/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/geo1-ll_valuebound100.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 17:38:58,335 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 17:38:58,337 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 17:38:58,376 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 17:38:58,376 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 17:38:58,378 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 17:38:58,379 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 17:38:58,381 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 17:38:58,383 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 17:38:58,385 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 17:38:58,386 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 17:38:58,387 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 17:38:58,388 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 17:38:58,389 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 17:38:58,390 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 17:38:58,391 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 17:38:58,401 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 17:38:58,403 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 17:38:58,405 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 17:38:58,407 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 17:38:58,409 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 17:38:58,410 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 17:38:58,411 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 17:38:58,412 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 17:38:58,415 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 17:38:58,419 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 17:38:58,420 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 17:38:58,421 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 17:38:58,422 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 17:38:58,423 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 17:38:58,423 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 17:38:58,424 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 17:38:58,424 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 17:38:58,424 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 17:38:58,425 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 17:38:58,426 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 17:38:58,427 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 17:38:58,453 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 17:38:58,453 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 17:38:58,455 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 17:38:58,455 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 17:38:58,455 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 17:38:58,456 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 17:38:58,456 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 17:38:58,456 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 17:38:58,456 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 17:38:58,456 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 17:38:58,457 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 17:38:58,457 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 17:38:58,457 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 17:38:58,457 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 17:38:58,457 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 17:38:58,458 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 17:38:58,458 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 17:38:58,458 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:38:58,458 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 17:38:58,458 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 17:38:58,459 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 17:38:58,459 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 17:38:58,459 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 17:38:58,459 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 17:38:58,459 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 17:38:58,459 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 17:38:58,827 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 17:38:58,853 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 17:38:58,856 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 17:38:58,858 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 17:38:58,858 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 17:38:58,859 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound100.c [2021-01-06 17:38:58,949 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/6909cffd2/55e88ca23b014ec8a013b832cd148d44/FLAGb26804a37 [2021-01-06 17:38:59,573 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 17:38:59,574 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound100.c [2021-01-06 17:38:59,586 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/6909cffd2/55e88ca23b014ec8a013b832cd148d44/FLAGb26804a37 [2021-01-06 17:38:59,606 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/6909cffd2/55e88ca23b014ec8a013b832cd148d44 [2021-01-06 17:38:59,609 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 17:38:59,611 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 17:38:59,613 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 17:38:59,613 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 17:38:59,617 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 17:38:59,618 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:38:59" (1/1) ... [2021-01-06 17:38:59,620 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19384a36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:38:59, skipping insertion in model container [2021-01-06 17:38:59,620 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:38:59" (1/1) ... [2021-01-06 17:38:59,628 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 17:38:59,645 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 17:38:59,801 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/geo1-ll_valuebound100.c[546,559] left hand side expression in assignment: lhs: VariableLHS[~z~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] 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[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] 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[~x~0,] [2021-01-06 17:38:59,819 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:38:59,830 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 17:38:59,844 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/geo1-ll_valuebound100.c[546,559] left hand side expression in assignment: lhs: VariableLHS[~z~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] 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[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] 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[~x~0,] [2021-01-06 17:38:59,852 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:38:59,868 INFO L208 MainTranslator]: Completed translation [2021-01-06 17:38:59,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:38:59 WrapperNode [2021-01-06 17:38:59,869 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 17:38:59,870 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 17:38:59,871 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 17:38:59,871 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 17:38:59,880 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:38:59" (1/1) ... [2021-01-06 17:38:59,888 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:38:59" (1/1) ... [2021-01-06 17:38:59,910 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 17:38:59,911 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 17:38:59,911 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 17:38:59,911 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 17:38:59,920 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:38:59" (1/1) ... [2021-01-06 17:38:59,921 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:38:59" (1/1) ... [2021-01-06 17:38:59,927 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:38:59" (1/1) ... [2021-01-06 17:38:59,927 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:38:59" (1/1) ... [2021-01-06 17:38:59,931 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:38:59" (1/1) ... [2021-01-06 17:38:59,936 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:38:59" (1/1) ... [2021-01-06 17:38:59,937 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:38:59" (1/1) ... [2021-01-06 17:38:59,940 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 17:38:59,941 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 17:38:59,941 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 17:38:59,941 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 17:38:59,942 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:38:59" (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 17:39:00,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 17:39:00,051 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 17:39:00,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 17:39:00,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 17:39:00,392 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 17:39:00,393 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-01-06 17:39:00,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:39:00 BoogieIcfgContainer [2021-01-06 17:39:00,395 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 17:39:00,397 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 17:39:00,397 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 17:39:00,400 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 17:39:00,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 05:38:59" (1/3) ... [2021-01-06 17:39:00,402 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1115ca4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:39:00, skipping insertion in model container [2021-01-06 17:39:00,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:38:59" (2/3) ... [2021-01-06 17:39:00,402 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1115ca4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:39:00, skipping insertion in model container [2021-01-06 17:39:00,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:39:00" (3/3) ... [2021-01-06 17:39:00,404 INFO L111 eAbstractionObserver]: Analyzing ICFG geo1-ll_valuebound100.c [2021-01-06 17:39:00,411 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 17:39:00,416 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-01-06 17:39:00,438 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-01-06 17:39:00,469 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 17:39:00,469 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 17:39:00,469 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 17:39:00,469 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 17:39:00,469 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 17:39:00,470 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 17:39:00,470 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 17:39:00,471 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 17:39:00,507 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2021-01-06 17:39:00,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-06 17:39:00,514 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:39:00,515 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:39:00,516 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:39:00,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:39:00,522 INFO L82 PathProgramCache]: Analyzing trace with hash -144177098, now seen corresponding path program 1 times [2021-01-06 17:39:00,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:39:00,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493893531] [2021-01-06 17:39:00,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:39:00,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:39:00,827 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 17:39:00,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493893531] [2021-01-06 17:39:00,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:39:00,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 17:39:00,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78684519] [2021-01-06 17:39:00,844 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 17:39:00,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:39:00,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 17:39:00,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 17:39:00,876 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2021-01-06 17:39:00,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:39:00,898 INFO L93 Difference]: Finished difference Result 43 states and 58 transitions. [2021-01-06 17:39:00,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 17:39:00,900 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2021-01-06 17:39:00,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:39:00,927 INFO L225 Difference]: With dead ends: 43 [2021-01-06 17:39:00,928 INFO L226 Difference]: Without dead ends: 19 [2021-01-06 17:39:00,931 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 17:39:00,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-01-06 17:39:00,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-01-06 17:39:00,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-01-06 17:39:00,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2021-01-06 17:39:00,972 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 13 [2021-01-06 17:39:00,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:39:00,973 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2021-01-06 17:39:00,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 17:39:00,973 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2021-01-06 17:39:00,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-06 17:39:00,974 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:39:00,975 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:39:00,976 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 17:39:00,976 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:39:00,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:39:00,981 INFO L82 PathProgramCache]: Analyzing trace with hash -1281167042, now seen corresponding path program 1 times [2021-01-06 17:39:00,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:39:00,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203356174] [2021-01-06 17:39:00,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:39:01,029 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:39:01,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1365805722] [2021-01-06 17:39:01,030 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 17:39:01,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:39:01,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 15 conjunts are in the unsatisfiable core [2021-01-06 17:39:01,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:39:01,313 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 17:39:01,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203356174] [2021-01-06 17:39:01,314 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:39:01,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365805722] [2021-01-06 17:39:01,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:39:01,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 17:39:01,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974229193] [2021-01-06 17:39:01,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:39:01,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:39:01,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:39:01,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:39:01,319 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 6 states. [2021-01-06 17:39:01,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:39:01,519 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2021-01-06 17:39:01,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:39:01,520 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2021-01-06 17:39:01,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:39:01,521 INFO L225 Difference]: With dead ends: 29 [2021-01-06 17:39:01,521 INFO L226 Difference]: Without dead ends: 23 [2021-01-06 17:39:01,523 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:39:01,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-01-06 17:39:01,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2021-01-06 17:39:01,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-01-06 17:39:01,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2021-01-06 17:39:01,538 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 13 [2021-01-06 17:39:01,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:39:01,539 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2021-01-06 17:39:01,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:39:01,540 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2021-01-06 17:39:01,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-01-06 17:39:01,541 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:39:01,542 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:39:01,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-01-06 17:39:01,748 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:39:01,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:39:01,749 INFO L82 PathProgramCache]: Analyzing trace with hash 2131965670, now seen corresponding path program 1 times [2021-01-06 17:39:01,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:39:01,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20182491] [2021-01-06 17:39:01,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:39:01,797 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:39:01,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1615984092] [2021-01-06 17:39:01,798 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 17:39:01,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:39:01,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 23 conjunts are in the unsatisfiable core [2021-01-06 17:39:01,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:39:02,039 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:39:02,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20182491] [2021-01-06 17:39:02,040 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:39:02,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615984092] [2021-01-06 17:39:02,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:39:02,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-06 17:39:02,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196753681] [2021-01-06 17:39:02,042 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:39:02,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:39:02,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:39:02,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:39:02,043 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 7 states. [2021-01-06 17:39:02,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:39:02,472 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2021-01-06 17:39:02,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:39:02,473 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2021-01-06 17:39:02,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:39:02,474 INFO L225 Difference]: With dead ends: 32 [2021-01-06 17:39:02,474 INFO L226 Difference]: Without dead ends: 26 [2021-01-06 17:39:02,475 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-01-06 17:39:02,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-01-06 17:39:02,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2021-01-06 17:39:02,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-01-06 17:39:02,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2021-01-06 17:39:02,481 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 16 [2021-01-06 17:39:02,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:39:02,481 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2021-01-06 17:39:02,482 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:39:02,482 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2021-01-06 17:39:02,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-01-06 17:39:02,483 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:39:02,483 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:39:02,699 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:39:02,700 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:39:02,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:39:02,701 INFO L82 PathProgramCache]: Analyzing trace with hash -582143938, now seen corresponding path program 2 times [2021-01-06 17:39:02,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:39:02,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031512265] [2021-01-06 17:39:02,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:39:02,721 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:39:02,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1743993722] [2021-01-06 17:39:02,722 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:39:02,820 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:39:02,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:39:02,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 35 conjunts are in the unsatisfiable core [2021-01-06 17:39:02,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:39:04,965 WARN L838 $PredicateComparison]: unable to prove that (and (<= 2 c_ULTIMATE.start_main_~c~0) (let ((.cse0 (= (+ (* c_ULTIMATE.start_main_~z~0 c_ULTIMATE.start_main_~x~0) 1) (+ c_ULTIMATE.start_main_~y~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))) (<= 1 c_ULTIMATE.start_main_~k~0) (= (* c_ULTIMATE.start_main_~z~0 c_ULTIMATE.start_main_~z~0) c_ULTIMATE.start_main_~y~0) (= c_ULTIMATE.start_main_~x~0 (+ c_ULTIMATE.start_main_~z~0 1))) is different from false [2021-01-06 17:39:11,054 WARN L197 SmtUtils]: Spent 4.05 s on a formula simplification that was a NOOP. DAG size: 18 [2021-01-06 17:39:11,124 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-01-06 17:39:11,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031512265] [2021-01-06 17:39:11,124 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:39:11,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743993722] [2021-01-06 17:39:11,125 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:39:11,125 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-01-06 17:39:11,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961348009] [2021-01-06 17:39:11,126 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-06 17:39:11,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:39:11,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-06 17:39:11,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=53, Unknown=2, NotChecked=14, Total=90 [2021-01-06 17:39:11,127 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 10 states. [2021-01-06 17:39:25,495 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (<= 1 c_ULTIMATE.start_main_~k~0))) (and (<= 2 c_ULTIMATE.start_main_~c~0) (let ((.cse0 (= (+ (* c_ULTIMATE.start_main_~z~0 c_ULTIMATE.start_main_~x~0) 1) (+ c_ULTIMATE.start_main_~y~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))) .cse1 (= (* c_ULTIMATE.start_main_~z~0 c_ULTIMATE.start_main_~z~0) c_ULTIMATE.start_main_~y~0) (or (and .cse1 (= c_ULTIMATE.start_assume_abort_if_not_~cond 1)) (and (= c_ULTIMATE.start_assume_abort_if_not_~cond 0) (< c_ULTIMATE.start_main_~k~0 1))) (= c_ULTIMATE.start_main_~x~0 (+ c_ULTIMATE.start_main_~z~0 1)))) is different from false [2021-01-06 17:39:31,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:39:31,217 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2021-01-06 17:39:31,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-01-06 17:39:31,218 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 19 [2021-01-06 17:39:31,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:39:31,219 INFO L225 Difference]: With dead ends: 32 [2021-01-06 17:39:31,219 INFO L226 Difference]: Without dead ends: 30 [2021-01-06 17:39:31,220 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=65, Invalid=179, Unknown=4, NotChecked=58, Total=306 [2021-01-06 17:39:31,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-01-06 17:39:31,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2021-01-06 17:39:31,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-01-06 17:39:31,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2021-01-06 17:39:31,227 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 19 [2021-01-06 17:39:31,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:39:31,227 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2021-01-06 17:39:31,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-06 17:39:31,227 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2021-01-06 17:39:31,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-01-06 17:39:31,228 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:39:31,228 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:39:31,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:39:31,430 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:39:31,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:39:31,431 INFO L82 PathProgramCache]: Analyzing trace with hash 432797915, now seen corresponding path program 1 times [2021-01-06 17:39:31,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:39:31,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932450260] [2021-01-06 17:39:31,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:39:31,448 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:39:31,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1673574194] [2021-01-06 17:39:31,449 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 17:39:31,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:39:31,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 21 conjunts are in the unsatisfiable core [2021-01-06 17:39:31,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:39:31,715 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:39:31,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932450260] [2021-01-06 17:39:31,717 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:39:31,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673574194] [2021-01-06 17:39:31,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:39:31,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-01-06 17:39:31,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832755875] [2021-01-06 17:39:31,719 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 17:39:31,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:39:31,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 17:39:31,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:39:31,725 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 9 states. [2021-01-06 17:39:36,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:39:36,075 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2021-01-06 17:39:36,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 17:39:36,076 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2021-01-06 17:39:36,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:39:36,077 INFO L225 Difference]: With dead ends: 27 [2021-01-06 17:39:36,077 INFO L226 Difference]: Without dead ends: 23 [2021-01-06 17:39:36,078 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2021-01-06 17:39:36,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-01-06 17:39:36,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-01-06 17:39:36,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-01-06 17:39:36,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2021-01-06 17:39:36,083 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 22 [2021-01-06 17:39:36,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:39:36,083 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2021-01-06 17:39:36,083 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 17:39:36,083 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2021-01-06 17:39:36,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-01-06 17:39:36,084 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:39:36,084 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:39:36,297 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:39:36,297 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:39:36,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:39:36,299 INFO L82 PathProgramCache]: Analyzing trace with hash 432838630, now seen corresponding path program 3 times [2021-01-06 17:39:36,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:39:36,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506291068] [2021-01-06 17:39:36,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:39:36,329 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:39:36,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [591660216] [2021-01-06 17:39:36,329 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 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 17:40:33,785 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-01-06 17:40:33,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:40:33,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 35 conjunts are in the unsatisfiable core [2021-01-06 17:40:33,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:40:38,086 WARN L197 SmtUtils]: Spent 4.03 s on a formula simplification that was a NOOP. DAG size: 19 [2021-01-06 17:40:46,714 WARN L197 SmtUtils]: Spent 4.32 s on a formula simplification that was a NOOP. DAG size: 27 [2021-01-06 17:40:46,744 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 17:40:46,758 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 17:41:04,093 WARN L197 SmtUtils]: Spent 10.37 s on a formula simplification that was a NOOP. DAG size: 34 [2021-01-06 17:41:10,162 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~z~0 Int) (ULTIMATE.start_main_~x~0 Int)) (let ((.cse1 (+ ULTIMATE.start_main_~x~0 (- 1)))) (let ((.cse0 (div .cse1 ULTIMATE.start_main_~z~0))) (and (not (= (+ (* .cse0 ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~z~0) ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~z~0) (+ (* .cse0 ULTIMATE.start_main_~z~0) (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) 1))) (<= ULTIMATE.start_main_~z~0 100) (= (mod .cse1 ULTIMATE.start_main_~z~0) 0) (= (mod (+ .cse0 (- 1)) ULTIMATE.start_main_~z~0) 0) (= (mod (+ (* ULTIMATE.start_main_~z~0 .cse0) (* .cse0 (- 1)) 1) ULTIMATE.start_main_~z~0) 0) (<= 1 ULTIMATE.start_main_~z~0))))) is different from false [2021-01-06 17:41:12,173 WARN L860 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~z~0 Int) (ULTIMATE.start_main_~x~0 Int)) (let ((.cse1 (+ ULTIMATE.start_main_~x~0 (- 1)))) (let ((.cse0 (div .cse1 ULTIMATE.start_main_~z~0))) (and (not (= (+ (* .cse0 ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~z~0) ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~z~0) (+ (* .cse0 ULTIMATE.start_main_~z~0) (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) 1))) (<= ULTIMATE.start_main_~z~0 100) (= (mod .cse1 ULTIMATE.start_main_~z~0) 0) (= (mod (+ .cse0 (- 1)) ULTIMATE.start_main_~z~0) 0) (= (mod (+ (* ULTIMATE.start_main_~z~0 .cse0) (* .cse0 (- 1)) 1) ULTIMATE.start_main_~z~0) 0) (<= 1 ULTIMATE.start_main_~z~0))))) is different from true [2021-01-06 17:41:12,177 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 3 refuted. 1 times theorem prover too weak. 3 trivial. 0 not checked. [2021-01-06 17:41:12,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506291068] [2021-01-06 17:41:12,177 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:41:12,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591660216] [2021-01-06 17:41:12,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:41:12,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-01-06 17:41:12,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160957206] [2021-01-06 17:41:12,178 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-06 17:41:12,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:41:12,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-06 17:41:12,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=76, Unknown=5, NotChecked=18, Total=132 [2021-01-06 17:41:12,180 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 12 states. [2021-01-06 17:41:21,077 WARN L197 SmtUtils]: Spent 8.16 s on a formula simplification. DAG size of input: 45 DAG size of output: 21 [2021-01-06 17:41:49,730 WARN L197 SmtUtils]: Spent 17.66 s on a formula simplification that was a NOOP. DAG size: 41 [2021-01-06 17:43:33,992 WARN L197 SmtUtils]: Spent 1.57 m on a formula simplification. DAG size of input: 48 DAG size of output: 47