/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/egcd2-ll.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 17:12:23,980 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 17:12:23,983 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 17:12:24,039 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 17:12:24,040 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 17:12:24,046 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 17:12:24,051 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 17:12:24,057 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 17:12:24,061 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 17:12:24,069 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 17:12:24,075 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 17:12:24,076 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 17:12:24,077 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 17:12:24,080 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 17:12:24,083 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 17:12:24,085 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 17:12:24,087 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 17:12:24,091 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 17:12:24,100 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 17:12:24,105 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 17:12:24,110 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 17:12:24,112 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 17:12:24,114 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 17:12:24,117 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 17:12:24,123 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 17:12:24,155 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 17:12:24,156 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 17:12:24,157 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 17:12:24,158 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 17:12:24,206 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 17:12:24,207 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 17:12:24,213 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 17:12:24,213 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 17:12:24,213 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 17:12:24,214 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 17:12:24,214 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 17:12:24,214 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 17:12:24,214 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 17:12:24,214 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 17:12:24,216 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 17:12:24,216 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 17:12:24,216 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 17:12:24,216 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 17:12:24,217 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 17:12:24,217 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 17:12:24,217 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 17:12:24,217 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:12:24,218 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 17:12:24,218 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 17:12:24,218 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 17:12:24,218 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 17:12:24,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 17:12:24,219 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 17:12:24,219 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 17:12:24,219 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 17:12:24,641 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 17:12:24,676 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 17:12:24,679 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 17:12:24,681 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 17:12:24,682 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 17:12:24,683 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/egcd2-ll.c [2021-01-06 17:12:24,768 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/61d450f82/683d9bf57e9f43a9b7c7098f53228c1d/FLAGdd1f6d74a [2021-01-06 17:12:25,363 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 17:12:25,364 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench/egcd2-ll.c [2021-01-06 17:12:25,377 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/61d450f82/683d9bf57e9f43a9b7c7098f53228c1d/FLAGdd1f6d74a [2021-01-06 17:12:25,717 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/61d450f82/683d9bf57e9f43a9b7c7098f53228c1d [2021-01-06 17:12:25,721 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 17:12:25,724 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 17:12:25,725 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 17:12:25,725 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 17:12:25,729 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 17:12:25,730 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:12:25" (1/1) ... [2021-01-06 17:12:25,731 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63435f25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:12:25, skipping insertion in model container [2021-01-06 17:12:25,732 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:12:25" (1/1) ... [2021-01-06 17:12:25,740 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 17:12:25,758 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 17:12:25,903 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/egcd2-ll.c[490,503] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~s~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~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 17:12:25,933 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:12:25,945 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 17:12:25,962 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/egcd2-ll.c[490,503] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~s~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~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 17:12:25,977 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:12:26,004 INFO L208 MainTranslator]: Completed translation [2021-01-06 17:12:26,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:12:26 WrapperNode [2021-01-06 17:12:26,005 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 17:12:26,007 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 17:12:26,007 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 17:12:26,008 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 17:12:26,019 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:12:26" (1/1) ... [2021-01-06 17:12:26,029 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:12:26" (1/1) ... [2021-01-06 17:12:26,058 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 17:12:26,059 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 17:12:26,059 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 17:12:26,060 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 17:12:26,071 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:12:26" (1/1) ... [2021-01-06 17:12:26,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:12:26" (1/1) ... [2021-01-06 17:12:26,074 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:12:26" (1/1) ... [2021-01-06 17:12:26,074 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:12:26" (1/1) ... [2021-01-06 17:12:26,079 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:12:26" (1/1) ... [2021-01-06 17:12:26,085 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:12:26" (1/1) ... [2021-01-06 17:12:26,087 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:12:26" (1/1) ... [2021-01-06 17:12:26,090 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 17:12:26,091 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 17:12:26,092 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 17:12:26,092 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 17:12:26,093 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:12:26" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:12:26,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 17:12:26,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 17:12:26,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 17:12:26,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 17:12:26,737 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 17:12:26,737 INFO L299 CfgBuilder]: Removed 26 assume(true) statements. [2021-01-06 17:12:26,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:12:26 BoogieIcfgContainer [2021-01-06 17:12:26,740 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 17:12:26,742 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 17:12:26,743 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 17:12:26,747 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 17:12:26,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 05:12:25" (1/3) ... [2021-01-06 17:12:26,749 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c91a243 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:12:26, skipping insertion in model container [2021-01-06 17:12:26,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:12:26" (2/3) ... [2021-01-06 17:12:26,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c91a243 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:12:26, skipping insertion in model container [2021-01-06 17:12:26,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:12:26" (3/3) ... [2021-01-06 17:12:26,752 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd2-ll.c [2021-01-06 17:12:26,761 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 17:12:26,767 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2021-01-06 17:12:26,790 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-01-06 17:12:26,821 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 17:12:26,821 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 17:12:26,821 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 17:12:26,821 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 17:12:26,822 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 17:12:26,822 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 17:12:26,822 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 17:12:26,822 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 17:12:26,866 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2021-01-06 17:12:26,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-06 17:12:26,876 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:12:26,877 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:12:26,878 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 17:12:26,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:12:26,887 INFO L82 PathProgramCache]: Analyzing trace with hash -143929835, now seen corresponding path program 1 times [2021-01-06 17:12:26,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:12:26,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870854832] [2021-01-06 17:12:26,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:12:27,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:12:27,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:12:27,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870854832] [2021-01-06 17:12:27,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:12:27,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 17:12:27,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562285435] [2021-01-06 17:12:27,133 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 17:12:27,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:12:27,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 17:12:27,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 17:12:27,161 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2021-01-06 17:12:27,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:12:27,212 INFO L93 Difference]: Finished difference Result 79 states and 108 transitions. [2021-01-06 17:12:27,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 17:12:27,214 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2021-01-06 17:12:27,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:12:27,228 INFO L225 Difference]: With dead ends: 79 [2021-01-06 17:12:27,229 INFO L226 Difference]: Without dead ends: 37 [2021-01-06 17:12:27,233 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 17:12:27,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-01-06 17:12:27,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-01-06 17:12:27,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2021-01-06 17:12:27,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2021-01-06 17:12:27,285 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 13 [2021-01-06 17:12:27,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:12:27,285 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2021-01-06 17:12:27,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 17:12:27,286 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2021-01-06 17:12:27,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 17:12:27,287 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:12:27,288 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:12:27,289 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 17:12:27,290 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 17:12:27,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:12:27,293 INFO L82 PathProgramCache]: Analyzing trace with hash -1053959272, now seen corresponding path program 1 times [2021-01-06 17:12:27,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:12:27,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686918117] [2021-01-06 17:12:27,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:12:27,343 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:12:27,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [513457487] [2021-01-06 17:12:27,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:12:27,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:12:27,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 7 conjunts are in the unsatisfiable core [2021-01-06 17:12:27,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:12:27,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:12:27,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686918117] [2021-01-06 17:12:27,718 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:12:27,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513457487] [2021-01-06 17:12:27,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:12:27,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 17:12:27,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119373481] [2021-01-06 17:12:27,720 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:12:27,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:12:27,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:12:27,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:12:27,723 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand 5 states. [2021-01-06 17:12:27,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:12:27,903 INFO L93 Difference]: Finished difference Result 65 states and 67 transitions. [2021-01-06 17:12:27,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:12:27,904 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2021-01-06 17:12:27,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:12:27,906 INFO L225 Difference]: With dead ends: 65 [2021-01-06 17:12:27,906 INFO L226 Difference]: Without dead ends: 57 [2021-01-06 17:12:27,907 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:12:27,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-01-06 17:12:27,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 39. [2021-01-06 17:12:27,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2021-01-06 17:12:27,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2021-01-06 17:12:27,916 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 14 [2021-01-06 17:12:27,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:12:27,917 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2021-01-06 17:12:27,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:12:27,917 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2021-01-06 17:12:27,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 17:12:27,918 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:12:27,918 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:12:28,132 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-01-06 17:12:28,134 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 17:12:28,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:12:28,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1053955298, now seen corresponding path program 1 times [2021-01-06 17:12:28,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:12:28,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829848822] [2021-01-06 17:12:28,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:12:28,151 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:12:28,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1977364074] [2021-01-06 17:12:28,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:12:28,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:12:28,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 21 conjunts are in the unsatisfiable core [2021-01-06 17:12:28,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:12:28,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:12:28,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829848822] [2021-01-06 17:12:28,385 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:12:28,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977364074] [2021-01-06 17:12:28,386 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:12:28,386 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-06 17:12:28,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023523403] [2021-01-06 17:12:28,387 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:12:28,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:12:28,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:12:28,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:12:28,391 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand 8 states. [2021-01-06 17:12:28,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:12:28,903 INFO L93 Difference]: Finished difference Result 75 states and 78 transitions. [2021-01-06 17:12:28,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 17:12:28,904 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2021-01-06 17:12:28,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:12:28,906 INFO L225 Difference]: With dead ends: 75 [2021-01-06 17:12:28,906 INFO L226 Difference]: Without dead ends: 73 [2021-01-06 17:12:28,907 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-01-06 17:12:28,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-01-06 17:12:28,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 41. [2021-01-06 17:12:28,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2021-01-06 17:12:28,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2021-01-06 17:12:28,915 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 14 [2021-01-06 17:12:28,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:12:28,916 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2021-01-06 17:12:28,916 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:12:28,916 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2021-01-06 17:12:28,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-01-06 17:12:28,917 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:12:28,917 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:12:29,132 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:12:29,133 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 17:12:29,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:12:29,135 INFO L82 PathProgramCache]: Analyzing trace with hash 761397313, now seen corresponding path program 1 times [2021-01-06 17:12:29,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:12:29,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274820922] [2021-01-06 17:12:29,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:12:29,152 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:12:29,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [359226928] [2021-01-06 17:12:29,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:12:29,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:12:29,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-01-06 17:12:29,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:12:29,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:12:29,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274820922] [2021-01-06 17:12:29,392 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:12:29,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359226928] [2021-01-06 17:12:29,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:12:29,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 17:12:29,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059140431] [2021-01-06 17:12:29,393 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:12:29,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:12:29,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:12:29,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:12:29,394 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand 6 states. [2021-01-06 17:12:29,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:12:29,594 INFO L93 Difference]: Finished difference Result 59 states and 61 transitions. [2021-01-06 17:12:29,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 17:12:29,595 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2021-01-06 17:12:29,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:12:29,596 INFO L225 Difference]: With dead ends: 59 [2021-01-06 17:12:29,596 INFO L226 Difference]: Without dead ends: 57 [2021-01-06 17:12:29,597 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:12:29,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-01-06 17:12:29,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 50. [2021-01-06 17:12:29,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2021-01-06 17:12:29,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 55 transitions. [2021-01-06 17:12:29,607 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 55 transitions. Word has length 16 [2021-01-06 17:12:29,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:12:29,608 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 55 transitions. [2021-01-06 17:12:29,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:12:29,608 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 55 transitions. [2021-01-06 17:12:29,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-01-06 17:12:29,609 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:12:29,609 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 17:12:29,822 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:12:29,823 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 17:12:29,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:12:29,824 INFO L82 PathProgramCache]: Analyzing trace with hash 1558534660, now seen corresponding path program 1 times [2021-01-06 17:12:29,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:12:29,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327945135] [2021-01-06 17:12:29,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:12:29,841 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:12:29,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1868556005] [2021-01-06 17:12:29,841 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:12:29,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:12:29,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 17 conjunts are in the unsatisfiable core [2021-01-06 17:12:29,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:12:30,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:12:30,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327945135] [2021-01-06 17:12:30,007 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:12:30,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868556005] [2021-01-06 17:12:30,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:12:30,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 17:12:30,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597597657] [2021-01-06 17:12:30,008 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:12:30,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:12:30,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:12:30,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:12:30,010 INFO L87 Difference]: Start difference. First operand 50 states and 55 transitions. Second operand 6 states. [2021-01-06 17:12:30,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:12:30,138 INFO L93 Difference]: Finished difference Result 57 states and 59 transitions. [2021-01-06 17:12:30,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 17:12:30,138 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2021-01-06 17:12:30,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:12:30,139 INFO L225 Difference]: With dead ends: 57 [2021-01-06 17:12:30,139 INFO L226 Difference]: Without dead ends: 55 [2021-01-06 17:12:30,140 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:12:30,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-01-06 17:12:30,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 50. [2021-01-06 17:12:30,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2021-01-06 17:12:30,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2021-01-06 17:12:30,150 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 18 [2021-01-06 17:12:30,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:12:30,150 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2021-01-06 17:12:30,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:12:30,150 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2021-01-06 17:12:30,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-01-06 17:12:30,151 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:12:30,151 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 17:12:30,364 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:12:30,365 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 17:12:30,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:12:30,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1191620505, now seen corresponding path program 1 times [2021-01-06 17:12:30,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:12:30,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959433068] [2021-01-06 17:12:30,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:12:30,382 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:12:30,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [87441855] [2021-01-06 17:12:30,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:12:30,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:12:30,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 31 conjunts are in the unsatisfiable core [2021-01-06 17:12:30,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:12:30,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:12:30,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959433068] [2021-01-06 17:12:30,738 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:12:30,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87441855] [2021-01-06 17:12:30,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:12:30,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-01-06 17:12:30,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13237338] [2021-01-06 17:12:30,747 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 17:12:30,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:12:30,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 17:12:30,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:12:30,750 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 9 states. [2021-01-06 17:12:33,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:12:33,057 INFO L93 Difference]: Finished difference Result 59 states and 62 transitions. [2021-01-06 17:12:33,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-06 17:12:33,058 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2021-01-06 17:12:33,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:12:33,059 INFO L225 Difference]: With dead ends: 59 [2021-01-06 17:12:33,059 INFO L226 Difference]: Without dead ends: 57 [2021-01-06 17:12:33,060 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-01-06 17:12:33,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-01-06 17:12:33,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 50. [2021-01-06 17:12:33,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2021-01-06 17:12:33,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2021-01-06 17:12:33,078 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 20 [2021-01-06 17:12:33,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:12:33,079 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions. [2021-01-06 17:12:33,079 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 17:12:33,079 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions. [2021-01-06 17:12:33,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-01-06 17:12:33,079 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:12:33,080 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] [2021-01-06 17:12:33,280 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-01-06 17:12:33,281 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 17:12:33,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:12:33,282 INFO L82 PathProgramCache]: Analyzing trace with hash -1656795766, now seen corresponding path program 1 times [2021-01-06 17:12:33,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:12:33,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979600832] [2021-01-06 17:12:33,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:12:33,296 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:12:33,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1094755761] [2021-01-06 17:12:33,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:12:33,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:12:33,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 19 conjunts are in the unsatisfiable core [2021-01-06 17:12:33,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:12:33,446 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:12:33,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979600832] [2021-01-06 17:12:33,447 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:12:33,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094755761] [2021-01-06 17:12:33,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:12:33,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-01-06 17:12:33,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104728659] [2021-01-06 17:12:33,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:12:33,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:12:33,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:12:33,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:12:33,451 INFO L87 Difference]: Start difference. First operand 50 states and 53 transitions. Second operand 6 states. [2021-01-06 17:12:33,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:12:33,679 INFO L93 Difference]: Finished difference Result 100 states and 109 transitions. [2021-01-06 17:12:33,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 17:12:33,680 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2021-01-06 17:12:33,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:12:33,689 INFO L225 Difference]: With dead ends: 100 [2021-01-06 17:12:33,690 INFO L226 Difference]: Without dead ends: 98 [2021-01-06 17:12:33,691 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 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 17:12:33,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-01-06 17:12:33,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 70. [2021-01-06 17:12:33,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2021-01-06 17:12:33,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2021-01-06 17:12:33,723 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 23 [2021-01-06 17:12:33,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:12:33,723 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2021-01-06 17:12:33,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:12:33,723 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2021-01-06 17:12:33,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-01-06 17:12:33,724 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:12:33,724 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] [2021-01-06 17:12:33,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:12:33,938 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 17:12:33,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:12:33,939 INFO L82 PathProgramCache]: Analyzing trace with hash -140859955, now seen corresponding path program 1 times [2021-01-06 17:12:33,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:12:33,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111015667] [2021-01-06 17:12:33,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:12:33,954 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:12:33,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [320823009] [2021-01-06 17:12:33,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:12:34,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:12:34,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 9 conjunts are in the unsatisfiable core [2021-01-06 17:12:34,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:12:34,099 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:12:34,100 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111015667] [2021-01-06 17:12:34,100 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:12:34,100 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320823009] [2021-01-06 17:12:34,100 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:12:34,100 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-06 17:12:34,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76958043] [2021-01-06 17:12:34,101 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:12:34,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:12:34,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:12:34,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:12:34,102 INFO L87 Difference]: Start difference. First operand 70 states and 78 transitions. Second operand 7 states. [2021-01-06 17:12:34,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:12:34,325 INFO L93 Difference]: Finished difference Result 161 states and 173 transitions. [2021-01-06 17:12:34,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 17:12:34,326 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2021-01-06 17:12:34,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:12:34,328 INFO L225 Difference]: With dead ends: 161 [2021-01-06 17:12:34,328 INFO L226 Difference]: Without dead ends: 153 [2021-01-06 17:12:34,328 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-01-06 17:12:34,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-01-06 17:12:34,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 105. [2021-01-06 17:12:34,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2021-01-06 17:12:34,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 127 transitions. [2021-01-06 17:12:34,350 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 127 transitions. Word has length 26 [2021-01-06 17:12:34,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:12:34,350 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 127 transitions. [2021-01-06 17:12:34,351 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:12:34,351 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 127 transitions. [2021-01-06 17:12:34,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-01-06 17:12:34,352 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:12:34,352 INFO L422 BasicCegarLoop]: trace histogram [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 17:12:34,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:12:34,560 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 17:12:34,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:12:34,561 INFO L82 PathProgramCache]: Analyzing trace with hash 2076512566, now seen corresponding path program 1 times [2021-01-06 17:12:34,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:12:34,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369122262] [2021-01-06 17:12:34,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:12:34,578 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:12:34,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [190951759] [2021-01-06 17:12:34,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:12:34,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:12:34,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 28 conjunts are in the unsatisfiable core [2021-01-06 17:12:34,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:12:34,837 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:12:34,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369122262] [2021-01-06 17:12:34,838 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:12:34,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190951759] [2021-01-06 17:12:34,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:12:34,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-01-06 17:12:34,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592110089] [2021-01-06 17:12:34,839 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 17:12:34,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:12:34,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 17:12:34,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:12:34,840 INFO L87 Difference]: Start difference. First operand 105 states and 127 transitions. Second operand 9 states. [2021-01-06 17:12:35,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:12:35,102 INFO L93 Difference]: Finished difference Result 172 states and 207 transitions. [2021-01-06 17:12:35,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 17:12:35,103 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2021-01-06 17:12:35,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:12:35,106 INFO L225 Difference]: With dead ends: 172 [2021-01-06 17:12:35,106 INFO L226 Difference]: Without dead ends: 166 [2021-01-06 17:12:35,107 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-01-06 17:12:35,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-01-06 17:12:35,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 153. [2021-01-06 17:12:35,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2021-01-06 17:12:35,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 190 transitions. [2021-01-06 17:12:35,145 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 190 transitions. Word has length 28 [2021-01-06 17:12:35,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:12:35,145 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 190 transitions. [2021-01-06 17:12:35,146 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 17:12:35,146 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 190 transitions. [2021-01-06 17:12:35,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-01-06 17:12:35,147 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:12:35,147 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] [2021-01-06 17:12:35,363 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-01-06 17:12:35,364 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 17:12:35,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:12:35,365 INFO L82 PathProgramCache]: Analyzing trace with hash -1631059527, now seen corresponding path program 1 times [2021-01-06 17:12:35,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:12:35,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684301529] [2021-01-06 17:12:35,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:12:35,378 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:12:35,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1196401992] [2021-01-06 17:12:35,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:12:35,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:12:35,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 44 conjunts are in the unsatisfiable core [2021-01-06 17:12:35,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:12:35,670 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:12:35,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684301529] [2021-01-06 17:12:35,671 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:12:35,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196401992] [2021-01-06 17:12:35,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:12:35,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-01-06 17:12:35,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241027370] [2021-01-06 17:12:35,672 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-06 17:12:35,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:12:35,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-06 17:12:35,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:12:35,673 INFO L87 Difference]: Start difference. First operand 153 states and 190 transitions. Second operand 10 states. [2021-01-06 17:12:36,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:12:36,009 INFO L93 Difference]: Finished difference Result 163 states and 196 transitions. [2021-01-06 17:12:36,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 17:12:36,010 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 30 [2021-01-06 17:12:36,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:12:36,011 INFO L225 Difference]: With dead ends: 163 [2021-01-06 17:12:36,011 INFO L226 Difference]: Without dead ends: 161 [2021-01-06 17:12:36,012 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2021-01-06 17:12:36,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-01-06 17:12:36,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 153. [2021-01-06 17:12:36,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2021-01-06 17:12:36,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 188 transitions. [2021-01-06 17:12:36,035 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 188 transitions. Word has length 30 [2021-01-06 17:12:36,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:12:36,035 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 188 transitions. [2021-01-06 17:12:36,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-06 17:12:36,035 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 188 transitions. [2021-01-06 17:12:36,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-01-06 17:12:36,036 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:12:36,037 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] [2021-01-06 17:12:36,252 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:12:36,253 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 17:12:36,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:12:36,254 INFO L82 PathProgramCache]: Analyzing trace with hash 215015132, now seen corresponding path program 1 times [2021-01-06 17:12:36,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:12:36,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90840589] [2021-01-06 17:12:36,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:12:36,266 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:12:36,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1243001961] [2021-01-06 17:12:36,267 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 17:12:36,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:12:36,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 46 conjunts are in the unsatisfiable core [2021-01-06 17:12:36,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:12:36,552 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 17:12:36,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90840589] [2021-01-06 17:12:36,552 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:12:36,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243001961] [2021-01-06 17:12:36,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:12:36,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-01-06 17:12:36,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215213980] [2021-01-06 17:12:36,553 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 17:12:36,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:12:36,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 17:12:36,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:12:36,554 INFO L87 Difference]: Start difference. First operand 153 states and 188 transitions. Second operand 9 states. [2021-01-06 17:12:36,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:12:36,875 INFO L93 Difference]: Finished difference Result 168 states and 201 transitions. [2021-01-06 17:12:36,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-01-06 17:12:36,875 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2021-01-06 17:12:36,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:12:36,877 INFO L225 Difference]: With dead ends: 168 [2021-01-06 17:12:36,877 INFO L226 Difference]: Without dead ends: 166 [2021-01-06 17:12:36,877 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-01-06 17:12:36,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-01-06 17:12:36,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 153. [2021-01-06 17:12:36,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2021-01-06 17:12:36,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 186 transitions. [2021-01-06 17:12:36,899 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 186 transitions. Word has length 32 [2021-01-06 17:12:36,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:12:36,899 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 186 transitions. [2021-01-06 17:12:36,899 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 17:12:36,899 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 186 transitions. [2021-01-06 17:12:36,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-01-06 17:12:36,900 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:12:36,900 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:12:37,114 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:12:37,115 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 17:12:37,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:12:37,116 INFO L82 PathProgramCache]: Analyzing trace with hash -258480994, now seen corresponding path program 2 times [2021-01-06 17:12:37,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:12:37,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381492962] [2021-01-06 17:12:37,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:12:37,137 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:12:37,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [518717048] [2021-01-06 17:12:37,140 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:12:37,215 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:12:37,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:12:37,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 38 conjunts are in the unsatisfiable core [2021-01-06 17:12:37,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:12:37,491 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:12:37,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381492962] [2021-01-06 17:12:37,495 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:12:37,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518717048] [2021-01-06 17:12:37,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:12:37,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-01-06 17:12:37,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235078003] [2021-01-06 17:12:37,497 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-06 17:12:37,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:12:37,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-06 17:12:37,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-01-06 17:12:37,499 INFO L87 Difference]: Start difference. First operand 153 states and 186 transitions. Second operand 12 states. [2021-01-06 17:12:37,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:12:37,910 INFO L93 Difference]: Finished difference Result 175 states and 209 transitions. [2021-01-06 17:12:37,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-01-06 17:12:37,910 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 32 [2021-01-06 17:12:37,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:12:37,912 INFO L225 Difference]: With dead ends: 175 [2021-01-06 17:12:37,912 INFO L226 Difference]: Without dead ends: 173 [2021-01-06 17:12:37,914 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2021-01-06 17:12:37,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-01-06 17:12:37,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 162. [2021-01-06 17:12:37,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2021-01-06 17:12:37,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 196 transitions. [2021-01-06 17:12:37,937 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 196 transitions. Word has length 32 [2021-01-06 17:12:37,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:12:37,937 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 196 transitions. [2021-01-06 17:12:37,937 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-01-06 17:12:37,937 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 196 transitions. [2021-01-06 17:12:37,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-01-06 17:12:37,942 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:12:37,942 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:12:38,157 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-01-06 17:12:38,158 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 17:12:38,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:12:38,159 INFO L82 PathProgramCache]: Analyzing trace with hash 166708793, now seen corresponding path program 1 times [2021-01-06 17:12:38,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:12:38,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219339506] [2021-01-06 17:12:38,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:12:38,171 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:12:38,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [295865626] [2021-01-06 17:12:38,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:12:38,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:12:38,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 56 conjunts are in the unsatisfiable core [2021-01-06 17:12:38,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:12:38,643 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:12:38,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219339506] [2021-01-06 17:12:38,644 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:12:38,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295865626] [2021-01-06 17:12:38,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:12:38,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-01-06 17:12:38,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873236226] [2021-01-06 17:12:38,645 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-01-06 17:12:38,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:12:38,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-01-06 17:12:38,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-01-06 17:12:38,646 INFO L87 Difference]: Start difference. First operand 162 states and 196 transitions. Second operand 13 states. [2021-01-06 17:12:39,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:12:39,269 INFO L93 Difference]: Finished difference Result 198 states and 235 transitions. [2021-01-06 17:12:39,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-01-06 17:12:39,269 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 35 [2021-01-06 17:12:39,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:12:39,271 INFO L225 Difference]: With dead ends: 198 [2021-01-06 17:12:39,271 INFO L226 Difference]: Without dead ends: 192 [2021-01-06 17:12:39,272 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2021-01-06 17:12:39,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-01-06 17:12:39,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 185. [2021-01-06 17:12:39,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2021-01-06 17:12:39,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 224 transitions. [2021-01-06 17:12:39,298 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 224 transitions. Word has length 35 [2021-01-06 17:12:39,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:12:39,298 INFO L481 AbstractCegarLoop]: Abstraction has 185 states and 224 transitions. [2021-01-06 17:12:39,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-01-06 17:12:39,299 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 224 transitions. [2021-01-06 17:12:39,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-01-06 17:12:39,299 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:12:39,299 INFO L422 BasicCegarLoop]: trace histogram [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 17:12:39,514 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-01-06 17:12:39,515 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 17:12:39,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:12:39,516 INFO L82 PathProgramCache]: Analyzing trace with hash -1049273685, now seen corresponding path program 2 times [2021-01-06 17:12:39,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:12:39,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162628494] [2021-01-06 17:12:39,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:12:39,530 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:12:39,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [7432372] [2021-01-06 17:12:39,530 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:12:39,591 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:12:39,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:12:39,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 5 conjunts are in the unsatisfiable core [2021-01-06 17:12:39,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:12:39,656 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:12:39,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162628494] [2021-01-06 17:12:39,656 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:12:39,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7432372] [2021-01-06 17:12:39,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:12:39,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 17:12:39,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237041311] [2021-01-06 17:12:39,662 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:12:39,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:12:39,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:12:39,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:12:39,663 INFO L87 Difference]: Start difference. First operand 185 states and 224 transitions. Second operand 5 states. [2021-01-06 17:12:39,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:12:39,763 INFO L93 Difference]: Finished difference Result 244 states and 289 transitions. [2021-01-06 17:12:39,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:12:39,764 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 40 [2021-01-06 17:12:39,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:12:39,765 INFO L225 Difference]: With dead ends: 244 [2021-01-06 17:12:39,765 INFO L226 Difference]: Without dead ends: 170 [2021-01-06 17:12:39,768 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:12:39,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-01-06 17:12:39,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 150. [2021-01-06 17:12:39,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2021-01-06 17:12:39,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 171 transitions. [2021-01-06 17:12:39,807 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 171 transitions. Word has length 40 [2021-01-06 17:12:39,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:12:39,808 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 171 transitions. [2021-01-06 17:12:39,808 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:12:39,808 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 171 transitions. [2021-01-06 17:12:39,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-01-06 17:12:39,808 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:12:39,809 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:12:40,022 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-01-06 17:12:40,023 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 17:12:40,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:12:40,024 INFO L82 PathProgramCache]: Analyzing trace with hash 1676607048, now seen corresponding path program 1 times [2021-01-06 17:12:40,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:12:40,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919396644] [2021-01-06 17:12:40,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:12:40,035 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:12:40,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [690760944] [2021-01-06 17:12:40,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:12:40,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:12:40,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 68 conjunts are in the unsatisfiable core [2021-01-06 17:12:40,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:12:40,778 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:12:40,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919396644] [2021-01-06 17:12:40,779 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:12:40,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [690760944] [2021-01-06 17:12:40,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:12:40,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-01-06 17:12:40,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003946983] [2021-01-06 17:12:40,780 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-01-06 17:12:40,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:12:40,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-01-06 17:12:40,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-01-06 17:12:40,781 INFO L87 Difference]: Start difference. First operand 150 states and 171 transitions. Second operand 14 states. [2021-01-06 17:12:51,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:12:51,587 INFO L93 Difference]: Finished difference Result 161 states and 180 transitions. [2021-01-06 17:12:51,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-01-06 17:12:51,588 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 41 [2021-01-06 17:12:51,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:12:51,590 INFO L225 Difference]: With dead ends: 161 [2021-01-06 17:12:51,590 INFO L226 Difference]: Without dead ends: 159 [2021-01-06 17:12:51,590 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2021-01-06 17:12:51,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-01-06 17:12:51,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 127. [2021-01-06 17:12:51,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2021-01-06 17:12:51,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 144 transitions. [2021-01-06 17:12:51,607 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 144 transitions. Word has length 41 [2021-01-06 17:12:51,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:12:51,607 INFO L481 AbstractCegarLoop]: Abstraction has 127 states and 144 transitions. [2021-01-06 17:12:51,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-01-06 17:12:51,608 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 144 transitions. [2021-01-06 17:12:51,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-01-06 17:12:51,608 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:12:51,608 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:12:51,809 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:12:51,809 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 17:12:51,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:12:51,810 INFO L82 PathProgramCache]: Analyzing trace with hash 1203110922, now seen corresponding path program 3 times [2021-01-06 17:12:51,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:12:51,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052033025] [2021-01-06 17:12:51,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:12:51,824 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:12:51,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1282586684] [2021-01-06 17:12:51,824 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 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:12:51,888 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-01-06 17:12:51,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:12:51,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 36 conjunts are in the unsatisfiable core [2021-01-06 17:12:51,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:12:52,132 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-01-06 17:12:52,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052033025] [2021-01-06 17:12:52,133 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:12:52,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282586684] [2021-01-06 17:12:52,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:12:52,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-06 17:12:52,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324603822] [2021-01-06 17:12:52,134 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:12:52,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:12:52,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:12:52,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:12:52,135 INFO L87 Difference]: Start difference. First operand 127 states and 144 transitions. Second operand 8 states. [2021-01-06 17:12:54,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:12:54,449 INFO L93 Difference]: Finished difference Result 127 states and 144 transitions. [2021-01-06 17:12:54,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:12:54,450 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41 [2021-01-06 17:12:54,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:12:54,451 INFO L225 Difference]: With dead ends: 127 [2021-01-06 17:12:54,451 INFO L226 Difference]: Without dead ends: 125 [2021-01-06 17:12:54,451 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-01-06 17:12:54,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-01-06 17:12:54,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 117. [2021-01-06 17:12:54,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2021-01-06 17:12:54,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 131 transitions. [2021-01-06 17:12:54,468 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 131 transitions. Word has length 41 [2021-01-06 17:12:54,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:12:54,468 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 131 transitions. [2021-01-06 17:12:54,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:12:54,468 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 131 transitions. [2021-01-06 17:12:54,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-01-06 17:12:54,469 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:12:54,469 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:12:54,683 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-01-06 17:12:54,684 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 17:12:54,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:12:54,685 INFO L82 PathProgramCache]: Analyzing trace with hash 73031501, now seen corresponding path program 2 times [2021-01-06 17:12:54,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:12:54,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482108034] [2021-01-06 17:12:54,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:12:54,697 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:12:54,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1626662585] [2021-01-06 17:12:54,697 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:12:54,770 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:12:54,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:12:54,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 54 conjunts are in the unsatisfiable core [2021-01-06 17:12:54,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:12:55,200 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:12:55,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482108034] [2021-01-06 17:12:55,200 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:12:55,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626662585] [2021-01-06 17:12:55,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:12:55,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-01-06 17:12:55,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344860050] [2021-01-06 17:12:55,205 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-06 17:12:55,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:12:55,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-06 17:12:55,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-01-06 17:12:55,207 INFO L87 Difference]: Start difference. First operand 117 states and 131 transitions. Second operand 12 states. [2021-01-06 17:12:55,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:12:55,765 INFO L93 Difference]: Finished difference Result 157 states and 175 transitions. [2021-01-06 17:12:55,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-01-06 17:12:55,766 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 44 [2021-01-06 17:12:55,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:12:55,767 INFO L225 Difference]: With dead ends: 157 [2021-01-06 17:12:55,767 INFO L226 Difference]: Without dead ends: 151 [2021-01-06 17:12:55,768 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2021-01-06 17:12:55,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-01-06 17:12:55,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 147. [2021-01-06 17:12:55,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2021-01-06 17:12:55,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 165 transitions. [2021-01-06 17:12:55,792 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 165 transitions. Word has length 44 [2021-01-06 17:12:55,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:12:55,793 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 165 transitions. [2021-01-06 17:12:55,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-01-06 17:12:55,793 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 165 transitions. [2021-01-06 17:12:55,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-01-06 17:12:55,793 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:12:55,794 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] [2021-01-06 17:12:56,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-01-06 17:12:56,008 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 17:12:56,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:12:56,009 INFO L82 PathProgramCache]: Analyzing trace with hash -1376461020, now seen corresponding path program 3 times [2021-01-06 17:12:56,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:12:56,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33333812] [2021-01-06 17:12:56,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:12:56,020 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:12:56,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [296508126] [2021-01-06 17:12:56,020 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 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:12:56,091 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-01-06 17:12:56,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:12:56,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 41 conjunts are in the unsatisfiable core [2021-01-06 17:12:56,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:12:56,809 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 17:13:00,207 WARN L197 SmtUtils]: Spent 2.03 s on a formula simplification. DAG size of input: 38 DAG size of output: 35 [2021-01-06 17:13:00,396 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 17:13:00,418 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 17:13:21,425 WARN L197 SmtUtils]: Spent 10.33 s on a formula simplification that was a NOOP. DAG size: 40 [2021-01-06 17:13:27,525 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~q~0 Int) (v_prenex_3 Int) (ULTIMATE.start_main_~s~0 Int) (ULTIMATE.start_main_~r~0 Int) (ULTIMATE.start_main_~x~0 Int) (ULTIMATE.start_main_~y~0 Int) (ULTIMATE.start_main_~k~0 Int)) (let ((.cse0 (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0)) (.cse1 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0))) (and (not (= ULTIMATE.start_main_~k~0 0)) (= (mod (+ (* (+ ULTIMATE.start_main_~s~0 (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~k~0)) ULTIMATE.start_main_~y~0) (* (+ (* v_prenex_3 ULTIMATE.start_main_~k~0) ULTIMATE.start_main_~q~0) ULTIMATE.start_main_~x~0)) ULTIMATE.start_main_~k~0) 0) (not (= (+ .cse0 .cse1) 0)) (= (+ (* v_prenex_3 ULTIMATE.start_main_~x~0) (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)) (div (+ .cse0 .cse1 (* v_prenex_3 ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~k~0) (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~k~0)) ULTIMATE.start_main_~k~0))))) is different from false [2021-01-06 17:13:29,534 WARN L860 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~q~0 Int) (v_prenex_3 Int) (ULTIMATE.start_main_~s~0 Int) (ULTIMATE.start_main_~r~0 Int) (ULTIMATE.start_main_~x~0 Int) (ULTIMATE.start_main_~y~0 Int) (ULTIMATE.start_main_~k~0 Int)) (let ((.cse0 (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0)) (.cse1 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0))) (and (not (= ULTIMATE.start_main_~k~0 0)) (= (mod (+ (* (+ ULTIMATE.start_main_~s~0 (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~k~0)) ULTIMATE.start_main_~y~0) (* (+ (* v_prenex_3 ULTIMATE.start_main_~k~0) ULTIMATE.start_main_~q~0) ULTIMATE.start_main_~x~0)) ULTIMATE.start_main_~k~0) 0) (not (= (+ .cse0 .cse1) 0)) (= (+ (* v_prenex_3 ULTIMATE.start_main_~x~0) (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)) (div (+ .cse0 .cse1 (* v_prenex_3 ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~k~0) (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~k~0)) ULTIMATE.start_main_~k~0))))) is different from true [2021-01-06 17:13:29,546 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-01-06 17:13:29,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33333812] [2021-01-06 17:13:29,547 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:13:29,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296508126] [2021-01-06 17:13:29,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:13:29,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-01-06 17:13:29,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965951852] [2021-01-06 17:13:29,550 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-06 17:13:29,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:13:29,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-06 17:13:29,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=4, NotChecked=18, Total=132 [2021-01-06 17:13:29,551 INFO L87 Difference]: Start difference. First operand 147 states and 165 transitions. Second operand 12 states. [2021-01-06 17:13:53,238 WARN L197 SmtUtils]: Spent 21.52 s on a formula simplification. DAG size of input: 62 DAG size of output: 44 [2021-01-06 17:14:20,071 WARN L197 SmtUtils]: Spent 10.54 s on a formula simplification. DAG size of input: 59 DAG size of output: 19 [2021-01-06 17:14:34,819 WARN L197 SmtUtils]: Spent 6.36 s on a formula simplification. DAG size of input: 45 DAG size of output: 42 [2021-01-06 17:14:52,241 WARN L197 SmtUtils]: Spent 5.60 s on a formula simplification. DAG size of input: 47 DAG size of output: 40 [2021-01-06 17:15:05,567 WARN L197 SmtUtils]: Spent 7.23 s on a formula simplification. DAG size of input: 37 DAG size of output: 34 [2021-01-06 17:15:49,723 WARN L197 SmtUtils]: Spent 10.82 s on a formula simplification. DAG size of input: 51 DAG size of output: 11 [2021-01-06 17:15:53,782 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_prenex_3 Int) (ULTIMATE.start_main_~r~0 Int) (ULTIMATE.start_main_~k~0 Int)) (and (not (= ULTIMATE.start_main_~k~0 0)) (= (+ (* v_prenex_3 c_ULTIMATE.start_main_~x~0) (* ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~y~0)) (div (+ (* c_ULTIMATE.start_main_~s~0 c_ULTIMATE.start_main_~y~0) (* c_ULTIMATE.start_main_~q~0 c_ULTIMATE.start_main_~x~0) (* v_prenex_3 c_ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~k~0) (* ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~k~0) (* (- 1) c_ULTIMATE.start_main_~b~0)) ULTIMATE.start_main_~k~0)) (= (mod (+ (* (+ c_ULTIMATE.start_main_~s~0 (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~k~0)) c_ULTIMATE.start_main_~y~0) (* c_ULTIMATE.start_main_~b~0 (- 1)) (* (+ (* v_prenex_3 ULTIMATE.start_main_~k~0) c_ULTIMATE.start_main_~q~0) c_ULTIMATE.start_main_~x~0)) ULTIMATE.start_main_~k~0) 0))) (exists ((v_prenex_3 Int) (ULTIMATE.start_main_~r~0 Int) (ULTIMATE.start_main_~k~0 Int)) (and (not (= ULTIMATE.start_main_~k~0 0)) (= (mod (+ (* (+ c_ULTIMATE.start_main_~s~0 (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~k~0)) c_ULTIMATE.start_main_~y~0) (* (+ (* v_prenex_3 ULTIMATE.start_main_~k~0) c_ULTIMATE.start_main_~q~0) c_ULTIMATE.start_main_~x~0)) ULTIMATE.start_main_~k~0) 0) (= (+ (* v_prenex_3 c_ULTIMATE.start_main_~x~0) (* ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~y~0)) (div (+ (* c_ULTIMATE.start_main_~s~0 c_ULTIMATE.start_main_~y~0) (* c_ULTIMATE.start_main_~q~0 c_ULTIMATE.start_main_~x~0) (* v_prenex_3 c_ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~k~0) (* ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~k~0)) ULTIMATE.start_main_~k~0))))) is different from true [2021-01-06 17:16:23,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:16:23,191 INFO L93 Difference]: Finished difference Result 147 states and 165 transitions. [2021-01-06 17:16:23,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-01-06 17:16:23,193 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 47 [2021-01-06 17:16:23,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:16:23,194 INFO L225 Difference]: With dead ends: 147 [2021-01-06 17:16:23,194 INFO L226 Difference]: Without dead ends: 143 [2021-01-06 17:16:23,195 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 119.8s TimeCoverageRelationStatistics Valid=71, Invalid=261, Unknown=18, NotChecked=70, Total=420 [2021-01-06 17:16:23,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-01-06 17:16:23,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2021-01-06 17:16:23,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2021-01-06 17:16:23,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 160 transitions. [2021-01-06 17:16:23,222 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 160 transitions. Word has length 47 [2021-01-06 17:16:23,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:16:23,222 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 160 transitions. [2021-01-06 17:16:23,222 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-01-06 17:16:23,222 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 160 transitions. [2021-01-06 17:16:23,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-01-06 17:16:23,223 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:16:23,223 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 17:16:23,438 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-01-06 17:16:23,439 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 17:16:23,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:16:23,439 INFO L82 PathProgramCache]: Analyzing trace with hash 71045575, now seen corresponding path program 1 times [2021-01-06 17:16:23,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:16:23,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936617276] [2021-01-06 17:16:23,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:16:23,452 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:16:23,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [124945578] [2021-01-06 17:16:23,452 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 17:16:23,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:16:23,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 7 conjunts are in the unsatisfiable core [2021-01-06 17:16:23,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:16:23,642 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:16:23,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936617276] [2021-01-06 17:16:23,643 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:16:23,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124945578] [2021-01-06 17:16:23,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:16:23,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-06 17:16:23,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745767799] [2021-01-06 17:16:23,644 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:16:23,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:16:23,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:16:23,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:16:23,645 INFO L87 Difference]: Start difference. First operand 143 states and 160 transitions. Second operand 7 states. [2021-01-06 17:16:24,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:16:24,167 INFO L93 Difference]: Finished difference Result 246 states and 269 transitions. [2021-01-06 17:16:24,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-01-06 17:16:24,168 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 49 [2021-01-06 17:16:24,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:16:24,169 INFO L225 Difference]: With dead ends: 246 [2021-01-06 17:16:24,169 INFO L226 Difference]: Without dead ends: 240 [2021-01-06 17:16:24,170 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-01-06 17:16:24,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-01-06 17:16:24,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 182. [2021-01-06 17:16:24,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2021-01-06 17:16:24,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 209 transitions. [2021-01-06 17:16:24,205 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 209 transitions. Word has length 49 [2021-01-06 17:16:24,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:16:24,205 INFO L481 AbstractCegarLoop]: Abstraction has 182 states and 209 transitions. [2021-01-06 17:16:24,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:16:24,206 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 209 transitions. [2021-01-06 17:16:24,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-01-06 17:16:24,206 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:16:24,206 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:16:24,407 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:16:24,407 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 17:16:24,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:16:24,408 INFO L82 PathProgramCache]: Analyzing trace with hash 74862797, now seen corresponding path program 1 times [2021-01-06 17:16:24,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:16:24,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946215810] [2021-01-06 17:16:24,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:16:24,418 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:16:24,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [508818691] [2021-01-06 17:16:24,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:16:24,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:16:24,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 37 conjunts are in the unsatisfiable core [2021-01-06 17:16:24,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:16:25,184 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:16:25,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946215810] [2021-01-06 17:16:25,187 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:16:25,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508818691] [2021-01-06 17:16:25,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:16:25,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-01-06 17:16:25,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557893638] [2021-01-06 17:16:25,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-01-06 17:16:25,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:16:25,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-01-06 17:16:25,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2021-01-06 17:16:25,189 INFO L87 Difference]: Start difference. First operand 182 states and 209 transitions. Second operand 15 states. [2021-01-06 17:16:26,839 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 23 [2021-01-06 17:16:27,089 WARN L197 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 34 [2021-01-06 17:16:27,274 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 29 [2021-01-06 17:16:27,590 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 27 [2021-01-06 17:16:28,144 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 27 [2021-01-06 17:16:28,831 WARN L197 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 24 [2021-01-06 17:16:30,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:16:30,325 INFO L93 Difference]: Finished difference Result 314 states and 349 transitions. [2021-01-06 17:16:30,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-01-06 17:16:30,325 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 49 [2021-01-06 17:16:30,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:16:30,328 INFO L225 Difference]: With dead ends: 314 [2021-01-06 17:16:30,328 INFO L226 Difference]: Without dead ends: 310 [2021-01-06 17:16:30,330 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=458, Invalid=1704, Unknown=0, NotChecked=0, Total=2162 [2021-01-06 17:16:30,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2021-01-06 17:16:30,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 272. [2021-01-06 17:16:30,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2021-01-06 17:16:30,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 320 transitions. [2021-01-06 17:16:30,377 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 320 transitions. Word has length 49 [2021-01-06 17:16:30,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:16:30,378 INFO L481 AbstractCegarLoop]: Abstraction has 272 states and 320 transitions. [2021-01-06 17:16:30,378 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-01-06 17:16:30,378 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 320 transitions. [2021-01-06 17:16:30,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-01-06 17:16:30,378 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:16:30,378 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:16:30,591 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:16:30,592 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 17:16:30,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:16:30,593 INFO L82 PathProgramCache]: Analyzing trace with hash 574584924, now seen corresponding path program 2 times [2021-01-06 17:16:30,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:16:30,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259468479] [2021-01-06 17:16:30,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:16:30,602 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:16:30,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1113390090] [2021-01-06 17:16:30,602 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true