/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_unwindbound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 17:29:22,334 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 17:29:22,337 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 17:29:22,374 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 17:29:22,375 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 17:29:22,376 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 17:29:22,378 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 17:29:22,381 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 17:29:22,391 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 17:29:22,392 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 17:29:22,393 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 17:29:22,395 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 17:29:22,395 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 17:29:22,397 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 17:29:22,398 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 17:29:22,399 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 17:29:22,400 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 17:29:22,401 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 17:29:22,403 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 17:29:22,406 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 17:29:22,408 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 17:29:22,409 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 17:29:22,411 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 17:29:22,411 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 17:29:22,415 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 17:29:22,425 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 17:29:22,426 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 17:29:22,427 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 17:29:22,428 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 17:29:22,457 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 17:29:22,458 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 17:29:22,459 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 17:29:22,460 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 17:29:22,460 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 17:29:22,460 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 17:29:22,460 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 17:29:22,461 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 17:29:22,461 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 17:29:22,461 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 17:29:22,461 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 17:29:22,461 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 17:29:22,462 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 17:29:22,462 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 17:29:22,462 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 17:29:22,462 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 17:29:22,463 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 17:29:22,463 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:29:22,463 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 17:29:22,463 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 17:29:22,463 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 17:29:22,464 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 17:29:22,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 17:29:22,464 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 17:29:22,464 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 17:29:22,464 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 17:29:22,864 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 17:29:22,891 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 17:29:22,894 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 17:29:22,895 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 17:29:22,896 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 17:29:22,897 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound1.c [2021-01-06 17:29:22,969 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/2f8a25eb7/31ed37c0e3f44b099cddb113ce83a8d5/FLAGe5e84b736 [2021-01-06 17:29:23,657 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 17:29:23,658 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound1.c [2021-01-06 17:29:23,667 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/2f8a25eb7/31ed37c0e3f44b099cddb113ce83a8d5/FLAGe5e84b736 [2021-01-06 17:29:23,992 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/2f8a25eb7/31ed37c0e3f44b099cddb113ce83a8d5 [2021-01-06 17:29:23,996 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 17:29:24,002 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 17:29:24,004 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 17:29:24,004 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 17:29:24,011 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 17:29:24,012 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:29:23" (1/1) ... [2021-01-06 17:29:24,014 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27f52309 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:29:24, skipping insertion in model container [2021-01-06 17:29:24,014 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:29:23" (1/1) ... [2021-01-06 17:29:24,023 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 17:29:24,040 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 17:29:24,197 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_unwindbound1.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 17:29:24,221 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:29:24,231 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 17:29:24,245 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_unwindbound1.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 17:29:24,255 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:29:24,270 INFO L208 MainTranslator]: Completed translation [2021-01-06 17:29:24,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:29:24 WrapperNode [2021-01-06 17:29:24,271 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 17:29:24,272 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 17:29:24,272 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 17:29:24,273 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 17:29:24,281 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:29:24" (1/1) ... [2021-01-06 17:29:24,290 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:29:24" (1/1) ... [2021-01-06 17:29:24,315 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 17:29:24,316 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 17:29:24,316 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 17:29:24,316 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 17:29:24,326 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:29:24" (1/1) ... [2021-01-06 17:29:24,327 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:29:24" (1/1) ... [2021-01-06 17:29:24,329 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:29:24" (1/1) ... [2021-01-06 17:29:24,329 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:29:24" (1/1) ... [2021-01-06 17:29:24,334 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:29:24" (1/1) ... [2021-01-06 17:29:24,339 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:29:24" (1/1) ... [2021-01-06 17:29:24,344 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:29:24" (1/1) ... [2021-01-06 17:29:24,348 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 17:29:24,349 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 17:29:24,349 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 17:29:24,349 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 17:29:24,352 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:29:24" (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 17:29:24,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 17:29:24,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 17:29:24,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 17:29:24,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 17:29:24,822 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 17:29:24,825 INFO L299 CfgBuilder]: Removed 23 assume(true) statements. [2021-01-06 17:29:24,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:29:24 BoogieIcfgContainer [2021-01-06 17:29:24,828 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 17:29:24,832 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 17:29:24,833 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 17:29:24,839 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 17:29:24,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 05:29:23" (1/3) ... [2021-01-06 17:29:24,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e708613 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:29:24, skipping insertion in model container [2021-01-06 17:29:24,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:29:24" (2/3) ... [2021-01-06 17:29:24,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e708613 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:29:24, skipping insertion in model container [2021-01-06 17:29:24,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:29:24" (3/3) ... [2021-01-06 17:29:24,844 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd-ll_unwindbound1.c [2021-01-06 17:29:24,851 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 17:29:24,857 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2021-01-06 17:29:24,879 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-01-06 17:29:24,909 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 17:29:24,910 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 17:29:24,910 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 17:29:24,910 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 17:29:24,910 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 17:29:24,910 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 17:29:24,911 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 17:29:24,911 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 17:29:24,931 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2021-01-06 17:29:24,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 17:29:24,943 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:29:24,944 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:29:24,948 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 17:29:24,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:29:24,968 INFO L82 PathProgramCache]: Analyzing trace with hash -1236199694, now seen corresponding path program 1 times [2021-01-06 17:29:24,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:29:24,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78067452] [2021-01-06 17:29:24,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:29:25,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:29:25,331 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 17:29:25,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78067452] [2021-01-06 17:29:25,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:29:25,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 17:29:25,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316460058] [2021-01-06 17:29:25,342 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 17:29:25,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:29:25,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 17:29:25,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 17:29:25,371 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2021-01-06 17:29:25,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:29:25,416 INFO L93 Difference]: Finished difference Result 79 states and 102 transitions. [2021-01-06 17:29:25,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 17:29:25,418 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2021-01-06 17:29:25,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:29:25,444 INFO L225 Difference]: With dead ends: 79 [2021-01-06 17:29:25,447 INFO L226 Difference]: Without dead ends: 37 [2021-01-06 17:29:25,455 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 17:29:25,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-01-06 17:29:25,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-01-06 17:29:25,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2021-01-06 17:29:25,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2021-01-06 17:29:25,497 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 10 [2021-01-06 17:29:25,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:29:25,497 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2021-01-06 17:29:25,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 17:29:25,498 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2021-01-06 17:29:25,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 17:29:25,498 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:29:25,498 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:29:25,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 17:29:25,499 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 17:29:25,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:29:25,500 INFO L82 PathProgramCache]: Analyzing trace with hash -1988288018, now seen corresponding path program 1 times [2021-01-06 17:29:25,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:29:25,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451965006] [2021-01-06 17:29:25,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:29:25,522 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:29:25,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1433958186] [2021-01-06 17:29:25,523 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 17:29:25,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:29:25,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 17 conjunts are in the unsatisfiable core [2021-01-06 17:29:25,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:29:25,710 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 17:29:25,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451965006] [2021-01-06 17:29:25,711 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:29:25,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433958186] [2021-01-06 17:29:25,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:29:25,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 17:29:25,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078743585] [2021-01-06 17:29:25,714 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:29:25,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:29:25,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:29:25,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:29:25,716 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 5 states. [2021-01-06 17:29:25,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:29:25,852 INFO L93 Difference]: Finished difference Result 68 states and 72 transitions. [2021-01-06 17:29:25,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 17:29:25,852 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2021-01-06 17:29:25,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:29:25,854 INFO L225 Difference]: With dead ends: 68 [2021-01-06 17:29:25,854 INFO L226 Difference]: Without dead ends: 64 [2021-01-06 17:29:25,856 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 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 17:29:25,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-01-06 17:29:25,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 52. [2021-01-06 17:29:25,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2021-01-06 17:29:25,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 61 transitions. [2021-01-06 17:29:25,869 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 61 transitions. Word has length 10 [2021-01-06 17:29:25,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:29:25,869 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 61 transitions. [2021-01-06 17:29:25,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:29:25,870 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 61 transitions. [2021-01-06 17:29:25,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-06 17:29:25,870 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:29:25,870 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:29:26,085 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-01-06 17:29:26,086 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 17:29:26,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:29:26,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1507402239, now seen corresponding path program 1 times [2021-01-06 17:29:26,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:29:26,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690163737] [2021-01-06 17:29:26,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:29:26,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:29:26,143 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 17:29:26,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690163737] [2021-01-06 17:29:26,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:29:26,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 17:29:26,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116391149] [2021-01-06 17:29:26,145 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 17:29:26,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:29:26,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 17:29:26,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 17:29:26,146 INFO L87 Difference]: Start difference. First operand 52 states and 61 transitions. Second operand 4 states. [2021-01-06 17:29:26,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:29:26,167 INFO L93 Difference]: Finished difference Result 68 states and 77 transitions. [2021-01-06 17:29:26,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 17:29:26,167 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2021-01-06 17:29:26,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:29:26,169 INFO L225 Difference]: With dead ends: 68 [2021-01-06 17:29:26,169 INFO L226 Difference]: Without dead ends: 54 [2021-01-06 17:29:26,170 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 17:29:26,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-01-06 17:29:26,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2021-01-06 17:29:26,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2021-01-06 17:29:26,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2021-01-06 17:29:26,180 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 11 [2021-01-06 17:29:26,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:29:26,181 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2021-01-06 17:29:26,181 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 17:29:26,181 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2021-01-06 17:29:26,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-01-06 17:29:26,181 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:29:26,182 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:29:26,182 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 17:29:26,182 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 17:29:26,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:29:26,183 INFO L82 PathProgramCache]: Analyzing trace with hash 515817425, now seen corresponding path program 1 times [2021-01-06 17:29:26,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:29:26,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508559600] [2021-01-06 17:29:26,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:29:26,198 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:29:26,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1389307093] [2021-01-06 17:29:26,199 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 17:29:26,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:29:26,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-06 17:29:26,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:29:26,423 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 17:29:26,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508559600] [2021-01-06 17:29:26,424 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:29:26,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389307093] [2021-01-06 17:29:26,424 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:29:26,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-06 17:29:26,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870087566] [2021-01-06 17:29:26,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:29:26,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:29:26,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:29:26,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:29:26,430 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand 8 states. [2021-01-06 17:29:26,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:29:26,718 INFO L93 Difference]: Finished difference Result 98 states and 115 transitions. [2021-01-06 17:29:26,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:29:26,718 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2021-01-06 17:29:26,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:29:26,721 INFO L225 Difference]: With dead ends: 98 [2021-01-06 17:29:26,722 INFO L226 Difference]: Without dead ends: 96 [2021-01-06 17:29:26,722 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-01-06 17:29:26,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-01-06 17:29:26,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 70. [2021-01-06 17:29:26,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2021-01-06 17:29:26,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 87 transitions. [2021-01-06 17:29:26,740 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 87 transitions. Word has length 12 [2021-01-06 17:29:26,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:29:26,740 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 87 transitions. [2021-01-06 17:29:26,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:29:26,741 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 87 transitions. [2021-01-06 17:29:26,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 17:29:26,741 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:29:26,741 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:29:26,956 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:29:26,958 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 17:29:26,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:29:26,960 INFO L82 PathProgramCache]: Analyzing trace with hash 1779462740, now seen corresponding path program 1 times [2021-01-06 17:29:26,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:29:26,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130404319] [2021-01-06 17:29:26,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:29:26,985 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:29:26,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [505616988] [2021-01-06 17:29:26,988 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 17:29:27,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:29:27,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 17 conjunts are in the unsatisfiable core [2021-01-06 17:29:27,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:29:27,112 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 17:29:27,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130404319] [2021-01-06 17:29:27,113 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:29:27,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505616988] [2021-01-06 17:29:27,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:29:27,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 17:29:27,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977028077] [2021-01-06 17:29:27,114 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:29:27,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:29:27,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:29:27,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:29:27,116 INFO L87 Difference]: Start difference. First operand 70 states and 87 transitions. Second operand 6 states. [2021-01-06 17:29:27,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:29:27,251 INFO L93 Difference]: Finished difference Result 87 states and 101 transitions. [2021-01-06 17:29:27,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:29:27,252 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2021-01-06 17:29:27,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:29:27,253 INFO L225 Difference]: With dead ends: 87 [2021-01-06 17:29:27,253 INFO L226 Difference]: Without dead ends: 79 [2021-01-06 17:29:27,254 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:29:27,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-01-06 17:29:27,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 68. [2021-01-06 17:29:27,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2021-01-06 17:29:27,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 82 transitions. [2021-01-06 17:29:27,264 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 82 transitions. Word has length 14 [2021-01-06 17:29:27,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:29:27,264 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 82 transitions. [2021-01-06 17:29:27,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:29:27,265 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 82 transitions. [2021-01-06 17:29:27,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-01-06 17:29:27,265 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:29:27,265 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 17:29:27,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:29:27,480 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 17:29:27,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:29:27,481 INFO L82 PathProgramCache]: Analyzing trace with hash -801918668, now seen corresponding path program 1 times [2021-01-06 17:29:27,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:29:27,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690826069] [2021-01-06 17:29:27,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:29:27,495 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:29:27,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1980668959] [2021-01-06 17:29:27,496 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 17:29:27,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:29:27,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-01-06 17:29:27,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:29:27,572 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 17:29:27,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690826069] [2021-01-06 17:29:27,572 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:29:27,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980668959] [2021-01-06 17:29:27,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:29:27,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 17:29:27,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812194248] [2021-01-06 17:29:27,574 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 17:29:27,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:29:27,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 17:29:27,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 17:29:27,575 INFO L87 Difference]: Start difference. First operand 68 states and 82 transitions. Second operand 4 states. [2021-01-06 17:29:27,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:29:27,630 INFO L93 Difference]: Finished difference Result 88 states and 102 transitions. [2021-01-06 17:29:27,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 17:29:27,630 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2021-01-06 17:29:27,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:29:27,631 INFO L225 Difference]: With dead ends: 88 [2021-01-06 17:29:27,631 INFO L226 Difference]: Without dead ends: 86 [2021-01-06 17:29:27,632 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 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 17:29:27,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-01-06 17:29:27,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 72. [2021-01-06 17:29:27,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2021-01-06 17:29:27,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 86 transitions. [2021-01-06 17:29:27,641 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 86 transitions. Word has length 17 [2021-01-06 17:29:27,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:29:27,642 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 86 transitions. [2021-01-06 17:29:27,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 17:29:27,642 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 86 transitions. [2021-01-06 17:29:27,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-01-06 17:29:27,643 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:29:27,643 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:29:27,858 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:29:27,859 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 17:29:27,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:29:27,860 INFO L82 PathProgramCache]: Analyzing trace with hash -1844536457, now seen corresponding path program 1 times [2021-01-06 17:29:27,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:29:27,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100570276] [2021-01-06 17:29:27,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:29:27,873 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:29:27,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1209498264] [2021-01-06 17:29:27,874 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 17:29:27,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:29:27,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 18 conjunts are in the unsatisfiable core [2021-01-06 17:29:27,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:29:28,066 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 17:29:28,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100570276] [2021-01-06 17:29:28,067 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:29:28,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209498264] [2021-01-06 17:29:28,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:29:28,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-06 17:29:28,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102616115] [2021-01-06 17:29:28,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:29:28,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:29:28,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:29:28,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:29:28,069 INFO L87 Difference]: Start difference. First operand 72 states and 86 transitions. Second operand 8 states. [2021-01-06 17:29:28,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:29:28,366 INFO L93 Difference]: Finished difference Result 111 states and 124 transitions. [2021-01-06 17:29:28,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 17:29:28,367 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2021-01-06 17:29:28,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:29:28,368 INFO L225 Difference]: With dead ends: 111 [2021-01-06 17:29:28,368 INFO L226 Difference]: Without dead ends: 103 [2021-01-06 17:29:28,368 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 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 17:29:28,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-01-06 17:29:28,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 64. [2021-01-06 17:29:28,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2021-01-06 17:29:28,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 72 transitions. [2021-01-06 17:29:28,379 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 72 transitions. Word has length 19 [2021-01-06 17:29:28,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:29:28,379 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 72 transitions. [2021-01-06 17:29:28,379 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:29:28,379 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 72 transitions. [2021-01-06 17:29:28,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-01-06 17:29:28,380 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:29:28,380 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:29:28,594 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-01-06 17:29:28,595 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 17:29:28,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:29:28,596 INFO L82 PathProgramCache]: Analyzing trace with hash -1793740814, now seen corresponding path program 1 times [2021-01-06 17:29:28,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:29:28,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95159153] [2021-01-06 17:29:28,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:29:28,611 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:29:28,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1841345110] [2021-01-06 17:29:28,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 17:29:28,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:29:28,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 5 conjunts are in the unsatisfiable core [2021-01-06 17:29:28,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:29:28,742 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:29:28,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95159153] [2021-01-06 17:29:28,742 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:29:28,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841345110] [2021-01-06 17:29:28,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:29:28,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-01-06 17:29:28,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362266224] [2021-01-06 17:29:28,743 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:29:28,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:29:28,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:29:28,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:29:28,745 INFO L87 Difference]: Start difference. First operand 64 states and 72 transitions. Second operand 5 states. [2021-01-06 17:29:28,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:29:28,771 INFO L93 Difference]: Finished difference Result 92 states and 103 transitions. [2021-01-06 17:29:28,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 17:29:28,772 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2021-01-06 17:29:28,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:29:28,772 INFO L225 Difference]: With dead ends: 92 [2021-01-06 17:29:28,772 INFO L226 Difference]: Without dead ends: 39 [2021-01-06 17:29:28,773 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:29:28,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-01-06 17:29:28,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-01-06 17:29:28,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2021-01-06 17:29:28,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2021-01-06 17:29:28,780 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 19 [2021-01-06 17:29:28,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:29:28,780 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2021-01-06 17:29:28,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:29:28,781 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2021-01-06 17:29:28,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-01-06 17:29:28,781 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:29:28,781 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:29:28,995 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:29:28,996 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 17:29:28,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:29:28,997 INFO L82 PathProgramCache]: Analyzing trace with hash 171335487, now seen corresponding path program 1 times [2021-01-06 17:29:28,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:29:28,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121196805] [2021-01-06 17:29:28,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:29:29,020 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:29:29,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1503833537] [2021-01-06 17:29:29,021 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 17:29:29,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-06 17:29:29,085 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-06 17:29:29,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-06 17:29:29,102 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-06 17:29:29,147 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-01-06 17:29:29,147 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-01-06 17:29:29,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:29:29,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 05:29:29 BoogieIcfgContainer [2021-01-06 17:29:29,392 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 17:29:29,393 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 17:29:29,393 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 17:29:29,393 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 17:29:29,394 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:29:24" (3/4) ... [2021-01-06 17:29:29,396 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-01-06 17:29:29,453 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/nla-digbench-scaling/egcd-ll_unwindbound1.c-witness.graphml [2021-01-06 17:29:29,453 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 17:29:29,456 INFO L168 Benchmark]: Toolchain (without parser) took 5456.49 ms. Allocated memory was 174.1 MB in the beginning and 213.9 MB in the end (delta: 39.8 MB). Free memory was 149.0 MB in the beginning and 144.4 MB in the end (delta: 4.6 MB). Peak memory consumption was 45.6 MB. Max. memory is 8.0 GB. [2021-01-06 17:29:29,456 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 174.1 MB. Free memory is still 145.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 17:29:29,457 INFO L168 Benchmark]: CACSL2BoogieTranslator took 267.48 ms. Allocated memory is still 174.1 MB. Free memory was 148.8 MB in the beginning and 138.8 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-01-06 17:29:29,458 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.07 ms. Allocated memory is still 174.1 MB. Free memory was 138.6 MB in the beginning and 137.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:29:29,459 INFO L168 Benchmark]: Boogie Preprocessor took 31.90 ms. Allocated memory is still 174.1 MB. Free memory was 137.1 MB in the beginning and 135.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 17:29:29,459 INFO L168 Benchmark]: RCFGBuilder took 478.98 ms. Allocated memory is still 174.1 MB. Free memory was 135.8 MB in the beginning and 154.8 MB in the end (delta: -19.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:29:29,460 INFO L168 Benchmark]: TraceAbstraction took 4559.88 ms. Allocated memory was 174.1 MB in the beginning and 213.9 MB in the end (delta: 39.8 MB). Free memory was 154.2 MB in the beginning and 147.0 MB in the end (delta: 7.2 MB). Peak memory consumption was 47.6 MB. Max. memory is 8.0 GB. [2021-01-06 17:29:29,461 INFO L168 Benchmark]: Witness Printer took 60.83 ms. Allocated memory is still 213.9 MB. Free memory was 147.0 MB in the beginning and 144.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-01-06 17:29:29,469 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 174.1 MB. Free memory is still 145.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 267.48 ms. Allocated memory is still 174.1 MB. Free memory was 148.8 MB in the beginning and 138.8 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 43.07 ms. Allocated memory is still 174.1 MB. Free memory was 138.6 MB in the beginning and 137.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 31.90 ms. Allocated memory is still 174.1 MB. Free memory was 137.1 MB in the beginning and 135.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 478.98 ms. Allocated memory is still 174.1 MB. Free memory was 135.8 MB in the beginning and 154.8 MB in the end (delta: -19.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4559.88 ms. Allocated memory was 174.1 MB in the beginning and 213.9 MB in the end (delta: 39.8 MB). Free memory was 154.2 MB in the beginning and 147.0 MB in the end (delta: 7.2 MB). Peak memory consumption was 47.6 MB. Max. memory is 8.0 GB. * Witness Printer took 60.83 ms. Allocated memory is still 213.9 MB. Free memory was 147.0 MB in the beginning and 144.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L18] int counter = 0; VAL [counter=0] [L20] long long a, b, p, q, r, s; [L21] int x, y; [L22] x = __VERIFIER_nondet_int() [L23] y = __VERIFIER_nondet_int() [L8] COND FALSE !(!cond) VAL [counter=0] [L8] COND FALSE !(!cond) VAL [counter=0] [L27] a = x [L28] b = y [L29] p = 1 [L30] q = 0 [L31] r = 0 [L32] s = 1 VAL [counter=0] [L34] EXPR counter++ VAL [counter=1] [L34] COND TRUE counter++<1 [L11] COND FALSE !(!(cond)) VAL [counter=1] [L11] COND FALSE !(!(cond)) VAL [counter=1] [L11] COND FALSE !(!(cond)) VAL [counter=1] [L39] COND FALSE !(!(a != b)) VAL [counter=1] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [counter=1] [L34] EXPR counter++ VAL [counter=2] [L34] COND FALSE !(counter++<1) [L11] COND TRUE !(cond) VAL [counter=2] [L13] reach_error() VAL [counter=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 41 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.4s, OverallIterations: 9, TraceHistogramMax: 2, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 266 SDtfs, 490 SDslu, 424 SDs, 0 SdLazy, 396 SolverSat, 39 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 103 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=72occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 102 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 132 NumberOfCodeBlocks, 132 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 104 ConstructedInterpolants, 0 QuantifiedInterpolants, 6344 SizeOfPredicates, 41 NumberOfNonLiveVariables, 532 ConjunctsInSsa, 87 ConjunctsInUnsatCore, 8 InterpolantComputations, 7 PerfectInterpolantSequences, 2/3 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...