0 MB. Free memory was 126.5 MB in the beginning and 116.4 MB in the end (delta: 10.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-01-06 17:23:06,113 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.38 ms. Allocated memory is still 151.0 MB. Free memory was 116.4 MB in the beginning and 114.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 17:23:06,113 INFO L168 Benchmark]: Boogie Preprocessor took 47.61 ms. Allocated memory is still 151.0 MB. Free memory was 114.8 MB in the beginning and 113.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:23:06,114 INFO L168 Benchmark]: RCFGBuilder took 442.56 ms. Allocated memory is still 151.0 MB. Free memory was 113.6 MB in the beginning and 133.1 MB in the end (delta: -19.5 MB). Peak memory consumption was 20.4 MB. Max. memory is 8.0 GB. [2021-01-06 17:23:06,114 INFO L168 Benchmark]: TraceAbstraction took 67679.07 ms. Allocated memory was 151.0 MB in the beginning and 228.6 MB in the end (delta: 77.6 MB). Free memory was 132.7 MB in the beginning and 161.8 MB in the end (delta: -29.1 MB). Peak memory consumption was 49.1 MB. Max. memory is 8.0 GB. [2021-01-06 17:23:06,115 INFO L168 Benchmark]: Witness Printer took 4.81 ms. Allocated memory is still 228.6 MB. Free memory is still 161.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 17:23:06,118 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 123.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 260.74 ms. Allocated memory is still 151.0 MB. Free memory was 126.5 MB in the beginning and 116.4 MB in the end (delta: 10.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 40.38 ms. Allocated memory is still 151.0 MB. Free memory was 116.4 MB in the beginning and 114.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 47.61 ms. Allocated memory is still 151.0 MB. Free memory was 114.8 MB in the beginning and 113.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 442.56 ms. Allocated memory is still 151.0 MB. Free memory was 113.6 MB in the beginning and 133.1 MB in the end (delta: -19.5 MB). Peak memory consumption was 20.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 67679.07 ms. Allocated memory was 151.0 MB in the beginning and 228.6 MB in the end (delta: 77.6 MB). Free memory was 132.7 MB in the beginning and 161.8 MB in the end (delta: -29.1 MB). Peak memory consumption was 49.1 MB. Max. memory is 8.0 GB. * Witness Printer took 4.81 ms. Allocated memory is still 228.6 MB. Free memory is still 161.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L23] int x, y; [L24] long long q, r, a, b; [L26] x = __VERIFIER_nondet_int() [L12] COND FALSE !(!cond) [L28] y = __VERIFIER_nondet_int() [L12] COND FALSE !(!cond) [L12] COND FALSE !(!cond) [L33] q = 0 [L34] r = x [L35] a = 0 [L36] b = 0 [L38] COND TRUE 1 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L42] COND FALSE !(!(r >= y)) [L44] a = 1 [L45] b = y [L47] COND TRUE 1 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L52] COND FALSE !(!(r >= 2 * b)) [L15] COND FALSE !(!(cond)) [L57] a = 2 * a [L58] b = 2 * b [L47] COND TRUE 1 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L52] COND FALSE !(!(r >= 2 * b)) [L15] COND FALSE !(!(cond)) [L57] a = 2 * a [L58] b = 2 * b [L47] COND TRUE 1 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L52] COND TRUE !(r >= 2 * b) [L60] r = r - b [L61] q = q + a [L38] COND TRUE 1 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L42] COND FALSE !(!(r >= y)) [L44] a = 1 [L45] b = y [L47] COND TRUE 1 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L52] COND FALSE !(!(r >= 2 * b)) [L15] COND FALSE !(!(cond)) [L57] a = 2 * a [L58] b = 2 * b [L47] COND TRUE 1 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L52] COND TRUE !(r >= 2 * b) [L60] r = r - b [L61] q = q + a [L38] COND TRUE 1 [L15] COND FALSE !(!(cond)) [L15] COND TRUE !(cond) [L17] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 43 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 67.5s, OverallIterations: 15, TraceHistogramMax: 5, AutomataDifference: 57.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 375 SDtfs, 1709 SDslu, 824 SDs, 0 SdLazy, 2043 SolverSat, 513 SolverUnsat, 8 SolverUnknown, 0 SolverNotchecked, 18.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 558 GetRequests, 363 SyntacticMatches, 3 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 607 ImplicationChecksByTransitivity, 41.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=139occurred in iteration=14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 14 MinimizatonAttempts, 328 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.9s InterpolantComputationTime, 478 NumberOfCodeBlocks, 404 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 464 ConstructedInterpolants, 0 QuantifiedInterpolants, 178597 SizeOfPredicates, 136 NumberOfNonLiveVariables, 1510 ConjunctsInSsa, 360 ConjunctsInUnsatCore, 14 InterpolantComputations, 4 PerfectInterpolantSequences, 184/321 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...