/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 17:31:38,245 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 17:31:38,248 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 17:31:38,282 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 17:31:38,283 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 17:31:38,284 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 17:31:38,286 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 17:31:38,290 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 17:31:38,294 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 17:31:38,296 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 17:31:38,300 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 17:31:38,303 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 17:31:38,304 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 17:31:38,310 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 17:31:38,312 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 17:31:38,314 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 17:31:38,315 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 17:31:38,318 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 17:31:38,324 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 17:31:38,330 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 17:31:38,334 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 17:31:38,337 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 17:31:38,338 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 17:31:38,341 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 17:31:38,348 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 17:31:38,369 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 17:31:38,373 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 17:31:38,374 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 17:31:38,375 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 17:31:38,422 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 17:31:38,422 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 17:31:38,427 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 17:31:38,427 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 17:31:38,427 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 17:31:38,428 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 17:31:38,428 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 17:31:38,428 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 17:31:38,428 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 17:31:38,429 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 17:31:38,430 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 17:31:38,430 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 17:31:38,431 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 17:31:38,431 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 17:31:38,431 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 17:31:38,432 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 17:31:38,432 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 17:31:38,432 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:31:38,432 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 17:31:38,432 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 17:31:38,433 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 17:31:38,433 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 17:31:38,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 17:31:38,433 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 17:31:38,433 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 17:31:38,434 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 17:31:38,852 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 17:31:38,877 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 17:31:38,881 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 17:31:38,882 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 17:31:38,887 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 17:31:38,888 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound20.c [2021-01-06 17:31:38,959 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/726d4eac9/610db368dadb41819fa898431386f8a7/FLAG731d7210e [2021-01-06 17:31:39,618 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 17:31:39,619 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound20.c [2021-01-06 17:31:39,630 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/726d4eac9/610db368dadb41819fa898431386f8a7/FLAG731d7210e [2021-01-06 17:31:39,988 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/726d4eac9/610db368dadb41819fa898431386f8a7 [2021-01-06 17:31:39,993 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 17:31:39,998 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 17:31:40,003 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 17:31:40,003 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 17:31:40,009 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 17:31:40,010 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:31:39" (1/1) ... [2021-01-06 17:31:40,012 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e0e4f71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:31:40, skipping insertion in model container [2021-01-06 17:31:40,012 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:31:39" (1/1) ... [2021-01-06 17:31:40,026 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 17:31:40,047 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 17:31:40,262 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound20.c[489,502] 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[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~s~0,] [2021-01-06 17:31:40,310 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:31:40,319 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 17:31:40,330 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound20.c[489,502] 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[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~s~0,] [2021-01-06 17:31:40,341 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:31:40,356 INFO L208 MainTranslator]: Completed translation [2021-01-06 17:31:40,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:31:40 WrapperNode [2021-01-06 17:31:40,357 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 17:31:40,358 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 17:31:40,359 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 17:31:40,359 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 17:31:40,367 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:31:40" (1/1) ... [2021-01-06 17:31:40,385 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:31:40" (1/1) ... [2021-01-06 17:31:40,408 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 17:31:40,409 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 17:31:40,409 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 17:31:40,409 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 17:31:40,418 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:31:40" (1/1) ... [2021-01-06 17:31:40,419 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:31:40" (1/1) ... [2021-01-06 17:31:40,421 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:31:40" (1/1) ... [2021-01-06 17:31:40,421 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:31:40" (1/1) ... [2021-01-06 17:31:40,428 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:31:40" (1/1) ... [2021-01-06 17:31:40,432 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:31:40" (1/1) ... [2021-01-06 17:31:40,434 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:31:40" (1/1) ... [2021-01-06 17:31:40,437 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 17:31:40,438 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 17:31:40,438 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 17:31:40,438 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 17:31:40,439 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:31:40" (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 17:31:40,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 17:31:40,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 17:31:40,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 17:31:40,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 17:31:40,995 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 17:31:40,996 INFO L299 CfgBuilder]: Removed 27 assume(true) statements. [2021-01-06 17:31:40,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:31:40 BoogieIcfgContainer [2021-01-06 17:31:40,997 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 17:31:40,999 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 17:31:41,000 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 17:31:41,011 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 17:31:41,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 05:31:39" (1/3) ... [2021-01-06 17:31:41,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bc03ca8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:31:41, skipping insertion in model container [2021-01-06 17:31:41,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:31:40" (2/3) ... [2021-01-06 17:31:41,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bc03ca8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:31:41, skipping insertion in model container [2021-01-06 17:31:41,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:31:40" (3/3) ... [2021-01-06 17:31:41,014 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd-ll_valuebound20.c [2021-01-06 17:31:41,024 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 17:31:41,029 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2021-01-06 17:31:41,049 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-01-06 17:31:41,092 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 17:31:41,092 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 17:31:41,092 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 17:31:41,093 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 17:31:41,093 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 17:31:41,093 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 17:31:41,093 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 17:31:41,093 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 17:31:41,112 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2021-01-06 17:31:41,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-06 17:31:41,118 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:31:41,119 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:31:41,120 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:31:41,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:31:41,127 INFO L82 PathProgramCache]: Analyzing trace with hash -144177098, now seen corresponding path program 1 times [2021-01-06 17:31:41,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:31:41,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496136244] [2021-01-06 17:31:41,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:31:41,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:31:41,347 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 17:31:41,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496136244] [2021-01-06 17:31:41,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:31:41,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 17:31:41,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380850544] [2021-01-06 17:31:41,354 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 17:31:41,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:31:41,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 17:31:41,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 17:31:41,376 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 2 states. [2021-01-06 17:31:41,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:31:41,406 INFO L93 Difference]: Finished difference Result 85 states and 112 transitions. [2021-01-06 17:31:41,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 17:31:41,407 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2021-01-06 17:31:41,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:31:41,417 INFO L225 Difference]: With dead ends: 85 [2021-01-06 17:31:41,417 INFO L226 Difference]: Without dead ends: 40 [2021-01-06 17:31:41,421 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 17:31:41,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-01-06 17:31:41,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-01-06 17:31:41,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2021-01-06 17:31:41,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2021-01-06 17:31:41,458 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 13 [2021-01-06 17:31:41,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:31:41,458 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2021-01-06 17:31:41,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 17:31:41,458 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2021-01-06 17:31:41,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-06 17:31:41,459 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:31:41,459 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:31:41,460 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 17:31:41,460 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:31:41,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:31:41,461 INFO L82 PathProgramCache]: Analyzing trace with hash -1281167042, now seen corresponding path program 1 times [2021-01-06 17:31:41,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:31:41,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595053020] [2021-01-06 17:31:41,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:31:41,483 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:31:41,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [390404426] [2021-01-06 17:31:41,484 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 17:31:41,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:31:41,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 17 conjunts are in the unsatisfiable core [2021-01-06 17:31:41,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:31:41,674 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 17:31:41,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595053020] [2021-01-06 17:31:41,677 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:31:41,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390404426] [2021-01-06 17:31:41,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:31:41,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 17:31:41,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163391185] [2021-01-06 17:31:41,680 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:31:41,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:31:41,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:31:41,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:31:41,683 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand 5 states. [2021-01-06 17:31:41,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:31:41,860 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2021-01-06 17:31:41,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 17:31:41,861 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2021-01-06 17:31:41,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:31:41,862 INFO L225 Difference]: With dead ends: 70 [2021-01-06 17:31:41,862 INFO L226 Difference]: Without dead ends: 66 [2021-01-06 17:31:41,864 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:31:41,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-01-06 17:31:41,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2021-01-06 17:31:41,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2021-01-06 17:31:41,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 61 transitions. [2021-01-06 17:31:41,876 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 61 transitions. Word has length 13 [2021-01-06 17:31:41,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:31:41,876 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 61 transitions. [2021-01-06 17:31:41,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:31:41,876 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 61 transitions. [2021-01-06 17:31:41,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-01-06 17:31:41,877 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:31:41,877 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:31:42,091 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-01-06 17:31:42,091 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:31:42,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:31:42,093 INFO L82 PathProgramCache]: Analyzing trace with hash 1454243009, now seen corresponding path program 1 times [2021-01-06 17:31:42,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:31:42,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139812043] [2021-01-06 17:31:42,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:31:42,140 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:31:42,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1203817473] [2021-01-06 17:31:42,140 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 17:31:42,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:31:42,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 32 conjunts are in the unsatisfiable core [2021-01-06 17:31:42,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:31:42,455 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 17:31:42,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139812043] [2021-01-06 17:31:42,456 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:31:42,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203817473] [2021-01-06 17:31:42,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:31:42,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-01-06 17:31:42,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174483916] [2021-01-06 17:31:42,457 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-06 17:31:42,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:31:42,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-06 17:31:42,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-01-06 17:31:42,459 INFO L87 Difference]: Start difference. First operand 54 states and 61 transitions. Second operand 12 states. [2021-01-06 17:31:42,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:31:42,883 INFO L93 Difference]: Finished difference Result 98 states and 112 transitions. [2021-01-06 17:31:42,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-01-06 17:31:42,884 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2021-01-06 17:31:42,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:31:42,887 INFO L225 Difference]: With dead ends: 98 [2021-01-06 17:31:42,887 INFO L226 Difference]: Without dead ends: 96 [2021-01-06 17:31:42,888 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2021-01-06 17:31:42,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-01-06 17:31:42,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 70. [2021-01-06 17:31:42,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2021-01-06 17:31:42,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 84 transitions. [2021-01-06 17:31:42,903 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 84 transitions. Word has length 15 [2021-01-06 17:31:42,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:31:42,903 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 84 transitions. [2021-01-06 17:31:42,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-01-06 17:31:42,903 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 84 transitions. [2021-01-06 17:31:42,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-01-06 17:31:42,904 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:31:42,904 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:31:43,119 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:31:43,120 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:31:43,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:31:43,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1663317220, now seen corresponding path program 1 times [2021-01-06 17:31:43,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:31:43,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384859866] [2021-01-06 17:31:43,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:31:43,140 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:31:43,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1452243755] [2021-01-06 17:31:43,141 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 17:31:43,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:31:43,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-06 17:31:43,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:31:43,361 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 17:31:43,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384859866] [2021-01-06 17:31:43,362 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:31:43,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452243755] [2021-01-06 17:31:43,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:31:43,362 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-06 17:31:43,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558110772] [2021-01-06 17:31:43,363 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:31:43,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:31:43,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:31:43,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:31:43,366 INFO L87 Difference]: Start difference. First operand 70 states and 84 transitions. Second operand 8 states. [2021-01-06 17:31:43,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:31:43,589 INFO L93 Difference]: Finished difference Result 84 states and 93 transitions. [2021-01-06 17:31:43,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 17:31:43,590 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2021-01-06 17:31:43,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:31:43,591 INFO L225 Difference]: With dead ends: 84 [2021-01-06 17:31:43,591 INFO L226 Difference]: Without dead ends: 76 [2021-01-06 17:31:43,592 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-01-06 17:31:43,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-01-06 17:31:43,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 68. [2021-01-06 17:31:43,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2021-01-06 17:31:43,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 79 transitions. [2021-01-06 17:31:43,603 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 79 transitions. Word has length 17 [2021-01-06 17:31:43,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:31:43,603 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 79 transitions. [2021-01-06 17:31:43,603 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:31:43,603 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 79 transitions. [2021-01-06 17:31:43,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-01-06 17:31:43,604 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:31:43,604 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 17:31:43,817 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:31:43,818 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:31:43,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:31:43,819 INFO L82 PathProgramCache]: Analyzing trace with hash 850548497, now seen corresponding path program 1 times [2021-01-06 17:31:43,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:31:43,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906417597] [2021-01-06 17:31:43,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:31:43,837 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:31:43,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1961617744] [2021-01-06 17:31:43,838 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 17:31:43,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:31:43,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 8 conjunts are in the unsatisfiable core [2021-01-06 17:31:43,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:31:43,914 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 17:31:43,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906417597] [2021-01-06 17:31:43,914 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:31:43,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961617744] [2021-01-06 17:31:43,915 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:31:43,915 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 17:31:43,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130979385] [2021-01-06 17:31:43,917 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 17:31:43,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:31:43,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 17:31:43,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 17:31:43,918 INFO L87 Difference]: Start difference. First operand 68 states and 79 transitions. Second operand 4 states. [2021-01-06 17:31:43,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:31:43,984 INFO L93 Difference]: Finished difference Result 68 states and 79 transitions. [2021-01-06 17:31:43,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 17:31:43,985 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2021-01-06 17:31:43,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:31:43,986 INFO L225 Difference]: With dead ends: 68 [2021-01-06 17:31:43,986 INFO L226 Difference]: Without dead ends: 66 [2021-01-06 17:31:43,987 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:31:43,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-01-06 17:31:43,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2021-01-06 17:31:43,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2021-01-06 17:31:43,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 76 transitions. [2021-01-06 17:31:43,996 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 76 transitions. Word has length 20 [2021-01-06 17:31:43,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:31:43,997 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 76 transitions. [2021-01-06 17:31:43,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 17:31:43,997 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 76 transitions. [2021-01-06 17:31:43,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-01-06 17:31:43,998 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:31:43,998 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] [2021-01-06 17:31:44,212 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:31:44,213 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:31:44,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:31:44,215 INFO L82 PathProgramCache]: Analyzing trace with hash 598848193, now seen corresponding path program 1 times [2021-01-06 17:31:44,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:31:44,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588318436] [2021-01-06 17:31:44,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:31:44,240 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:31:44,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2030047192] [2021-01-06 17:31:44,241 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 17:31:44,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:31:44,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 19 conjunts are in the unsatisfiable core [2021-01-06 17:31:44,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:31:44,350 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-06 17:31:44,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588318436] [2021-01-06 17:31:44,351 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:31:44,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030047192] [2021-01-06 17:31:44,351 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:31:44,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-01-06 17:31:44,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807295576] [2021-01-06 17:31:44,352 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:31:44,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:31:44,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:31:44,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:31:44,353 INFO L87 Difference]: Start difference. First operand 66 states and 76 transitions. Second operand 5 states. [2021-01-06 17:31:44,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:31:44,457 INFO L93 Difference]: Finished difference Result 88 states and 95 transitions. [2021-01-06 17:31:44,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 17:31:44,458 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2021-01-06 17:31:44,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:31:44,459 INFO L225 Difference]: With dead ends: 88 [2021-01-06 17:31:44,459 INFO L226 Difference]: Without dead ends: 84 [2021-01-06 17:31:44,460 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:31:44,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-01-06 17:31:44,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 72. [2021-01-06 17:31:44,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2021-01-06 17:31:44,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 82 transitions. [2021-01-06 17:31:44,485 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 82 transitions. Word has length 21 [2021-01-06 17:31:44,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:31:44,485 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 82 transitions. [2021-01-06 17:31:44,485 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:31:44,485 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 82 transitions. [2021-01-06 17:31:44,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-01-06 17:31:44,487 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:31:44,487 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:31:44,695 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-01-06 17:31:44,696 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:31:44,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:31:44,697 INFO L82 PathProgramCache]: Analyzing trace with hash 1333477300, now seen corresponding path program 1 times [2021-01-06 17:31:44,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:31:44,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023848692] [2021-01-06 17:31:44,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:31:44,712 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:31:44,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1662916909] [2021-01-06 17:31:44,714 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 17:31:44,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:31:44,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 18 conjunts are in the unsatisfiable core [2021-01-06 17:31:44,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:31:44,862 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 17:31:44,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023848692] [2021-01-06 17:31:44,862 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:31:44,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662916909] [2021-01-06 17:31:44,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:31:44,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-06 17:31:44,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207608427] [2021-01-06 17:31:44,864 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:31:44,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:31:44,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:31:44,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:31:44,865 INFO L87 Difference]: Start difference. First operand 72 states and 82 transitions. Second operand 8 states. [2021-01-06 17:31:45,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:31:45,088 INFO L93 Difference]: Finished difference Result 80 states and 90 transitions. [2021-01-06 17:31:45,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 17:31:45,088 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2021-01-06 17:31:45,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:31:45,089 INFO L225 Difference]: With dead ends: 80 [2021-01-06 17:31:45,089 INFO L226 Difference]: Without dead ends: 72 [2021-01-06 17:31:45,090 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:31:45,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-01-06 17:31:45,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 70. [2021-01-06 17:31:45,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2021-01-06 17:31:45,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2021-01-06 17:31:45,114 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 22 [2021-01-06 17:31:45,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:31:45,115 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2021-01-06 17:31:45,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:31:45,115 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2021-01-06 17:31:45,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-01-06 17:31:45,116 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:31:45,116 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:31:45,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:31:45,332 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:31:45,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:31:45,333 INFO L82 PathProgramCache]: Analyzing trace with hash -89606074, now seen corresponding path program 1 times [2021-01-06 17:31:45,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:31:45,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147656935] [2021-01-06 17:31:45,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:31:45,349 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:31:45,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1968063981] [2021-01-06 17:31:45,350 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 17:31:45,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:31:45,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 38 conjunts are in the unsatisfiable core [2021-01-06 17:31:45,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:31:45,575 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:31:45,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147656935] [2021-01-06 17:31:45,576 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:31:45,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968063981] [2021-01-06 17:31:45,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:31:45,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-01-06 17:31:45,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132059128] [2021-01-06 17:31:45,577 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 17:31:45,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:31:45,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 17:31:45,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:31:45,578 INFO L87 Difference]: Start difference. First operand 70 states and 78 transitions. Second operand 9 states. [2021-01-06 17:31:46,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:31:46,082 INFO L93 Difference]: Finished difference Result 105 states and 115 transitions. [2021-01-06 17:31:46,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-01-06 17:31:46,083 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2021-01-06 17:31:46,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:31:46,085 INFO L225 Difference]: With dead ends: 105 [2021-01-06 17:31:46,085 INFO L226 Difference]: Without dead ends: 103 [2021-01-06 17:31:46,085 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-01-06 17:31:46,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-01-06 17:31:46,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 74. [2021-01-06 17:31:46,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2021-01-06 17:31:46,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 82 transitions. [2021-01-06 17:31:46,111 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 82 transitions. Word has length 23 [2021-01-06 17:31:46,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:31:46,111 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 82 transitions. [2021-01-06 17:31:46,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 17:31:46,111 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 82 transitions. [2021-01-06 17:31:46,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-01-06 17:31:46,112 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:31:46,112 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] [2021-01-06 17:31:46,326 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:31:46,327 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:31:46,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:31:46,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1021281049, now seen corresponding path program 1 times [2021-01-06 17:31:46,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:31:46,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931779141] [2021-01-06 17:31:46,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:31:46,362 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:31:46,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1274845862] [2021-01-06 17:31:46,363 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 17:31:46,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:31:46,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 45 conjunts are in the unsatisfiable core [2021-01-06 17:31:46,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:31:46,694 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 17:31:46,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931779141] [2021-01-06 17:31:46,694 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:31:46,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274845862] [2021-01-06 17:31:46,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:31:46,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-01-06 17:31:46,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910933972] [2021-01-06 17:31:46,702 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-06 17:31:46,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:31:46,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-06 17:31:46,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-01-06 17:31:46,704 INFO L87 Difference]: Start difference. First operand 74 states and 82 transitions. Second operand 11 states. [2021-01-06 17:31:47,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:31:47,113 INFO L93 Difference]: Finished difference Result 118 states and 130 transitions. [2021-01-06 17:31:47,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-01-06 17:31:47,114 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2021-01-06 17:31:47,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:31:47,115 INFO L225 Difference]: With dead ends: 118 [2021-01-06 17:31:47,115 INFO L226 Difference]: Without dead ends: 104 [2021-01-06 17:31:47,115 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-01-06 17:31:47,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-01-06 17:31:47,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 96. [2021-01-06 17:31:47,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2021-01-06 17:31:47,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 109 transitions. [2021-01-06 17:31:47,131 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 109 transitions. Word has length 25 [2021-01-06 17:31:47,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:31:47,131 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 109 transitions. [2021-01-06 17:31:47,131 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-01-06 17:31:47,132 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 109 transitions. [2021-01-06 17:31:47,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-01-06 17:31:47,133 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:31:47,133 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:31:47,344 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-01-06 17:31:47,345 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:31:47,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:31:47,346 INFO L82 PathProgramCache]: Analyzing trace with hash 477321350, now seen corresponding path program 1 times [2021-01-06 17:31:47,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:31:47,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995466807] [2021-01-06 17:31:47,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:31:47,364 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:31:47,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1383184470] [2021-01-06 17:31:47,366 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 17:31:47,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:31:47,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 31 conjunts are in the unsatisfiable core [2021-01-06 17:31:47,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:31:47,568 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:31:47,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995466807] [2021-01-06 17:31:47,569 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:31:47,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1383184470] [2021-01-06 17:31:47,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:31:47,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-06 17:31:47,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965854260] [2021-01-06 17:31:47,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:31:47,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:31:47,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:31:47,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:31:47,571 INFO L87 Difference]: Start difference. First operand 96 states and 109 transitions. Second operand 8 states. [2021-01-06 17:31:47,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:31:47,863 INFO L93 Difference]: Finished difference Result 116 states and 130 transitions. [2021-01-06 17:31:47,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 17:31:47,864 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2021-01-06 17:31:47,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:31:47,865 INFO L225 Difference]: With dead ends: 116 [2021-01-06 17:31:47,865 INFO L226 Difference]: Without dead ends: 106 [2021-01-06 17:31:47,867 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2021-01-06 17:31:47,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-01-06 17:31:47,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 103. [2021-01-06 17:31:47,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2021-01-06 17:31:47,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 117 transitions. [2021-01-06 17:31:47,895 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 117 transitions. Word has length 29 [2021-01-06 17:31:47,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:31:47,895 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 117 transitions. [2021-01-06 17:31:47,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:31:47,896 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 117 transitions. [2021-01-06 17:31:47,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-01-06 17:31:47,898 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:31:47,899 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:31:48,113 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:31:48,114 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:31:48,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:31:48,115 INFO L82 PathProgramCache]: Analyzing trace with hash 219215494, now seen corresponding path program 2 times [2021-01-06 17:31:48,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:31:48,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348074034] [2021-01-06 17:31:48,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:31:48,129 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:31:48,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2097610102] [2021-01-06 17:31:48,130 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:31:48,187 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:31:48,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:31:48,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 33 conjunts are in the unsatisfiable core [2021-01-06 17:31:48,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:31:48,351 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:31:48,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348074034] [2021-01-06 17:31:48,351 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:31:48,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097610102] [2021-01-06 17:31:48,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:31:48,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-06 17:31:48,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012921789] [2021-01-06 17:31:48,354 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:31:48,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:31:48,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:31:48,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:31:48,355 INFO L87 Difference]: Start difference. First operand 103 states and 117 transitions. Second operand 8 states. [2021-01-06 17:31:48,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:31:48,752 INFO L93 Difference]: Finished difference Result 131 states and 147 transitions. [2021-01-06 17:31:48,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-06 17:31:48,753 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2021-01-06 17:31:48,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:31:48,756 INFO L225 Difference]: With dead ends: 131 [2021-01-06 17:31:48,756 INFO L226 Difference]: Without dead ends: 127 [2021-01-06 17:31:48,757 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2021-01-06 17:31:48,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-01-06 17:31:48,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 114. [2021-01-06 17:31:48,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2021-01-06 17:31:48,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 131 transitions. [2021-01-06 17:31:48,779 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 131 transitions. Word has length 29 [2021-01-06 17:31:48,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:31:48,780 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 131 transitions. [2021-01-06 17:31:48,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:31:48,780 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 131 transitions. [2021-01-06 17:31:48,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-01-06 17:31:48,784 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:31:48,784 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:31:48,997 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:31:48,998 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:31:49,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:31:49,001 INFO L82 PathProgramCache]: Analyzing trace with hash -855526903, now seen corresponding path program 1 times [2021-01-06 17:31:49,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:31:49,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431879940] [2021-01-06 17:31:49,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:31:49,013 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:31:49,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1519669830] [2021-01-06 17:31:49,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:31:49,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:31:49,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 37 conjunts are in the unsatisfiable core [2021-01-06 17:31:49,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:31:49,239 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:31:49,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431879940] [2021-01-06 17:31:49,239 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:31:49,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519669830] [2021-01-06 17:31:49,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:31:49,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-06 17:31:49,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199316930] [2021-01-06 17:31:49,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:31:49,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:31:49,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:31:49,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:31:49,241 INFO L87 Difference]: Start difference. First operand 114 states and 131 transitions. Second operand 8 states. [2021-01-06 17:31:49,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:31:49,556 INFO L93 Difference]: Finished difference Result 142 states and 160 transitions. [2021-01-06 17:31:49,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 17:31:49,556 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2021-01-06 17:31:49,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:31:49,558 INFO L225 Difference]: With dead ends: 142 [2021-01-06 17:31:49,558 INFO L226 Difference]: Without dead ends: 140 [2021-01-06 17:31:49,559 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-01-06 17:31:49,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-01-06 17:31:49,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 114. [2021-01-06 17:31:49,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2021-01-06 17:31:49,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 130 transitions. [2021-01-06 17:31:49,574 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 130 transitions. Word has length 31 [2021-01-06 17:31:49,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:31:49,574 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 130 transitions. [2021-01-06 17:31:49,574 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:31:49,575 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 130 transitions. [2021-01-06 17:31:49,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-01-06 17:31:49,580 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:31:49,580 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:31:49,793 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-01-06 17:31:49,794 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:31:49,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:31:49,795 INFO L82 PathProgramCache]: Analyzing trace with hash 155590347, now seen corresponding path program 2 times [2021-01-06 17:31:49,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:31:49,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350793028] [2021-01-06 17:31:49,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:31:49,806 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:31:49,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [516168325] [2021-01-06 17:31:49,807 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 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 17:31:49,866 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:31:49,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:31:49,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 48 conjunts are in the unsatisfiable core [2021-01-06 17:31:49,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:31:50,153 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:31:50,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350793028] [2021-01-06 17:31:50,153 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:31:50,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516168325] [2021-01-06 17:31:50,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:31:50,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-01-06 17:31:50,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639329705] [2021-01-06 17:31:50,155 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-06 17:31:50,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:31:50,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-06 17:31:50,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-01-06 17:31:50,157 INFO L87 Difference]: Start difference. First operand 114 states and 130 transitions. Second operand 11 states. [2021-01-06 17:31:50,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:31:50,685 INFO L93 Difference]: Finished difference Result 148 states and 166 transitions. [2021-01-06 17:31:50,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-06 17:31:50,685 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 31 [2021-01-06 17:31:50,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:31:50,686 INFO L225 Difference]: With dead ends: 148 [2021-01-06 17:31:50,687 INFO L226 Difference]: Without dead ends: 146 [2021-01-06 17:31:50,687 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2021-01-06 17:31:50,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-01-06 17:31:50,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 118. [2021-01-06 17:31:50,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2021-01-06 17:31:50,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 134 transitions. [2021-01-06 17:31:50,702 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 134 transitions. Word has length 31 [2021-01-06 17:31:50,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:31:50,702 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 134 transitions. [2021-01-06 17:31:50,702 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-01-06 17:31:50,703 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 134 transitions. [2021-01-06 17:31:50,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-01-06 17:31:50,703 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:31:50,703 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:31:50,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-01-06 17:31:50,917 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:31:50,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:31:50,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1663177194, now seen corresponding path program 2 times [2021-01-06 17:31:50,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:31:50,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985393314] [2021-01-06 17:31:50,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:31:50,929 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:31:50,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [927531892] [2021-01-06 17:31:50,930 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 17:31:50,986 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:31:50,986 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:31:50,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 44 conjunts are in the unsatisfiable core [2021-01-06 17:31:50,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:31:51,174 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:31:51,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985393314] [2021-01-06 17:31:51,175 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:31:51,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927531892] [2021-01-06 17:31:51,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:31:51,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-01-06 17:31:51,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88414654] [2021-01-06 17:31:51,176 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 17:31:51,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:31:51,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 17:31:51,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:31:51,177 INFO L87 Difference]: Start difference. First operand 118 states and 134 transitions. Second operand 9 states. [2021-01-06 17:31:51,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:31:51,447 INFO L93 Difference]: Finished difference Result 160 states and 180 transitions. [2021-01-06 17:31:51,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 17:31:51,447 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 33 [2021-01-06 17:31:51,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:31:51,449 INFO L225 Difference]: With dead ends: 160 [2021-01-06 17:31:51,449 INFO L226 Difference]: Without dead ends: 148 [2021-01-06 17:31:51,449 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-01-06 17:31:51,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-01-06 17:31:51,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 126. [2021-01-06 17:31:51,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2021-01-06 17:31:51,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 143 transitions. [2021-01-06 17:31:51,467 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 143 transitions. Word has length 33 [2021-01-06 17:31:51,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:31:51,467 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 143 transitions. [2021-01-06 17:31:51,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 17:31:51,467 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 143 transitions. [2021-01-06 17:31:51,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-01-06 17:31:51,468 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:31:51,468 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:31:51,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-01-06 17:31:51,682 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:31:51,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:31:51,683 INFO L82 PathProgramCache]: Analyzing trace with hash -1610721748, now seen corresponding path program 1 times [2021-01-06 17:31:51,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:31:51,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104722461] [2021-01-06 17:31:51,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:31:51,693 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:31:51,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1135484836] [2021-01-06 17:31:51,694 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 17:31:51,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:31:51,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 39 conjunts are in the unsatisfiable core [2021-01-06 17:31:51,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:31:51,896 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:31:51,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104722461] [2021-01-06 17:31:51,897 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:31:51,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135484836] [2021-01-06 17:31:51,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:31:51,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-06 17:31:51,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555177424] [2021-01-06 17:31:51,898 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:31:51,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:31:51,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:31:51,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:31:51,899 INFO L87 Difference]: Start difference. First operand 126 states and 143 transitions. Second operand 8 states. [2021-01-06 17:31:52,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:31:52,205 INFO L93 Difference]: Finished difference Result 159 states and 177 transitions. [2021-01-06 17:31:52,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 17:31:52,205 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2021-01-06 17:31:52,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:31:52,206 INFO L225 Difference]: With dead ends: 159 [2021-01-06 17:31:52,206 INFO L226 Difference]: Without dead ends: 147 [2021-01-06 17:31:52,207 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-01-06 17:31:52,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-01-06 17:31:52,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 119. [2021-01-06 17:31:52,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2021-01-06 17:31:52,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 134 transitions. [2021-01-06 17:31:52,223 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 134 transitions. Word has length 33 [2021-01-06 17:31:52,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:31:52,223 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 134 transitions. [2021-01-06 17:31:52,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:31:52,223 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 134 transitions. [2021-01-06 17:31:52,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-01-06 17:31:52,224 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:31:52,224 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:31:52,437 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:31:52,438 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:31:52,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:31:52,439 INFO L82 PathProgramCache]: Analyzing trace with hash 130855945, now seen corresponding path program 3 times [2021-01-06 17:31:52,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:31:52,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730530194] [2021-01-06 17:31:52,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:31:52,448 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:31:52,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [668296504] [2021-01-06 17:31:52,449 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 17:31:52,509 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-01-06 17:31:52,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:31:52,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 31 conjunts are in the unsatisfiable core [2021-01-06 17:31:52,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:31:52,800 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2021-01-06 17:31:52,820 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-01-06 17:31:52,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730530194] [2021-01-06 17:31:52,820 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:31:52,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668296504] [2021-01-06 17:31:52,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:31:52,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-01-06 17:31:52,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067275500] [2021-01-06 17:31:52,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-06 17:31:52,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:31:52,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-06 17:31:52,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-01-06 17:31:52,822 INFO L87 Difference]: Start difference. First operand 119 states and 134 transitions. Second operand 11 states. [2021-01-06 17:31:53,256 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2021-01-06 17:31:58,087 WARN L197 SmtUtils]: Spent 4.81 s on a formula simplification that was a NOOP. DAG size: 19 [2021-01-06 17:32:00,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:32:00,402 INFO L93 Difference]: Finished difference Result 172 states and 190 transitions. [2021-01-06 17:32:00,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-01-06 17:32:00,403 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 37 [2021-01-06 17:32:00,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:32:00,404 INFO L225 Difference]: With dead ends: 172 [2021-01-06 17:32:00,404 INFO L226 Difference]: Without dead ends: 162 [2021-01-06 17:32:00,405 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2021-01-06 17:32:00,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-01-06 17:32:00,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 130. [2021-01-06 17:32:00,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2021-01-06 17:32:00,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 149 transitions. [2021-01-06 17:32:00,425 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 149 transitions. Word has length 37 [2021-01-06 17:32:00,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:32:00,426 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 149 transitions. [2021-01-06 17:32:00,426 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-01-06 17:32:00,426 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 149 transitions. [2021-01-06 17:32:00,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-01-06 17:32:00,426 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:32:00,427 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:32:00,640 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-01-06 17:32:00,641 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:32:00,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:32:00,642 INFO L82 PathProgramCache]: Analyzing trace with hash -127249911, now seen corresponding path program 4 times [2021-01-06 17:32:00,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:32:00,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738194389] [2021-01-06 17:32:00,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:32:00,653 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:32:00,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [607332555] [2021-01-06 17:32:00,654 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:32:00,714 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-06 17:32:00,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:32:00,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 37 conjunts are in the unsatisfiable core [2021-01-06 17:32:00,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:32:00,893 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:32:00,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738194389] [2021-01-06 17:32:00,894 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:32:00,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607332555] [2021-01-06 17:32:00,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:32:00,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-01-06 17:32:00,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257860415] [2021-01-06 17:32:00,898 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 17:32:00,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:32:00,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 17:32:00,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:32:00,899 INFO L87 Difference]: Start difference. First operand 130 states and 149 transitions. Second operand 9 states. [2021-01-06 17:32:01,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:32:01,381 INFO L93 Difference]: Finished difference Result 162 states and 183 transitions. [2021-01-06 17:32:01,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-01-06 17:32:01,381 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2021-01-06 17:32:01,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:32:01,383 INFO L225 Difference]: With dead ends: 162 [2021-01-06 17:32:01,383 INFO L226 Difference]: Without dead ends: 158 [2021-01-06 17:32:01,384 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2021-01-06 17:32:01,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-01-06 17:32:01,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 142. [2021-01-06 17:32:01,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2021-01-06 17:32:01,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 162 transitions. [2021-01-06 17:32:01,407 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 162 transitions. Word has length 37 [2021-01-06 17:32:01,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:32:01,407 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 162 transitions. [2021-01-06 17:32:01,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 17:32:01,407 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 162 transitions. [2021-01-06 17:32:01,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-01-06 17:32:01,407 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:32:01,408 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:32:01,622 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-01-06 17:32:01,622 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:32:01,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:32:01,623 INFO L82 PathProgramCache]: Analyzing trace with hash -127309493, now seen corresponding path program 5 times [2021-01-06 17:32:01,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:32:01,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792151514] [2021-01-06 17:32:01,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:32:01,634 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:32:01,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1799460729] [2021-01-06 17:32:01,634 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:32:02,599 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-01-06 17:32:02,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:32:02,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 31 conjunts are in the unsatisfiable core [2021-01-06 17:32:02,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:32:02,746 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:32:02,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792151514] [2021-01-06 17:32:02,747 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:32:02,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799460729] [2021-01-06 17:32:02,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:32:02,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-06 17:32:02,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251849114] [2021-01-06 17:32:02,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:32:02,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:32:02,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:32:02,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:32:02,749 INFO L87 Difference]: Start difference. First operand 142 states and 162 transitions. Second operand 7 states. [2021-01-06 17:32:03,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:32:03,031 INFO L93 Difference]: Finished difference Result 162 states and 183 transitions. [2021-01-06 17:32:03,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-06 17:32:03,031 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2021-01-06 17:32:03,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:32:03,033 INFO L225 Difference]: With dead ends: 162 [2021-01-06 17:32:03,033 INFO L226 Difference]: Without dead ends: 152 [2021-01-06 17:32:03,034 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-01-06 17:32:03,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-01-06 17:32:03,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 142. [2021-01-06 17:32:03,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2021-01-06 17:32:03,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 162 transitions. [2021-01-06 17:32:03,058 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 162 transitions. Word has length 37 [2021-01-06 17:32:03,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:32:03,058 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 162 transitions. [2021-01-06 17:32:03,058 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:32:03,058 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 162 transitions. [2021-01-06 17:32:03,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-01-06 17:32:03,059 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:32:03,059 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:32:03,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-01-06 17:32:03,266 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:32:03,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:32:03,267 INFO L82 PathProgramCache]: Analyzing trace with hash 948563977, now seen corresponding path program 6 times [2021-01-06 17:32:03,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:32:03,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915315970] [2021-01-06 17:32:03,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:32:03,283 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:32:03,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [968432129] [2021-01-06 17:32:03,283 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:32:03,341 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-01-06 17:32:03,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:32:03,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 36 conjunts are in the unsatisfiable core [2021-01-06 17:32:03,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:32:03,531 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:32:03,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915315970] [2021-01-06 17:32:03,531 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:32:03,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968432129] [2021-01-06 17:32:03,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:32:03,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-01-06 17:32:03,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780793144] [2021-01-06 17:32:03,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 17:32:03,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:32:03,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 17:32:03,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:32:03,536 INFO L87 Difference]: Start difference. First operand 142 states and 162 transitions. Second operand 9 states. [2021-01-06 17:32:04,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:32:04,183 INFO L93 Difference]: Finished difference Result 170 states and 192 transitions. [2021-01-06 17:32:04,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-01-06 17:32:04,184 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2021-01-06 17:32:04,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:32:04,185 INFO L225 Difference]: With dead ends: 170 [2021-01-06 17:32:04,185 INFO L226 Difference]: Without dead ends: 166 [2021-01-06 17:32:04,186 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2021-01-06 17:32:04,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-01-06 17:32:04,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 146. [2021-01-06 17:32:04,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2021-01-06 17:32:04,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 167 transitions. [2021-01-06 17:32:04,209 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 167 transitions. Word has length 37 [2021-01-06 17:32:04,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:32:04,209 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 167 transitions. [2021-01-06 17:32:04,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 17:32:04,209 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 167 transitions. [2021-01-06 17:32:04,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-01-06 17:32:04,210 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:32:04,210 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:32:04,423 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:32:04,423 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:32:04,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:32:04,424 INFO L82 PathProgramCache]: Analyzing trace with hash 948504395, now seen corresponding path program 7 times [2021-01-06 17:32:04,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:32:04,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124081419] [2021-01-06 17:32:04,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:32:04,439 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:32:04,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1226683699] [2021-01-06 17:32:04,439 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:32:04,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:32:04,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 35 conjunts are in the unsatisfiable core [2021-01-06 17:32:04,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:32:04,669 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:32:04,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124081419] [2021-01-06 17:32:04,669 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:32:04,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226683699] [2021-01-06 17:32:04,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:32:04,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-01-06 17:32:04,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644103242] [2021-01-06 17:32:04,670 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 17:32:04,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:32:04,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 17:32:04,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:32:04,670 INFO L87 Difference]: Start difference. First operand 146 states and 167 transitions. Second operand 9 states. [2021-01-06 17:32:05,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:32:05,126 INFO L93 Difference]: Finished difference Result 166 states and 188 transitions. [2021-01-06 17:32:05,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-01-06 17:32:05,127 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2021-01-06 17:32:05,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:32:05,128 INFO L225 Difference]: With dead ends: 166 [2021-01-06 17:32:05,128 INFO L226 Difference]: Without dead ends: 156 [2021-01-06 17:32:05,128 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2021-01-06 17:32:05,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-01-06 17:32:05,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 138. [2021-01-06 17:32:05,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2021-01-06 17:32:05,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 158 transitions. [2021-01-06 17:32:05,149 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 158 transitions. Word has length 37 [2021-01-06 17:32:05,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:32:05,149 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 158 transitions. [2021-01-06 17:32:05,149 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 17:32:05,150 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 158 transitions. [2021-01-06 17:32:05,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-01-06 17:32:05,150 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:32:05,150 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:32:05,364 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:32:05,365 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:32:05,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:32:05,365 INFO L82 PathProgramCache]: Analyzing trace with hash 690398539, now seen corresponding path program 8 times [2021-01-06 17:32:05,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:32:05,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261403492] [2021-01-06 17:32:05,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:32:05,374 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:32:05,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1129099139] [2021-01-06 17:32:05,375 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:32:05,431 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:32:05,431 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:32:05,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 35 conjunts are in the unsatisfiable core [2021-01-06 17:32:05,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:32:05,585 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:32:05,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261403492] [2021-01-06 17:32:05,585 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:32:05,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129099139] [2021-01-06 17:32:05,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:32:05,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-01-06 17:32:05,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513224072] [2021-01-06 17:32:05,586 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 17:32:05,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:32:05,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 17:32:05,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:32:05,587 INFO L87 Difference]: Start difference. First operand 138 states and 158 transitions. Second operand 9 states. [2021-01-06 17:32:06,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:32:06,233 INFO L93 Difference]: Finished difference Result 166 states and 188 transitions. [2021-01-06 17:32:06,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-01-06 17:32:06,233 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2021-01-06 17:32:06,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:32:06,234 INFO L225 Difference]: With dead ends: 166 [2021-01-06 17:32:06,234 INFO L226 Difference]: Without dead ends: 162 [2021-01-06 17:32:06,235 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2021-01-06 17:32:06,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-01-06 17:32:06,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 142. [2021-01-06 17:32:06,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2021-01-06 17:32:06,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 163 transitions. [2021-01-06 17:32:06,256 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 163 transitions. Word has length 37 [2021-01-06 17:32:06,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:32:06,257 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 163 transitions. [2021-01-06 17:32:06,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 17:32:06,257 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 163 transitions. [2021-01-06 17:32:06,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-01-06 17:32:06,257 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:32:06,258 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:32:06,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-01-06 17:32:06,472 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:32:06,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:32:06,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1198667980, now seen corresponding path program 2 times [2021-01-06 17:32:06,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:32:06,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144525336] [2021-01-06 17:32:06,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:32:06,482 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:32:06,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2008983938] [2021-01-06 17:32:06,483 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:32:06,551 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:32:06,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:32:06,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 56 conjunts are in the unsatisfiable core [2021-01-06 17:32:06,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:32:08,856 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (* c_ULTIMATE.start_main_~s~0 c_ULTIMATE.start_main_~y~0))) (and (not (= c_ULTIMATE.start_main_~b~0 0)) (= c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~x~0) (= c_ULTIMATE.start_main_~r~0 0) (let ((.cse0 (= c_ULTIMATE.start_main_~b~0 (+ .cse1 (* c_ULTIMATE.start_main_~q~0 c_ULTIMATE.start_main_~x~0))))) (or (and (= 0 c_ULTIMATE.start___VERIFIER_assert_~cond) (not .cse0)) (and (= 1 c_ULTIMATE.start___VERIFIER_assert_~cond) .cse0))) (<= 0 c_ULTIMATE.start_main_~b~0) (<= 1 c_ULTIMATE.start_main_~x~0) (= (+ .cse1 (* c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~y~0)) (+ (* c_ULTIMATE.start_main_~p~0 c_ULTIMATE.start_main_~x~0) c_ULTIMATE.start_main_~b~0 c_ULTIMATE.start_main_~a~0)) (= c_ULTIMATE.start_main_~y~0 (+ (* 2 c_ULTIMATE.start_main_~a~0) c_ULTIMATE.start_main_~b~0)) (= (+ c_ULTIMATE.start_main_~q~0 (* 2 c_ULTIMATE.start_main_~p~0)) 0))) is different from false [2021-01-06 17:32:22,465 WARN L197 SmtUtils]: Spent 11.08 s on a formula simplification that was a NOOP. DAG size: 33 [2021-01-06 17:32:22,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144525336] [2021-01-06 17:32:22,476 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:32:22,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008983938] [2021-01-06 17:32:22,476 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: null [2021-01-06 17:32:22,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:32:22,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-01-06 17:32:22,476 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2021-01-06 17:32:22,476 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-01-06 17:32:22,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-01-06 17:32:22,728 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-01-06 17:32:22,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 05:32:22 BoogieIcfgContainer [2021-01-06 17:32:22,729 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 17:32:22,729 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 17:32:22,729 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 17:32:22,730 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 17:32:22,731 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:31:40" (3/4) ... [2021-01-06 17:32:22,736 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-01-06 17:32:22,736 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 17:32:22,737 INFO L168 Benchmark]: Toolchain (without parser) took 42742.20 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 125.7 MB in the beginning and 134.0 MB in the end (delta: -8.3 MB). Peak memory consumption was 22.8 MB. Max. memory is 8.0 GB. [2021-01-06 17:32:22,738 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 135.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 17:32:22,739 INFO L168 Benchmark]: CACSL2BoogieTranslator took 354.59 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 115.5 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-01-06 17:32:22,739 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.72 ms. Allocated memory is still 151.0 MB. Free memory was 115.4 MB in the beginning and 113.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 17:32:22,739 INFO L168 Benchmark]: Boogie Preprocessor took 28.16 ms. Allocated memory is still 151.0 MB. Free memory was 113.7 MB in the beginning and 112.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:32:22,740 INFO L168 Benchmark]: RCFGBuilder took 559.91 ms. Allocated memory is still 151.0 MB. Free memory was 112.5 MB in the beginning and 124.3 MB in the end (delta: -11.8 MB). Peak memory consumption was 10.4 MB. Max. memory is 8.0 GB. [2021-01-06 17:32:22,740 INFO L168 Benchmark]: TraceAbstraction took 41729.34 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 123.6 MB in the beginning and 134.4 MB in the end (delta: -10.8 MB). Peak memory consumption was 20.7 MB. Max. memory is 8.0 GB. [2021-01-06 17:32:22,740 INFO L168 Benchmark]: Witness Printer took 6.49 ms. Allocated memory is still 181.4 MB. Free memory was 134.4 MB in the beginning and 134.0 MB in the end (delta: 403.1 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 17:32:22,743 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 135.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 354.59 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 115.5 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 49.72 ms. Allocated memory is still 151.0 MB. Free memory was 115.4 MB in the beginning and 113.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 28.16 ms. Allocated memory is still 151.0 MB. Free memory was 113.7 MB in the beginning and 112.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 559.91 ms. Allocated memory is still 151.0 MB. Free memory was 112.5 MB in the beginning and 124.3 MB in the end (delta: -11.8 MB). Peak memory consumption was 10.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 41729.34 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 123.6 MB in the beginning and 134.4 MB in the end (delta: -10.8 MB). Peak memory consumption was 20.7 MB. Max. memory is 8.0 GB. * Witness Printer took 6.49 ms. Allocated memory is still 181.4 MB. Free memory was 134.4 MB in the beginning and 134.0 MB in the end (delta: 403.1 kB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L19] long long a, b, p, q, r, s; [L20] int x, y; [L21] x = __VERIFIER_nondet_int() [L8] COND FALSE !(!cond) [L23] y = __VERIFIER_nondet_int() [L8] COND FALSE !(!cond) [L8] COND FALSE !(!cond) [L8] COND FALSE !(!cond) [L28] a = x [L29] b = y [L30] p = 1 [L31] q = 0 [L32] r = 0 [L33] s = 1 [L35] COND TRUE 1 [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L40] COND FALSE !(!(a != b)) [L43] COND FALSE !(a > b) [L48] b = b - a [L49] q = q - p [L50] s = s - r [L35] COND TRUE 1 [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L40] COND FALSE !(!(a != b)) [L43] COND FALSE !(a > b) [L48] b = b - a [L49] q = q - p [L50] s = s - r [L35] COND TRUE 1 [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L40] COND FALSE !(!(a != b)) [L43] COND TRUE a > b [L44] a = a - b [L45] p = p - q [L46] r = r - s [L35] COND TRUE 1 [L11] COND FALSE !(!(cond)) [L11] COND TRUE !(cond) [L13] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 44 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 41.6s, OverallIterations: 22, TraceHistogramMax: 4, AutomataDifference: 14.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 712 SDtfs, 1785 SDslu, 2207 SDs, 0 SdLazy, 3240 SolverSat, 295 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 4.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 660 GetRequests, 417 SyntacticMatches, 1 SemanticMatches, 242 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 10.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=146occurred in iteration=19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 21 MinimizatonAttempts, 333 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 577 NumberOfCodeBlocks, 566 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 556 ConstructedInterpolants, 0 QuantifiedInterpolants, 217645 SizeOfPredicates, 209 NumberOfNonLiveVariables, 2350 ConjunctsInSsa, 636 ConjunctsInUnsatCore, 21 InterpolantComputations, 6 PerfectInterpolantSequences, 24/288 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...