/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/egcd3-ll.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 17:12:37,720 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 17:12:37,724 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 17:12:37,775 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 17:12:37,776 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 17:12:37,780 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 17:12:37,783 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 17:12:37,788 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 17:12:37,792 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 17:12:37,798 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 17:12:37,801 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 17:12:37,803 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 17:12:37,803 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 17:12:37,806 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 17:12:37,818 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 17:12:37,820 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 17:12:37,821 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 17:12:37,824 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 17:12:37,831 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 17:12:37,838 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 17:12:37,839 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 17:12:37,841 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 17:12:37,842 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 17:12:37,845 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 17:12:37,853 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 17:12:37,870 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 17:12:37,871 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 17:12:37,872 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 17:12:37,873 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 17:12:37,915 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 17:12:37,915 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 17:12:37,919 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 17:12:37,919 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 17:12:37,919 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 17:12:37,919 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 17:12:37,919 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 17:12:37,920 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 17:12:37,920 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 17:12:37,920 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 17:12:37,921 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 17:12:37,922 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 17:12:37,922 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 17:12:37,922 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 17:12:37,922 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 17:12:37,922 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 17:12:37,923 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 17:12:37,923 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:12:37,923 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 17:12:37,923 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 17:12:37,923 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 17:12:37,923 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 17:12:37,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 17:12:37,924 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 17:12:37,924 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 17:12:37,924 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 17:12:38,318 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 17:12:38,345 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 17:12:38,349 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 17:12:38,350 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 17:12:38,351 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 17:12:38,352 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/egcd3-ll.c [2021-01-06 17:12:38,437 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/977658469/aafe5e1f28874988b8d15da05fad9e47/FLAGaa4d3cf88 [2021-01-06 17:12:38,964 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 17:12:38,964 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench/egcd3-ll.c [2021-01-06 17:12:38,979 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/977658469/aafe5e1f28874988b8d15da05fad9e47/FLAGaa4d3cf88 [2021-01-06 17:12:39,360 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/977658469/aafe5e1f28874988b8d15da05fad9e47 [2021-01-06 17:12:39,364 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 17:12:39,367 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 17:12:39,374 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 17:12:39,375 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 17:12:39,378 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 17:12:39,380 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:12:39" (1/1) ... [2021-01-06 17:12:39,382 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fe04eb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:12:39, skipping insertion in model container [2021-01-06 17:12:39,382 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:12:39" (1/1) ... [2021-01-06 17:12:39,391 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 17:12:39,415 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 17:12:39,623 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/egcd3-ll.c[490,503] 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[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~p~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[~s~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~v~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~v~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~k~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[~temp~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~temp~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~s~0,] [2021-01-06 17:12:39,653 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:12:39,662 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 17:12:39,676 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/egcd3-ll.c[490,503] 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[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~p~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[~s~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~v~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~v~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~k~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[~temp~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~temp~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~s~0,] [2021-01-06 17:12:39,688 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:12:39,704 INFO L208 MainTranslator]: Completed translation [2021-01-06 17:12:39,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:12:39 WrapperNode [2021-01-06 17:12:39,704 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 17:12:39,706 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 17:12:39,706 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 17:12:39,706 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 17:12:39,714 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:12:39" (1/1) ... [2021-01-06 17:12:39,722 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:12:39" (1/1) ... [2021-01-06 17:12:39,745 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 17:12:39,749 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 17:12:39,749 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 17:12:39,749 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 17:12:39,758 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:12:39" (1/1) ... [2021-01-06 17:12:39,758 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:12:39" (1/1) ... [2021-01-06 17:12:39,760 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:12:39" (1/1) ... [2021-01-06 17:12:39,761 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:12:39" (1/1) ... [2021-01-06 17:12:39,766 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:12:39" (1/1) ... [2021-01-06 17:12:39,771 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:12:39" (1/1) ... [2021-01-06 17:12:39,772 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:12:39" (1/1) ... [2021-01-06 17:12:39,775 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 17:12:39,776 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 17:12:39,776 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 17:12:39,776 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 17:12:39,777 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:12:39" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:12:39,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 17:12:39,869 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 17:12:39,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 17:12:39,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 17:12:40,247 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 17:12:40,247 INFO L299 CfgBuilder]: Removed 21 assume(true) statements. [2021-01-06 17:12:40,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:12:40 BoogieIcfgContainer [2021-01-06 17:12:40,249 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 17:12:40,251 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 17:12:40,251 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 17:12:40,255 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 17:12:40,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 05:12:39" (1/3) ... [2021-01-06 17:12:40,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@247b33d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:12:40, skipping insertion in model container [2021-01-06 17:12:40,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:12:39" (2/3) ... [2021-01-06 17:12:40,257 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@247b33d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:12:40, skipping insertion in model container [2021-01-06 17:12:40,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:12:40" (3/3) ... [2021-01-06 17:12:40,262 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd3-ll.c [2021-01-06 17:12:40,275 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 17:12:40,285 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2021-01-06 17:12:40,312 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-01-06 17:12:40,358 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 17:12:40,359 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 17:12:40,359 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 17:12:40,359 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 17:12:40,362 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 17:12:40,362 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 17:12:40,362 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 17:12:40,362 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 17:12:40,383 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2021-01-06 17:12:40,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 17:12:40,389 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:12:40,390 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:12:40,390 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:12:40,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:12:40,398 INFO L82 PathProgramCache]: Analyzing trace with hash -1236053721, now seen corresponding path program 1 times [2021-01-06 17:12:40,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:12:40,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756246742] [2021-01-06 17:12:40,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:12:40,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:12:40,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:12:40,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756246742] [2021-01-06 17:12:40,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:12:40,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 17:12:40,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207156525] [2021-01-06 17:12:40,638 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 17:12:40,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:12:40,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 17:12:40,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 17:12:40,660 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 2 states. [2021-01-06 17:12:40,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:12:40,691 INFO L93 Difference]: Finished difference Result 71 states and 100 transitions. [2021-01-06 17:12:40,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 17:12:40,692 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2021-01-06 17:12:40,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:12:40,705 INFO L225 Difference]: With dead ends: 71 [2021-01-06 17:12:40,705 INFO L226 Difference]: Without dead ends: 33 [2021-01-06 17:12:40,710 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 17:12:40,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-01-06 17:12:40,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-01-06 17:12:40,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2021-01-06 17:12:40,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2021-01-06 17:12:40,759 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 10 [2021-01-06 17:12:40,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:12:40,760 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2021-01-06 17:12:40,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 17:12:40,760 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2021-01-06 17:12:40,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-06 17:12:40,761 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:12:40,761 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:12:40,762 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 17:12:40,763 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:12:40,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:12:40,765 INFO L82 PathProgramCache]: Analyzing trace with hash -1503549271, now seen corresponding path program 1 times [2021-01-06 17:12:40,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:12:40,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542323484] [2021-01-06 17:12:40,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:12:40,818 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:12:40,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [239728036] [2021-01-06 17:12:40,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:12:40,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:12:40,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2021-01-06 17:12:40,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:12:41,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:12:41,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542323484] [2021-01-06 17:12:41,028 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:12:41,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239728036] [2021-01-06 17:12:41,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:12:41,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 17:12:41,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556308312] [2021-01-06 17:12:41,031 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:12:41,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:12:41,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:12:41,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:12:41,032 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 5 states. [2021-01-06 17:12:41,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:12:41,128 INFO L93 Difference]: Finished difference Result 60 states and 64 transitions. [2021-01-06 17:12:41,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 17:12:41,129 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2021-01-06 17:12:41,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:12:41,130 INFO L225 Difference]: With dead ends: 60 [2021-01-06 17:12:41,130 INFO L226 Difference]: Without dead ends: 56 [2021-01-06 17:12:41,131 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:12:41,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-01-06 17:12:41,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 35. [2021-01-06 17:12:41,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-01-06 17:12:41,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2021-01-06 17:12:41,141 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 11 [2021-01-06 17:12:41,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:12:41,141 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2021-01-06 17:12:41,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:12:41,142 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2021-01-06 17:12:41,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-06 17:12:41,142 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:12:41,143 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:12:41,357 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-01-06 17:12:41,358 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:12:41,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:12:41,360 INFO L82 PathProgramCache]: Analyzing trace with hash -1815125850, now seen corresponding path program 1 times [2021-01-06 17:12:41,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:12:41,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056693442] [2021-01-06 17:12:41,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:12:41,399 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:12:41,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1772570030] [2021-01-06 17:12:41,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:12:41,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:12:41,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 17 conjunts are in the unsatisfiable core [2021-01-06 17:12:41,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:12:41,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:12:41,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056693442] [2021-01-06 17:12:41,562 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:12:41,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772570030] [2021-01-06 17:12:41,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:12:41,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 17:12:41,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696888087] [2021-01-06 17:12:41,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:12:41,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:12:41,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:12:41,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:12:41,565 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 6 states. [2021-01-06 17:12:41,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:12:41,660 INFO L93 Difference]: Finished difference Result 56 states and 60 transitions. [2021-01-06 17:12:41,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 17:12:41,661 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2021-01-06 17:12:41,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:12:41,662 INFO L225 Difference]: With dead ends: 56 [2021-01-06 17:12:41,663 INFO L226 Difference]: Without dead ends: 54 [2021-01-06 17:12:41,663 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:12:41,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-01-06 17:12:41,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 47. [2021-01-06 17:12:41,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2021-01-06 17:12:41,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2021-01-06 17:12:41,675 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 13 [2021-01-06 17:12:41,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:12:41,676 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2021-01-06 17:12:41,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:12:41,676 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2021-01-06 17:12:41,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-01-06 17:12:41,677 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:12:41,677 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:12:41,891 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:12:41,892 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:12:41,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:12:41,893 INFO L82 PathProgramCache]: Analyzing trace with hash -579062807, now seen corresponding path program 1 times [2021-01-06 17:12:41,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:12:41,894 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472855866] [2021-01-06 17:12:41,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:12:41,910 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:12:41,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1712100887] [2021-01-06 17:12:41,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:12:41,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:12:41,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-06 17:12:41,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:12:42,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:12:42,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472855866] [2021-01-06 17:12:42,142 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:12:42,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712100887] [2021-01-06 17:12:42,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:12:42,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-06 17:12:42,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072599680] [2021-01-06 17:12:42,144 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:12:42,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:12:42,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:12:42,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:12:42,147 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand 8 states. [2021-01-06 17:12:42,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:12:42,369 INFO L93 Difference]: Finished difference Result 54 states and 58 transitions. [2021-01-06 17:12:42,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:12:42,370 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2021-01-06 17:12:42,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:12:42,371 INFO L225 Difference]: With dead ends: 54 [2021-01-06 17:12:42,371 INFO L226 Difference]: Without dead ends: 52 [2021-01-06 17:12:42,372 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-01-06 17:12:42,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-01-06 17:12:42,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 47. [2021-01-06 17:12:42,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2021-01-06 17:12:42,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2021-01-06 17:12:42,380 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 15 [2021-01-06 17:12:42,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:12:42,381 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2021-01-06 17:12:42,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:12:42,381 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2021-01-06 17:12:42,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-01-06 17:12:42,382 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:12:42,382 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:12:42,595 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:12:42,596 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:12:42,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:12:42,597 INFO L82 PathProgramCache]: Analyzing trace with hash -977126190, now seen corresponding path program 1 times [2021-01-06 17:12:42,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:12:42,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715510442] [2021-01-06 17:12:42,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:12:42,612 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:12:42,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [943140177] [2021-01-06 17:12:42,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:12:42,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:12:42,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 9 conjunts are in the unsatisfiable core [2021-01-06 17:12:42,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:12:42,727 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:12:42,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715510442] [2021-01-06 17:12:42,728 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:12:42,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943140177] [2021-01-06 17:12:42,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:12:42,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-06 17:12:42,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253032027] [2021-01-06 17:12:42,730 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:12:42,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:12:42,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:12:42,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:12:42,736 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand 7 states. [2021-01-06 17:12:42,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:12:42,896 INFO L93 Difference]: Finished difference Result 136 states and 153 transitions. [2021-01-06 17:12:42,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 17:12:42,897 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2021-01-06 17:12:42,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:12:42,899 INFO L225 Difference]: With dead ends: 136 [2021-01-06 17:12:42,899 INFO L226 Difference]: Without dead ends: 132 [2021-01-06 17:12:42,899 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-01-06 17:12:42,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-01-06 17:12:42,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 71. [2021-01-06 17:12:42,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2021-01-06 17:12:42,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 87 transitions. [2021-01-06 17:12:42,913 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 87 transitions. Word has length 16 [2021-01-06 17:12:42,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:12:42,913 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 87 transitions. [2021-01-06 17:12:42,913 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:12:42,913 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 87 transitions. [2021-01-06 17:12:42,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-01-06 17:12:42,914 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:12:42,914 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:12:43,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:12:43,129 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:12:43,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:12:43,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1866548172, now seen corresponding path program 1 times [2021-01-06 17:12:43,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:12:43,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568280891] [2021-01-06 17:12:43,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:12:43,150 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:12:43,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [479562730] [2021-01-06 17:12:43,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:12:43,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:12:43,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 21 conjunts are in the unsatisfiable core [2021-01-06 17:12:43,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:12:43,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:12:43,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568280891] [2021-01-06 17:12:43,293 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:12:43,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479562730] [2021-01-06 17:12:43,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:12:43,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-06 17:12:43,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638069158] [2021-01-06 17:12:43,304 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:12:43,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:12:43,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:12:43,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:12:43,307 INFO L87 Difference]: Start difference. First operand 71 states and 87 transitions. Second operand 8 states. [2021-01-06 17:12:43,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:12:43,532 INFO L93 Difference]: Finished difference Result 91 states and 106 transitions. [2021-01-06 17:12:43,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:12:43,532 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2021-01-06 17:12:43,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:12:43,534 INFO L225 Difference]: With dead ends: 91 [2021-01-06 17:12:43,534 INFO L226 Difference]: Without dead ends: 89 [2021-01-06 17:12:43,534 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-01-06 17:12:43,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-01-06 17:12:43,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 80. [2021-01-06 17:12:43,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2021-01-06 17:12:43,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 98 transitions. [2021-01-06 17:12:43,548 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 98 transitions. Word has length 17 [2021-01-06 17:12:43,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:12:43,548 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 98 transitions. [2021-01-06 17:12:43,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:12:43,549 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 98 transitions. [2021-01-06 17:12:43,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-01-06 17:12:43,549 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:12:43,549 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:12:43,763 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-01-06 17:12:43,764 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:12:43,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:12:43,765 INFO L82 PathProgramCache]: Analyzing trace with hash 1566281359, now seen corresponding path program 1 times [2021-01-06 17:12:43,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:12:43,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478816641] [2021-01-06 17:12:43,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:12:43,778 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:12:43,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [190635967] [2021-01-06 17:12:43,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:12:43,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:12:43,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 25 conjunts are in the unsatisfiable core [2021-01-06 17:12:43,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:12:43,911 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:12:43,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478816641] [2021-01-06 17:12:43,912 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:12:43,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190635967] [2021-01-06 17:12:43,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:12:43,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-06 17:12:43,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820221331] [2021-01-06 17:12:43,913 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:12:43,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:12:43,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:12:43,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:12:43,914 INFO L87 Difference]: Start difference. First operand 80 states and 98 transitions. Second operand 7 states. [2021-01-06 17:12:44,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:12:44,055 INFO L93 Difference]: Finished difference Result 131 states and 156 transitions. [2021-01-06 17:12:44,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 17:12:44,056 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2021-01-06 17:12:44,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:12:44,057 INFO L225 Difference]: With dead ends: 131 [2021-01-06 17:12:44,057 INFO L226 Difference]: Without dead ends: 129 [2021-01-06 17:12:44,058 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:12:44,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-01-06 17:12:44,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 112. [2021-01-06 17:12:44,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2021-01-06 17:12:44,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 142 transitions. [2021-01-06 17:12:44,076 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 142 transitions. Word has length 18 [2021-01-06 17:12:44,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:12:44,076 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 142 transitions. [2021-01-06 17:12:44,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:12:44,076 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 142 transitions. [2021-01-06 17:12:44,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-01-06 17:12:44,077 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:12:44,077 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:12:44,291 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:12:44,292 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:12:44,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:12:44,293 INFO L82 PathProgramCache]: Analyzing trace with hash -1543378865, now seen corresponding path program 1 times [2021-01-06 17:12:44,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:12:44,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811792959] [2021-01-06 17:12:44,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:12:44,315 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:12:44,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [696485878] [2021-01-06 17:12:44,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:12:44,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:12:44,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 15 conjunts are in the unsatisfiable core [2021-01-06 17:12:44,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:12:44,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:12:44,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811792959] [2021-01-06 17:12:44,435 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:12:44,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696485878] [2021-01-06 17:12:44,435 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:12:44,436 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 17:12:44,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721984784] [2021-01-06 17:12:44,440 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:12:44,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:12:44,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:12:44,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:12:44,441 INFO L87 Difference]: Start difference. First operand 112 states and 142 transitions. Second operand 5 states. [2021-01-06 17:12:44,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:12:44,558 INFO L93 Difference]: Finished difference Result 222 states and 283 transitions. [2021-01-06 17:12:44,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:12:44,559 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2021-01-06 17:12:44,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:12:44,562 INFO L225 Difference]: With dead ends: 222 [2021-01-06 17:12:44,564 INFO L226 Difference]: Without dead ends: 220 [2021-01-06 17:12:44,564 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:12:44,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-01-06 17:12:44,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 160. [2021-01-06 17:12:44,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2021-01-06 17:12:44,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 201 transitions. [2021-01-06 17:12:44,606 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 201 transitions. Word has length 19 [2021-01-06 17:12:44,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:12:44,607 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 201 transitions. [2021-01-06 17:12:44,607 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:12:44,607 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 201 transitions. [2021-01-06 17:12:44,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-01-06 17:12:44,608 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:12:44,608 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:12:44,821 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:12:44,822 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:12:44,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:12:44,823 INFO L82 PathProgramCache]: Analyzing trace with hash 1957989266, now seen corresponding path program 1 times [2021-01-06 17:12:44,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:12:44,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441781097] [2021-01-06 17:12:44,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:12:44,835 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:12:44,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1707493749] [2021-01-06 17:12:44,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:12:44,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:12:44,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 38 conjunts are in the unsatisfiable core [2021-01-06 17:12:44,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:12:45,073 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:12:45,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441781097] [2021-01-06 17:12:45,073 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:12:45,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707493749] [2021-01-06 17:12:45,074 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:12:45,074 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-01-06 17:12:45,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28564248] [2021-01-06 17:12:45,075 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-06 17:12:45,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:12:45,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-06 17:12:45,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:12:45,076 INFO L87 Difference]: Start difference. First operand 160 states and 201 transitions. Second operand 10 states. [2021-01-06 17:12:45,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:12:45,652 INFO L93 Difference]: Finished difference Result 175 states and 210 transitions. [2021-01-06 17:12:45,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-01-06 17:12:45,652 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2021-01-06 17:12:45,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:12:45,654 INFO L225 Difference]: With dead ends: 175 [2021-01-06 17:12:45,654 INFO L226 Difference]: Without dead ends: 173 [2021-01-06 17:12:45,654 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2021-01-06 17:12:45,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-01-06 17:12:45,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 160. [2021-01-06 17:12:45,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2021-01-06 17:12:45,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 199 transitions. [2021-01-06 17:12:45,690 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 199 transitions. Word has length 20 [2021-01-06 17:12:45,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:12:45,691 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 199 transitions. [2021-01-06 17:12:45,691 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-06 17:12:45,694 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 199 transitions. [2021-01-06 17:12:45,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-01-06 17:12:45,695 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:12:45,695 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:12:45,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-01-06 17:12:45,896 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:12:45,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:12:45,897 INFO L82 PathProgramCache]: Analyzing trace with hash 432166197, now seen corresponding path program 1 times [2021-01-06 17:12:45,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:12:45,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90985735] [2021-01-06 17:12:45,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:12:45,920 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:12:45,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1504450808] [2021-01-06 17:12:45,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:12:45,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:12:45,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 18 conjunts are in the unsatisfiable core [2021-01-06 17:12:45,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:12:46,059 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:12:46,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90985735] [2021-01-06 17:12:46,060 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:12:46,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504450808] [2021-01-06 17:12:46,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:12:46,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-01-06 17:12:46,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714448585] [2021-01-06 17:12:46,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 17:12:46,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:12:46,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 17:12:46,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:12:46,062 INFO L87 Difference]: Start difference. First operand 160 states and 199 transitions. Second operand 9 states. [2021-01-06 17:12:46,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:12:46,372 INFO L93 Difference]: Finished difference Result 273 states and 324 transitions. [2021-01-06 17:12:46,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 17:12:46,373 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2021-01-06 17:12:46,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:12:46,375 INFO L225 Difference]: With dead ends: 273 [2021-01-06 17:12:46,375 INFO L226 Difference]: Without dead ends: 271 [2021-01-06 17:12:46,376 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2021-01-06 17:12:46,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2021-01-06 17:12:46,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 194. [2021-01-06 17:12:46,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2021-01-06 17:12:46,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 241 transitions. [2021-01-06 17:12:46,403 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 241 transitions. Word has length 22 [2021-01-06 17:12:46,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:12:46,403 INFO L481 AbstractCegarLoop]: Abstraction has 194 states and 241 transitions. [2021-01-06 17:12:46,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 17:12:46,403 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 241 transitions. [2021-01-06 17:12:46,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-01-06 17:12:46,404 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:12:46,405 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:12:46,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:12:46,620 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:12:46,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:12:46,621 INFO L82 PathProgramCache]: Analyzing trace with hash 50113094, now seen corresponding path program 2 times [2021-01-06 17:12:46,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:12:46,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408966281] [2021-01-06 17:12:46,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:12:46,634 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:12:46,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [161719762] [2021-01-06 17:12:46,634 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 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:12:46,689 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:12:46,690 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:12:46,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 5 conjunts are in the unsatisfiable core [2021-01-06 17:12:46,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:12:46,738 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:12:46,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408966281] [2021-01-06 17:12:46,738 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:12:46,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161719762] [2021-01-06 17:12:46,739 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:12:46,739 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 17:12:46,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877122175] [2021-01-06 17:12:46,740 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:12:46,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:12:46,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:12:46,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:12:46,741 INFO L87 Difference]: Start difference. First operand 194 states and 241 transitions. Second operand 5 states. [2021-01-06 17:12:46,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:12:46,842 INFO L93 Difference]: Finished difference Result 287 states and 351 transitions. [2021-01-06 17:12:46,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:12:46,843 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2021-01-06 17:12:46,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:12:46,844 INFO L225 Difference]: With dead ends: 287 [2021-01-06 17:12:46,844 INFO L226 Difference]: Without dead ends: 205 [2021-01-06 17:12:46,845 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:12:46,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-01-06 17:12:46,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 151. [2021-01-06 17:12:46,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2021-01-06 17:12:46,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 179 transitions. [2021-01-06 17:12:46,863 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 179 transitions. Word has length 23 [2021-01-06 17:12:46,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:12:46,864 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 179 transitions. [2021-01-06 17:12:46,864 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:12:46,864 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 179 transitions. [2021-01-06 17:12:46,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-01-06 17:12:46,865 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:12:46,865 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:12:47,078 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:12:47,079 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:12:47,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:12:47,080 INFO L82 PathProgramCache]: Analyzing trace with hash -710666819, now seen corresponding path program 1 times [2021-01-06 17:12:47,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:12:47,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604574103] [2021-01-06 17:12:47,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:12:47,092 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:12:47,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [247317451] [2021-01-06 17:12:47,093 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:12:47,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:12:47,145 WARN L261 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 67 conjunts are in the unsatisfiable core [2021-01-06 17:12:47,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:12:47,601 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:12:47,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604574103] [2021-01-06 17:12:47,603 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:12:47,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247317451] [2021-01-06 17:12:47,604 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:12:47,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-01-06 17:12:47,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387817461] [2021-01-06 17:12:47,605 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-01-06 17:12:47,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:12:47,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-01-06 17:12:47,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-01-06 17:12:47,607 INFO L87 Difference]: Start difference. First operand 151 states and 179 transitions. Second operand 14 states. [2021-01-06 17:12:48,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:12:48,365 INFO L93 Difference]: Finished difference Result 278 states and 329 transitions. [2021-01-06 17:12:48,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-01-06 17:12:48,366 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 28 [2021-01-06 17:12:48,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:12:48,367 INFO L225 Difference]: With dead ends: 278 [2021-01-06 17:12:48,368 INFO L226 Difference]: Without dead ends: 194 [2021-01-06 17:12:48,369 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2021-01-06 17:12:48,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-01-06 17:12:48,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 160. [2021-01-06 17:12:48,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2021-01-06 17:12:48,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 189 transitions. [2021-01-06 17:12:48,392 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 189 transitions. Word has length 28 [2021-01-06 17:12:48,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:12:48,392 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 189 transitions. [2021-01-06 17:12:48,392 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-01-06 17:12:48,392 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 189 transitions. [2021-01-06 17:12:48,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-01-06 17:12:48,393 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:12:48,393 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:12:48,608 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-01-06 17:12:48,608 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:12:48,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:12:48,609 INFO L82 PathProgramCache]: Analyzing trace with hash -584499604, now seen corresponding path program 1 times [2021-01-06 17:12:48,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:12:48,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241519885] [2021-01-06 17:12:48,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:12:48,620 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:12:48,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1407799489] [2021-01-06 17:12:48,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:12:48,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:12:48,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 28 conjunts are in the unsatisfiable core [2021-01-06 17:12:48,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:12:48,795 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:12:48,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241519885] [2021-01-06 17:12:48,796 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:12:48,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407799489] [2021-01-06 17:12:48,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:12:48,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-01-06 17:12:48,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328585698] [2021-01-06 17:12:48,798 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 17:12:48,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:12:48,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 17:12:48,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:12:48,799 INFO L87 Difference]: Start difference. First operand 160 states and 189 transitions. Second operand 9 states. [2021-01-06 17:12:49,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:12:49,169 INFO L93 Difference]: Finished difference Result 207 states and 240 transitions. [2021-01-06 17:12:49,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-01-06 17:12:49,170 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2021-01-06 17:12:49,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:12:49,171 INFO L225 Difference]: With dead ends: 207 [2021-01-06 17:12:49,172 INFO L226 Difference]: Without dead ends: 205 [2021-01-06 17:12:49,172 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2021-01-06 17:12:49,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-01-06 17:12:49,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 177. [2021-01-06 17:12:49,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2021-01-06 17:12:49,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 208 transitions. [2021-01-06 17:12:49,195 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 208 transitions. Word has length 28 [2021-01-06 17:12:49,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:12:49,195 INFO L481 AbstractCegarLoop]: Abstraction has 177 states and 208 transitions. [2021-01-06 17:12:49,195 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 17:12:49,195 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 208 transitions. [2021-01-06 17:12:49,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-01-06 17:12:49,197 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:12:49,197 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:12:49,411 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-01-06 17:12:49,412 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:12:49,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:12:49,412 INFO L82 PathProgramCache]: Analyzing trace with hash 878393524, now seen corresponding path program 2 times [2021-01-06 17:12:49,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:12:49,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767618199] [2021-01-06 17:12:49,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:12:49,423 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:12:49,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [688554795] [2021-01-06 17:12:49,424 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:12:49,490 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:12:49,491 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:12:49,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 8 conjunts are in the unsatisfiable core [2021-01-06 17:12:49,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:12:49,614 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:12:49,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767618199] [2021-01-06 17:12:49,615 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:12:49,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688554795] [2021-01-06 17:12:49,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:12:49,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-06 17:12:49,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097359737] [2021-01-06 17:12:49,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:12:49,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:12:49,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:12:49,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:12:49,617 INFO L87 Difference]: Start difference. First operand 177 states and 208 transitions. Second operand 8 states. [2021-01-06 17:12:49,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:12:49,993 INFO L93 Difference]: Finished difference Result 398 states and 467 transitions. [2021-01-06 17:12:49,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-01-06 17:12:49,994 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2021-01-06 17:12:49,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:12:49,997 INFO L225 Difference]: With dead ends: 398 [2021-01-06 17:12:49,997 INFO L226 Difference]: Without dead ends: 394 [2021-01-06 17:12:49,998 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2021-01-06 17:12:49,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2021-01-06 17:12:50,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 217. [2021-01-06 17:12:50,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2021-01-06 17:12:50,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 261 transitions. [2021-01-06 17:12:50,029 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 261 transitions. Word has length 33 [2021-01-06 17:12:50,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:12:50,029 INFO L481 AbstractCegarLoop]: Abstraction has 217 states and 261 transitions. [2021-01-06 17:12:50,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:12:50,030 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 261 transitions. [2021-01-06 17:12:50,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-01-06 17:12:50,030 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:12:50,031 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:12:50,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-01-06 17:12:50,242 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:12:50,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:12:50,243 INFO L82 PathProgramCache]: Analyzing trace with hash 1004560739, now seen corresponding path program 1 times [2021-01-06 17:12:50,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:12:50,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066813455] [2021-01-06 17:12:50,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:12:50,254 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:12:50,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [981768888] [2021-01-06 17:12:50,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:12:50,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:12:50,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 27 conjunts are in the unsatisfiable core [2021-01-06 17:12:50,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:12:50,426 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:12:50,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066813455] [2021-01-06 17:12:50,426 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:12:50,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981768888] [2021-01-06 17:12:50,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:12:50,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-01-06 17:12:50,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750916670] [2021-01-06 17:12:50,427 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-06 17:12:50,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:12:50,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-06 17:12:50,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:12:50,428 INFO L87 Difference]: Start difference. First operand 217 states and 261 transitions. Second operand 10 states. [2021-01-06 17:12:50,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:12:50,979 INFO L93 Difference]: Finished difference Result 359 states and 424 transitions. [2021-01-06 17:12:50,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-01-06 17:12:50,979 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 33 [2021-01-06 17:12:50,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:12:50,982 INFO L225 Difference]: With dead ends: 359 [2021-01-06 17:12:50,982 INFO L226 Difference]: Without dead ends: 357 [2021-01-06 17:12:50,983 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=152, Invalid=400, Unknown=0, NotChecked=0, Total=552 [2021-01-06 17:12:50,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2021-01-06 17:12:51,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 257. [2021-01-06 17:12:51,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2021-01-06 17:12:51,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 309 transitions. [2021-01-06 17:12:51,020 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 309 transitions. Word has length 33 [2021-01-06 17:12:51,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:12:51,020 INFO L481 AbstractCegarLoop]: Abstraction has 257 states and 309 transitions. [2021-01-06 17:12:51,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-06 17:12:51,020 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 309 transitions. [2021-01-06 17:12:51,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-01-06 17:12:51,021 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:12:51,021 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:12:51,234 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:12:51,235 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:12:51,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:12:51,236 INFO L82 PathProgramCache]: Analyzing trace with hash -741882838, now seen corresponding path program 1 times [2021-01-06 17:12:51,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:12:51,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991819747] [2021-01-06 17:12:51,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:12:51,246 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:12:51,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [719222505] [2021-01-06 17:12:51,247 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 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:12:51,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:12:51,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 4 conjunts are in the unsatisfiable core [2021-01-06 17:12:51,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:12:51,358 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-06 17:12:51,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991819747] [2021-01-06 17:12:51,359 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:12:51,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719222505] [2021-01-06 17:12:51,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:12:51,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 17:12:51,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460142713] [2021-01-06 17:12:51,360 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:12:51,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:12:51,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:12:51,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:12:51,361 INFO L87 Difference]: Start difference. First operand 257 states and 309 transitions. Second operand 5 states. [2021-01-06 17:12:51,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:12:51,446 INFO L93 Difference]: Finished difference Result 450 states and 548 transitions. [2021-01-06 17:12:51,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:12:51,447 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2021-01-06 17:12:51,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:12:51,449 INFO L225 Difference]: With dead ends: 450 [2021-01-06 17:12:51,449 INFO L226 Difference]: Without dead ends: 283 [2021-01-06 17:12:51,450 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:12:51,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2021-01-06 17:12:51,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 257. [2021-01-06 17:12:51,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2021-01-06 17:12:51,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 308 transitions. [2021-01-06 17:12:51,488 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 308 transitions. Word has length 34 [2021-01-06 17:12:51,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:12:51,488 INFO L481 AbstractCegarLoop]: Abstraction has 257 states and 308 transitions. [2021-01-06 17:12:51,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:12:51,488 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 308 transitions. [2021-01-06 17:12:51,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-01-06 17:12:51,489 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:12:51,489 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:12:51,703 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-01-06 17:12:51,704 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:12:51,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:12:51,705 INFO L82 PathProgramCache]: Analyzing trace with hash -835022368, now seen corresponding path program 2 times [2021-01-06 17:12:51,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:12:51,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026286100] [2021-01-06 17:12:51,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:12:51,715 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:12:51,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1051266463] [2021-01-06 17:12:51,715 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 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:12:51,776 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-01-06 17:12:51,776 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:12:51,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 16 conjunts are in the unsatisfiable core [2021-01-06 17:12:51,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:12:51,837 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-06 17:12:51,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026286100] [2021-01-06 17:12:51,837 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:12:51,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051266463] [2021-01-06 17:12:51,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:12:51,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 17:12:51,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257237255] [2021-01-06 17:12:51,838 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:12:51,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:12:51,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:12:51,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:12:51,839 INFO L87 Difference]: Start difference. First operand 257 states and 308 transitions. Second operand 5 states. [2021-01-06 17:12:51,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:12:51,994 INFO L93 Difference]: Finished difference Result 297 states and 356 transitions. [2021-01-06 17:12:51,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 17:12:51,995 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2021-01-06 17:12:51,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:12:51,997 INFO L225 Difference]: With dead ends: 297 [2021-01-06 17:12:51,997 INFO L226 Difference]: Without dead ends: 295 [2021-01-06 17:12:51,997 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:12:51,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-01-06 17:12:52,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 284. [2021-01-06 17:12:52,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2021-01-06 17:12:52,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 341 transitions. [2021-01-06 17:12:52,040 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 341 transitions. Word has length 34 [2021-01-06 17:12:52,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:12:52,041 INFO L481 AbstractCegarLoop]: Abstraction has 284 states and 341 transitions. [2021-01-06 17:12:52,041 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:12:52,041 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 341 transitions. [2021-01-06 17:12:52,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-01-06 17:12:52,041 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:12:52,041 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:12:52,256 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-01-06 17:12:52,257 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:12:52,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:12:52,258 INFO L82 PathProgramCache]: Analyzing trace with hash -1985668623, now seen corresponding path program 1 times [2021-01-06 17:12:52,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:12:52,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526669941] [2021-01-06 17:12:52,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:12:52,270 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:12:52,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1131937750] [2021-01-06 17:12:52,271 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 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:12:52,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:12:52,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 32 conjunts are in the unsatisfiable core [2021-01-06 17:12:52,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:12:52,711 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:12:52,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526669941] [2021-01-06 17:12:52,712 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:12:52,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131937750] [2021-01-06 17:12:52,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:12:52,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-01-06 17:12:52,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033836089] [2021-01-06 17:12:52,713 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-01-06 17:12:52,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:12:52,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-01-06 17:12:52,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-01-06 17:12:52,714 INFO L87 Difference]: Start difference. First operand 284 states and 341 transitions. Second operand 15 states. [2021-01-06 17:12:55,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:12:55,364 INFO L93 Difference]: Finished difference Result 446 states and 515 transitions. [2021-01-06 17:12:55,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-01-06 17:12:55,364 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 35 [2021-01-06 17:12:55,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:12:55,367 INFO L225 Difference]: With dead ends: 446 [2021-01-06 17:12:55,367 INFO L226 Difference]: Without dead ends: 444 [2021-01-06 17:12:55,369 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 709 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=578, Invalid=2178, Unknown=0, NotChecked=0, Total=2756 [2021-01-06 17:12:55,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2021-01-06 17:12:55,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 378. [2021-01-06 17:12:55,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 378 states. [2021-01-06 17:12:55,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 466 transitions. [2021-01-06 17:12:55,428 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 466 transitions. Word has length 35 [2021-01-06 17:12:55,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:12:55,429 INFO L481 AbstractCegarLoop]: Abstraction has 378 states and 466 transitions. [2021-01-06 17:12:55,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-01-06 17:12:55,429 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 466 transitions. [2021-01-06 17:12:55,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-01-06 17:12:55,430 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:12:55,430 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:12:55,643 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-01-06 17:12:55,644 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:12:55,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:12:55,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1261910412, now seen corresponding path program 1 times [2021-01-06 17:12:55,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:12:55,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91035665] [2021-01-06 17:12:55,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:12:55,654 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:12:55,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [257920738] [2021-01-06 17:12:55,655 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 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:12:55,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:12:55,723 WARN L261 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 83 conjunts are in the unsatisfiable core [2021-01-06 17:12:55,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:12:56,479 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:12:56,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91035665] [2021-01-06 17:12:56,480 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:12:56,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257920738] [2021-01-06 17:12:56,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:12:56,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2021-01-06 17:12:56,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763525655] [2021-01-06 17:12:56,481 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-01-06 17:12:56,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:12:56,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-01-06 17:12:56,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2021-01-06 17:12:56,482 INFO L87 Difference]: Start difference. First operand 378 states and 466 transitions. Second operand 18 states. [2021-01-06 17:12:57,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:12:57,752 INFO L93 Difference]: Finished difference Result 457 states and 549 transitions. [2021-01-06 17:12:57,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-01-06 17:12:57,752 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 37 [2021-01-06 17:12:57,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:12:57,755 INFO L225 Difference]: With dead ends: 457 [2021-01-06 17:12:57,755 INFO L226 Difference]: Without dead ends: 455 [2021-01-06 17:12:57,756 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=136, Invalid=676, Unknown=0, NotChecked=0, Total=812 [2021-01-06 17:12:57,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2021-01-06 17:12:57,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 425. [2021-01-06 17:12:57,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2021-01-06 17:12:57,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 522 transitions. [2021-01-06 17:12:57,823 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 522 transitions. Word has length 37 [2021-01-06 17:12:57,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:12:57,823 INFO L481 AbstractCegarLoop]: Abstraction has 425 states and 522 transitions. [2021-01-06 17:12:57,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2021-01-06 17:12:57,823 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 522 transitions. [2021-01-06 17:12:57,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-01-06 17:12:57,824 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:12:57,824 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:12:58,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:12:58,038 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:12:58,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:12:58,038 INFO L82 PathProgramCache]: Analyzing trace with hash 1353666624, now seen corresponding path program 1 times [2021-01-06 17:12:58,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:12:58,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124848849] [2021-01-06 17:12:58,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:12:58,046 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:12:58,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1833309569] [2021-01-06 17:12:58,047 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 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:12:58,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:12:58,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 73 conjunts are in the unsatisfiable core [2021-01-06 17:12:58,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:12:58,548 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:12:58,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124848849] [2021-01-06 17:12:58,549 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:12:58,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833309569] [2021-01-06 17:12:58,549 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:12:58,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-01-06 17:12:58,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745593063] [2021-01-06 17:12:58,550 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-01-06 17:12:58,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:12:58,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-01-06 17:12:58,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-01-06 17:12:58,551 INFO L87 Difference]: Start difference. First operand 425 states and 522 transitions. Second operand 14 states. [2021-01-06 17:12:59,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:12:59,711 INFO L93 Difference]: Finished difference Result 531 states and 641 transitions. [2021-01-06 17:12:59,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-01-06 17:12:59,711 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 37 [2021-01-06 17:12:59,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:12:59,714 INFO L225 Difference]: With dead ends: 531 [2021-01-06 17:12:59,715 INFO L226 Difference]: Without dead ends: 523 [2021-01-06 17:12:59,715 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=139, Invalid=563, Unknown=0, NotChecked=0, Total=702 [2021-01-06 17:12:59,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2021-01-06 17:12:59,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 446. [2021-01-06 17:12:59,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 446 states. [2021-01-06 17:12:59,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 546 transitions. [2021-01-06 17:12:59,790 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 546 transitions. Word has length 37 [2021-01-06 17:12:59,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:12:59,790 INFO L481 AbstractCegarLoop]: Abstraction has 446 states and 546 transitions. [2021-01-06 17:12:59,790 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-01-06 17:12:59,790 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 546 transitions. [2021-01-06 17:12:59,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-01-06 17:12:59,791 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:12:59,791 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:13:00,004 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:13:00,005 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:13:00,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:13:00,006 INFO L82 PathProgramCache]: Analyzing trace with hash 1479833839, now seen corresponding path program 2 times [2021-01-06 17:13:00,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:13:00,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124148082] [2021-01-06 17:13:00,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:13:00,021 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:13:00,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1525079487] [2021-01-06 17:13:00,022 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 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:13:00,083 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:13:00,084 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:13:00,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 34 conjunts are in the unsatisfiable core [2021-01-06 17:13:00,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:13:00,327 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:13:00,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124148082] [2021-01-06 17:13:00,328 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:13:00,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525079487] [2021-01-06 17:13:00,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:13:00,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-01-06 17:13:00,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745125440] [2021-01-06 17:13:00,329 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-06 17:13:00,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:13:00,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-06 17:13:00,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-01-06 17:13:00,330 INFO L87 Difference]: Start difference. First operand 446 states and 546 transitions. Second operand 12 states. [2021-01-06 17:13:01,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:13:01,227 INFO L93 Difference]: Finished difference Result 499 states and 603 transitions. [2021-01-06 17:13:01,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-01-06 17:13:01,228 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 37 [2021-01-06 17:13:01,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:13:01,231 INFO L225 Difference]: With dead ends: 499 [2021-01-06 17:13:01,231 INFO L226 Difference]: Without dead ends: 497 [2021-01-06 17:13:01,232 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=157, Invalid=443, Unknown=0, NotChecked=0, Total=600 [2021-01-06 17:13:01,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2021-01-06 17:13:01,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 464. [2021-01-06 17:13:01,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 464 states. [2021-01-06 17:13:01,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 567 transitions. [2021-01-06 17:13:01,320 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 567 transitions. Word has length 37 [2021-01-06 17:13:01,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:13:01,320 INFO L481 AbstractCegarLoop]: Abstraction has 464 states and 567 transitions. [2021-01-06 17:13:01,320 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-01-06 17:13:01,321 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 567 transitions. [2021-01-06 17:13:01,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-01-06 17:13:01,321 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:13:01,322 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:13:01,536 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-01-06 17:13:01,537 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:13:01,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:13:01,538 INFO L82 PathProgramCache]: Analyzing trace with hash 62559017, now seen corresponding path program 2 times [2021-01-06 17:13:01,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:13:01,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118681669] [2021-01-06 17:13:01,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:13:01,548 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:13:01,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1085813182] [2021-01-06 17:13:01,548 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 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:13:01,624 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:13:01,624 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:13:01,626 WARN L261 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 88 conjunts are in the unsatisfiable core [2021-01-06 17:13:01,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:13:02,581 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:13:02,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118681669] [2021-01-06 17:13:02,581 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:13:02,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085813182] [2021-01-06 17:13:02,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:13:02,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2021-01-06 17:13:02,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29723516] [2021-01-06 17:13:02,582 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-01-06 17:13:02,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:13:02,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-01-06 17:13:02,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2021-01-06 17:13:02,583 INFO L87 Difference]: Start difference. First operand 464 states and 567 transitions. Second operand 19 states. [2021-01-06 17:13:04,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:13:04,493 INFO L93 Difference]: Finished difference Result 600 states and 718 transitions. [2021-01-06 17:13:04,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-01-06 17:13:04,497 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 42 [2021-01-06 17:13:04,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:13:04,500 INFO L225 Difference]: With dead ends: 600 [2021-01-06 17:13:04,500 INFO L226 Difference]: Without dead ends: 590 [2021-01-06 17:13:04,501 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=204, Invalid=1202, Unknown=0, NotChecked=0, Total=1406 [2021-01-06 17:13:04,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2021-01-06 17:13:04,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 485. [2021-01-06 17:13:04,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 485 states. [2021-01-06 17:13:04,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 591 transitions. [2021-01-06 17:13:04,581 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 591 transitions. Word has length 42 [2021-01-06 17:13:04,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:13:04,582 INFO L481 AbstractCegarLoop]: Abstraction has 485 states and 591 transitions. [2021-01-06 17:13:04,582 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2021-01-06 17:13:04,582 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 591 transitions. [2021-01-06 17:13:04,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-01-06 17:13:04,582 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:13:04,583 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:13:04,796 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-01-06 17:13:04,797 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:13:04,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:13:04,797 INFO L82 PathProgramCache]: Analyzing trace with hash 188726232, now seen corresponding path program 2 times [2021-01-06 17:13:04,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:13:04,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489675376] [2021-01-06 17:13:04,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:13:04,807 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:13:04,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [839504739] [2021-01-06 17:13:04,808 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 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:13:04,880 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:13:04,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:13:04,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 41 conjunts are in the unsatisfiable core [2021-01-06 17:13:04,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:13:05,308 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:13:05,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489675376] [2021-01-06 17:13:05,309 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:13:05,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839504739] [2021-01-06 17:13:05,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:13:05,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2021-01-06 17:13:05,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506663270] [2021-01-06 17:13:05,310 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-01-06 17:13:05,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:13:05,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-01-06 17:13:05,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2021-01-06 17:13:05,311 INFO L87 Difference]: Start difference. First operand 485 states and 591 transitions. Second operand 17 states. [2021-01-06 17:13:06,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:13:06,863 INFO L93 Difference]: Finished difference Result 639 states and 761 transitions. [2021-01-06 17:13:06,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-01-06 17:13:06,864 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 42 [2021-01-06 17:13:06,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:13:06,867 INFO L225 Difference]: With dead ends: 639 [2021-01-06 17:13:06,867 INFO L226 Difference]: Without dead ends: 637 [2021-01-06 17:13:06,869 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=313, Invalid=1169, Unknown=0, NotChecked=0, Total=1482 [2021-01-06 17:13:06,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2021-01-06 17:13:06,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 503. [2021-01-06 17:13:06,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 503 states. [2021-01-06 17:13:06,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 612 transitions. [2021-01-06 17:13:06,959 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 612 transitions. Word has length 42 [2021-01-06 17:13:06,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:13:06,960 INFO L481 AbstractCegarLoop]: Abstraction has 503 states and 612 transitions. [2021-01-06 17:13:06,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-01-06 17:13:06,960 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 612 transitions. [2021-01-06 17:13:06,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-01-06 17:13:06,961 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:13:06,961 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:13:07,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:13:07,176 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:13:07,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:13:07,176 INFO L82 PathProgramCache]: Analyzing trace with hash 1389632472, now seen corresponding path program 1 times [2021-01-06 17:13:07,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:13:07,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030561518] [2021-01-06 17:13:07,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:13:07,185 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:13:07,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2069625453] [2021-01-06 17:13:07,185 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 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:13:07,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:13:07,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 30 conjunts are in the unsatisfiable core [2021-01-06 17:13:07,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:13:07,450 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:13:07,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030561518] [2021-01-06 17:13:07,450 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:13:07,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069625453] [2021-01-06 17:13:07,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:13:07,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-01-06 17:13:07,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146413701] [2021-01-06 17:13:07,450 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-06 17:13:07,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:13:07,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-06 17:13:07,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-01-06 17:13:07,451 INFO L87 Difference]: Start difference. First operand 503 states and 612 transitions. Second operand 12 states. [2021-01-06 17:13:08,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:13:08,381 INFO L93 Difference]: Finished difference Result 719 states and 872 transitions. [2021-01-06 17:13:08,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-01-06 17:13:08,381 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 45 [2021-01-06 17:13:08,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:13:08,385 INFO L225 Difference]: With dead ends: 719 [2021-01-06 17:13:08,385 INFO L226 Difference]: Without dead ends: 717 [2021-01-06 17:13:08,386 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=287, Invalid=769, Unknown=0, NotChecked=0, Total=1056 [2021-01-06 17:13:08,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2021-01-06 17:13:08,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 599. [2021-01-06 17:13:08,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 599 states. [2021-01-06 17:13:08,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 726 transitions. [2021-01-06 17:13:08,495 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 726 transitions. Word has length 45 [2021-01-06 17:13:08,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:13:08,495 INFO L481 AbstractCegarLoop]: Abstraction has 599 states and 726 transitions. [2021-01-06 17:13:08,495 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-01-06 17:13:08,495 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 726 transitions. [2021-01-06 17:13:08,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-01-06 17:13:08,496 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:13:08,496 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:13:08,711 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-01-06 17:13:08,712 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:13:08,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:13:08,712 INFO L82 PathProgramCache]: Analyzing trace with hash -1220921059, now seen corresponding path program 3 times [2021-01-06 17:13:08,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:13:08,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519137078] [2021-01-06 17:13:08,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:13:08,720 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:13:08,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [950631719] [2021-01-06 17:13:08,721 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 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:13:08,775 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-01-06 17:13:08,775 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:13:08,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 61 conjunts are in the unsatisfiable core [2021-01-06 17:13:08,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:13:09,152 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-01-06 17:13:09,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519137078] [2021-01-06 17:13:09,153 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:13:09,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950631719] [2021-01-06 17:13:09,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:13:09,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-01-06 17:13:09,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756154318] [2021-01-06 17:13:09,154 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-01-06 17:13:09,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:13:09,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-01-06 17:13:09,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-01-06 17:13:09,154 INFO L87 Difference]: Start difference. First operand 599 states and 726 transitions. Second operand 13 states. [2021-01-06 17:13:13,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:13:13,952 INFO L93 Difference]: Finished difference Result 748 states and 894 transitions. [2021-01-06 17:13:13,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-01-06 17:13:13,953 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 46 [2021-01-06 17:13:13,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:13:13,956 INFO L225 Difference]: With dead ends: 748 [2021-01-06 17:13:13,956 INFO L226 Difference]: Without dead ends: 740 [2021-01-06 17:13:13,957 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2021-01-06 17:13:13,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2021-01-06 17:13:14,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 616. [2021-01-06 17:13:14,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 616 states. [2021-01-06 17:13:14,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 745 transitions. [2021-01-06 17:13:14,069 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 745 transitions. Word has length 46 [2021-01-06 17:13:14,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:13:14,070 INFO L481 AbstractCegarLoop]: Abstraction has 616 states and 745 transitions. [2021-01-06 17:13:14,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-01-06 17:13:14,070 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 745 transitions. [2021-01-06 17:13:14,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-01-06 17:13:14,071 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:13:14,071 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:13:14,286 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:13:14,287 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:13:14,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:13:14,288 INFO L82 PathProgramCache]: Analyzing trace with hash -1094753844, now seen corresponding path program 3 times [2021-01-06 17:13:14,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:13:14,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501845983] [2021-01-06 17:13:14,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:13:14,304 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:13:14,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1767022227] [2021-01-06 17:13:14,308 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 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:13:14,358 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-01-06 17:13:14,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:13:14,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 24 conjunts are in the unsatisfiable core [2021-01-06 17:13:14,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:13:16,547 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-01-06 17:13:16,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501845983] [2021-01-06 17:13:16,547 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:13:16,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767022227] [2021-01-06 17:13:16,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:13:16,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-06 17:13:16,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961316589] [2021-01-06 17:13:16,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:13:16,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:13:16,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:13:16,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=28, Unknown=1, NotChecked=0, Total=42 [2021-01-06 17:13:16,549 INFO L87 Difference]: Start difference. First operand 616 states and 745 transitions. Second operand 7 states. [2021-01-06 17:14:12,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:14:12,710 INFO L93 Difference]: Finished difference Result 622 states and 748 transitions. [2021-01-06 17:14:12,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 17:14:12,722 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 46 [2021-01-06 17:14:12,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:14:12,725 INFO L225 Difference]: With dead ends: 622 [2021-01-06 17:14:12,725 INFO L226 Difference]: Without dead ends: 620 [2021-01-06 17:14:12,725 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 16.3s TimeCoverageRelationStatistics Valid=34, Invalid=68, Unknown=8, NotChecked=0, Total=110 [2021-01-06 17:14:12,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2021-01-06 17:14:12,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 403. [2021-01-06 17:14:12,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2021-01-06 17:14:12,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 483 transitions. [2021-01-06 17:14:12,820 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 483 transitions. Word has length 46 [2021-01-06 17:14:12,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:14:12,820 INFO L481 AbstractCegarLoop]: Abstraction has 403 states and 483 transitions. [2021-01-06 17:14:12,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:14:12,820 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 483 transitions. [2021-01-06 17:14:12,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-01-06 17:14:12,821 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:14:12,821 INFO L422 BasicCegarLoop]: trace histogram [5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:14:13,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-01-06 17:14:13,022 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:14:13,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:14:13,023 INFO L82 PathProgramCache]: Analyzing trace with hash -1298920666, now seen corresponding path program 2 times [2021-01-06 17:14:13,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:14:13,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494516610] [2021-01-06 17:14:13,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:14:13,031 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:14:13,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2001593791] [2021-01-06 17:14:13,031 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 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:14:13,091 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:14:13,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:14:13,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 34 conjunts are in the unsatisfiable core [2021-01-06 17:14:13,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:14:13,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494516610] [2021-01-06 17:14:13,671 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:14:13,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001593791] [2021-01-06 17:14:13,672 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: null [2021-01-06 17:14:13,672 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:14:13,672 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-01-06 17:14:13,672 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2021-01-06 17:14:13,672 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-01-06 17:14:13,890 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-01-06 17:14:13,911 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-01-06 17:14:13,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 05:14:13 BoogieIcfgContainer [2021-01-06 17:14:13,912 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 17:14:13,912 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 17:14:13,912 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 17:14:13,913 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 17:14:13,913 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:12:40" (3/4) ... [2021-01-06 17:14:13,916 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-01-06 17:14:13,916 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 17:14:13,918 INFO L168 Benchmark]: Toolchain (without parser) took 94551.05 ms. Allocated memory was 155.2 MB in the beginning and 398.5 MB in the end (delta: 243.3 MB). Free memory was 129.8 MB in the beginning and 281.3 MB in the end (delta: -151.5 MB). Peak memory consumption was 92.6 MB. Max. memory is 8.0 GB. [2021-01-06 17:14:13,918 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 155.2 MB. Free memory is still 127.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 17:14:13,921 INFO L168 Benchmark]: CACSL2BoogieTranslator took 330.67 ms. Allocated memory is still 155.2 MB. Free memory was 129.6 MB in the beginning and 119.4 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-01-06 17:14:13,922 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.09 ms. Allocated memory is still 155.2 MB. Free memory was 119.4 MB in the beginning and 117.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:14:13,922 INFO L168 Benchmark]: Boogie Preprocessor took 26.65 ms. Allocated memory is still 155.2 MB. Free memory was 117.7 MB in the beginning and 116.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:14:13,922 INFO L168 Benchmark]: RCFGBuilder took 473.20 ms. Allocated memory is still 155.2 MB. Free memory was 116.5 MB in the beginning and 135.1 MB in the end (delta: -18.6 MB). Peak memory consumption was 19.2 MB. Max. memory is 8.0 GB. [2021-01-06 17:14:13,923 INFO L168 Benchmark]: TraceAbstraction took 93660.81 ms. Allocated memory was 155.2 MB in the beginning and 398.5 MB in the end (delta: 243.3 MB). Free memory was 135.1 MB in the beginning and 281.3 MB in the end (delta: -146.2 MB). Peak memory consumption was 98.6 MB. Max. memory is 8.0 GB. [2021-01-06 17:14:13,923 INFO L168 Benchmark]: Witness Printer took 4.13 ms. Allocated memory is still 398.5 MB. Free memory is still 281.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 17:14:13,925 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 155.2 MB. Free memory is still 127.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 330.67 ms. Allocated memory is still 155.2 MB. Free memory was 129.6 MB in the beginning and 119.4 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 39.09 ms. Allocated memory is still 155.2 MB. Free memory was 119.4 MB in the beginning and 117.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 26.65 ms. Allocated memory is still 155.2 MB. Free memory was 117.7 MB in the beginning and 116.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 473.20 ms. Allocated memory is still 155.2 MB. Free memory was 116.5 MB in the beginning and 135.1 MB in the end (delta: -18.6 MB). Peak memory consumption was 19.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 93660.81 ms. Allocated memory was 155.2 MB in the beginning and 398.5 MB in the end (delta: 243.3 MB). Free memory was 135.1 MB in the beginning and 281.3 MB in the end (delta: -146.2 MB). Peak memory consumption was 98.6 MB. Max. memory is 8.0 GB. * Witness Printer took 4.13 ms. Allocated memory is still 398.5 MB. Free memory is still 281.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 13]: 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: [L19] int x, y; [L20] long long a, b, p, q, r, s; [L21] x = __VERIFIER_nondet_int() [L22] y = __VERIFIER_nondet_int() [L8] COND FALSE !(!cond) [L8] COND FALSE !(!cond) [L26] a = x [L27] b = y [L28] p = 1 [L29] q = 0 [L30] r = 0 [L31] s = 1 [L33] COND TRUE 1 [L34] COND FALSE !(!(b != 0)) [L36] long long c, k; [L37] c = a [L38] k = 0 [L40] COND TRUE 1 [L41] COND FALSE !(!(c >= b)) [L43] long long d, v; [L44] d = 1 [L45] v = b [L47] COND TRUE 1 [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L53] COND TRUE !(c >= 2 * v) [L58] c = c - v [L59] k = k + d [L40] COND TRUE 1 [L41] COND TRUE !(c >= b) [L62] a = b [L63] b = c [L64] long long temp; [L65] temp = p [L66] p = q [L67] q = temp - q * k [L68] temp = r [L69] r = s [L70] s = temp - s * k [L33] COND TRUE 1 [L34] COND FALSE !(!(b != 0)) [L36] long long c, k; [L37] c = a [L38] k = 0 [L40] COND TRUE 1 [L41] COND FALSE !(!(c >= b)) [L43] long long d, v; [L44] d = 1 [L45] v = b [L47] COND TRUE 1 [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L53] COND TRUE !(c >= 2 * v) [L58] c = c - v [L59] k = k + d [L40] COND TRUE 1 [L41] COND TRUE !(c >= b) [L62] a = b [L63] b = c [L64] long long temp; [L65] temp = p [L66] p = q [L67] q = temp - q * k [L68] temp = r [L69] r = s [L70] s = temp - s * k [L33] COND TRUE 1 [L34] COND FALSE !(!(b != 0)) [L36] long long c, k; [L37] c = a [L38] k = 0 [L40] COND TRUE 1 [L41] COND FALSE !(!(c >= b)) [L43] long long d, v; [L44] d = 1 [L45] v = b [L47] COND TRUE 1 [L11] COND TRUE !(cond) [L13] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 37 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 93.5s, OverallIterations: 27, TraceHistogramMax: 5, AutomataDifference: 75.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 913 SDtfs, 3802 SDslu, 3922 SDs, 0 SdLazy, 5854 SolverSat, 658 SolverUnsat, 22 SolverUnknown, 0 SolverNotchecked, 50.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 961 GetRequests, 527 SyntacticMatches, 3 SemanticMatches, 431 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2274 ImplicationChecksByTransitivity, 28.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=616occurred in iteration=25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 26 MinimizatonAttempts, 1604 StatesRemovedByMinimization, 25 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 7.9s InterpolantComputationTime, 741 NumberOfCodeBlocks, 688 NumberOfCodeBlocksAsserted, 34 NumberOfCheckSat, 715 ConstructedInterpolants, 0 QuantifiedInterpolants, 297152 SizeOfPredicates, 298 NumberOfNonLiveVariables, 3088 ConjunctsInSsa, 793 ConjunctsInUnsatCore, 26 InterpolantComputations, 9 PerfectInterpolantSequences, 125/340 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...