/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 17:32:35,931 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 17:32:35,934 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 17:32:35,986 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 17:32:35,987 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 17:32:35,991 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 17:32:35,995 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 17:32:36,012 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 17:32:36,016 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 17:32:36,022 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 17:32:36,026 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 17:32:36,028 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 17:32:36,028 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 17:32:36,031 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 17:32:36,033 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 17:32:36,035 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 17:32:36,037 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 17:32:36,041 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 17:32:36,044 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 17:32:36,051 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 17:32:36,053 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 17:32:36,055 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 17:32:36,057 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 17:32:36,059 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 17:32:36,070 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 17:32:36,085 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 17:32:36,089 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 17:32:36,090 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 17:32:36,091 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 17:32:36,146 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 17:32:36,146 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 17:32:36,149 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 17:32:36,150 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 17:32:36,150 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 17:32:36,150 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 17:32:36,150 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 17:32:36,151 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 17:32:36,151 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 17:32:36,151 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 17:32:36,152 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 17:32:36,153 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 17:32:36,153 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 17:32:36,153 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 17:32:36,153 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 17:32:36,153 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 17:32:36,154 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 17:32:36,154 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:32:36,154 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 17:32:36,154 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 17:32:36,154 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 17:32:36,155 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 17:32:36,155 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 17:32:36,155 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 17:32:36,155 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 17:32:36,155 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 17:32:36,573 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 17:32:36,601 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 17:32:36,604 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 17:32:36,606 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 17:32:36,607 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 17:32:36,608 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound5.c [2021-01-06 17:32:36,695 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/06859669e/15723b420c2042278b91c043c37d8875/FLAG502dfedd0 [2021-01-06 17:32:37,383 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 17:32:37,383 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound5.c [2021-01-06 17:32:37,391 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/06859669e/15723b420c2042278b91c043c37d8875/FLAG502dfedd0 [2021-01-06 17:32:37,745 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/06859669e/15723b420c2042278b91c043c37d8875 [2021-01-06 17:32:37,748 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 17:32:37,751 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 17:32:37,753 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 17:32:37,753 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 17:32:37,760 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 17:32:37,761 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:32:37" (1/1) ... [2021-01-06 17:32:37,764 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bbdc1e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:32:37, skipping insertion in model container [2021-01-06 17:32:37,764 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:32:37" (1/1) ... [2021-01-06 17:32:37,775 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 17:32:37,800 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 17:32:37,977 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound5.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[~xy~0,] left hand side expression in assignment: lhs: VariableLHS[~yy~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[~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 17:32:38,005 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:32:38,014 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 17:32:38,029 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound5.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[~xy~0,] left hand side expression in assignment: lhs: VariableLHS[~yy~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[~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 17:32:38,042 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:32:38,063 INFO L208 MainTranslator]: Completed translation [2021-01-06 17:32:38,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:32:38 WrapperNode [2021-01-06 17:32:38,063 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 17:32:38,066 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 17:32:38,066 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 17:32:38,066 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 17:32:38,075 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:32:38" (1/1) ... [2021-01-06 17:32:38,083 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:32:38" (1/1) ... [2021-01-06 17:32:38,111 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 17:32:38,112 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 17:32:38,112 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 17:32:38,113 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 17:32:38,122 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:32:38" (1/1) ... [2021-01-06 17:32:38,123 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:32:38" (1/1) ... [2021-01-06 17:32:38,125 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:32:38" (1/1) ... [2021-01-06 17:32:38,125 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:32:38" (1/1) ... [2021-01-06 17:32:38,131 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:32:38" (1/1) ... [2021-01-06 17:32:38,137 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:32:38" (1/1) ... [2021-01-06 17:32:38,139 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:32:38" (1/1) ... [2021-01-06 17:32:38,142 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 17:32:38,143 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 17:32:38,143 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 17:32:38,143 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 17:32:38,144 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:32:38" (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 17:32:38,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 17:32:38,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 17:32:38,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 17:32:38,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 17:32:38,672 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 17:32:38,672 INFO L299 CfgBuilder]: Removed 26 assume(true) statements. [2021-01-06 17:32:38,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:32:38 BoogieIcfgContainer [2021-01-06 17:32:38,676 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 17:32:38,678 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 17:32:38,678 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 17:32:38,682 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 17:32:38,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 05:32:37" (1/3) ... [2021-01-06 17:32:38,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e770fd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:32:38, skipping insertion in model container [2021-01-06 17:32:38,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:32:38" (2/3) ... [2021-01-06 17:32:38,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e770fd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:32:38, skipping insertion in model container [2021-01-06 17:32:38,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:32:38" (3/3) ... [2021-01-06 17:32:38,687 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd2-ll_unwindbound5.c [2021-01-06 17:32:38,695 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 17:32:38,700 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2021-01-06 17:32:38,722 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-01-06 17:32:38,755 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 17:32:38,756 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 17:32:38,756 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 17:32:38,756 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 17:32:38,756 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 17:32:38,756 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 17:32:38,757 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 17:32:38,757 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 17:32:38,777 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2021-01-06 17:32:38,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-06 17:32:38,783 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:32:38,784 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:32:38,785 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:32:38,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:32:38,792 INFO L82 PathProgramCache]: Analyzing trace with hash -141782897, now seen corresponding path program 1 times [2021-01-06 17:32:38,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:32:38,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741054871] [2021-01-06 17:32:38,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:32:38,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:32:38,999 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 17:32:39,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741054871] [2021-01-06 17:32:39,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:32:39,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 17:32:39,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285177636] [2021-01-06 17:32:39,008 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 17:32:39,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:32:39,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 17:32:39,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 17:32:39,030 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2021-01-06 17:32:39,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:32:39,057 INFO L93 Difference]: Finished difference Result 83 states and 112 transitions. [2021-01-06 17:32:39,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 17:32:39,059 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2021-01-06 17:32:39,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:32:39,071 INFO L225 Difference]: With dead ends: 83 [2021-01-06 17:32:39,071 INFO L226 Difference]: Without dead ends: 39 [2021-01-06 17:32:39,075 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 17:32:39,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-01-06 17:32:39,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-01-06 17:32:39,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2021-01-06 17:32:39,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2021-01-06 17:32:39,118 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 13 [2021-01-06 17:32:39,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:32:39,119 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2021-01-06 17:32:39,122 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 17:32:39,122 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2021-01-06 17:32:39,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 17:32:39,123 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:32:39,123 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:32:39,124 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 17:32:39,124 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:32:39,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:32:39,125 INFO L82 PathProgramCache]: Analyzing trace with hash -1057770534, now seen corresponding path program 1 times [2021-01-06 17:32:39,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:32:39,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224358073] [2021-01-06 17:32:39,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:32:39,150 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:32:39,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2066453915] [2021-01-06 17:32:39,151 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 17:32:39,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:32:39,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2021-01-06 17:32:39,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:32:39,337 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 17:32:39,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224358073] [2021-01-06 17:32:39,338 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:32:39,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2066453915] [2021-01-06 17:32:39,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:32:39,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 17:32:39,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822333929] [2021-01-06 17:32:39,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 17:32:39,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:32:39,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 17:32:39,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 17:32:39,348 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 4 states. [2021-01-06 17:32:39,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:32:39,389 INFO L93 Difference]: Finished difference Result 49 states and 52 transitions. [2021-01-06 17:32:39,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 17:32:39,390 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2021-01-06 17:32:39,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:32:39,394 INFO L225 Difference]: With dead ends: 49 [2021-01-06 17:32:39,394 INFO L226 Difference]: Without dead ends: 41 [2021-01-06 17:32:39,395 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 17:32:39,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-01-06 17:32:39,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-01-06 17:32:39,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2021-01-06 17:32:39,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2021-01-06 17:32:39,415 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 14 [2021-01-06 17:32:39,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:32:39,416 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2021-01-06 17:32:39,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 17:32:39,417 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2021-01-06 17:32:39,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-01-06 17:32:39,419 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:32:39,420 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:32:39,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-01-06 17:32:39,635 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:32:39,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:32:39,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1568670238, now seen corresponding path program 1 times [2021-01-06 17:32:39,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:32:39,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865828023] [2021-01-06 17:32:39,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:32:39,674 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:32:39,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [118406097] [2021-01-06 17:32:39,675 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 17:32:39,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:32:39,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 7 conjunts are in the unsatisfiable core [2021-01-06 17:32:39,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:32:39,852 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 17:32:39,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865828023] [2021-01-06 17:32:39,853 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:32:39,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118406097] [2021-01-06 17:32:39,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:32:39,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 17:32:39,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226581668] [2021-01-06 17:32:39,855 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:32:39,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:32:39,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:32:39,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:32:39,860 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand 5 states. [2021-01-06 17:32:39,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:32:39,984 INFO L93 Difference]: Finished difference Result 69 states and 74 transitions. [2021-01-06 17:32:39,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:32:39,985 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2021-01-06 17:32:39,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:32:39,986 INFO L225 Difference]: With dead ends: 69 [2021-01-06 17:32:39,986 INFO L226 Difference]: Without dead ends: 61 [2021-01-06 17:32:39,987 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 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 17:32:39,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-01-06 17:32:39,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 42. [2021-01-06 17:32:39,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2021-01-06 17:32:39,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2021-01-06 17:32:39,995 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 15 [2021-01-06 17:32:39,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:32:39,996 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2021-01-06 17:32:39,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:32:39,996 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2021-01-06 17:32:39,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-01-06 17:32:39,997 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:32:39,997 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:32:40,211 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:32:40,212 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:32:40,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:32:40,214 INFO L82 PathProgramCache]: Analyzing trace with hash 1384108475, now seen corresponding path program 1 times [2021-01-06 17:32:40,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:32:40,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828911065] [2021-01-06 17:32:40,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:32:40,231 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:32:40,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [735458757] [2021-01-06 17:32:40,232 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 17:32:40,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:32:40,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 21 conjunts are in the unsatisfiable core [2021-01-06 17:32:40,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:32:40,418 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 17:32:40,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828911065] [2021-01-06 17:32:40,419 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:32:40,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735458757] [2021-01-06 17:32:40,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:32:40,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-06 17:32:40,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141529768] [2021-01-06 17:32:40,421 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:32:40,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:32:40,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:32:40,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:32:40,425 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand 8 states. [2021-01-06 17:32:40,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:32:40,730 INFO L93 Difference]: Finished difference Result 80 states and 87 transitions. [2021-01-06 17:32:40,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 17:32:40,731 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2021-01-06 17:32:40,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:32:40,733 INFO L225 Difference]: With dead ends: 80 [2021-01-06 17:32:40,733 INFO L226 Difference]: Without dead ends: 78 [2021-01-06 17:32:40,735 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-01-06 17:32:40,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-01-06 17:32:40,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 45. [2021-01-06 17:32:40,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2021-01-06 17:32:40,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2021-01-06 17:32:40,759 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 16 [2021-01-06 17:32:40,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:32:40,759 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2021-01-06 17:32:40,759 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:32:40,759 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2021-01-06 17:32:40,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-01-06 17:32:40,760 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:32:40,760 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:32:40,976 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:32:40,977 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:32:40,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:32:40,979 INFO L82 PathProgramCache]: Analyzing trace with hash -1311460386, now seen corresponding path program 1 times [2021-01-06 17:32:40,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:32:40,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299191238] [2021-01-06 17:32:40,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:32:40,995 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:32:40,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1802137775] [2021-01-06 17:32:40,995 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 17:32:41,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:32:41,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-06 17:32:41,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:32:41,183 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 17:32:41,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299191238] [2021-01-06 17:32:41,183 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:32:41,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802137775] [2021-01-06 17:32:41,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:32:41,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-06 17:32:41,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088877462] [2021-01-06 17:32:41,185 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:32:41,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:32:41,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:32:41,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:32:41,186 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 8 states. [2021-01-06 17:32:41,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:32:41,348 INFO L93 Difference]: Finished difference Result 64 states and 70 transitions. [2021-01-06 17:32:41,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 17:32:41,349 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2021-01-06 17:32:41,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:32:41,350 INFO L225 Difference]: With dead ends: 64 [2021-01-06 17:32:41,350 INFO L226 Difference]: Without dead ends: 62 [2021-01-06 17:32:41,351 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-01-06 17:32:41,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-01-06 17:32:41,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 55. [2021-01-06 17:32:41,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2021-01-06 17:32:41,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 64 transitions. [2021-01-06 17:32:41,359 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 64 transitions. Word has length 18 [2021-01-06 17:32:41,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:32:41,359 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 64 transitions. [2021-01-06 17:32:41,359 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:32:41,359 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 64 transitions. [2021-01-06 17:32:41,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-01-06 17:32:41,360 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:32:41,361 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:32:41,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:32:41,574 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:32:41,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:32:41,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1862118746, now seen corresponding path program 1 times [2021-01-06 17:32:41,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:32:41,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785571645] [2021-01-06 17:32:41,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:32:41,590 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:32:41,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1056126169] [2021-01-06 17:32:41,591 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 17:32:41,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:32:41,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 5 conjunts are in the unsatisfiable core [2021-01-06 17:32:41,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:32:41,687 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:32:41,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785571645] [2021-01-06 17:32:41,688 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:32:41,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056126169] [2021-01-06 17:32:41,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:32:41,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 17:32:41,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223018669] [2021-01-06 17:32:41,689 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:32:41,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:32:41,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:32:41,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:32:41,690 INFO L87 Difference]: Start difference. First operand 55 states and 64 transitions. Second operand 5 states. [2021-01-06 17:32:41,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:32:41,715 INFO L93 Difference]: Finished difference Result 85 states and 97 transitions. [2021-01-06 17:32:41,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 17:32:41,715 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2021-01-06 17:32:41,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:32:41,717 INFO L225 Difference]: With dead ends: 85 [2021-01-06 17:32:41,718 INFO L226 Difference]: Without dead ends: 55 [2021-01-06 17:32:41,718 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:32:41,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-01-06 17:32:41,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2021-01-06 17:32:41,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2021-01-06 17:32:41,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2021-01-06 17:32:41,725 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 20 [2021-01-06 17:32:41,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:32:41,726 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2021-01-06 17:32:41,726 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:32:41,726 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2021-01-06 17:32:41,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-01-06 17:32:41,727 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:32:41,727 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:32:41,940 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-01-06 17:32:41,941 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:32:41,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:32:41,942 INFO L82 PathProgramCache]: Analyzing trace with hash -1887855967, now seen corresponding path program 1 times [2021-01-06 17:32:41,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:32:41,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992878191] [2021-01-06 17:32:41,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:32:41,956 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:32:41,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1912916242] [2021-01-06 17:32:41,956 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 17:32:42,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:32:42,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-06 17:32:42,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:32:42,172 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 17:32:42,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992878191] [2021-01-06 17:32:42,173 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:32:42,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912916242] [2021-01-06 17:32:42,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:32:42,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-06 17:32:42,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803630776] [2021-01-06 17:32:42,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:32:42,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:32:42,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:32:42,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:32:42,175 INFO L87 Difference]: Start difference. First operand 55 states and 63 transitions. Second operand 8 states. [2021-01-06 17:32:42,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:32:42,335 INFO L93 Difference]: Finished difference Result 62 states and 67 transitions. [2021-01-06 17:32:42,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 17:32:42,336 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2021-01-06 17:32:42,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:32:42,336 INFO L225 Difference]: With dead ends: 62 [2021-01-06 17:32:42,337 INFO L226 Difference]: Without dead ends: 60 [2021-01-06 17:32:42,337 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-01-06 17:32:42,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-01-06 17:32:42,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 55. [2021-01-06 17:32:42,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2021-01-06 17:32:42,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 62 transitions. [2021-01-06 17:32:42,344 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 62 transitions. Word has length 20 [2021-01-06 17:32:42,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:32:42,344 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 62 transitions. [2021-01-06 17:32:42,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:32:42,345 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2021-01-06 17:32:42,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-01-06 17:32:42,345 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:32:42,346 INFO L422 BasicCegarLoop]: trace histogram [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 17:32:42,560 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:32:42,561 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:32:42,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:32:42,562 INFO L82 PathProgramCache]: Analyzing trace with hash -1753227772, now seen corresponding path program 1 times [2021-01-06 17:32:42,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:32:42,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088898619] [2021-01-06 17:32:42,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:32:42,575 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:32:42,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1040226250] [2021-01-06 17:32:42,576 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 17:32:42,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:32:42,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 31 conjunts are in the unsatisfiable core [2021-01-06 17:32:42,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:32:42,813 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 17:32:42,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088898619] [2021-01-06 17:32:42,814 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:32:42,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040226250] [2021-01-06 17:32:42,814 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:32:42,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-01-06 17:32:42,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629633384] [2021-01-06 17:32:42,819 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 17:32:42,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:32:42,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 17:32:42,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:32:42,820 INFO L87 Difference]: Start difference. First operand 55 states and 62 transitions. Second operand 9 states. [2021-01-06 17:32:45,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:32:45,074 INFO L93 Difference]: Finished difference Result 67 states and 75 transitions. [2021-01-06 17:32:45,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-06 17:32:45,074 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2021-01-06 17:32:45,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:32:45,075 INFO L225 Difference]: With dead ends: 67 [2021-01-06 17:32:45,075 INFO L226 Difference]: Without dead ends: 65 [2021-01-06 17:32:45,076 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-01-06 17:32:45,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-01-06 17:32:45,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 55. [2021-01-06 17:32:45,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2021-01-06 17:32:45,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 61 transitions. [2021-01-06 17:32:45,083 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 61 transitions. Word has length 22 [2021-01-06 17:32:45,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:32:45,083 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 61 transitions. [2021-01-06 17:32:45,085 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 17:32:45,085 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 61 transitions. [2021-01-06 17:32:45,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-01-06 17:32:45,086 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:32:45,086 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] [2021-01-06 17:32:45,287 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:32:45,288 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:32:45,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:32:45,289 INFO L82 PathProgramCache]: Analyzing trace with hash 29719088, now seen corresponding path program 1 times [2021-01-06 17:32:45,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:32:45,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643586114] [2021-01-06 17:32:45,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:32:45,301 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:32:45,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [196990407] [2021-01-06 17:32:45,302 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 17:32:45,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:32:45,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 19 conjunts are in the unsatisfiable core [2021-01-06 17:32:45,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:32:45,421 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:32:45,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643586114] [2021-01-06 17:32:45,434 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:32:45,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196990407] [2021-01-06 17:32:45,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:32:45,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-01-06 17:32:45,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071139496] [2021-01-06 17:32:45,440 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:32:45,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:32:45,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:32:45,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:32:45,441 INFO L87 Difference]: Start difference. First operand 55 states and 61 transitions. Second operand 6 states. [2021-01-06 17:32:45,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:32:45,596 INFO L93 Difference]: Finished difference Result 108 states and 123 transitions. [2021-01-06 17:32:45,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 17:32:45,596 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2021-01-06 17:32:45,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:32:45,597 INFO L225 Difference]: With dead ends: 108 [2021-01-06 17:32:45,598 INFO L226 Difference]: Without dead ends: 106 [2021-01-06 17:32:45,598 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:32:45,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-01-06 17:32:45,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 78. [2021-01-06 17:32:45,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2021-01-06 17:32:45,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 92 transitions. [2021-01-06 17:32:45,610 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 92 transitions. Word has length 26 [2021-01-06 17:32:45,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:32:45,610 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 92 transitions. [2021-01-06 17:32:45,610 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:32:45,611 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 92 transitions. [2021-01-06 17:32:45,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-01-06 17:32:45,612 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:32:45,612 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:32:45,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-01-06 17:32:45,828 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:32:45,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:32:45,829 INFO L82 PathProgramCache]: Analyzing trace with hash -1666886870, now seen corresponding path program 1 times [2021-01-06 17:32:45,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:32:45,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546050192] [2021-01-06 17:32:45,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:32:45,840 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:32:45,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1574672097] [2021-01-06 17:32:45,841 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 17:32:45,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:32:45,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 7 conjunts are in the unsatisfiable core [2021-01-06 17:32:45,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:32:45,956 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 17:32:45,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546050192] [2021-01-06 17:32:45,957 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:32:45,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574672097] [2021-01-06 17:32:45,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:32:45,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-01-06 17:32:45,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129665252] [2021-01-06 17:32:45,958 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:32:45,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:32:45,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:32:45,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:32:45,959 INFO L87 Difference]: Start difference. First operand 78 states and 92 transitions. Second operand 6 states. [2021-01-06 17:32:45,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:32:45,990 INFO L93 Difference]: Finished difference Result 89 states and 103 transitions. [2021-01-06 17:32:45,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 17:32:45,991 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2021-01-06 17:32:45,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:32:45,992 INFO L225 Difference]: With dead ends: 89 [2021-01-06 17:32:45,992 INFO L226 Difference]: Without dead ends: 81 [2021-01-06 17:32:45,992 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:32:45,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-01-06 17:32:46,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2021-01-06 17:32:46,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2021-01-06 17:32:46,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 95 transitions. [2021-01-06 17:32:46,003 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 95 transitions. Word has length 28 [2021-01-06 17:32:46,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:32:46,004 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 95 transitions. [2021-01-06 17:32:46,004 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:32:46,004 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 95 transitions. [2021-01-06 17:32:46,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-01-06 17:32:46,005 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:32:46,005 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, 1] [2021-01-06 17:32:46,218 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:32:46,219 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:32:46,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:32:46,220 INFO L82 PathProgramCache]: Analyzing trace with hash -134066994, now seen corresponding path program 1 times [2021-01-06 17:32:46,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:32:46,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694531212] [2021-01-06 17:32:46,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:32:46,232 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:32:46,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1730041317] [2021-01-06 17:32:46,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:32:46,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:32:46,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 9 conjunts are in the unsatisfiable core [2021-01-06 17:32:46,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:32:46,368 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:32:46,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694531212] [2021-01-06 17:32:46,369 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:32:46,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730041317] [2021-01-06 17:32:46,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:32:46,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-06 17:32:46,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678971082] [2021-01-06 17:32:46,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:32:46,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:32:46,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:32:46,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:32:46,371 INFO L87 Difference]: Start difference. First operand 81 states and 95 transitions. Second operand 7 states. [2021-01-06 17:32:46,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:32:46,593 INFO L93 Difference]: Finished difference Result 232 states and 266 transitions. [2021-01-06 17:32:46,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 17:32:46,594 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2021-01-06 17:32:46,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:32:46,595 INFO L225 Difference]: With dead ends: 232 [2021-01-06 17:32:46,595 INFO L226 Difference]: Without dead ends: 224 [2021-01-06 17:32:46,596 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-01-06 17:32:46,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-01-06 17:32:46,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 136. [2021-01-06 17:32:46,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2021-01-06 17:32:46,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 176 transitions. [2021-01-06 17:32:46,617 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 176 transitions. Word has length 29 [2021-01-06 17:32:46,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:32:46,618 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 176 transitions. [2021-01-06 17:32:46,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:32:46,618 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 176 transitions. [2021-01-06 17:32:46,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-01-06 17:32:46,619 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:32:46,619 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, 1, 1] [2021-01-06 17:32:46,834 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:32:46,834 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:32:46,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:32:46,836 INFO L82 PathProgramCache]: Analyzing trace with hash 966792015, now seen corresponding path program 1 times [2021-01-06 17:32:46,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:32:46,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782196549] [2021-01-06 17:32:46,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:32:46,846 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:32:46,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1393228074] [2021-01-06 17:32:46,847 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 17:32:46,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:32:46,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 7 conjunts are in the unsatisfiable core [2021-01-06 17:32:46,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:32:46,970 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:32:46,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782196549] [2021-01-06 17:32:46,970 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:32:46,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393228074] [2021-01-06 17:32:46,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:32:46,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-01-06 17:32:46,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557637194] [2021-01-06 17:32:46,971 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:32:46,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:32:46,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:32:46,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:32:46,972 INFO L87 Difference]: Start difference. First operand 136 states and 176 transitions. Second operand 6 states. [2021-01-06 17:32:47,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:32:47,009 INFO L93 Difference]: Finished difference Result 179 states and 228 transitions. [2021-01-06 17:32:47,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 17:32:47,009 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2021-01-06 17:32:47,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:32:47,010 INFO L225 Difference]: With dead ends: 179 [2021-01-06 17:32:47,011 INFO L226 Difference]: Without dead ends: 136 [2021-01-06 17:32:47,011 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:32:47,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-01-06 17:32:47,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2021-01-06 17:32:47,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2021-01-06 17:32:47,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 175 transitions. [2021-01-06 17:32:47,026 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 175 transitions. Word has length 30 [2021-01-06 17:32:47,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:32:47,027 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 175 transitions. [2021-01-06 17:32:47,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:32:47,027 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 175 transitions. [2021-01-06 17:32:47,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-01-06 17:32:47,028 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:32:47,028 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, 1, 1, 1, 1] [2021-01-06 17:32:47,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-01-06 17:32:47,243 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:32:47,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:32:47,244 INFO L82 PathProgramCache]: Analyzing trace with hash 302394158, now seen corresponding path program 1 times [2021-01-06 17:32:47,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:32:47,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646215839] [2021-01-06 17:32:47,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:32:47,255 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:32:47,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [952237026] [2021-01-06 17:32:47,255 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 17:32:47,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:32:47,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 30 conjunts are in the unsatisfiable core [2021-01-06 17:32:47,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:32:47,456 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 17:32:47,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646215839] [2021-01-06 17:32:47,457 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:32:47,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952237026] [2021-01-06 17:32:47,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:32:47,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-06 17:32:47,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911686525] [2021-01-06 17:32:47,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:32:47,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:32:47,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:32:47,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:32:47,461 INFO L87 Difference]: Start difference. First operand 136 states and 175 transitions. Second operand 8 states. [2021-01-06 17:32:47,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:32:47,616 INFO L93 Difference]: Finished difference Result 208 states and 267 transitions. [2021-01-06 17:32:47,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 17:32:47,616 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2021-01-06 17:32:47,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:32:47,618 INFO L225 Difference]: With dead ends: 208 [2021-01-06 17:32:47,618 INFO L226 Difference]: Without dead ends: 202 [2021-01-06 17:32:47,619 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:32:47,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-01-06 17:32:47,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 189. [2021-01-06 17:32:47,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2021-01-06 17:32:47,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 250 transitions. [2021-01-06 17:32:47,643 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 250 transitions. Word has length 32 [2021-01-06 17:32:47,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:32:47,644 INFO L481 AbstractCegarLoop]: Abstraction has 189 states and 250 transitions. [2021-01-06 17:32:47,644 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:32:47,644 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 250 transitions. [2021-01-06 17:32:47,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-01-06 17:32:47,646 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:32:47,646 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 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] [2021-01-06 17:32:47,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-01-06 17:32:47,861 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:32:47,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:32:47,862 INFO L82 PathProgramCache]: Analyzing trace with hash -2001825622, now seen corresponding path program 1 times [2021-01-06 17:32:47,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:32:47,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816170102] [2021-01-06 17:32:47,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:32:47,873 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:32:47,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [467458713] [2021-01-06 17:32:47,873 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 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 17:32:47,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:32:47,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 9 conjunts are in the unsatisfiable core [2021-01-06 17:32:47,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:32:48,002 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:32:48,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816170102] [2021-01-06 17:32:48,003 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:32:48,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467458713] [2021-01-06 17:32:48,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:32:48,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-01-06 17:32:48,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29841783] [2021-01-06 17:32:48,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:32:48,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:32:48,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:32:48,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:32:48,005 INFO L87 Difference]: Start difference. First operand 189 states and 250 transitions. Second operand 7 states. [2021-01-06 17:32:48,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:32:48,076 INFO L93 Difference]: Finished difference Result 327 states and 437 transitions. [2021-01-06 17:32:48,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 17:32:48,076 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2021-01-06 17:32:48,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:32:48,078 INFO L225 Difference]: With dead ends: 327 [2021-01-06 17:32:48,078 INFO L226 Difference]: Without dead ends: 200 [2021-01-06 17:32:48,079 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:32:48,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-01-06 17:32:48,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 198. [2021-01-06 17:32:48,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2021-01-06 17:32:48,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 259 transitions. [2021-01-06 17:32:48,099 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 259 transitions. Word has length 34 [2021-01-06 17:32:48,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:32:48,099 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 259 transitions. [2021-01-06 17:32:48,099 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:32:48,099 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 259 transitions. [2021-01-06 17:32:48,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-01-06 17:32:48,100 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:32:48,100 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:32:48,315 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-01-06 17:32:48,316 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:32:48,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:32:48,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1456833039, now seen corresponding path program 1 times [2021-01-06 17:32:48,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:32:48,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962115924] [2021-01-06 17:32:48,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:32:48,333 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:32:48,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1322326834] [2021-01-06 17:32:48,334 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 17:32:48,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:32:48,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 36 conjunts are in the unsatisfiable core [2021-01-06 17:32:48,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:32:48,559 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:32:48,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962115924] [2021-01-06 17:32:48,560 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:32:48,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322326834] [2021-01-06 17:32:48,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:32:48,561 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-01-06 17:32:48,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096271567] [2021-01-06 17:32:48,561 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-06 17:32:48,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:32:48,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-06 17:32:48,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:32:48,562 INFO L87 Difference]: Start difference. First operand 198 states and 259 transitions. Second operand 10 states. [2021-01-06 17:32:48,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:32:48,897 INFO L93 Difference]: Finished difference Result 208 states and 265 transitions. [2021-01-06 17:32:48,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-01-06 17:32:48,898 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2021-01-06 17:32:48,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:32:48,899 INFO L225 Difference]: With dead ends: 208 [2021-01-06 17:32:48,900 INFO L226 Difference]: Without dead ends: 206 [2021-01-06 17:32:48,900 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2021-01-06 17:32:48,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-01-06 17:32:48,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 198. [2021-01-06 17:32:48,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2021-01-06 17:32:48,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 257 transitions. [2021-01-06 17:32:48,920 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 257 transitions. Word has length 34 [2021-01-06 17:32:48,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:32:48,920 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 257 transitions. [2021-01-06 17:32:48,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-06 17:32:48,921 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 257 transitions. [2021-01-06 17:32:48,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-01-06 17:32:48,921 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:32:48,921 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:32:49,135 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:32:49,136 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:32:49,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:32:49,137 INFO L82 PathProgramCache]: Analyzing trace with hash 142945620, now seen corresponding path program 1 times [2021-01-06 17:32:49,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:32:49,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059201360] [2021-01-06 17:32:49,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:32:49,146 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:32:49,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [618285702] [2021-01-06 17:32:49,147 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 17:32:49,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:32:49,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 54 conjunts are in the unsatisfiable core [2021-01-06 17:32:49,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:32:49,568 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 17:32:49,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059201360] [2021-01-06 17:32:49,569 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:32:49,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618285702] [2021-01-06 17:32:49,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:32:49,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-01-06 17:32:49,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469182190] [2021-01-06 17:32:49,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-01-06 17:32:49,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:32:49,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-01-06 17:32:49,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-01-06 17:32:49,571 INFO L87 Difference]: Start difference. First operand 198 states and 257 transitions. Second operand 13 states. [2021-01-06 17:32:50,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:32:50,038 INFO L93 Difference]: Finished difference Result 225 states and 288 transitions. [2021-01-06 17:32:50,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-01-06 17:32:50,039 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 36 [2021-01-06 17:32:50,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:32:50,041 INFO L225 Difference]: With dead ends: 225 [2021-01-06 17:32:50,041 INFO L226 Difference]: Without dead ends: 223 [2021-01-06 17:32:50,041 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2021-01-06 17:32:50,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2021-01-06 17:32:50,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 198. [2021-01-06 17:32:50,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2021-01-06 17:32:50,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 255 transitions. [2021-01-06 17:32:50,062 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 255 transitions. Word has length 36 [2021-01-06 17:32:50,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:32:50,062 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 255 transitions. [2021-01-06 17:32:50,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-01-06 17:32:50,062 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 255 transitions. [2021-01-06 17:32:50,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-01-06 17:32:50,063 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:32:50,063 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:32:50,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-01-06 17:32:50,277 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:32:50,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:32:50,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1084150885, now seen corresponding path program 2 times [2021-01-06 17:32:50,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:32:50,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710499742] [2021-01-06 17:32:50,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:32:50,287 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:32:50,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1204277835] [2021-01-06 17:32:50,288 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 17:32:50,343 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:32:50,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:32:50,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 37 conjunts are in the unsatisfiable core [2021-01-06 17:32:50,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:32:50,532 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:32:50,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710499742] [2021-01-06 17:32:50,532 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:32:50,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204277835] [2021-01-06 17:32:50,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:32:50,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-01-06 17:32:50,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462242255] [2021-01-06 17:32:50,537 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-06 17:32:50,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:32:50,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-06 17:32:50,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-01-06 17:32:50,538 INFO L87 Difference]: Start difference. First operand 198 states and 255 transitions. Second operand 11 states. [2021-01-06 17:32:50,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:32:50,828 INFO L93 Difference]: Finished difference Result 212 states and 269 transitions. [2021-01-06 17:32:50,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-01-06 17:32:50,829 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 36 [2021-01-06 17:32:50,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:32:50,830 INFO L225 Difference]: With dead ends: 212 [2021-01-06 17:32:50,830 INFO L226 Difference]: Without dead ends: 210 [2021-01-06 17:32:50,831 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2021-01-06 17:32:50,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-01-06 17:32:50,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 199. [2021-01-06 17:32:50,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2021-01-06 17:32:50,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 256 transitions. [2021-01-06 17:32:50,863 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 256 transitions. Word has length 36 [2021-01-06 17:32:50,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:32:50,864 INFO L481 AbstractCegarLoop]: Abstraction has 199 states and 256 transitions. [2021-01-06 17:32:50,864 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-01-06 17:32:50,864 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 256 transitions. [2021-01-06 17:32:50,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-01-06 17:32:50,865 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:32:50,865 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, 1] [2021-01-06 17:32:51,078 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-01-06 17:32:51,079 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:32:51,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:32:51,079 INFO L82 PathProgramCache]: Analyzing trace with hash -1970211809, now seen corresponding path program 1 times [2021-01-06 17:32:51,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:32:51,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752422936] [2021-01-06 17:32:51,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:32:51,099 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:32:51,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [922241577] [2021-01-06 17:32:51,100 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 17:32:51,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:32:51,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 9 conjunts are in the unsatisfiable core [2021-01-06 17:32:51,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:32:51,242 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 17:32:51,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752422936] [2021-01-06 17:32:51,243 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:32:51,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922241577] [2021-01-06 17:32:51,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:32:51,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-01-06 17:32:51,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680048756] [2021-01-06 17:32:51,246 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:32:51,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:32:51,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:32:51,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:32:51,248 INFO L87 Difference]: Start difference. First operand 199 states and 256 transitions. Second operand 7 states. [2021-01-06 17:32:51,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:32:51,303 INFO L93 Difference]: Finished difference Result 206 states and 263 transitions. [2021-01-06 17:32:51,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 17:32:51,303 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2021-01-06 17:32:51,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:32:51,305 INFO L225 Difference]: With dead ends: 206 [2021-01-06 17:32:51,305 INFO L226 Difference]: Without dead ends: 202 [2021-01-06 17:32:51,306 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:32:51,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-01-06 17:32:51,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2021-01-06 17:32:51,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2021-01-06 17:32:51,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 259 transitions. [2021-01-06 17:32:51,327 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 259 transitions. Word has length 38 [2021-01-06 17:32:51,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:32:51,327 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 259 transitions. [2021-01-06 17:32:51,328 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:32:51,328 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 259 transitions. [2021-01-06 17:32:51,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-01-06 17:32:51,329 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:32:51,330 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:32:51,543 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-01-06 17:32:51,544 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:32:51,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:32:51,544 INFO L82 PathProgramCache]: Analyzing trace with hash -947205511, now seen corresponding path program 1 times [2021-01-06 17:32:51,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:32:51,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980368123] [2021-01-06 17:32:51,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:32:51,554 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:32:51,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [636121478] [2021-01-06 17:32:51,554 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 17:32:51,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:32:51,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 47 conjunts are in the unsatisfiable core [2021-01-06 17:32:51,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:32:51,836 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 17:32:51,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980368123] [2021-01-06 17:32:51,836 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:32:51,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636121478] [2021-01-06 17:32:51,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:32:51,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-01-06 17:32:51,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950066182] [2021-01-06 17:32:51,838 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-06 17:32:51,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:32:51,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-06 17:32:51,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-01-06 17:32:51,839 INFO L87 Difference]: Start difference. First operand 202 states and 259 transitions. Second operand 11 states. [2021-01-06 17:32:52,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:32:52,467 INFO L93 Difference]: Finished difference Result 239 states and 302 transitions. [2021-01-06 17:32:52,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-01-06 17:32:52,468 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 39 [2021-01-06 17:32:52,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:32:52,469 INFO L225 Difference]: With dead ends: 239 [2021-01-06 17:32:52,469 INFO L226 Difference]: Without dead ends: 233 [2021-01-06 17:32:52,470 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2021-01-06 17:32:52,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2021-01-06 17:32:52,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 226. [2021-01-06 17:32:52,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2021-01-06 17:32:52,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 291 transitions. [2021-01-06 17:32:52,491 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 291 transitions. Word has length 39 [2021-01-06 17:32:52,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:32:52,491 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 291 transitions. [2021-01-06 17:32:52,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-01-06 17:32:52,492 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 291 transitions. [2021-01-06 17:32:52,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-01-06 17:32:52,492 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:32:52,492 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:32:52,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:32:52,706 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:32:52,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:32:52,707 INFO L82 PathProgramCache]: Analyzing trace with hash 170255994, now seen corresponding path program 2 times [2021-01-06 17:32:52,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:32:52,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576028912] [2021-01-06 17:32:52,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:32:52,715 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:32:52,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1291109620] [2021-01-06 17:32:52,716 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:32:52,769 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:32:52,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:32:52,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 11 conjunts are in the unsatisfiable core [2021-01-06 17:32:52,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:32:52,848 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:32:52,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576028912] [2021-01-06 17:32:52,849 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:32:52,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291109620] [2021-01-06 17:32:52,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:32:52,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-06 17:32:52,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172132642] [2021-01-06 17:32:52,850 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:32:52,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:32:52,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:32:52,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:32:52,851 INFO L87 Difference]: Start difference. First operand 226 states and 291 transitions. Second operand 8 states. [2021-01-06 17:32:52,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:32:52,919 INFO L93 Difference]: Finished difference Result 250 states and 317 transitions. [2021-01-06 17:32:52,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 17:32:52,919 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 42 [2021-01-06 17:32:52,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:32:52,921 INFO L225 Difference]: With dead ends: 250 [2021-01-06 17:32:52,921 INFO L226 Difference]: Without dead ends: 240 [2021-01-06 17:32:52,922 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-01-06 17:32:52,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-01-06 17:32:52,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 239. [2021-01-06 17:32:52,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2021-01-06 17:32:52,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 305 transitions. [2021-01-06 17:32:52,946 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 305 transitions. Word has length 42 [2021-01-06 17:32:52,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:32:52,946 INFO L481 AbstractCegarLoop]: Abstraction has 239 states and 305 transitions. [2021-01-06 17:32:52,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:32:52,946 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 305 transitions. [2021-01-06 17:32:52,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-01-06 17:32:52,947 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:32:52,947 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, 1, 1] [2021-01-06 17:32:53,162 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:32:53,163 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:32:53,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:32:53,164 INFO L82 PathProgramCache]: Analyzing trace with hash 1229525663, now seen corresponding path program 1 times [2021-01-06 17:32:53,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:32:53,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700744741] [2021-01-06 17:32:53,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:32:53,172 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:32:53,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1200577980] [2021-01-06 17:32:53,172 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 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 17:32:53,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:32:53,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 11 conjunts are in the unsatisfiable core [2021-01-06 17:32:53,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:32:53,321 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:32:53,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700744741] [2021-01-06 17:32:53,322 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:32:53,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200577980] [2021-01-06 17:32:53,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:32:53,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-06 17:32:53,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432782752] [2021-01-06 17:32:53,323 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:32:53,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:32:53,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:32:53,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:32:53,324 INFO L87 Difference]: Start difference. First operand 239 states and 305 transitions. Second operand 8 states. [2021-01-06 17:32:53,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:32:53,394 INFO L93 Difference]: Finished difference Result 368 states and 482 transitions. [2021-01-06 17:32:53,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 17:32:53,395 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 44 [2021-01-06 17:32:53,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:32:53,397 INFO L225 Difference]: With dead ends: 368 [2021-01-06 17:32:53,397 INFO L226 Difference]: Without dead ends: 241 [2021-01-06 17:32:53,398 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-01-06 17:32:53,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2021-01-06 17:32:53,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2021-01-06 17:32:53,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2021-01-06 17:32:53,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 305 transitions. [2021-01-06 17:32:53,421 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 305 transitions. Word has length 44 [2021-01-06 17:32:53,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:32:53,421 INFO L481 AbstractCegarLoop]: Abstraction has 241 states and 305 transitions. [2021-01-06 17:32:53,422 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:32:53,422 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 305 transitions. [2021-01-06 17:32:53,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-01-06 17:32:53,422 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:32:53,422 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:32:53,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-01-06 17:32:53,636 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:32:53,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:32:53,637 INFO L82 PathProgramCache]: Analyzing trace with hash -613640578, now seen corresponding path program 2 times [2021-01-06 17:32:53,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:32:53,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534194835] [2021-01-06 17:32:53,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:32:53,645 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:32:53,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [640794382] [2021-01-06 17:32:53,646 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 17:32:53,705 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:32:53,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:32:53,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 13 conjunts are in the unsatisfiable core [2021-01-06 17:32:53,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:32:53,815 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:32:53,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534194835] [2021-01-06 17:32:53,816 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:32:53,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640794382] [2021-01-06 17:32:53,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:32:53,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-06 17:32:53,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380672185] [2021-01-06 17:32:53,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 17:32:53,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:32:53,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 17:32:53,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:32:53,817 INFO L87 Difference]: Start difference. First operand 241 states and 305 transitions. Second operand 9 states. [2021-01-06 17:32:53,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:32:53,878 INFO L93 Difference]: Finished difference Result 304 states and 383 transitions. [2021-01-06 17:32:53,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 17:32:53,885 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 46 [2021-01-06 17:32:53,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:32:53,886 INFO L225 Difference]: With dead ends: 304 [2021-01-06 17:32:53,887 INFO L226 Difference]: Without dead ends: 146 [2021-01-06 17:32:53,887 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:32:53,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-01-06 17:32:53,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 140. [2021-01-06 17:32:53,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2021-01-06 17:32:53,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 154 transitions. [2021-01-06 17:32:53,902 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 154 transitions. Word has length 46 [2021-01-06 17:32:53,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:32:53,903 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 154 transitions. [2021-01-06 17:32:53,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 17:32:53,903 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 154 transitions. [2021-01-06 17:32:53,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-01-06 17:32:53,903 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:32:53,904 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, 1] [2021-01-06 17:32:54,117 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-01-06 17:32:54,118 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:32:54,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:32:54,119 INFO L82 PathProgramCache]: Analyzing trace with hash -2041640631, now seen corresponding path program 1 times [2021-01-06 17:32:54,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:32:54,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366900921] [2021-01-06 17:32:54,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:32:54,128 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:32:54,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [326205214] [2021-01-06 17:32:54,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:32:54,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:32:54,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 59 conjunts are in the unsatisfiable core [2021-01-06 17:32:54,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:32:54,735 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:32:54,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366900921] [2021-01-06 17:32:54,736 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:32:54,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326205214] [2021-01-06 17:32:54,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:32:54,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-01-06 17:32:54,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859375671] [2021-01-06 17:32:54,737 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-01-06 17:32:54,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:32:54,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-01-06 17:32:54,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-01-06 17:32:54,737 INFO L87 Difference]: Start difference. First operand 140 states and 154 transitions. Second operand 13 states. [2021-01-06 17:32:59,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:32:59,732 INFO L93 Difference]: Finished difference Result 144 states and 158 transitions. [2021-01-06 17:32:59,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-01-06 17:32:59,732 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 46 [2021-01-06 17:32:59,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:32:59,734 INFO L225 Difference]: With dead ends: 144 [2021-01-06 17:32:59,734 INFO L226 Difference]: Without dead ends: 142 [2021-01-06 17:32:59,734 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2021-01-06 17:32:59,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-01-06 17:32:59,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 138. [2021-01-06 17:32:59,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2021-01-06 17:32:59,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 152 transitions. [2021-01-06 17:32:59,750 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 152 transitions. Word has length 46 [2021-01-06 17:32:59,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:32:59,750 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 152 transitions. [2021-01-06 17:32:59,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-01-06 17:32:59,751 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 152 transitions. [2021-01-06 17:32:59,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-01-06 17:32:59,751 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:32:59,751 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:32:59,965 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:32:59,966 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:32:59,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:32:59,967 INFO L82 PathProgramCache]: Analyzing trace with hash -1100435366, now seen corresponding path program 3 times [2021-01-06 17:32:59,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:32:59,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645536949] [2021-01-06 17:32:59,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:32:59,974 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:32:59,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1651034000] [2021-01-06 17:32:59,975 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:33:00,023 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-01-06 17:33:00,024 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:33:00,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 27 conjunts are in the unsatisfiable core [2021-01-06 17:33:00,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:33:00,117 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-01-06 17:33:00,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645536949] [2021-01-06 17:33:00,117 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:33:00,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651034000] [2021-01-06 17:33:00,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:33:00,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-01-06 17:33:00,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168849104] [2021-01-06 17:33:00,118 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:33:00,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:33:00,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:33:00,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:33:00,119 INFO L87 Difference]: Start difference. First operand 138 states and 152 transitions. Second operand 5 states. [2021-01-06 17:33:00,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:33:00,205 INFO L93 Difference]: Finished difference Result 138 states and 152 transitions. [2021-01-06 17:33:00,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 17:33:00,205 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 46 [2021-01-06 17:33:00,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:33:00,206 INFO L225 Difference]: With dead ends: 138 [2021-01-06 17:33:00,206 INFO L226 Difference]: Without dead ends: 136 [2021-01-06 17:33:00,207 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:33:00,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-01-06 17:33:00,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2021-01-06 17:33:00,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2021-01-06 17:33:00,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 150 transitions. [2021-01-06 17:33:00,228 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 150 transitions. Word has length 46 [2021-01-06 17:33:00,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:33:00,228 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 150 transitions. [2021-01-06 17:33:00,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:33:00,229 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 150 transitions. [2021-01-06 17:33:00,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-01-06 17:33:00,229 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:33:00,229 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 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 17:33:00,442 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-01-06 17:33:00,443 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:33:00,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:33:00,444 INFO L82 PathProgramCache]: Analyzing trace with hash -1842911238, now seen corresponding path program 2 times [2021-01-06 17:33:00,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:33:00,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576792214] [2021-01-06 17:33:00,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:33:00,453 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:33:00,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1269288489] [2021-01-06 17:33:00,454 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 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 17:33:00,516 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:33:00,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:33:00,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 5 conjunts are in the unsatisfiable core [2021-01-06 17:33:00,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:33:00,568 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-01-06 17:33:00,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576792214] [2021-01-06 17:33:00,568 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:33:00,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1269288489] [2021-01-06 17:33:00,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:33:00,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 17:33:00,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474018863] [2021-01-06 17:33:00,569 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:33:00,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:33:00,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:33:00,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:33:00,570 INFO L87 Difference]: Start difference. First operand 136 states and 150 transitions. Second operand 5 states. [2021-01-06 17:33:00,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:33:00,673 INFO L93 Difference]: Finished difference Result 180 states and 198 transitions. [2021-01-06 17:33:00,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:33:00,674 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 48 [2021-01-06 17:33:00,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:33:00,675 INFO L225 Difference]: With dead ends: 180 [2021-01-06 17:33:00,675 INFO L226 Difference]: Without dead ends: 157 [2021-01-06 17:33:00,675 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 45 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 17:33:00,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-01-06 17:33:00,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 127. [2021-01-06 17:33:00,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2021-01-06 17:33:00,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 138 transitions. [2021-01-06 17:33:00,693 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 138 transitions. Word has length 48 [2021-01-06 17:33:00,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:33:00,694 INFO L481 AbstractCegarLoop]: Abstraction has 127 states and 138 transitions. [2021-01-06 17:33:00,694 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:33:00,694 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 138 transitions. [2021-01-06 17:33:00,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-01-06 17:33:00,694 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:33:00,695 INFO L422 BasicCegarLoop]: trace histogram [3, 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 17:33:00,907 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:33:00,907 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:33:00,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:33:00,908 INFO L82 PathProgramCache]: Analyzing trace with hash -316772764, now seen corresponding path program 2 times [2021-01-06 17:33:00,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:33:00,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143227980] [2021-01-06 17:33:00,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:33:00,921 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:33:00,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [198234357] [2021-01-06 17:33:00,921 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 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 17:33:00,988 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:33:00,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:33:00,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 50 conjunts are in the unsatisfiable core [2021-01-06 17:33:00,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:33:01,309 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:33:01,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143227980] [2021-01-06 17:33:01,310 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:33:01,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198234357] [2021-01-06 17:33:01,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:33:01,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-01-06 17:33:01,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350613463] [2021-01-06 17:33:01,311 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-01-06 17:33:01,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:33:01,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-01-06 17:33:01,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-01-06 17:33:01,312 INFO L87 Difference]: Start difference. First operand 127 states and 138 transitions. Second operand 13 states. [2021-01-06 17:33:04,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:33:04,000 INFO L93 Difference]: Finished difference Result 135 states and 146 transitions. [2021-01-06 17:33:04,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-01-06 17:33:04,000 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 49 [2021-01-06 17:33:04,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:33:04,001 INFO L225 Difference]: With dead ends: 135 [2021-01-06 17:33:04,001 INFO L226 Difference]: Without dead ends: 131 [2021-01-06 17:33:04,002 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2021-01-06 17:33:04,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-01-06 17:33:04,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 128. [2021-01-06 17:33:04,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2021-01-06 17:33:04,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 139 transitions. [2021-01-06 17:33:04,018 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 139 transitions. Word has length 49 [2021-01-06 17:33:04,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:33:04,018 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 139 transitions. [2021-01-06 17:33:04,018 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-01-06 17:33:04,018 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 139 transitions. [2021-01-06 17:33:04,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-01-06 17:33:04,019 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:33:04,019 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:33:04,233 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-01-06 17:33:04,234 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:33:04,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:33:04,235 INFO L82 PathProgramCache]: Analyzing trace with hash -231890065, now seen corresponding path program 2 times [2021-01-06 17:33:04,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:33:04,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510570165] [2021-01-06 17:33:04,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:33:04,244 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:33:04,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1639976177] [2021-01-06 17:33:04,244 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 17:33:04,317 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:33:04,317 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2021-01-06 17:33:04,318 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-06 17:33:04,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-06 17:33:04,344 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-06 17:33:04,470 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-01-06 17:33:04,471 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-01-06 17:33:04,687 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-01-06 17:33:04,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 05:33:04 BoogieIcfgContainer [2021-01-06 17:33:04,800 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 17:33:04,801 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 17:33:04,801 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 17:33:04,801 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 17:33:04,801 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:32:38" (3/4) ... [2021-01-06 17:33:04,803 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-01-06 17:33:04,871 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/nla-digbench-scaling/egcd2-ll_unwindbound5.c-witness.graphml [2021-01-06 17:33:04,872 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 17:33:04,873 INFO L168 Benchmark]: Toolchain (without parser) took 27122.32 ms. Allocated memory was 155.2 MB in the beginning and 266.3 MB in the end (delta: 111.1 MB). Free memory was 130.1 MB in the beginning and 110.8 MB in the end (delta: 19.2 MB). Peak memory consumption was 131.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:33:04,874 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 155.2 MB. Free memory is still 126.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 17:33:04,874 INFO L168 Benchmark]: CACSL2BoogieTranslator took 311.73 ms. Allocated memory is still 155.2 MB. Free memory was 129.9 MB in the beginning and 119.5 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-01-06 17:33:04,875 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.71 ms. Allocated memory is still 155.2 MB. Free memory was 119.5 MB in the beginning and 117.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 17:33:04,875 INFO L168 Benchmark]: Boogie Preprocessor took 29.74 ms. Allocated memory is still 155.2 MB. Free memory was 117.7 MB in the beginning and 116.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:33:04,876 INFO L168 Benchmark]: RCFGBuilder took 533.23 ms. Allocated memory is still 155.2 MB. Free memory was 116.4 MB in the beginning and 134.2 MB in the end (delta: -17.8 MB). Peak memory consumption was 17.9 MB. Max. memory is 8.0 GB. [2021-01-06 17:33:04,876 INFO L168 Benchmark]: TraceAbstraction took 26122.23 ms. Allocated memory was 155.2 MB in the beginning and 266.3 MB in the end (delta: 111.1 MB). Free memory was 133.7 MB in the beginning and 116.1 MB in the end (delta: 17.7 MB). Peak memory consumption was 130.9 MB. Max. memory is 8.0 GB. [2021-01-06 17:33:04,876 INFO L168 Benchmark]: Witness Printer took 71.01 ms. Allocated memory is still 266.3 MB. Free memory was 115.5 MB in the beginning and 110.8 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-01-06 17:33:04,879 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 155.2 MB. Free memory is still 126.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 311.73 ms. Allocated memory is still 155.2 MB. Free memory was 129.9 MB in the beginning and 119.5 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 45.71 ms. Allocated memory is still 155.2 MB. Free memory was 119.5 MB in the beginning and 117.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 29.74 ms. Allocated memory is still 155.2 MB. Free memory was 117.7 MB in the beginning and 116.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 533.23 ms. Allocated memory is still 155.2 MB. Free memory was 116.4 MB in the beginning and 134.2 MB in the end (delta: -17.8 MB). Peak memory consumption was 17.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 26122.23 ms. Allocated memory was 155.2 MB in the beginning and 266.3 MB in the end (delta: 111.1 MB). Free memory was 133.7 MB in the beginning and 116.1 MB in the end (delta: 17.7 MB). Peak memory consumption was 130.9 MB. Max. memory is 8.0 GB. * Witness Printer took 71.01 ms. Allocated memory is still 266.3 MB. Free memory was 115.5 MB in the beginning and 110.8 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L18] int counter = 0; VAL [counter=0] [L20] int x, y; [L21] long long a, b, p, q, r, s, c, k, xy, yy; [L22] x = __VERIFIER_nondet_int() [L23] y = __VERIFIER_nondet_int() [L8] COND FALSE !(!cond) VAL [counter=0] [L8] COND FALSE !(!cond) VAL [counter=0] [L27] a = x [L28] b = y [L29] p = 1 [L30] q = 0 [L31] r = 0 [L32] s = 1 [L33] c = 0 [L34] k = 0 [L35] xy = (long long) x * y [L36] yy = (long long) y * y [L8] COND FALSE !(!cond) VAL [counter=0] [L8] COND FALSE !(!cond) VAL [counter=0] [L40] EXPR counter++ VAL [counter=1] [L40] COND TRUE counter++<5 [L41] COND FALSE !(!(b != 0)) [L43] c = a [L44] k = 0 VAL [counter=1] [L46] EXPR counter++ VAL [counter=2] [L46] COND TRUE counter++<5 [L11] COND FALSE !(!(cond)) VAL [counter=2] [L11] COND FALSE !(!(cond)) VAL [counter=2] [L11] COND FALSE !(!(cond)) VAL [counter=2] [L11] COND FALSE !(!(cond)) VAL [counter=2] [L51] COND TRUE !(c >= b) VAL [counter=2] [L57] a = b [L58] b = c [L60] long long temp; [L61] temp = p [L62] p = q [L63] q = temp - q * k [L64] temp = r [L65] r = s [L66] s = temp - s * k VAL [counter=2] [L40] EXPR counter++ VAL [counter=3] [L40] COND TRUE counter++<5 [L41] COND FALSE !(!(b != 0)) [L43] c = a [L44] k = 0 VAL [counter=3] [L46] EXPR counter++ VAL [counter=4] [L46] COND TRUE counter++<5 [L11] COND FALSE !(!(cond)) VAL [counter=4] [L11] COND FALSE !(!(cond)) VAL [counter=4] [L11] COND FALSE !(!(cond)) VAL [counter=4] [L11] COND FALSE !(!(cond)) VAL [counter=4] [L51] COND FALSE !(!(c >= b)) [L53] c = c - b [L54] k = k + 1 VAL [counter=4] [L46] EXPR counter++ VAL [counter=5] [L46] COND TRUE counter++<5 [L11] COND FALSE !(!(cond)) VAL [counter=5] [L11] COND FALSE !(!(cond)) VAL [counter=5] [L11] COND FALSE !(!(cond)) VAL [counter=5] [L11] COND FALSE !(!(cond)) VAL [counter=5] [L51] COND TRUE !(c >= b) VAL [counter=5] [L57] a = b [L58] b = c [L60] long long temp; [L61] temp = p [L62] p = q [L63] q = temp - q * k [L64] temp = r [L65] r = s [L66] s = temp - s * k VAL [counter=5] [L40] EXPR counter++ VAL [counter=6] [L40] COND FALSE !(counter++<5) [L11] COND TRUE !(cond) VAL [counter=6] [L13] reach_error() VAL [counter=6] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 43 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 25.9s, OverallIterations: 27, TraceHistogramMax: 4, AutomataDifference: 13.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 995 SDtfs, 1958 SDslu, 3009 SDs, 0 SdLazy, 2398 SolverSat, 285 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 10.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 877 GetRequests, 637 SyntacticMatches, 0 SemanticMatches, 240 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 374 ImplicationChecksByTransitivity, 3.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=241occurred in iteration=21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 26 MinimizatonAttempts, 300 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 873 NumberOfCodeBlocks, 853 NumberOfCodeBlocksAsserted, 34 NumberOfCheckSat, 795 ConstructedInterpolants, 0 QuantifiedInterpolants, 266941 SizeOfPredicates, 203 NumberOfNonLiveVariables, 3858 ConjunctsInSsa, 551 ConjunctsInUnsatCore, 26 InterpolantComputations, 9 PerfectInterpolantSequences, 112/300 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...