/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_unwindbound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 17:21:35,763 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 17:21:35,766 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 17:21:35,807 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 17:21:35,808 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 17:21:35,812 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 17:21:35,816 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 17:21:35,821 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 17:21:35,825 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 17:21:35,831 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 17:21:35,835 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 17:21:35,837 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 17:21:35,837 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 17:21:35,840 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 17:21:35,842 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 17:21:35,844 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 17:21:35,846 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 17:21:35,849 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 17:21:35,871 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 17:21:35,877 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 17:21:35,881 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 17:21:35,882 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 17:21:35,884 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 17:21:35,887 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 17:21:35,896 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 17:21:35,914 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 17:21:35,915 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 17:21:35,916 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 17:21:35,921 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 17:21:35,972 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 17:21:35,972 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 17:21:35,977 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 17:21:35,977 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 17:21:35,977 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 17:21:35,978 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 17:21:35,978 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 17:21:35,978 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 17:21:35,978 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 17:21:35,978 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 17:21:35,979 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 17:21:35,980 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 17:21:35,980 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 17:21:35,980 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 17:21:35,981 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 17:21:35,981 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 17:21:35,981 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 17:21:35,981 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:21:35,982 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 17:21:35,982 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 17:21:35,982 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 17:21:35,982 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 17:21:35,982 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 17:21:35,983 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 17:21:35,983 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 17:21:35,983 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 17:21:36,412 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 17:21:36,466 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 17:21:36,470 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 17:21:36,471 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 17:21:36,472 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 17:21:36,473 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound5.c [2021-01-06 17:21:36,560 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/b3ffa107d/53c3098b6b8946559f5db95666a10f35/FLAGc2fd661bd [2021-01-06 17:21:37,203 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 17:21:37,204 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound5.c [2021-01-06 17:21:37,211 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/b3ffa107d/53c3098b6b8946559f5db95666a10f35/FLAGc2fd661bd [2021-01-06 17:21:37,561 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/b3ffa107d/53c3098b6b8946559f5db95666a10f35 [2021-01-06 17:21:37,564 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 17:21:37,566 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 17:21:37,570 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 17:21:37,570 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 17:21:37,574 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 17:21:37,576 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:21:37" (1/1) ... [2021-01-06 17:21:37,578 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74822fdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:21:37, skipping insertion in model container [2021-01-06 17:21:37,578 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:21:37" (1/1) ... [2021-01-06 17:21:37,587 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 17:21:37,607 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 17:21:37,767 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_unwindbound5.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 17:21:37,793 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:21:37,804 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 17:21:37,820 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_unwindbound5.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 17:21:37,829 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:21:37,847 INFO L208 MainTranslator]: Completed translation [2021-01-06 17:21:37,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:21:37 WrapperNode [2021-01-06 17:21:37,848 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 17:21:37,849 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 17:21:37,849 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 17:21:37,850 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 17:21:37,858 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:21:37" (1/1) ... [2021-01-06 17:21:37,867 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:21:37" (1/1) ... [2021-01-06 17:21:37,894 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 17:21:37,895 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 17:21:37,895 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 17:21:37,895 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 17:21:37,905 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:21:37" (1/1) ... [2021-01-06 17:21:37,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:21:37" (1/1) ... [2021-01-06 17:21:37,908 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:21:37" (1/1) ... [2021-01-06 17:21:37,908 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:21:37" (1/1) ... [2021-01-06 17:21:37,913 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:21:37" (1/1) ... [2021-01-06 17:21:37,918 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:21:37" (1/1) ... [2021-01-06 17:21:37,920 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:21:37" (1/1) ... [2021-01-06 17:21:37,923 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 17:21:37,924 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 17:21:37,924 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 17:21:37,925 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 17:21:37,926 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:21:37" (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 17:21:38,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 17:21:38,041 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 17:21:38,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 17:21:38,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 17:21:38,674 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 17:21:38,675 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2021-01-06 17:21:38,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:21:38 BoogieIcfgContainer [2021-01-06 17:21:38,677 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 17:21:38,681 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 17:21:38,682 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 17:21:38,685 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 17:21:38,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 05:21:37" (1/3) ... [2021-01-06 17:21:38,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51288dc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:21:38, skipping insertion in model container [2021-01-06 17:21:38,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:21:37" (2/3) ... [2021-01-06 17:21:38,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51288dc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:21:38, skipping insertion in model container [2021-01-06 17:21:38,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:21:38" (3/3) ... [2021-01-06 17:21:38,692 INFO L111 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_unwindbound5.c [2021-01-06 17:21:38,699 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 17:21:38,705 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2021-01-06 17:21:38,726 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-01-06 17:21:38,771 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 17:21:38,771 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 17:21:38,771 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 17:21:38,772 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 17:21:38,772 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 17:21:38,772 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 17:21:38,772 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 17:21:38,772 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 17:21:38,792 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2021-01-06 17:21:38,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-01-06 17:21:38,798 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:21:38,799 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:21:38,800 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 17:21:38,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:21:38,807 INFO L82 PathProgramCache]: Analyzing trace with hash 122367883, now seen corresponding path program 1 times [2021-01-06 17:21:38,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:21:38,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867694187] [2021-01-06 17:21:38,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:21:38,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:21:39,036 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 17:21:39,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867694187] [2021-01-06 17:21:39,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:21:39,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 17:21:39,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483406950] [2021-01-06 17:21:39,044 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 17:21:39,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:21:39,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 17:21:39,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 17:21:39,065 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2021-01-06 17:21:39,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:21:39,102 INFO L93 Difference]: Finished difference Result 79 states and 104 transitions. [2021-01-06 17:21:39,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 17:21:39,104 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2021-01-06 17:21:39,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:21:39,121 INFO L225 Difference]: With dead ends: 79 [2021-01-06 17:21:39,122 INFO L226 Difference]: Without dead ends: 37 [2021-01-06 17:21:39,126 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 17:21:39,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-01-06 17:21:39,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-01-06 17:21:39,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2021-01-06 17:21:39,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2021-01-06 17:21:39,169 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 8 [2021-01-06 17:21:39,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:21:39,170 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2021-01-06 17:21:39,170 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 17:21:39,170 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2021-01-06 17:21:39,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-01-06 17:21:39,170 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:21:39,171 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:21:39,171 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 17:21:39,171 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 17:21:39,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:21:39,172 INFO L82 PathProgramCache]: Analyzing trace with hash 176704684, now seen corresponding path program 1 times [2021-01-06 17:21:39,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:21:39,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176779423] [2021-01-06 17:21:39,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:21:39,190 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:21:39,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [706773679] [2021-01-06 17:21:39,190 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 17:21:39,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:21:39,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 15 conjunts are in the unsatisfiable core [2021-01-06 17:21:39,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:21:39,406 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 17:21:39,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176779423] [2021-01-06 17:21:39,407 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:21:39,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706773679] [2021-01-06 17:21:39,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:21:39,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 17:21:39,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879408926] [2021-01-06 17:21:39,410 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:21:39,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:21:39,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:21:39,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:21:39,420 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand 6 states. [2021-01-06 17:21:39,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:21:39,682 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2021-01-06 17:21:39,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:21:39,683 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2021-01-06 17:21:39,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:21:39,687 INFO L225 Difference]: With dead ends: 51 [2021-01-06 17:21:39,687 INFO L226 Difference]: Without dead ends: 49 [2021-01-06 17:21:39,690 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:21:39,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-01-06 17:21:39,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 40. [2021-01-06 17:21:39,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2021-01-06 17:21:39,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2021-01-06 17:21:39,714 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 8 [2021-01-06 17:21:39,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:21:39,715 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2021-01-06 17:21:39,716 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:21:39,716 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2021-01-06 17:21:39,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-01-06 17:21:39,716 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:21:39,717 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:21:39,931 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-01-06 17:21:39,932 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 17:21:39,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:21:39,933 INFO L82 PathProgramCache]: Analyzing trace with hash 1182906761, now seen corresponding path program 1 times [2021-01-06 17:21:39,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:21:39,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604945869] [2021-01-06 17:21:39,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:21:39,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:21:40,034 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 17:21:40,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604945869] [2021-01-06 17:21:40,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:21:40,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 17:21:40,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293282490] [2021-01-06 17:21:40,038 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 17:21:40,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:21:40,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 17:21:40,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 17:21:40,042 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 4 states. [2021-01-06 17:21:40,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:21:40,089 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2021-01-06 17:21:40,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 17:21:40,089 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2021-01-06 17:21:40,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:21:40,090 INFO L225 Difference]: With dead ends: 44 [2021-01-06 17:21:40,090 INFO L226 Difference]: Without dead ends: 40 [2021-01-06 17:21:40,091 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 17:21:40,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-01-06 17:21:40,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-01-06 17:21:40,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2021-01-06 17:21:40,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2021-01-06 17:21:40,108 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 9 [2021-01-06 17:21:40,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:21:40,112 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2021-01-06 17:21:40,112 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 17:21:40,113 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2021-01-06 17:21:40,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 17:21:40,113 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:21:40,113 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:21:40,114 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 17:21:40,114 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 17:21:40,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:21:40,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1985334737, now seen corresponding path program 1 times [2021-01-06 17:21:40,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:21:40,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481081699] [2021-01-06 17:21:40,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:21:40,146 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:21:40,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [112742027] [2021-01-06 17:21:40,149 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 17:21:40,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:21:40,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 15 conjunts are in the unsatisfiable core [2021-01-06 17:21:40,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:21:40,280 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 17:21:40,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481081699] [2021-01-06 17:21:40,281 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:21:40,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112742027] [2021-01-06 17:21:40,282 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:21:40,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 17:21:40,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494596046] [2021-01-06 17:21:40,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:21:40,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:21:40,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:21:40,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:21:40,284 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand 6 states. [2021-01-06 17:21:40,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:21:40,464 INFO L93 Difference]: Finished difference Result 74 states and 81 transitions. [2021-01-06 17:21:40,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 17:21:40,465 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2021-01-06 17:21:40,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:21:40,466 INFO L225 Difference]: With dead ends: 74 [2021-01-06 17:21:40,466 INFO L226 Difference]: Without dead ends: 66 [2021-01-06 17:21:40,467 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:21:40,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-01-06 17:21:40,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 53. [2021-01-06 17:21:40,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2021-01-06 17:21:40,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2021-01-06 17:21:40,476 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 10 [2021-01-06 17:21:40,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:21:40,476 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2021-01-06 17:21:40,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:21:40,476 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2021-01-06 17:21:40,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 17:21:40,477 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:21:40,477 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:21:40,692 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:21:40,693 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 17:21:40,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:21:40,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1896102171, now seen corresponding path program 1 times [2021-01-06 17:21:40,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:21:40,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122698402] [2021-01-06 17:21:40,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:21:40,709 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:21:40,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1837241141] [2021-01-06 17:21:40,711 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 17:21:40,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:21:40,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 15 conjunts are in the unsatisfiable core [2021-01-06 17:21:40,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:21:40,805 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 17:21:40,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122698402] [2021-01-06 17:21:40,806 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:21:40,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1837241141] [2021-01-06 17:21:40,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:21:40,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 17:21:40,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327650673] [2021-01-06 17:21:40,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:21:40,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:21:40,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:21:40,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:21:40,808 INFO L87 Difference]: Start difference. First operand 53 states and 61 transitions. Second operand 6 states. [2021-01-06 17:21:40,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:21:40,964 INFO L93 Difference]: Finished difference Result 104 states and 123 transitions. [2021-01-06 17:21:40,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 17:21:40,965 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2021-01-06 17:21:40,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:21:40,968 INFO L225 Difference]: With dead ends: 104 [2021-01-06 17:21:40,968 INFO L226 Difference]: Without dead ends: 98 [2021-01-06 17:21:40,969 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:21:40,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-01-06 17:21:40,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 75. [2021-01-06 17:21:40,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2021-01-06 17:21:40,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 91 transitions. [2021-01-06 17:21:40,980 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 91 transitions. Word has length 14 [2021-01-06 17:21:40,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:21:40,981 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 91 transitions. [2021-01-06 17:21:40,981 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:21:40,981 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 91 transitions. [2021-01-06 17:21:40,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-01-06 17:21:40,982 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:21:40,982 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:21:41,195 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:21:41,196 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 17:21:41,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:21:41,197 INFO L82 PathProgramCache]: Analyzing trace with hash 1527669658, now seen corresponding path program 1 times [2021-01-06 17:21:41,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:21:41,198 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615268811] [2021-01-06 17:21:41,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:21:41,211 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:21:41,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1005915817] [2021-01-06 17:21:41,211 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 17:21:41,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:21:41,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjunts are in the unsatisfiable core [2021-01-06 17:21:41,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:21:41,309 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:21:41,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615268811] [2021-01-06 17:21:41,310 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:21:41,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005915817] [2021-01-06 17:21:41,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:21:41,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 17:21:41,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459120874] [2021-01-06 17:21:41,312 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:21:41,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:21:41,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:21:41,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:21:41,315 INFO L87 Difference]: Start difference. First operand 75 states and 91 transitions. Second operand 5 states. [2021-01-06 17:21:41,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:21:41,363 INFO L93 Difference]: Finished difference Result 121 states and 145 transitions. [2021-01-06 17:21:41,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 17:21:41,363 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2021-01-06 17:21:41,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:21:41,364 INFO L225 Difference]: With dead ends: 121 [2021-01-06 17:21:41,364 INFO L226 Difference]: Without dead ends: 75 [2021-01-06 17:21:41,365 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:21:41,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-01-06 17:21:41,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2021-01-06 17:21:41,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2021-01-06 17:21:41,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 90 transitions. [2021-01-06 17:21:41,375 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 90 transitions. Word has length 18 [2021-01-06 17:21:41,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:21:41,376 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 90 transitions. [2021-01-06 17:21:41,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:21:41,376 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 90 transitions. [2021-01-06 17:21:41,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-01-06 17:21:41,377 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:21:41,377 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:21:41,591 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:21:41,592 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 17:21:41,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:21:41,593 INFO L82 PathProgramCache]: Analyzing trace with hash 2092681793, now seen corresponding path program 1 times [2021-01-06 17:21:41,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:21:41,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057520427] [2021-01-06 17:21:41,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:21:41,606 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:21:41,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [342224207] [2021-01-06 17:21:41,607 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 17:21:41,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:21:41,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 9 conjunts are in the unsatisfiable core [2021-01-06 17:21:41,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:21:41,737 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 17:21:41,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057520427] [2021-01-06 17:21:41,738 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:21:41,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342224207] [2021-01-06 17:21:41,739 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:21:41,739 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 17:21:41,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542439663] [2021-01-06 17:21:41,740 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:21:41,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:21:41,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:21:41,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:21:41,741 INFO L87 Difference]: Start difference. First operand 75 states and 90 transitions. Second operand 6 states. [2021-01-06 17:21:41,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:21:41,911 INFO L93 Difference]: Finished difference Result 82 states and 99 transitions. [2021-01-06 17:21:41,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 17:21:41,912 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2021-01-06 17:21:41,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:21:41,913 INFO L225 Difference]: With dead ends: 82 [2021-01-06 17:21:41,914 INFO L226 Difference]: Without dead ends: 80 [2021-01-06 17:21:41,914 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:21:41,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-01-06 17:21:41,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 73. [2021-01-06 17:21:41,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2021-01-06 17:21:41,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 85 transitions. [2021-01-06 17:21:41,940 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 85 transitions. Word has length 18 [2021-01-06 17:21:41,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:21:41,941 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 85 transitions. [2021-01-06 17:21:41,941 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:21:41,941 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 85 transitions. [2021-01-06 17:21:41,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-01-06 17:21:41,943 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:21:41,943 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] [2021-01-06 17:21:42,146 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-01-06 17:21:42,147 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 17:21:42,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:21:42,148 INFO L82 PathProgramCache]: Analyzing trace with hash 1135496359, now seen corresponding path program 1 times [2021-01-06 17:21:42,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:21:42,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380239282] [2021-01-06 17:21:42,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:21:42,161 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:21:42,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1720637103] [2021-01-06 17:21:42,161 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 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 17:21:42,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:21:42,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 7 conjunts are in the unsatisfiable core [2021-01-06 17:21:42,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:21:42,275 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 17:21:42,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380239282] [2021-01-06 17:21:42,276 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:21:42,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1720637103] [2021-01-06 17:21:42,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:21:42,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-01-06 17:21:42,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514969311] [2021-01-06 17:21:42,277 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:21:42,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:21:42,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:21:42,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:21:42,278 INFO L87 Difference]: Start difference. First operand 73 states and 85 transitions. Second operand 6 states. [2021-01-06 17:21:42,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:21:42,309 INFO L93 Difference]: Finished difference Result 82 states and 94 transitions. [2021-01-06 17:21:42,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 17:21:42,309 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2021-01-06 17:21:42,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:21:42,310 INFO L225 Difference]: With dead ends: 82 [2021-01-06 17:21:42,310 INFO L226 Difference]: Without dead ends: 78 [2021-01-06 17:21:42,311 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:21:42,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-01-06 17:21:42,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2021-01-06 17:21:42,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2021-01-06 17:21:42,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 88 transitions. [2021-01-06 17:21:42,318 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 88 transitions. Word has length 24 [2021-01-06 17:21:42,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:21:42,318 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 88 transitions. [2021-01-06 17:21:42,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:21:42,318 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 88 transitions. [2021-01-06 17:21:42,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-01-06 17:21:42,319 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:21:42,319 INFO L422 BasicCegarLoop]: trace histogram [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 17:21:42,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:21:42,534 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 17:21:42,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:21:42,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1501746768, now seen corresponding path program 1 times [2021-01-06 17:21:42,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:21:42,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493671524] [2021-01-06 17:21:42,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:21:42,550 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:21:42,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [636375514] [2021-01-06 17:21:42,551 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 17:21:42,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:21:42,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 19 conjunts are in the unsatisfiable core [2021-01-06 17:21:42,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:21:42,699 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:21:42,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493671524] [2021-01-06 17:21:42,700 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:21:42,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636375514] [2021-01-06 17:21:42,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:21:42,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-06 17:21:42,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581313717] [2021-01-06 17:21:42,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:21:42,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:21:42,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:21:42,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:21:42,702 INFO L87 Difference]: Start difference. First operand 76 states and 88 transitions. Second operand 7 states. [2021-01-06 17:21:43,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:21:43,010 INFO L93 Difference]: Finished difference Result 142 states and 164 transitions. [2021-01-06 17:21:43,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 17:21:43,011 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2021-01-06 17:21:43,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:21:43,012 INFO L225 Difference]: With dead ends: 142 [2021-01-06 17:21:43,012 INFO L226 Difference]: Without dead ends: 136 [2021-01-06 17:21:43,013 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-01-06 17:21:43,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-01-06 17:21:43,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 96. [2021-01-06 17:21:43,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2021-01-06 17:21:43,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 113 transitions. [2021-01-06 17:21:43,022 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 113 transitions. Word has length 24 [2021-01-06 17:21:43,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:21:43,022 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 113 transitions. [2021-01-06 17:21:43,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:21:43,022 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 113 transitions. [2021-01-06 17:21:43,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-01-06 17:21:43,023 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:21:43,023 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:21:43,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:21:43,237 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 17:21:43,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:21:43,238 INFO L82 PathProgramCache]: Analyzing trace with hash 839910097, now seen corresponding path program 1 times [2021-01-06 17:21:43,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:21:43,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378188123] [2021-01-06 17:21:43,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:21:43,250 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:21:43,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1389951644] [2021-01-06 17:21:43,250 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 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 17:21:43,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:21:43,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 25 conjunts are in the unsatisfiable core [2021-01-06 17:21:43,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:21:43,507 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:21:43,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378188123] [2021-01-06 17:21:43,507 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:21:43,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389951644] [2021-01-06 17:21:43,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:21:43,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-01-06 17:21:43,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811090413] [2021-01-06 17:21:43,508 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 17:21:43,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:21:43,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 17:21:43,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:21:43,510 INFO L87 Difference]: Start difference. First operand 96 states and 113 transitions. Second operand 9 states. [2021-01-06 17:21:43,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:21:43,966 INFO L93 Difference]: Finished difference Result 166 states and 194 transitions. [2021-01-06 17:21:43,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 17:21:43,967 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2021-01-06 17:21:43,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:21:43,968 INFO L225 Difference]: With dead ends: 166 [2021-01-06 17:21:43,968 INFO L226 Difference]: Without dead ends: 103 [2021-01-06 17:21:43,969 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2021-01-06 17:21:43,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-01-06 17:21:43,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 93. [2021-01-06 17:21:43,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2021-01-06 17:21:43,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 109 transitions. [2021-01-06 17:21:43,977 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 109 transitions. Word has length 25 [2021-01-06 17:21:43,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:21:43,978 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 109 transitions. [2021-01-06 17:21:43,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 17:21:43,978 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 109 transitions. [2021-01-06 17:21:43,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-01-06 17:21:43,979 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:21:43,979 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 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 17:21:44,193 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-01-06 17:21:44,194 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 17:21:44,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:21:44,195 INFO L82 PathProgramCache]: Analyzing trace with hash 1388511663, now seen corresponding path program 1 times [2021-01-06 17:21:44,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:21:44,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422449061] [2021-01-06 17:21:44,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:21:44,210 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:21:44,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1985561587] [2021-01-06 17:21:44,210 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 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 17:21:44,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:21:44,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 7 conjunts are in the unsatisfiable core [2021-01-06 17:21:44,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:21:44,332 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:21:44,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422449061] [2021-01-06 17:21:44,332 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:21:44,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985561587] [2021-01-06 17:21:44,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:21:44,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-01-06 17:21:44,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285986510] [2021-01-06 17:21:44,333 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:21:44,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:21:44,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:21:44,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:21:44,334 INFO L87 Difference]: Start difference. First operand 93 states and 109 transitions. Second operand 6 states. [2021-01-06 17:21:44,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:21:44,370 INFO L93 Difference]: Finished difference Result 147 states and 173 transitions. [2021-01-06 17:21:44,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 17:21:44,371 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2021-01-06 17:21:44,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:21:44,372 INFO L225 Difference]: With dead ends: 147 [2021-01-06 17:21:44,372 INFO L226 Difference]: Without dead ends: 93 [2021-01-06 17:21:44,373 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:21:44,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-01-06 17:21:44,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2021-01-06 17:21:44,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2021-01-06 17:21:44,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 108 transitions. [2021-01-06 17:21:44,381 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 108 transitions. Word has length 28 [2021-01-06 17:21:44,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:21:44,381 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 108 transitions. [2021-01-06 17:21:44,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:21:44,381 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 108 transitions. [2021-01-06 17:21:44,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-01-06 17:21:44,382 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:21:44,382 INFO L422 BasicCegarLoop]: trace histogram [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, 1] [2021-01-06 17:21:44,596 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:21:44,597 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 17:21:44,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:21:44,598 INFO L82 PathProgramCache]: Analyzing trace with hash 332875516, now seen corresponding path program 1 times [2021-01-06 17:21:44,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:21:44,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156162501] [2021-01-06 17:21:44,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:21:44,609 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:21:44,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [235940516] [2021-01-06 17:21:44,609 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 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 17:21:44,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:21:44,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 9 conjunts are in the unsatisfiable core [2021-01-06 17:21:44,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:21:44,774 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:21:44,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156162501] [2021-01-06 17:21:44,774 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:21:44,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235940516] [2021-01-06 17:21:44,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:21:44,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-01-06 17:21:44,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913629779] [2021-01-06 17:21:44,775 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:21:44,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:21:44,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:21:44,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:21:44,777 INFO L87 Difference]: Start difference. First operand 93 states and 108 transitions. Second operand 7 states. [2021-01-06 17:21:44,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:21:44,813 INFO L93 Difference]: Finished difference Result 102 states and 117 transitions. [2021-01-06 17:21:44,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:21:44,813 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2021-01-06 17:21:44,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:21:44,814 INFO L225 Difference]: With dead ends: 102 [2021-01-06 17:21:44,815 INFO L226 Difference]: Without dead ends: 98 [2021-01-06 17:21:44,815 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:21:44,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-01-06 17:21:44,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2021-01-06 17:21:44,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2021-01-06 17:21:44,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 111 transitions. [2021-01-06 17:21:44,824 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 111 transitions. Word has length 34 [2021-01-06 17:21:44,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:21:44,824 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 111 transitions. [2021-01-06 17:21:44,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:21:44,824 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 111 transitions. [2021-01-06 17:21:44,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-01-06 17:21:44,825 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:21:44,825 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:21:45,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:21:45,041 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 17:21:45,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:21:45,042 INFO L82 PathProgramCache]: Analyzing trace with hash 1990599685, now seen corresponding path program 2 times [2021-01-06 17:21:45,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:21:45,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891624164] [2021-01-06 17:21:45,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:21:45,058 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:21:45,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [487753358] [2021-01-06 17:21:45,059 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 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 17:21:45,116 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:21:45,116 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:21:45,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 32 conjunts are in the unsatisfiable core [2021-01-06 17:21:45,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:21:45,315 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:21:45,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891624164] [2021-01-06 17:21:45,316 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:21:45,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487753358] [2021-01-06 17:21:45,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:21:45,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-01-06 17:21:45,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052615313] [2021-01-06 17:21:45,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 17:21:45,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:21:45,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 17:21:45,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:21:45,318 INFO L87 Difference]: Start difference. First operand 96 states and 111 transitions. Second operand 9 states. [2021-01-06 17:21:45,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:21:45,755 INFO L93 Difference]: Finished difference Result 181 states and 207 transitions. [2021-01-06 17:21:45,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 17:21:45,756 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2021-01-06 17:21:45,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:21:45,757 INFO L225 Difference]: With dead ends: 181 [2021-01-06 17:21:45,757 INFO L226 Difference]: Without dead ends: 175 [2021-01-06 17:21:45,758 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 17:21:45,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-01-06 17:21:45,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 116. [2021-01-06 17:21:45,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2021-01-06 17:21:45,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 136 transitions. [2021-01-06 17:21:45,769 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 136 transitions. Word has length 34 [2021-01-06 17:21:45,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:21:45,769 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 136 transitions. [2021-01-06 17:21:45,769 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 17:21:45,769 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 136 transitions. [2021-01-06 17:21:45,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-01-06 17:21:45,770 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:21:45,770 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:21:45,984 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-01-06 17:21:45,985 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 17:21:45,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:21:45,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1728467740, now seen corresponding path program 1 times [2021-01-06 17:21:45,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:21:45,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132256634] [2021-01-06 17:21:45,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:21:45,997 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:21:45,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [856185066] [2021-01-06 17:21:45,997 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 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 17:21:46,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:21:46,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 38 conjunts are in the unsatisfiable core [2021-01-06 17:21:46,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:21:46,398 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 17:21:46,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132256634] [2021-01-06 17:21:46,399 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:21:46,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856185066] [2021-01-06 17:21:46,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:21:46,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-01-06 17:21:46,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468037812] [2021-01-06 17:21:46,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-06 17:21:46,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:21:46,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-06 17:21:46,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-01-06 17:21:46,402 INFO L87 Difference]: Start difference. First operand 116 states and 136 transitions. Second operand 12 states. [2021-01-06 17:21:47,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:21:47,037 INFO L93 Difference]: Finished difference Result 187 states and 218 transitions. [2021-01-06 17:21:47,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-01-06 17:21:47,037 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 35 [2021-01-06 17:21:47,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:21:47,039 INFO L225 Difference]: With dead ends: 187 [2021-01-06 17:21:47,039 INFO L226 Difference]: Without dead ends: 179 [2021-01-06 17:21:47,040 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2021-01-06 17:21:47,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-01-06 17:21:47,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 138. [2021-01-06 17:21:47,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2021-01-06 17:21:47,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 162 transitions. [2021-01-06 17:21:47,053 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 162 transitions. Word has length 35 [2021-01-06 17:21:47,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:21:47,054 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 162 transitions. [2021-01-06 17:21:47,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-01-06 17:21:47,054 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 162 transitions. [2021-01-06 17:21:47,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-01-06 17:21:47,055 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:21:47,055 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:21:47,270 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-01-06 17:21:47,271 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 17:21:47,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:21:47,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1769158268, now seen corresponding path program 2 times [2021-01-06 17:21:47,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:21:47,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422198177] [2021-01-06 17:21:47,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:21:47,282 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:21:47,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2129676208] [2021-01-06 17:21:47,282 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 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 17:21:47,342 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:21:47,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:21:47,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 9 conjunts are in the unsatisfiable core [2021-01-06 17:21:47,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:21:47,413 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:21:47,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422198177] [2021-01-06 17:21:47,414 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:21:47,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129676208] [2021-01-06 17:21:47,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:21:47,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-01-06 17:21:47,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795198447] [2021-01-06 17:21:47,415 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:21:47,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:21:47,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:21:47,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:21:47,417 INFO L87 Difference]: Start difference. First operand 138 states and 162 transitions. Second operand 7 states. [2021-01-06 17:21:47,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:21:47,466 INFO L93 Difference]: Finished difference Result 206 states and 244 transitions. [2021-01-06 17:21:47,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 17:21:47,466 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2021-01-06 17:21:47,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:21:47,468 INFO L225 Difference]: With dead ends: 206 [2021-01-06 17:21:47,468 INFO L226 Difference]: Without dead ends: 142 [2021-01-06 17:21:47,471 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:21:47,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-01-06 17:21:47,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2021-01-06 17:21:47,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2021-01-06 17:21:47,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 166 transitions. [2021-01-06 17:21:47,486 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 166 transitions. Word has length 38 [2021-01-06 17:21:47,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:21:47,486 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 166 transitions. [2021-01-06 17:21:47,486 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:21:47,486 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 166 transitions. [2021-01-06 17:21:47,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-01-06 17:21:47,487 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:21:47,487 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:21:47,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-01-06 17:21:47,702 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:21:47,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:21:47,703 INFO L82 PathProgramCache]: Analyzing trace with hash -307935353, now seen corresponding path program 1 times [2021-01-06 17:21:47,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:21:47,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580083427] [2021-01-06 17:21:47,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:21:47,716 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:21:47,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [913878041] [2021-01-06 17:21:47,716 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 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 17:21:47,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:21:47,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 11 conjunts are in the unsatisfiable core [2021-01-06 17:21:47,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:21:47,866 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:21:47,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580083427] [2021-01-06 17:21:47,867 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:21:47,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913878041] [2021-01-06 17:21:47,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:21:47,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-06 17:21:47,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679589961] [2021-01-06 17:21:47,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:21:47,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:21:47,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:21:47,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:21:47,871 INFO L87 Difference]: Start difference. First operand 142 states and 166 transitions. Second operand 8 states. [2021-01-06 17:21:47,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:21:47,939 INFO L93 Difference]: Finished difference Result 218 states and 257 transitions. [2021-01-06 17:21:47,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 17:21:47,940 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 43 [2021-01-06 17:21:47,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:21:47,943 INFO L225 Difference]: With dead ends: 218 [2021-01-06 17:21:47,943 INFO L226 Difference]: Without dead ends: 154 [2021-01-06 17:21:47,945 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-01-06 17:21:47,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-01-06 17:21:47,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 152. [2021-01-06 17:21:47,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2021-01-06 17:21:47,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 176 transitions. [2021-01-06 17:21:47,965 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 176 transitions. Word has length 43 [2021-01-06 17:21:47,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:21:47,966 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 176 transitions. [2021-01-06 17:21:47,966 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:21:47,966 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 176 transitions. [2021-01-06 17:21:47,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-01-06 17:21:47,968 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:21:47,968 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:21:48,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:21:48,170 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:21:48,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:21:48,171 INFO L82 PathProgramCache]: Analyzing trace with hash -1736500463, now seen corresponding path program 2 times [2021-01-06 17:21:48,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:21:48,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741715280] [2021-01-06 17:21:48,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:21:48,181 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:21:48,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2124178155] [2021-01-06 17:21:48,181 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 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:21:48,245 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:21:48,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:21:48,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 11 conjunts are in the unsatisfiable core [2021-01-06 17:21:48,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:21:48,353 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:21:48,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741715280] [2021-01-06 17:21:48,354 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:21:48,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124178155] [2021-01-06 17:21:48,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:21:48,354 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-06 17:21:48,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175520098] [2021-01-06 17:21:48,355 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:21:48,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:21:48,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:21:48,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:21:48,356 INFO L87 Difference]: Start difference. First operand 152 states and 176 transitions. Second operand 8 states. [2021-01-06 17:21:48,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:21:48,408 INFO L93 Difference]: Finished difference Result 159 states and 183 transitions. [2021-01-06 17:21:48,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-06 17:21:48,408 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 44 [2021-01-06 17:21:48,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:21:48,410 INFO L225 Difference]: With dead ends: 159 [2021-01-06 17:21:48,410 INFO L226 Difference]: Without dead ends: 155 [2021-01-06 17:21:48,410 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:21:48,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-01-06 17:21:48,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2021-01-06 17:21:48,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2021-01-06 17:21:48,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 179 transitions. [2021-01-06 17:21:48,424 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 179 transitions. Word has length 44 [2021-01-06 17:21:48,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:21:48,425 INFO L481 AbstractCegarLoop]: Abstraction has 155 states and 179 transitions. [2021-01-06 17:21:48,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:21:48,425 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 179 transitions. [2021-01-06 17:21:48,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-01-06 17:21:48,425 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:21:48,426 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:21:48,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-01-06 17:21:48,640 INFO L429 AbstractCegarLoop]: === Iteration 18 === [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 17:21:48,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:21:48,640 INFO L82 PathProgramCache]: Analyzing trace with hash -78776294, now seen corresponding path program 3 times [2021-01-06 17:21:48,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:21:48,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7195837] [2021-01-06 17:21:48,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:21:48,650 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:21:48,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [541689457] [2021-01-06 17:21:48,650 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 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:21:48,710 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-01-06 17:21:48,710 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:21:48,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 24 conjunts are in the unsatisfiable core [2021-01-06 17:21:48,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:21:50,868 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-01-06 17:21:50,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7195837] [2021-01-06 17:21:50,872 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:21:50,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541689457] [2021-01-06 17:21:50,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:21:50,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-06 17:21:50,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341680440] [2021-01-06 17:21:50,873 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:21:50,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:21:50,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:21:50,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=29, Unknown=1, NotChecked=0, Total=42 [2021-01-06 17:21:50,878 INFO L87 Difference]: Start difference. First operand 155 states and 179 transitions. Second operand 7 states. [2021-01-06 17:21:57,878 WARN L197 SmtUtils]: Spent 4.02 s on a formula simplification that was a NOOP. DAG size: 17 [2021-01-06 17:22:05,938 WARN L197 SmtUtils]: Spent 8.05 s on a formula simplification. DAG size of input: 26 DAG size of output: 20 [2021-01-06 17:22:09,984 WARN L197 SmtUtils]: Spent 4.02 s on a formula simplification that was a NOOP. DAG size: 22 [2021-01-06 17:22:57,815 WARN L838 $PredicateComparison]: unable to prove that (and (let ((.cse0 (= c_ULTIMATE.start_main_~b~0 (* c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~y~0)))) (or (and (= 0 c_ULTIMATE.start___VERIFIER_assert_~cond) (not .cse0)) (and (= 1 c_ULTIMATE.start___VERIFIER_assert_~cond) .cse0))) (= (mod c_ULTIMATE.start_main_~a~0 (- 2)) 0) (= c_ULTIMATE.start_main_~b~0 (* 2 (* (div (* c_ULTIMATE.start_main_~a~0 (- 1)) (- 2)) c_ULTIMATE.start_main_~y~0)))) is different from false [2021-01-06 17:23:03,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:23:03,891 INFO L93 Difference]: Finished difference Result 199 states and 226 transitions. [2021-01-06 17:23:03,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 17:23:03,892 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 44 [2021-01-06 17:23:03,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:23:03,893 INFO L225 Difference]: With dead ends: 199 [2021-01-06 17:23:03,893 INFO L226 Difference]: Without dead ends: 193 [2021-01-06 17:23:03,894 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 37.5s TimeCoverageRelationStatistics Valid=45, Invalid=81, Unknown=10, NotChecked=20, Total=156 [2021-01-06 17:23:03,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-01-06 17:23:03,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 137. [2021-01-06 17:23:03,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2021-01-06 17:23:03,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 156 transitions. [2021-01-06 17:23:03,914 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 156 transitions. Word has length 44 [2021-01-06 17:23:03,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:23:03,914 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 156 transitions. [2021-01-06 17:23:03,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:23:03,914 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 156 transitions. [2021-01-06 17:23:03,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-01-06 17:23:03,915 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:23:03,915 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:23:04,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-01-06 17:23:04,129 INFO L429 AbstractCegarLoop]: === Iteration 19 === [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 17:23:04,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:23:04,130 INFO L82 PathProgramCache]: Analyzing trace with hash 2002321831, now seen corresponding path program 2 times [2021-01-06 17:23:04,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:23:04,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106008308] [2021-01-06 17:23:04,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:23:04,139 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:23:04,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [470687818] [2021-01-06 17:23:04,139 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 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:23:04,215 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:23:04,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:23:04,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 42 conjunts are in the unsatisfiable core [2021-01-06 17:23:04,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:23:04,644 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:23:04,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106008308] [2021-01-06 17:23:04,645 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:23:04,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470687818] [2021-01-06 17:23:04,645 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:23:04,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-01-06 17:23:04,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771393001] [2021-01-06 17:23:04,646 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-01-06 17:23:04,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:23:04,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-01-06 17:23:04,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-01-06 17:23:04,647 INFO L87 Difference]: Start difference. First operand 137 states and 156 transitions. Second operand 14 states. [2021-01-06 17:23:05,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:23:05,713 INFO L93 Difference]: Finished difference Result 199 states and 230 transitions. [2021-01-06 17:23:05,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-01-06 17:23:05,713 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 45 [2021-01-06 17:23:05,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:23:05,715 INFO L225 Difference]: With dead ends: 199 [2021-01-06 17:23:05,715 INFO L226 Difference]: Without dead ends: 191 [2021-01-06 17:23:05,716 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=182, Invalid=574, Unknown=0, NotChecked=0, Total=756 [2021-01-06 17:23:05,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-01-06 17:23:05,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 143. [2021-01-06 17:23:05,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2021-01-06 17:23:05,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 163 transitions. [2021-01-06 17:23:05,736 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 163 transitions. Word has length 45 [2021-01-06 17:23:05,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:23:05,737 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 163 transitions. [2021-01-06 17:23:05,737 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-01-06 17:23:05,737 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 163 transitions. [2021-01-06 17:23:05,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-01-06 17:23:05,737 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:23:05,738 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:23:05,950 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:23:05,951 INFO L429 AbstractCegarLoop]: === Iteration 20 === [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 17:23:05,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:23:05,951 INFO L82 PathProgramCache]: Analyzing trace with hash 762563284, now seen corresponding path program 3 times [2021-01-06 17:23:05,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:23:05,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246262872] [2021-01-06 17:23:05,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:23:05,962 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:23:05,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [631629728] [2021-01-06 17:23:05,962 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 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:23:06,010 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-01-06 17:23:06,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:23:06,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 30 conjunts are in the unsatisfiable core [2021-01-06 17:23:06,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:23:06,292 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-01-06 17:23:06,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246262872] [2021-01-06 17:23:06,293 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:23:06,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631629728] [2021-01-06 17:23:06,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:23:06,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-01-06 17:23:06,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812467817] [2021-01-06 17:23:06,294 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-06 17:23:06,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:23:06,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-06 17:23:06,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:23:06,295 INFO L87 Difference]: Start difference. First operand 143 states and 163 transitions. Second operand 10 states. [2021-01-06 17:23:15,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:23:15,230 INFO L93 Difference]: Finished difference Result 210 states and 246 transitions. [2021-01-06 17:23:15,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-01-06 17:23:15,230 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 49 [2021-01-06 17:23:15,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:23:15,232 INFO L225 Difference]: With dead ends: 210 [2021-01-06 17:23:15,232 INFO L226 Difference]: Without dead ends: 146 [2021-01-06 17:23:15,232 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 42 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 17:23:15,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-01-06 17:23:15,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 108. [2021-01-06 17:23:15,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2021-01-06 17:23:15,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 117 transitions. [2021-01-06 17:23:15,250 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 117 transitions. Word has length 49 [2021-01-06 17:23:15,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:23:15,250 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 117 transitions. [2021-01-06 17:23:15,251 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-06 17:23:15,251 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 117 transitions. [2021-01-06 17:23:15,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-01-06 17:23:15,251 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:23:15,251 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:23:15,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:23:15,466 INFO L429 AbstractCegarLoop]: === Iteration 21 === [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 17:23:15,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:23:15,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1005346468, now seen corresponding path program 2 times [2021-01-06 17:23:15,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:23:15,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190555738] [2021-01-06 17:23:15,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:23:15,478 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:23:15,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1938449380] [2021-01-06 17:23:15,479 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 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:23:15,551 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:23:15,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:23:15,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 6 conjunts are in the unsatisfiable core [2021-01-06 17:23:15,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:23:15,665 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 19 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:23:15,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190555738] [2021-01-06 17:23:15,666 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:23:15,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938449380] [2021-01-06 17:23:15,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:23:15,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-06 17:23:15,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746632827] [2021-01-06 17:23:15,667 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:23:15,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:23:15,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:23:15,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:23:15,668 INFO L87 Difference]: Start difference. First operand 108 states and 117 transitions. Second operand 7 states. [2021-01-06 17:23:15,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:23:15,946 INFO L93 Difference]: Finished difference Result 220 states and 237 transitions. [2021-01-06 17:23:15,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 17:23:15,947 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 53 [2021-01-06 17:23:15,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:23:15,948 INFO L225 Difference]: With dead ends: 220 [2021-01-06 17:23:15,948 INFO L226 Difference]: Without dead ends: 154 [2021-01-06 17:23:15,949 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:23:15,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-01-06 17:23:15,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 108. [2021-01-06 17:23:15,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2021-01-06 17:23:15,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 118 transitions. [2021-01-06 17:23:15,982 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 118 transitions. Word has length 53 [2021-01-06 17:23:15,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:23:15,983 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 118 transitions. [2021-01-06 17:23:15,983 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:23:15,983 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 118 transitions. [2021-01-06 17:23:15,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-01-06 17:23:15,984 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:23:15,984 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:23:16,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:23:16,199 INFO L429 AbstractCegarLoop]: === Iteration 22 === [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 17:23:16,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:23:16,200 INFO L82 PathProgramCache]: Analyzing trace with hash -1869464814, now seen corresponding path program 3 times [2021-01-06 17:23:16,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:23:16,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243547161] [2021-01-06 17:23:16,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:23:16,213 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:23:16,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [498308121] [2021-01-06 17:23:16,213 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 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:23:16,273 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-01-06 17:23:16,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:23:16,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 26 conjunts are in the unsatisfiable core [2021-01-06 17:23:16,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:23:16,394 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-01-06 17:23:16,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243547161] [2021-01-06 17:23:16,395 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:23:16,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498308121] [2021-01-06 17:23:16,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:23:16,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-06 17:23:16,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342575008] [2021-01-06 17:23:16,395 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:23:16,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:23:16,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:23:16,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:23:16,396 INFO L87 Difference]: Start difference. First operand 108 states and 118 transitions. Second operand 7 states. [2021-01-06 17:23:20,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:23:20,681 INFO L93 Difference]: Finished difference Result 126 states and 138 transitions. [2021-01-06 17:23:20,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-06 17:23:20,682 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 53 [2021-01-06 17:23:20,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:23:20,683 INFO L225 Difference]: With dead ends: 126 [2021-01-06 17:23:20,683 INFO L226 Difference]: Without dead ends: 111 [2021-01-06 17:23:20,683 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-01-06 17:23:20,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-01-06 17:23:20,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 105. [2021-01-06 17:23:20,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2021-01-06 17:23:20,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 114 transitions. [2021-01-06 17:23:20,700 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 114 transitions. Word has length 53 [2021-01-06 17:23:20,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:23:20,700 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 114 transitions. [2021-01-06 17:23:20,700 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:23:20,700 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 114 transitions. [2021-01-06 17:23:20,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-01-06 17:23:20,701 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:23:20,701 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:23:20,914 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-01-06 17:23:20,914 INFO L429 AbstractCegarLoop]: === Iteration 23 === [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 17:23:20,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:23:20,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1395693798, now seen corresponding path program 4 times [2021-01-06 17:23:20,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:23:20,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355253072] [2021-01-06 17:23:20,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:23:20,925 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:23:20,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1376837781] [2021-01-06 17:23:20,926 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 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:23:20,986 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-06 17:23:20,986 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:23:20,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 41 conjunts are in the unsatisfiable core [2021-01-06 17:23:20,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:23:21,354 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:23:21,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355253072] [2021-01-06 17:23:21,355 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:23:21,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376837781] [2021-01-06 17:23:21,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:23:21,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-01-06 17:23:21,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628226713] [2021-01-06 17:23:21,356 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-01-06 17:23:21,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:23:21,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-01-06 17:23:21,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-01-06 17:23:21,357 INFO L87 Difference]: Start difference. First operand 105 states and 114 transitions. Second operand 13 states. [2021-01-06 17:23:22,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:23:22,073 INFO L93 Difference]: Finished difference Result 188 states and 210 transitions. [2021-01-06 17:23:22,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-01-06 17:23:22,074 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 54 [2021-01-06 17:23:22,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:23:22,075 INFO L225 Difference]: With dead ends: 188 [2021-01-06 17:23:22,075 INFO L226 Difference]: Without dead ends: 182 [2021-01-06 17:23:22,076 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2021-01-06 17:23:22,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-01-06 17:23:22,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 111. [2021-01-06 17:23:22,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2021-01-06 17:23:22,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 121 transitions. [2021-01-06 17:23:22,094 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 121 transitions. Word has length 54 [2021-01-06 17:23:22,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:23:22,095 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 121 transitions. [2021-01-06 17:23:22,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-01-06 17:23:22,095 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 121 transitions. [2021-01-06 17:23:22,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-01-06 17:23:22,095 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:23:22,096 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:23:22,308 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-01-06 17:23:22,309 INFO L429 AbstractCegarLoop]: === Iteration 24 === [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 17:23:22,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:23:22,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1248935719, now seen corresponding path program 1 times [2021-01-06 17:23:22,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:23:22,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317245029] [2021-01-06 17:23:22,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:23:22,317 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:23:22,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1542627661] [2021-01-06 17:23:22,318 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 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:23:22,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:23:22,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 4 conjunts are in the unsatisfiable core [2021-01-06 17:23:22,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:23:22,462 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-01-06 17:23:22,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317245029] [2021-01-06 17:23:22,462 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:23:22,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542627661] [2021-01-06 17:23:22,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:23:22,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 17:23:22,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773331695] [2021-01-06 17:23:22,463 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:23:22,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:23:22,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:23:22,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:23:22,464 INFO L87 Difference]: Start difference. First operand 111 states and 121 transitions. Second operand 5 states. [2021-01-06 17:23:22,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:23:22,516 INFO L93 Difference]: Finished difference Result 181 states and 199 transitions. [2021-01-06 17:23:22,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 17:23:22,517 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 57 [2021-01-06 17:23:22,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:23:22,518 INFO L225 Difference]: With dead ends: 181 [2021-01-06 17:23:22,518 INFO L226 Difference]: Without dead ends: 115 [2021-01-06 17:23:22,518 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:23:22,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-01-06 17:23:22,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 104. [2021-01-06 17:23:22,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2021-01-06 17:23:22,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 111 transitions. [2021-01-06 17:23:22,535 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 111 transitions. Word has length 57 [2021-01-06 17:23:22,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:23:22,535 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 111 transitions. [2021-01-06 17:23:22,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:23:22,535 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 111 transitions. [2021-01-06 17:23:22,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-01-06 17:23:22,536 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:23:22,536 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:23:22,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:23:22,750 INFO L429 AbstractCegarLoop]: === Iteration 25 === [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 17:23:22,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:23:22,750 INFO L82 PathProgramCache]: Analyzing trace with hash 62330478, now seen corresponding path program 3 times [2021-01-06 17:23:22,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:23:22,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891541960] [2021-01-06 17:23:22,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:23:22,758 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:23:22,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [746649151] [2021-01-06 17:23:22,759 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 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:23:22,811 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-01-06 17:23:22,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:23:22,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 29 conjunts are in the unsatisfiable core [2021-01-06 17:23:22,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:23:27,167 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-01-06 17:23:27,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891541960] [2021-01-06 17:23:27,167 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:23:27,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746649151] [2021-01-06 17:23:27,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:23:27,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-06 17:23:27,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009179945] [2021-01-06 17:23:27,168 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:23:27,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:23:27,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:23:27,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=35, Unknown=1, NotChecked=0, Total=56 [2021-01-06 17:23:27,169 INFO L87 Difference]: Start difference. First operand 104 states and 111 transitions. Second operand 8 states. [2021-01-06 17:23:33,215 WARN L197 SmtUtils]: Spent 4.02 s on a formula simplification that was a NOOP. DAG size: 22 [2021-01-06 17:23:41,726 WARN L197 SmtUtils]: Spent 8.50 s on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-01-06 17:24:09,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:24:09,171 INFO L93 Difference]: Finished difference Result 122 states and 130 transitions. [2021-01-06 17:24:09,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 17:24:09,172 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2021-01-06 17:24:09,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:24:09,173 INFO L225 Difference]: With dead ends: 122 [2021-01-06 17:24:09,173 INFO L226 Difference]: Without dead ends: 115 [2021-01-06 17:24:09,174 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 28.9s TimeCoverageRelationStatistics Valid=57, Invalid=92, Unknown=7, NotChecked=0, Total=156 [2021-01-06 17:24:09,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-01-06 17:24:09,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 114. [2021-01-06 17:24:09,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2021-01-06 17:24:09,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 122 transitions. [2021-01-06 17:24:09,204 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 122 transitions. Word has length 58 [2021-01-06 17:24:09,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:24:09,205 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 122 transitions. [2021-01-06 17:24:09,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:24:09,205 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 122 transitions. [2021-01-06 17:24:09,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-01-06 17:24:09,206 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:24:09,206 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:24:09,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-01-06 17:24:09,407 INFO L429 AbstractCegarLoop]: === Iteration 26 === [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 17:24:09,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:24:09,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1646664921, now seen corresponding path program 4 times [2021-01-06 17:24:09,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:24:09,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156879665] [2021-01-06 17:24:09,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:24:09,416 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:24:09,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1318622570] [2021-01-06 17:24:09,416 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 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:24:09,479 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-06 17:24:09,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:24:09,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 57 conjunts are in the unsatisfiable core [2021-01-06 17:24:09,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:24:10,359 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:24:10,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156879665] [2021-01-06 17:24:10,359 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:24:10,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318622570] [2021-01-06 17:24:10,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:24:10,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2021-01-06 17:24:10,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376236800] [2021-01-06 17:24:10,360 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-01-06 17:24:10,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:24:10,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-01-06 17:24:10,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2021-01-06 17:24:10,361 INFO L87 Difference]: Start difference. First operand 114 states and 122 transitions. Second operand 17 states. [2021-01-06 17:24:11,292 WARN L197 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 40 [2021-01-06 17:24:12,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:24:12,289 INFO L93 Difference]: Finished difference Result 201 states and 217 transitions. [2021-01-06 17:24:12,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-01-06 17:24:12,291 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 63 [2021-01-06 17:24:12,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:24:12,291 INFO L225 Difference]: With dead ends: 201 [2021-01-06 17:24:12,292 INFO L226 Difference]: Without dead ends: 115 [2021-01-06 17:24:12,292 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=123, Invalid=747, Unknown=0, NotChecked=0, Total=870 [2021-01-06 17:24:12,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-01-06 17:24:12,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 114. [2021-01-06 17:24:12,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2021-01-06 17:24:12,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 121 transitions. [2021-01-06 17:24:12,311 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 121 transitions. Word has length 63 [2021-01-06 17:24:12,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:24:12,311 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 121 transitions. [2021-01-06 17:24:12,311 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-01-06 17:24:12,311 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 121 transitions. [2021-01-06 17:24:12,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-01-06 17:24:12,312 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:24:12,312 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:24:12,525 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:24:12,526 INFO L429 AbstractCegarLoop]: === Iteration 27 === [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 17:24:12,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:24:12,526 INFO L82 PathProgramCache]: Analyzing trace with hash -1305309061, now seen corresponding path program 5 times [2021-01-06 17:24:12,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:24:12,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731559565] [2021-01-06 17:24:12,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:24:12,534 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:24:12,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1079765466] [2021-01-06 17:24:12,535 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 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:24:12,606 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-01-06 17:24:12,607 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:24:12,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 13 conjunts are in the unsatisfiable core [2021-01-06 17:24:12,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:24:12,738 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 90 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:24:12,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731559565] [2021-01-06 17:24:12,739 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:24:12,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079765466] [2021-01-06 17:24:12,739 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:24:12,739 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-06 17:24:12,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677454094] [2021-01-06 17:24:12,739 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 17:24:12,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:24:12,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 17:24:12,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:24:12,740 INFO L87 Difference]: Start difference. First operand 114 states and 121 transitions. Second operand 9 states. [2021-01-06 17:24:12,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:24:12,808 INFO L93 Difference]: Finished difference Result 121 states and 128 transitions. [2021-01-06 17:24:12,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 17:24:12,808 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2021-01-06 17:24:12,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:24:12,808 INFO L225 Difference]: With dead ends: 121 [2021-01-06 17:24:12,808 INFO L226 Difference]: Without dead ends: 0 [2021-01-06 17:24:12,809 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:24:12,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-01-06 17:24:12,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-01-06 17:24:12,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-01-06 17:24:12,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-01-06 17:24:12,810 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 64 [2021-01-06 17:24:12,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:24:12,810 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-01-06 17:24:12,810 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 17:24:12,810 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-01-06 17:24:12,810 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-06 17:24:13,024 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-01-06 17:24:13,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-01-06 17:24:13,258 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 119 [2021-01-06 17:24:13,624 WARN L197 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 156 [2021-01-06 17:24:13,784 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 112 [2021-01-06 17:24:26,343 WARN L197 SmtUtils]: Spent 12.50 s on a formula simplification. DAG size of input: 88 DAG size of output: 63 [2021-01-06 17:24:27,446 WARN L197 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 114 DAG size of output: 81 [2021-01-06 17:24:30,586 WARN L197 SmtUtils]: Spent 3.14 s on a formula simplification. DAG size of input: 118 DAG size of output: 62 [2021-01-06 17:24:31,365 WARN L197 SmtUtils]: Spent 777.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 68 [2021-01-06 17:25:49,344 WARN L197 SmtUtils]: Spent 1.30 m on a formula simplification. DAG size of input: 157 DAG size of output: 91 [2021-01-06 17:26:03,951 WARN L197 SmtUtils]: Spent 14.60 s on a formula simplification. DAG size of input: 100 DAG size of output: 63