/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/array-programs/partial_mod_count_limited_gen.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 00:43:36,058 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 00:43:36,062 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 00:43:36,127 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 00:43:36,128 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 00:43:36,133 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 00:43:36,135 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 00:43:36,138 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 00:43:36,140 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 00:43:36,142 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 00:43:36,143 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 00:43:36,145 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 00:43:36,145 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 00:43:36,147 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 00:43:36,148 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 00:43:36,150 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 00:43:36,166 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 00:43:36,168 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 00:43:36,170 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 00:43:36,173 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 00:43:36,175 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 00:43:36,177 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 00:43:36,178 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 00:43:36,179 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 00:43:36,182 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 00:43:36,193 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 00:43:36,194 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 00:43:36,195 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 00:43:36,196 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 00:43:36,224 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 00:43:36,224 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 00:43:36,226 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 00:43:36,226 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 00:43:36,227 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 00:43:36,227 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 00:43:36,227 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 00:43:36,228 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 00:43:36,228 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 00:43:36,228 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 00:43:36,228 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 00:43:36,228 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 00:43:36,229 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 00:43:36,229 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 00:43:36,229 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 00:43:36,229 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 00:43:36,230 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 00:43:36,230 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 00:43:36,230 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 00:43:36,230 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 00:43:36,230 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 00:43:36,231 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 00:43:36,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 00:43:36,231 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 00:43:36,231 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 00:43:36,232 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 00:43:36,613 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 00:43:36,652 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 00:43:36,655 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 00:43:36,657 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 00:43:36,658 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 00:43:36,659 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-programs/partial_mod_count_limited_gen.c [2020-12-23 00:43:36,756 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/25c941a67/b3fdf9b2e049450988750fe14db61c3e/FLAGb2fe85548 [2020-12-23 00:43:37,397 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 00:43:37,397 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/array-programs/partial_mod_count_limited_gen.c [2020-12-23 00:43:37,405 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/25c941a67/b3fdf9b2e049450988750fe14db61c3e/FLAGb2fe85548 [2020-12-23 00:43:37,784 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/25c941a67/b3fdf9b2e049450988750fe14db61c3e [2020-12-23 00:43:37,787 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 00:43:37,791 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 00:43:37,796 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 00:43:37,796 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 00:43:37,801 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 00:43:37,802 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 12:43:37" (1/1) ... [2020-12-23 00:43:37,804 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ac87876 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:43:37, skipping insertion in model container [2020-12-23 00:43:37,804 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 12:43:37" (1/1) ... [2020-12-23 00:43:37,813 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 00:43:37,833 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 00:43:37,995 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/array-programs/partial_mod_count_limited_gen.c[333,346] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: ArrayLHS[VariableLHS[~a~0,],[IdentifierExpression[~i~0,]]] left hand side expression in assignment: lhs: ArrayLHS[VariableLHS[~a~0,],[IdentifierExpression[~i~0,]]] left hand side expression in assignment: lhs: VariableLHS[~i~0,] [2020-12-23 00:43:38,025 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 00:43:38,035 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 00:43:38,049 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/array-programs/partial_mod_count_limited_gen.c[333,346] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#a~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~#a~0,],offset],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~i~0,]]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#a~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~#a~0,],offset],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~i~0,]]]]] left hand side expression in assignment: lhs: VariableLHS[~i~0,] [2020-12-23 00:43:38,062 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 00:43:38,082 INFO L208 MainTranslator]: Completed translation [2020-12-23 00:43:38,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:43:38 WrapperNode [2020-12-23 00:43:38,082 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 00:43:38,084 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 00:43:38,084 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 00:43:38,084 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 00:43:38,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:43:38" (1/1) ... [2020-12-23 00:43:38,104 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:43:38" (1/1) ... [2020-12-23 00:43:38,133 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 00:43:38,134 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 00:43:38,134 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 00:43:38,135 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 00:43:38,146 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:43:38" (1/1) ... [2020-12-23 00:43:38,146 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:43:38" (1/1) ... [2020-12-23 00:43:38,149 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:43:38" (1/1) ... [2020-12-23 00:43:38,150 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:43:38" (1/1) ... [2020-12-23 00:43:38,157 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:43:38" (1/1) ... [2020-12-23 00:43:38,162 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:43:38" (1/1) ... [2020-12-23 00:43:38,165 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:43:38" (1/1) ... [2020-12-23 00:43:38,168 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 00:43:38,170 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 00:43:38,170 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 00:43:38,170 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 00:43:38,171 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:43:38" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 00:43:38,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 00:43:38,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 00:43:38,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 00:43:38,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 00:43:38,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 00:43:38,321 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-23 00:43:38,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 00:43:38,880 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 00:43:38,881 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2020-12-23 00:43:38,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 12:43:38 BoogieIcfgContainer [2020-12-23 00:43:38,883 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 00:43:38,885 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 00:43:38,886 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 00:43:38,890 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 00:43:38,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 12:43:37" (1/3) ... [2020-12-23 00:43:38,891 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f7f2f03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 12:43:38, skipping insertion in model container [2020-12-23 00:43:38,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:43:38" (2/3) ... [2020-12-23 00:43:38,892 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f7f2f03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 12:43:38, skipping insertion in model container [2020-12-23 00:43:38,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 12:43:38" (3/3) ... [2020-12-23 00:43:38,894 INFO L111 eAbstractionObserver]: Analyzing ICFG partial_mod_count_limited_gen.c [2020-12-23 00:43:38,902 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 00:43:38,910 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 00:43:38,934 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 00:43:38,977 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 00:43:38,977 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 00:43:38,978 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 00:43:38,978 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 00:43:38,978 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 00:43:38,978 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 00:43:38,978 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 00:43:38,979 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 00:43:38,998 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-12-23 00:43:39,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 00:43:39,005 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 00:43:39,006 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 00:43:39,007 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 00:43:39,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 00:43:39,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1209811911, now seen corresponding path program 1 times [2020-12-23 00:43:39,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 00:43:39,026 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993405758] [2020-12-23 00:43:39,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 00:43:39,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 00:43:39,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 00:43:39,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993405758] [2020-12-23 00:43:39,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 00:43:39,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 00:43:39,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876952469] [2020-12-23 00:43:39,229 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 00:43:39,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 00:43:39,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 00:43:39,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 00:43:39,252 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2020-12-23 00:43:39,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 00:43:39,276 INFO L93 Difference]: Finished difference Result 43 states and 60 transitions. [2020-12-23 00:43:39,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 00:43:39,278 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-12-23 00:43:39,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 00:43:39,289 INFO L225 Difference]: With dead ends: 43 [2020-12-23 00:43:39,290 INFO L226 Difference]: Without dead ends: 19 [2020-12-23 00:43:39,294 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 00:43:39,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-12-23 00:43:39,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-12-23 00:43:39,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-12-23 00:43:39,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2020-12-23 00:43:39,341 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 13 [2020-12-23 00:43:39,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 00:43:39,342 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2020-12-23 00:43:39,342 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 00:43:39,342 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2020-12-23 00:43:39,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 00:43:39,343 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 00:43:39,343 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 00:43:39,344 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 00:43:39,344 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 00:43:39,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 00:43:39,345 INFO L82 PathProgramCache]: Analyzing trace with hash 171311037, now seen corresponding path program 1 times [2020-12-23 00:43:39,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 00:43:39,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624321173] [2020-12-23 00:43:39,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 00:43:39,371 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 00:43:39,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1241404717] [2020-12-23 00:43:39,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 00:43:39,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 00:43:39,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-23 00:43:39,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 00:43:39,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 00:43:39,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624321173] [2020-12-23 00:43:39,564 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 00:43:39,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241404717] [2020-12-23 00:43:39,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 00:43:39,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 00:43:39,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387586109] [2020-12-23 00:43:39,567 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 00:43:39,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 00:43:39,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 00:43:39,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 00:43:39,569 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand 4 states. [2020-12-23 00:43:41,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 00:43:41,670 INFO L93 Difference]: Finished difference Result 35 states and 44 transitions. [2020-12-23 00:43:41,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 00:43:41,671 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-23 00:43:41,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 00:43:41,672 INFO L225 Difference]: With dead ends: 35 [2020-12-23 00:43:41,672 INFO L226 Difference]: Without dead ends: 27 [2020-12-23 00:43:41,674 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 00:43:41,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-12-23 00:43:41,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 20. [2020-12-23 00:43:41,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-12-23 00:43:41,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2020-12-23 00:43:41,680 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 13 [2020-12-23 00:43:41,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 00:43:41,680 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2020-12-23 00:43:41,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 00:43:41,680 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2020-12-23 00:43:41,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-23 00:43:41,681 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 00:43:41,681 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 00:43:41,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-23 00:43:41,897 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 00:43:41,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 00:43:41,899 INFO L82 PathProgramCache]: Analyzing trace with hash -109052629, now seen corresponding path program 1 times [2020-12-23 00:43:41,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 00:43:41,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783156783] [2020-12-23 00:43:41,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 00:43:41,919 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 00:43:41,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1264323394] [2020-12-23 00:43:41,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 00:43:42,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 00:43:42,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-23 00:43:42,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 00:43:42,075 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 00:43:42,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783156783] [2020-12-23 00:43:42,076 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 00:43:42,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264323394] [2020-12-23 00:43:42,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 00:43:42,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-12-23 00:43:42,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895049179] [2020-12-23 00:43:42,078 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 00:43:42,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 00:43:42,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 00:43:42,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-23 00:43:42,079 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand 5 states. [2020-12-23 00:43:44,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 00:43:44,213 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2020-12-23 00:43:44,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 00:43:44,214 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-12-23 00:43:44,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 00:43:44,215 INFO L225 Difference]: With dead ends: 40 [2020-12-23 00:43:44,215 INFO L226 Difference]: Without dead ends: 32 [2020-12-23 00:43:44,216 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-23 00:43:44,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-12-23 00:43:44,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 25. [2020-12-23 00:43:44,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-12-23 00:43:44,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2020-12-23 00:43:44,223 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 18 [2020-12-23 00:43:44,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 00:43:44,223 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2020-12-23 00:43:44,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 00:43:44,223 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2020-12-23 00:43:44,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-23 00:43:44,225 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 00:43:44,225 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 00:43:44,440 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 00:43:44,441 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 00:43:44,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 00:43:44,443 INFO L82 PathProgramCache]: Analyzing trace with hash -1516161923, now seen corresponding path program 2 times [2020-12-23 00:43:44,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 00:43:44,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298580275] [2020-12-23 00:43:44,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 00:43:44,475 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 00:43:44,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2136542362] [2020-12-23 00:43:44,476 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 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