/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_valuebound50.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 07:28:31,786 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 07:28:31,790 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 07:28:31,842 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 07:28:31,842 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 07:28:31,844 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 07:28:31,845 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 07:28:31,848 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 07:28:31,850 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 07:28:31,851 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 07:28:31,861 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 07:28:31,867 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 07:28:31,870 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 07:28:31,872 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 07:28:31,873 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 07:28:31,874 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 07:28:31,875 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 07:28:31,876 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 07:28:31,878 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 07:28:31,880 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 07:28:31,882 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 07:28:31,883 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 07:28:31,885 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 07:28:31,886 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 07:28:31,889 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 07:28:31,898 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 07:28:31,899 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 07:28:31,900 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 07:28:31,901 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 07:28:31,926 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 07:28:31,927 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 07:28:31,928 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 07:28:31,929 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 07:28:31,929 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 07:28:31,929 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 07:28:31,930 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 07:28:31,930 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 07:28:31,930 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 07:28:31,930 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 07:28:31,931 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 07:28:31,931 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 07:28:31,933 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 07:28:31,933 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 07:28:31,934 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 07:28:31,934 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 07:28:31,934 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 07:28:31,934 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 07:28:31,934 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 07:28:31,935 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 07:28:31,935 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 07:28:31,935 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 07:28:31,935 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 07:28:31,936 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 07:28:31,936 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 07:28:31,936 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 07:28:32,322 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 07:28:32,350 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 07:28:32,353 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 07:28:32,354 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 07:28:32,355 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 07:28:32,356 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound50.c [2020-12-23 07:28:32,440 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/763468709/aacd04f581ea4cf59e848167c5815e6e/FLAGb1e039098 [2020-12-23 07:28:33,078 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 07:28:33,079 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound50.c [2020-12-23 07:28:33,087 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/763468709/aacd04f581ea4cf59e848167c5815e6e/FLAGb1e039098 [2020-12-23 07:28:33,450 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/763468709/aacd04f581ea4cf59e848167c5815e6e [2020-12-23 07:28:33,453 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 07:28:33,455 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 07:28:33,457 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 07:28:33,457 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 07:28:33,461 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 07:28:33,462 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:28:33" (1/1) ... [2020-12-23 07:28:33,464 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9250fe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:28:33, skipping insertion in model container [2020-12-23 07:28:33,464 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:28:33" (1/1) ... [2020-12-23 07:28:33,473 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 07:28:33,494 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 07:28:33,703 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_valuebound50.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,] [2020-12-23 07:28:33,731 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:28:33,742 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 07:28:33,756 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_valuebound50.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,] [2020-12-23 07:28:33,765 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:28:33,783 INFO L208 MainTranslator]: Completed translation [2020-12-23 07:28:33,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:28:33 WrapperNode [2020-12-23 07:28:33,783 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 07:28:33,785 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 07:28:33,785 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 07:28:33,785 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 07:28:33,794 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:28:33" (1/1) ... [2020-12-23 07:28:33,803 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:28:33" (1/1) ... [2020-12-23 07:28:33,828 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 07:28:33,829 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 07:28:33,829 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 07:28:33,829 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 07:28:33,841 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:28:33" (1/1) ... [2020-12-23 07:28:33,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:28:33" (1/1) ... [2020-12-23 07:28:33,843 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:28:33" (1/1) ... [2020-12-23 07:28:33,844 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:28:33" (1/1) ... [2020-12-23 07:28:33,849 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:28:33" (1/1) ... [2020-12-23 07:28:33,854 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:28:33" (1/1) ... [2020-12-23 07:28:33,856 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:28:33" (1/1) ... [2020-12-23 07:28:33,859 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 07:28:33,860 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 07:28:33,860 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 07:28:33,860 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 07:28:33,861 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:28:33" (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 [2020-12-23 07:28:33,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 07:28:33,974 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 07:28:33,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 07:28:33,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 07:28:34,452 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 07:28:34,452 INFO L299 CfgBuilder]: Removed 26 assume(true) statements. [2020-12-23 07:28:34,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:28:34 BoogieIcfgContainer [2020-12-23 07:28:34,458 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 07:28:34,460 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 07:28:34,460 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 07:28:34,469 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 07:28:34,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 07:28:33" (1/3) ... [2020-12-23 07:28:34,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c6e306d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:28:34, skipping insertion in model container [2020-12-23 07:28:34,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:28:33" (2/3) ... [2020-12-23 07:28:34,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c6e306d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:28:34, skipping insertion in model container [2020-12-23 07:28:34,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:28:34" (3/3) ... [2020-12-23 07:28:34,476 INFO L111 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_valuebound50.c [2020-12-23 07:28:34,503 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 07:28:34,508 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-12-23 07:28:34,535 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-23 07:28:34,562 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 07:28:34,562 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 07:28:34,562 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 07:28:34,562 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 07:28:34,563 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 07:28:34,563 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 07:28:34,563 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 07:28:34,563 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 07:28:34,580 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-12-23 07:28:34,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 07:28:34,586 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:28:34,587 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:28:34,587 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:28:34,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:28:34,594 INFO L82 PathProgramCache]: Analyzing trace with hash 330581779, now seen corresponding path program 1 times [2020-12-23 07:28:34,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:28:34,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349286685] [2020-12-23 07:28:34,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:28:34,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:28:34,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:28:34,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349286685] [2020-12-23 07:28:34,767 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:28:34,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 07:28:34,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118350132] [2020-12-23 07:28:34,774 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 07:28:34,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:28:34,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 07:28:34,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 07:28:34,795 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2020-12-23 07:28:34,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:28:34,821 INFO L93 Difference]: Finished difference Result 83 states and 112 transitions. [2020-12-23 07:28:34,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 07:28:34,823 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-12-23 07:28:34,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:28:34,836 INFO L225 Difference]: With dead ends: 83 [2020-12-23 07:28:34,836 INFO L226 Difference]: Without dead ends: 39 [2020-12-23 07:28:34,840 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 07:28:34,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-12-23 07:28:34,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-12-23 07:28:34,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-12-23 07:28:34,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2020-12-23 07:28:34,886 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 11 [2020-12-23 07:28:34,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:28:34,886 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2020-12-23 07:28:34,887 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 07:28:34,887 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2020-12-23 07:28:34,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 07:28:34,888 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:28:34,888 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:28:34,888 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 07:28:34,889 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:28:34,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:28:34,890 INFO L82 PathProgramCache]: Analyzing trace with hash -1507472743, now seen corresponding path program 1 times [2020-12-23 07:28:34,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:28:34,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103283981] [2020-12-23 07:28:34,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:28:34,917 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:28:34,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [85635537] [2020-12-23 07:28:34,918 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 [2020-12-23 07:28:35,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:28:35,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-23 07:28:35,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:28:35,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:28:35,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103283981] [2020-12-23 07:28:35,256 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:28:35,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85635537] [2020-12-23 07:28:35,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:28:35,257 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-23 07:28:35,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230715374] [2020-12-23 07:28:35,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 07:28:35,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:28:35,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 07:28:35,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:28:35,263 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand 9 states. [2020-12-23 07:28:35,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:28:35,770 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2020-12-23 07:28:35,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 07:28:35,771 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 11 [2020-12-23 07:28:35,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:28:35,775 INFO L225 Difference]: With dead ends: 52 [2020-12-23 07:28:35,775 INFO L226 Difference]: Without dead ends: 50 [2020-12-23 07:28:35,779 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2020-12-23 07:28:35,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-12-23 07:28:35,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 41. [2020-12-23 07:28:35,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-12-23 07:28:35,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2020-12-23 07:28:35,803 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 11 [2020-12-23 07:28:35,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:28:35,804 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2020-12-23 07:28:35,805 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 07:28:35,805 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2020-12-23 07:28:35,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 07:28:35,806 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:28:35,807 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:28:36,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-23 07:28:36,022 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:28:36,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:28:36,023 INFO L82 PathProgramCache]: Analyzing trace with hash -1277171076, now seen corresponding path program 1 times [2020-12-23 07:28:36,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:28:36,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032899861] [2020-12-23 07:28:36,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:28:36,045 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:28:36,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1830314731] [2020-12-23 07:28:36,046 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 [2020-12-23 07:28:36,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:28:36,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-23 07:28:36,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:28:36,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:28:36,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032899861] [2020-12-23 07:28:36,432 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:28:36,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830314731] [2020-12-23 07:28:36,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:28:36,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-23 07:28:36,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223747876] [2020-12-23 07:28:36,435 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 07:28:36,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:28:36,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 07:28:36,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:28:36,439 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand 10 states. [2020-12-23 07:28:37,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:28:37,079 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2020-12-23 07:28:37,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 07:28:37,080 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-12-23 07:28:37,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:28:37,081 INFO L225 Difference]: With dead ends: 70 [2020-12-23 07:28:37,082 INFO L226 Difference]: Without dead ends: 60 [2020-12-23 07:28:37,082 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2020-12-23 07:28:37,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-12-23 07:28:37,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 53. [2020-12-23 07:28:37,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-12-23 07:28:37,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2020-12-23 07:28:37,092 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 13 [2020-12-23 07:28:37,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:28:37,092 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2020-12-23 07:28:37,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 07:28:37,093 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2020-12-23 07:28:37,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-23 07:28:37,093 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:28:37,093 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:28:37,306 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:28:37,307 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:28:37,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:28:37,309 INFO L82 PathProgramCache]: Analyzing trace with hash 916732292, now seen corresponding path program 1 times [2020-12-23 07:28:37,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:28:37,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76566499] [2020-12-23 07:28:37,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:28:37,326 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:28:37,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1305530821] [2020-12-23 07:28:37,327 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 [2020-12-23 07:28:37,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:28:37,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-23 07:28:37,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:28:37,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:28:37,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76566499] [2020-12-23 07:28:37,447 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:28:37,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305530821] [2020-12-23 07:28:37,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:28:37,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 07:28:37,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190137016] [2020-12-23 07:28:37,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 07:28:37,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:28:37,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 07:28:37,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:28:37,449 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 5 states. [2020-12-23 07:28:37,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:28:37,609 INFO L93 Difference]: Finished difference Result 95 states and 103 transitions. [2020-12-23 07:28:37,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 07:28:37,610 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-12-23 07:28:37,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:28:37,611 INFO L225 Difference]: With dead ends: 95 [2020-12-23 07:28:37,611 INFO L226 Difference]: Without dead ends: 89 [2020-12-23 07:28:37,612 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:28:37,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-12-23 07:28:37,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 72. [2020-12-23 07:28:37,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-12-23 07:28:37,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 80 transitions. [2020-12-23 07:28:37,624 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 80 transitions. Word has length 16 [2020-12-23 07:28:37,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:28:37,625 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 80 transitions. [2020-12-23 07:28:37,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 07:28:37,625 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 80 transitions. [2020-12-23 07:28:37,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-23 07:28:37,626 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:28:37,626 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:28:37,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:28:37,840 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:28:37,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:28:37,841 INFO L82 PathProgramCache]: Analyzing trace with hash -1552659725, now seen corresponding path program 1 times [2020-12-23 07:28:37,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:28:37,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430977635] [2020-12-23 07:28:37,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:28:37,867 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:28:37,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [209899605] [2020-12-23 07:28:37,868 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 [2020-12-23 07:28:37,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:28:37,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 26 conjunts are in the unsatisfiable core [2020-12-23 07:28:37,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:28:38,032 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:28:38,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430977635] [2020-12-23 07:28:38,033 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:28:38,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209899605] [2020-12-23 07:28:38,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:28:38,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 07:28:38,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052030530] [2020-12-23 07:28:38,034 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:28:38,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:28:38,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:28:38,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:28:38,035 INFO L87 Difference]: Start difference. First operand 72 states and 80 transitions. Second operand 8 states. [2020-12-23 07:28:38,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:28:38,385 INFO L93 Difference]: Finished difference Result 129 states and 139 transitions. [2020-12-23 07:28:38,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 07:28:38,385 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2020-12-23 07:28:38,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:28:38,390 INFO L225 Difference]: With dead ends: 129 [2020-12-23 07:28:38,390 INFO L226 Difference]: Without dead ends: 123 [2020-12-23 07:28:38,391 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-12-23 07:28:38,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-12-23 07:28:38,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 90. [2020-12-23 07:28:38,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-12-23 07:28:38,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 102 transitions. [2020-12-23 07:28:38,424 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 102 transitions. Word has length 25 [2020-12-23 07:28:38,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:28:38,424 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 102 transitions. [2020-12-23 07:28:38,424 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:28:38,424 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 102 transitions. [2020-12-23 07:28:38,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-23 07:28:38,426 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:28:38,426 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:28:38,641 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:28:38,643 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:28:38,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:28:38,643 INFO L82 PathProgramCache]: Analyzing trace with hash 1755069467, now seen corresponding path program 1 times [2020-12-23 07:28:38,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:28:38,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18762515] [2020-12-23 07:28:38,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:28:38,658 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:28:38,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [544046534] [2020-12-23 07:28:38,659 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 [2020-12-23 07:28:38,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:28:38,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-23 07:28:38,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:28:38,888 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:28:38,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18762515] [2020-12-23 07:28:38,889 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:28:38,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544046534] [2020-12-23 07:28:38,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:28:38,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-23 07:28:38,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262970637] [2020-12-23 07:28:38,890 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 07:28:38,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:28:38,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 07:28:38,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:28:38,891 INFO L87 Difference]: Start difference. First operand 90 states and 102 transitions. Second operand 9 states. [2020-12-23 07:28:39,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:28:39,364 INFO L93 Difference]: Finished difference Result 155 states and 174 transitions. [2020-12-23 07:28:39,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 07:28:39,365 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2020-12-23 07:28:39,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:28:39,366 INFO L225 Difference]: With dead ends: 155 [2020-12-23 07:28:39,367 INFO L226 Difference]: Without dead ends: 96 [2020-12-23 07:28:39,370 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2020-12-23 07:28:39,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-12-23 07:28:39,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 90. [2020-12-23 07:28:39,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-12-23 07:28:39,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 101 transitions. [2020-12-23 07:28:39,396 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 101 transitions. Word has length 26 [2020-12-23 07:28:39,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:28:39,397 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 101 transitions. [2020-12-23 07:28:39,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 07:28:39,397 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 101 transitions. [2020-12-23 07:28:39,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-23 07:28:39,403 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:28:39,404 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:28:39,604 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-12-23 07:28:39,605 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:28:39,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:28:39,606 INFO L82 PathProgramCache]: Analyzing trace with hash 1828677220, now seen corresponding path program 2 times [2020-12-23 07:28:39,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:28:39,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923990177] [2020-12-23 07:28:39,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:28:39,622 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:28:39,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2133717172] [2020-12-23 07:28:39,623 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:28:39,698 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:28:39,698 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:28:39,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 30 conjunts are in the unsatisfiable core [2020-12-23 07:28:39,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:28:39,850 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:28:39,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923990177] [2020-12-23 07:28:39,851 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:28:39,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133717172] [2020-12-23 07:28:39,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:28:39,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-23 07:28:39,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161845452] [2020-12-23 07:28:39,852 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 07:28:39,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:28:39,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 07:28:39,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:28:39,853 INFO L87 Difference]: Start difference. First operand 90 states and 101 transitions. Second operand 9 states. [2020-12-23 07:28:40,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:28:40,353 INFO L93 Difference]: Finished difference Result 163 states and 174 transitions. [2020-12-23 07:28:40,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 07:28:40,354 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-12-23 07:28:40,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:28:40,358 INFO L225 Difference]: With dead ends: 163 [2020-12-23 07:28:40,358 INFO L226 Difference]: Without dead ends: 157 [2020-12-23 07:28:40,360 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 [2020-12-23 07:28:40,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-12-23 07:28:40,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 108. [2020-12-23 07:28:40,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-12-23 07:28:40,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 123 transitions. [2020-12-23 07:28:40,390 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 123 transitions. Word has length 34 [2020-12-23 07:28:40,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:28:40,392 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 123 transitions. [2020-12-23 07:28:40,392 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 07:28:40,392 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 123 transitions. [2020-12-23 07:28:40,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-23 07:28:40,396 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:28:40,397 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:28:40,610 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:28:40,611 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:28:40,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:28:40,612 INFO L82 PathProgramCache]: Analyzing trace with hash -797667638, now seen corresponding path program 1 times [2020-12-23 07:28:40,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:28:40,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806509820] [2020-12-23 07:28:40,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:28:40,630 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:28:40,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1321548431] [2020-12-23 07:28:40,634 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 [2020-12-23 07:28:40,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:28:40,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 36 conjunts are in the unsatisfiable core [2020-12-23 07:28:40,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:28:41,016 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:28:41,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806509820] [2020-12-23 07:28:41,017 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:28:41,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321548431] [2020-12-23 07:28:41,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:28:41,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-12-23 07:28:41,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719522697] [2020-12-23 07:28:41,018 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-23 07:28:41,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:28:41,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-23 07:28:41,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-12-23 07:28:41,019 INFO L87 Difference]: Start difference. First operand 108 states and 123 transitions. Second operand 12 states. [2020-12-23 07:28:41,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:28:41,789 INFO L93 Difference]: Finished difference Result 173 states and 196 transitions. [2020-12-23 07:28:41,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-23 07:28:41,790 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 35 [2020-12-23 07:28:41,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:28:41,794 INFO L225 Difference]: With dead ends: 173 [2020-12-23 07:28:41,794 INFO L226 Difference]: Without dead ends: 163 [2020-12-23 07:28:41,796 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-12-23 07:28:41,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-12-23 07:28:41,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 130. [2020-12-23 07:28:41,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-12-23 07:28:41,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 147 transitions. [2020-12-23 07:28:41,844 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 147 transitions. Word has length 35 [2020-12-23 07:28:41,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:28:41,844 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 147 transitions. [2020-12-23 07:28:41,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-23 07:28:41,844 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 147 transitions. [2020-12-23 07:28:41,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-23 07:28:41,846 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:28:41,846 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:28:42,046 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:28:42,047 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:28:42,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:28:42,049 INFO L82 PathProgramCache]: Analyzing trace with hash -1020421613, now seen corresponding path program 3 times [2020-12-23 07:28:42,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:28:42,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896129875] [2020-12-23 07:28:42,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:28:42,076 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:28:42,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1378537911] [2020-12-23 07:28:42,076 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:28:42,154 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-23 07:28:42,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:28:42,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-23 07:28:42,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:28:44,291 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-23 07:28:44,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896129875] [2020-12-23 07:28:44,291 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:28:44,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378537911] [2020-12-23 07:28:44,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:28:44,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 07:28:44,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472545572] [2020-12-23 07:28:44,292 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 07:28:44,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:28:44,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 07:28:44,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=28, Unknown=1, NotChecked=0, Total=42 [2020-12-23 07:28:44,293 INFO L87 Difference]: Start difference. First operand 130 states and 147 transitions. Second operand 7 states. [2020-12-23 07:28:50,393 WARN L197 SmtUtils]: Spent 4.02 s on a formula simplification that was a NOOP. DAG size: 17 [2020-12-23 07:28:58,454 WARN L197 SmtUtils]: Spent 8.05 s on a formula simplification. DAG size of input: 25 DAG size of output: 20 [2020-12-23 07:29:02,501 WARN L197 SmtUtils]: Spent 4.02 s on a formula simplification that was a NOOP. DAG size: 22 [2020-12-23 07:29:23,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:29:23,344 INFO L93 Difference]: Finished difference Result 130 states and 147 transitions. [2020-12-23 07:29:23,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 07:29:23,345 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 43 [2020-12-23 07:29:23,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:29:23,346 INFO L225 Difference]: With dead ends: 130 [2020-12-23 07:29:23,346 INFO L226 Difference]: Without dead ends: 124 [2020-12-23 07:29:23,346 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 34.4s TimeCoverageRelationStatistics Valid=52, Invalid=95, Unknown=9, NotChecked=0, Total=156 [2020-12-23 07:29:23,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-12-23 07:29:23,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 69. [2020-12-23 07:29:23,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-12-23 07:29:23,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 72 transitions. [2020-12-23 07:29:23,360 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 72 transitions. Word has length 43 [2020-12-23 07:29:23,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:29:23,360 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 72 transitions. [2020-12-23 07:29:23,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 07:29:23,360 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 72 transitions. [2020-12-23 07:29:23,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-23 07:29:23,361 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:29:23,361 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:29:23,562 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-12-23 07:29:23,563 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:29:23,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:29:23,563 INFO L82 PathProgramCache]: Analyzing trace with hash 1074581755, now seen corresponding path program 2 times [2020-12-23 07:29:23,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:29:23,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162431977] [2020-12-23 07:29:23,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:29:23,579 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:29:23,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1422830113] [2020-12-23 07:29:23,580 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:29:23,665 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:29:23,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:29:23,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 46 conjunts are in the unsatisfiable core [2020-12-23 07:29:23,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:29:24,410 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 07:29:24,419 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:29:24,463 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:29:24,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162431977] [2020-12-23 07:29:24,464 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:29:24,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422830113] [2020-12-23 07:29:24,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:29:24,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-12-23 07:29:24,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107121969] [2020-12-23 07:29:24,466 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-23 07:29:24,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:29:24,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-23 07:29:24,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2020-12-23 07:29:24,467 INFO L87 Difference]: Start difference. First operand 69 states and 72 transitions. Second operand 16 states. [2020-12-23 07:29:24,979 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 33 [2020-12-23 07:29:26,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:29:26,063 INFO L93 Difference]: Finished difference Result 119 states and 125 transitions. [2020-12-23 07:29:26,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-23 07:29:26,064 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 44 [2020-12-23 07:29:26,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:29:26,066 INFO L225 Difference]: With dead ends: 119 [2020-12-23 07:29:26,066 INFO L226 Difference]: Without dead ends: 109 [2020-12-23 07:29:26,067 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=228, Invalid=764, Unknown=0, NotChecked=0, Total=992 [2020-12-23 07:29:26,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-12-23 07:29:26,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 78. [2020-12-23 07:29:26,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-12-23 07:29:26,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 82 transitions. [2020-12-23 07:29:26,082 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 82 transitions. Word has length 44 [2020-12-23 07:29:26,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:29:26,082 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 82 transitions. [2020-12-23 07:29:26,082 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-23 07:29:26,082 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 82 transitions. [2020-12-23 07:29:26,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-12-23 07:29:26,083 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:29:26,083 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:29:26,296 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:29:26,297 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:29:26,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:29:26,298 INFO L82 PathProgramCache]: Analyzing trace with hash 1128629901, now seen corresponding path program 3 times [2020-12-23 07:29:26,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:29:26,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225993516] [2020-12-23 07:29:26,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:29:26,312 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:29:26,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [128487355] [2020-12-23 07:29:26,312 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:29:26,368 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-23 07:29:26,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:29:26,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 30 conjunts are in the unsatisfiable core [2020-12-23 07:29:26,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:29:26,635 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-23 07:29:26,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225993516] [2020-12-23 07:29:26,635 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:29:26,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128487355] [2020-12-23 07:29:26,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:29:26,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-23 07:29:26,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868659205] [2020-12-23 07:29:26,636 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 07:29:26,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:29:26,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 07:29:26,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:29:26,637 INFO L87 Difference]: Start difference. First operand 78 states and 82 transitions. Second operand 10 states. [2020-12-23 07:29:31,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:29:31,248 INFO L93 Difference]: Finished difference Result 129 states and 141 transitions. [2020-12-23 07:29:31,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 07:29:31,249 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 48 [2020-12-23 07:29:31,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:29:31,250 INFO L225 Difference]: With dead ends: 129 [2020-12-23 07:29:31,250 INFO L226 Difference]: Without dead ends: 94 [2020-12-23 07:29:31,251 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-12-23 07:29:31,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-12-23 07:29:31,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 86. [2020-12-23 07:29:31,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-12-23 07:29:31,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 91 transitions. [2020-12-23 07:29:31,270 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 91 transitions. Word has length 48 [2020-12-23 07:29:31,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:29:31,270 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 91 transitions. [2020-12-23 07:29:31,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 07:29:31,271 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 91 transitions. [2020-12-23 07:29:31,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-23 07:29:31,272 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:29:31,272 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:29:31,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:29:31,487 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:29:31,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:29:31,488 INFO L82 PathProgramCache]: Analyzing trace with hash -1934789142, now seen corresponding path program 4 times [2020-12-23 07:29:31,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:29:31,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370872634] [2020-12-23 07:29:31,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:29:31,501 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:29:31,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [398463005] [2020-12-23 07:29:31,501 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:29:31,562 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 07:29:31,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:29:31,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 44 conjunts are in the unsatisfiable core [2020-12-23 07:29:31,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:29:32,060 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:29:32,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370872634] [2020-12-23 07:29:32,061 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:29:32,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398463005] [2020-12-23 07:29:32,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:29:32,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-12-23 07:29:32,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177806900] [2020-12-23 07:29:32,062 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-23 07:29:32,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:29:32,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-23 07:29:32,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2020-12-23 07:29:32,063 INFO L87 Difference]: Start difference. First operand 86 states and 91 transitions. Second operand 15 states. [2020-12-23 07:29:33,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:29:33,531 INFO L93 Difference]: Finished difference Result 137 states and 146 transitions. [2020-12-23 07:29:33,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-23 07:29:33,532 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 53 [2020-12-23 07:29:33,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:29:33,533 INFO L225 Difference]: With dead ends: 137 [2020-12-23 07:29:33,533 INFO L226 Difference]: Without dead ends: 133 [2020-12-23 07:29:33,534 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=192, Invalid=678, Unknown=0, NotChecked=0, Total=870 [2020-12-23 07:29:33,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-12-23 07:29:33,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 95. [2020-12-23 07:29:33,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-12-23 07:29:33,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 101 transitions. [2020-12-23 07:29:33,555 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 101 transitions. Word has length 53 [2020-12-23 07:29:33,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:29:33,555 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 101 transitions. [2020-12-23 07:29:33,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-23 07:29:33,555 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 101 transitions. [2020-12-23 07:29:33,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-12-23 07:29:33,556 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:29:33,557 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:29:33,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-12-23 07:29:33,771 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:29:33,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:29:33,772 INFO L82 PathProgramCache]: Analyzing trace with hash -413997928, now seen corresponding path program 5 times [2020-12-23 07:29:33,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:29:33,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312526452] [2020-12-23 07:29:33,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:29:33,790 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:29:33,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1838207231] [2020-12-23 07:29:33,791 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:29:33,845 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-12-23 07:29:33,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:29:33,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-23 07:29:33,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:29:33,988 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 37 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:29:33,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312526452] [2020-12-23 07:29:33,989 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:29:33,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838207231] [2020-12-23 07:29:33,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:29:33,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 07:29:33,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015130251] [2020-12-23 07:29:33,990 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 07:29:33,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:29:33,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 07:29:33,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:29:33,991 INFO L87 Difference]: Start difference. First operand 95 states and 101 transitions. Second operand 7 states. [2020-12-23 07:29:34,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:29:34,224 INFO L93 Difference]: Finished difference Result 186 states and 196 transitions. [2020-12-23 07:29:34,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 07:29:34,225 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 57 [2020-12-23 07:29:34,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:29:34,226 INFO L225 Difference]: With dead ends: 186 [2020-12-23 07:29:34,226 INFO L226 Difference]: Without dead ends: 137 [2020-12-23 07:29:34,227 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:29:34,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-12-23 07:29:34,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 125. [2020-12-23 07:29:34,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-12-23 07:29:34,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 134 transitions. [2020-12-23 07:29:34,255 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 134 transitions. Word has length 57 [2020-12-23 07:29:34,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:29:34,255 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 134 transitions. [2020-12-23 07:29:34,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 07:29:34,255 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 134 transitions. [2020-12-23 07:29:34,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-23 07:29:34,256 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:29:34,256 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:29:34,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-23 07:29:34,469 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:29:34,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:29:34,470 INFO L82 PathProgramCache]: Analyzing trace with hash -1860833829, now seen corresponding path program 6 times [2020-12-23 07:29:34,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:29:34,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838991474] [2020-12-23 07:29:34,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:29:34,494 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:29:34,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1868342232] [2020-12-23 07:29:34,495 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:29:34,578 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-12-23 07:29:34,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:29:34,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 30 conjunts are in the unsatisfiable core [2020-12-23 07:29:34,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:29:34,760 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 24 proven. 4 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2020-12-23 07:29:34,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838991474] [2020-12-23 07:29:34,760 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:29:34,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868342232] [2020-12-23 07:29:34,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:29:34,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 07:29:34,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625288224] [2020-12-23 07:29:34,761 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:29:34,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:29:34,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:29:34,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:29:34,762 INFO L87 Difference]: Start difference. First operand 125 states and 134 transitions. Second operand 8 states. [2020-12-23 07:29:39,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:29:39,040 INFO L93 Difference]: Finished difference Result 171 states and 185 transitions. [2020-12-23 07:29:39,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 07:29:39,041 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 62 [2020-12-23 07:29:39,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:29:39,042 INFO L225 Difference]: With dead ends: 171 [2020-12-23 07:29:39,042 INFO L226 Difference]: Without dead ends: 169 [2020-12-23 07:29:39,043 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-12-23 07:29:39,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-12-23 07:29:39,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 139. [2020-12-23 07:29:39,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-12-23 07:29:39,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 149 transitions. [2020-12-23 07:29:39,072 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 149 transitions. Word has length 62 [2020-12-23 07:29:39,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:29:39,072 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 149 transitions. [2020-12-23 07:29:39,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:29:39,072 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 149 transitions. [2020-12-23 07:29:39,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-23 07:29:39,073 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:29:39,073 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:29:39,286 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-23 07:29:39,287 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:29:39,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:29:39,287 INFO L82 PathProgramCache]: Analyzing trace with hash 300678153, now seen corresponding path program 7 times [2020-12-23 07:29:39,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:29:39,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783639083] [2020-12-23 07:29:39,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:29:39,299 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:29:39,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1935624328] [2020-12-23 07:29:39,300 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:29:39,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:29:39,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 64 conjunts are in the unsatisfiable core [2020-12-23 07:29:39,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:29:40,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783639083] [2020-12-23 07:29:40,284 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:29:40,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935624328] [2020-12-23 07:29:40,284 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: null [2020-12-23 07:29:40,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:29:40,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-12-23 07:29:40,285 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2020-12-23 07:29:40,285 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-23 07:29:40,503 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:29:40,524 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-12-23 07:29:40,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 07:29:40 BoogieIcfgContainer [2020-12-23 07:29:40,524 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 07:29:40,525 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 07:29:40,525 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 07:29:40,525 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 07:29:40,527 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:28:34" (3/4) ... [2020-12-23 07:29:40,531 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-23 07:29:40,531 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 07:29:40,532 INFO L168 Benchmark]: Toolchain (without parser) took 67076.93 ms. Allocated memory was 172.0 MB in the beginning and 257.9 MB in the end (delta: 86.0 MB). Free memory was 148.2 MB in the beginning and 99.0 MB in the end (delta: 49.2 MB). Peak memory consumption was 136.5 MB. Max. memory is 8.0 GB. [2020-12-23 07:29:40,533 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 172.0 MB. Free memory is still 143.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 07:29:40,534 INFO L168 Benchmark]: CACSL2BoogieTranslator took 326.80 ms. Allocated memory is still 172.0 MB. Free memory was 148.0 MB in the beginning and 138.0 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-23 07:29:40,536 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.71 ms. Allocated memory is still 172.0 MB. Free memory was 138.0 MB in the beginning and 136.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 07:29:40,541 INFO L168 Benchmark]: Boogie Preprocessor took 29.81 ms. Allocated memory is still 172.0 MB. Free memory was 136.3 MB in the beginning and 135.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 07:29:40,544 INFO L168 Benchmark]: RCFGBuilder took 598.48 ms. Allocated memory is still 172.0 MB. Free memory was 135.1 MB in the beginning and 154.9 MB in the end (delta: -19.7 MB). Peak memory consumption was 20.3 MB. Max. memory is 8.0 GB. [2020-12-23 07:29:40,544 INFO L168 Benchmark]: TraceAbstraction took 66064.32 ms. Allocated memory was 172.0 MB in the beginning and 257.9 MB in the end (delta: 86.0 MB). Free memory was 154.3 MB in the beginning and 99.5 MB in the end (delta: 54.8 MB). Peak memory consumption was 140.3 MB. Max. memory is 8.0 GB. [2020-12-23 07:29:40,545 INFO L168 Benchmark]: Witness Printer took 6.44 ms. Allocated memory is still 257.9 MB. Free memory was 99.5 MB in the beginning and 99.0 MB in the end (delta: 526.3 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 07:29:40,551 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 172.0 MB. Free memory is still 143.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 326.80 ms. Allocated memory is still 172.0 MB. Free memory was 148.0 MB in the beginning and 138.0 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 43.71 ms. Allocated memory is still 172.0 MB. Free memory was 138.0 MB in the beginning and 136.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 29.81 ms. Allocated memory is still 172.0 MB. Free memory was 136.3 MB in the beginning and 135.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 598.48 ms. Allocated memory is still 172.0 MB. Free memory was 135.1 MB in the beginning and 154.9 MB in the end (delta: -19.7 MB). Peak memory consumption was 20.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 66064.32 ms. Allocated memory was 172.0 MB in the beginning and 257.9 MB in the end (delta: 86.0 MB). Free memory was 154.3 MB in the beginning and 99.5 MB in the end (delta: 54.8 MB). Peak memory consumption was 140.3 MB. Max. memory is 8.0 GB. * Witness Printer took 6.44 ms. Allocated memory is still 257.9 MB. Free memory was 99.5 MB in the beginning and 99.0 MB in the end (delta: 526.3 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L23] int x, y; [L24] long long q, r, a, b; [L26] x = __VERIFIER_nondet_int() [L12] COND FALSE !(!cond) [L28] y = __VERIFIER_nondet_int() [L12] COND FALSE !(!cond) [L12] COND FALSE !(!cond) [L33] q = 0 [L34] r = x [L35] a = 0 [L36] b = 0 [L38] COND TRUE 1 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L42] COND FALSE !(!(r >= y)) [L44] a = 1 [L45] b = y [L47] COND TRUE 1 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L52] COND FALSE !(!(r >= 2 * b)) [L15] COND FALSE !(!(cond)) [L57] a = 2 * a [L58] b = 2 * b [L47] COND TRUE 1 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L52] COND FALSE !(!(r >= 2 * b)) [L15] COND FALSE !(!(cond)) [L57] a = 2 * a [L58] b = 2 * b [L47] COND TRUE 1 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L52] COND TRUE !(r >= 2 * b) [L60] r = r - b [L61] q = q + a [L38] COND TRUE 1 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L42] COND FALSE !(!(r >= y)) [L44] a = 1 [L45] b = y [L47] COND TRUE 1 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L52] COND FALSE !(!(r >= 2 * b)) [L15] COND FALSE !(!(cond)) [L57] a = 2 * a [L58] b = 2 * b [L47] COND TRUE 1 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L52] COND TRUE !(r >= 2 * b) [L60] r = r - b [L61] q = q + a [L38] COND TRUE 1 [L15] COND FALSE !(!(cond)) [L15] COND TRUE !(cond) [L17] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 43 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 65.9s, OverallIterations: 15, TraceHistogramMax: 5, AutomataDifference: 54.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 375 SDtfs, 1709 SDslu, 824 SDs, 0 SdLazy, 2044 SolverSat, 513 SolverUnsat, 7 SolverUnknown, 0 SolverNotchecked, 16.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 558 GetRequests, 363 SyntacticMatches, 3 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 607 ImplicationChecksByTransitivity, 40.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=139occurred in iteration=14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 14 MinimizatonAttempts, 328 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 5.4s InterpolantComputationTime, 478 NumberOfCodeBlocks, 404 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 464 ConstructedInterpolants, 0 QuantifiedInterpolants, 178597 SizeOfPredicates, 136 NumberOfNonLiveVariables, 1510 ConjunctsInSsa, 360 ConjunctsInUnsatCore, 14 InterpolantComputations, 4 PerfectInterpolantSequences, 184/321 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...