/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_FUNCTIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 --traceabstraction.trace.refinement.strategy CAMEL_SMT_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/nla-digbench/geo1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-19 23:50:59,389 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-19 23:50:59,392 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-19 23:50:59,406 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-19 23:50:59,407 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-19 23:50:59,408 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-19 23:50:59,409 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-19 23:50:59,420 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-19 23:50:59,422 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-19 23:50:59,426 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-19 23:50:59,428 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-19 23:50:59,429 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-19 23:50:59,431 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-19 23:50:59,435 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-19 23:50:59,436 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-19 23:50:59,437 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-19 23:50:59,439 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-19 23:50:59,444 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-19 23:50:59,446 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-19 23:50:59,448 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-19 23:50:59,452 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-19 23:50:59,455 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-19 23:50:59,457 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-19 23:50:59,459 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-19 23:50:59,464 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-19 23:50:59,479 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-19 23:50:59,480 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-19 23:50:59,482 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-19 23:50:59,483 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-19 23:50:59,506 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-19 23:50:59,506 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-19 23:50:59,508 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-19 23:50:59,509 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-19 23:50:59,509 INFO L138 SettingsManager]: * Use SBE=true [2020-07-19 23:50:59,509 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-19 23:50:59,509 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-19 23:50:59,510 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-19 23:50:59,510 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-19 23:50:59,510 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-19 23:50:59,511 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-19 23:50:59,512 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-19 23:50:59,512 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-19 23:50:59,512 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-19 23:50:59,512 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-19 23:50:59,513 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-19 23:50:59,513 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-19 23:50:59,513 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-19 23:50:59,513 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-19 23:50:59,513 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-19 23:50:59,514 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-19 23:50:59,514 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-19 23:50:59,514 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-19 23:50:59,514 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-19 23:50:59,514 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-19 23:50:59,515 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-19 23:50:59,515 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-19 23:50:59,515 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-19 23:50:59,515 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-19 23:50:59,515 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_FUNCTIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_SMT_AM [2020-07-19 23:50:59,815 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-19 23:50:59,828 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-19 23:50:59,832 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-19 23:50:59,834 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-19 23:50:59,834 INFO L275 PluginConnector]: CDTParser initialized [2020-07-19 23:50:59,835 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/geo1.c [2020-07-19 23:50:59,912 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23359454c/cf36510f01374f08b335fa8511170244/FLAG57fd6b70b [2020-07-19 23:51:00,416 INFO L306 CDTParser]: Found 1 translation units. [2020-07-19 23:51:00,419 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/geo1.c [2020-07-19 23:51:00,427 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23359454c/cf36510f01374f08b335fa8511170244/FLAG57fd6b70b [2020-07-19 23:51:00,741 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23359454c/cf36510f01374f08b335fa8511170244 [2020-07-19 23:51:00,753 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-19 23:51:00,757 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-19 23:51:00,758 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-19 23:51:00,758 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-19 23:51:00,762 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-19 23:51:00,763 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:51:00" (1/1) ... [2020-07-19 23:51:00,766 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c8a586e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:51:00, skipping insertion in model container [2020-07-19 23:51:00,766 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:51:00" (1/1) ... [2020-07-19 23:51:00,774 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-19 23:51:00,793 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-19 23:51:00,970 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 23:51:00,974 INFO L203 MainTranslator]: Completed pre-run [2020-07-19 23:51:00,994 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 23:51:01,009 INFO L208 MainTranslator]: Completed translation [2020-07-19 23:51:01,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:51:01 WrapperNode [2020-07-19 23:51:01,010 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-19 23:51:01,011 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-19 23:51:01,011 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-19 23:51:01,011 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-19 23:51:01,024 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:51:01" (1/1) ... [2020-07-19 23:51:01,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:51:01" (1/1) ... [2020-07-19 23:51:01,029 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:51:01" (1/1) ... [2020-07-19 23:51:01,030 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:51:01" (1/1) ... [2020-07-19 23:51:01,033 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:51:01" (1/1) ... [2020-07-19 23:51:01,038 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:51:01" (1/1) ... [2020-07-19 23:51:01,039 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:51:01" (1/1) ... [2020-07-19 23:51:01,133 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-19 23:51:01,133 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-19 23:51:01,133 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-19 23:51:01,133 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-19 23:51:01,134 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:51:01" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-19 23:51:01,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-19 23:51:01,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-19 23:51:01,205 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-19 23:51:01,205 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-19 23:51:01,205 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-19 23:51:01,205 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-19 23:51:01,206 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-19 23:51:01,206 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-19 23:51:01,206 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-19 23:51:01,206 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-19 23:51:01,206 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-19 23:51:01,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-19 23:51:01,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-19 23:51:01,414 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-19 23:51:01,414 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-19 23:51:01,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:51:01 BoogieIcfgContainer [2020-07-19 23:51:01,418 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-19 23:51:01,420 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-19 23:51:01,420 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-19 23:51:01,423 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-19 23:51:01,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 11:51:00" (1/3) ... [2020-07-19 23:51:01,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7de5d1b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:51:01, skipping insertion in model container [2020-07-19 23:51:01,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:51:01" (2/3) ... [2020-07-19 23:51:01,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7de5d1b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:51:01, skipping insertion in model container [2020-07-19 23:51:01,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:51:01" (3/3) ... [2020-07-19 23:51:01,428 INFO L109 eAbstractionObserver]: Analyzing ICFG geo1.c [2020-07-19 23:51:01,439 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-19 23:51:01,447 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-19 23:51:01,461 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-19 23:51:01,483 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-19 23:51:01,483 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-19 23:51:01,483 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-19 23:51:01,483 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-19 23:51:01,483 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-19 23:51:01,484 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-19 23:51:01,484 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-19 23:51:01,484 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-19 23:51:01,500 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-07-19 23:51:01,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-19 23:51:01,507 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:51:01,508 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:51:01,508 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:51:01,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:51:01,514 INFO L82 PathProgramCache]: Analyzing trace with hash -1923958992, now seen corresponding path program 1 times [2020-07-19 23:51:01,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:51:01,522 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776570231] [2020-07-19 23:51:01,523 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5f807c13 [2020-07-19 23:51:01,603 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-19 23:51:01,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1820148129] [2020-07-19 23:51:01,604 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4e9fdf0c No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:51:01,690 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4e9fdf0c issued 3 check-sat command(s) [2020-07-19 23:51:01,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:51:01,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-19 23:51:01,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:51:01,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:51:01,820 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776570231] [2020-07-19 23:51:01,820 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-19 23:51:01,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820148129] [2020-07-19 23:51:01,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 23:51:01,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-19 23:51:01,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224127299] [2020-07-19 23:51:01,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-19 23:51:01,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:51:01,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-19 23:51:01,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-19 23:51:01,847 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 5 states. [2020-07-19 23:51:01,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:51:01,944 INFO L93 Difference]: Finished difference Result 45 states and 60 transitions. [2020-07-19 23:51:01,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-19 23:51:01,946 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-07-19 23:51:01,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:51:01,957 INFO L225 Difference]: With dead ends: 45 [2020-07-19 23:51:01,958 INFO L226 Difference]: Without dead ends: 24 [2020-07-19 23:51:01,962 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-19 23:51:01,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-07-19 23:51:02,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2020-07-19 23:51:02,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-07-19 23:51:02,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-07-19 23:51:02,005 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 10 [2020-07-19 23:51:02,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:51:02,006 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-07-19 23:51:02,006 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-19 23:51:02,007 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-07-19 23:51:02,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-19 23:51:02,008 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:51:02,008 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:51:02,219 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-07-19 23:51:02,220 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:51:02,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:51:02,221 INFO L82 PathProgramCache]: Analyzing trace with hash 1187633082, now seen corresponding path program 1 times [2020-07-19 23:51:02,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:51:02,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478935049] [2020-07-19 23:51:02,223 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5f807c13 [2020-07-19 23:51:02,232 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-19 23:51:02,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2104877842] [2020-07-19 23:51:02,233 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@25ecae0f No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:51:02,270 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@25ecae0f issued 4 check-sat command(s) [2020-07-19 23:51:02,270 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:51:02,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-19 23:51:02,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:51:02,347 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:51:02,348 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478935049] [2020-07-19 23:51:02,348 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-19 23:51:02,348 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104877842] [2020-07-19 23:51:02,349 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 23:51:02,349 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-19 23:51:02,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492742619] [2020-07-19 23:51:02,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-19 23:51:02,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:51:02,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-19 23:51:02,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-19 23:51:02,353 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 6 states. [2020-07-19 23:51:02,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:51:02,428 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2020-07-19 23:51:02,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-19 23:51:02,429 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-07-19 23:51:02,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:51:02,431 INFO L225 Difference]: With dead ends: 31 [2020-07-19 23:51:02,431 INFO L226 Difference]: Without dead ends: 23 [2020-07-19 23:51:02,432 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-19 23:51:02,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-07-19 23:51:02,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-07-19 23:51:02,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-07-19 23:51:02,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-07-19 23:51:02,440 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 17 [2020-07-19 23:51:02,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:51:02,440 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-07-19 23:51:02,441 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-19 23:51:02,441 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-07-19 23:51:02,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-19 23:51:02,442 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:51:02,442 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:51:02,656 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:51:02,656 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:51:02,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:51:02,657 INFO L82 PathProgramCache]: Analyzing trace with hash 1235596592, now seen corresponding path program 1 times [2020-07-19 23:51:02,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:51:02,658 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918299566] [2020-07-19 23:51:02,658 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5f807c13 [2020-07-19 23:51:02,665 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-19 23:51:02,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1318730967] [2020-07-19 23:51:02,665 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4618396d No working directory specified, using /storage/repos/ultimate/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 [2020-07-19 23:51:02,700 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4618396d issued 4 check-sat command(s) [2020-07-19 23:51:02,700 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:51:02,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-19 23:51:02,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:51:02,790 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:51:02,790 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918299566] [2020-07-19 23:51:02,791 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-19 23:51:02,791 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318730967] [2020-07-19 23:51:02,791 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-19 23:51:02,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-07-19 23:51:02,792 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024206569] [2020-07-19 23:51:02,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-19 23:51:02,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:51:02,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-19 23:51:02,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-19 23:51:02,794 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 6 states. [2020-07-19 23:51:02,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:51:02,874 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2020-07-19 23:51:02,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-19 23:51:02,875 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-07-19 23:51:02,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:51:02,876 INFO L225 Difference]: With dead ends: 33 [2020-07-19 23:51:02,876 INFO L226 Difference]: Without dead ends: 31 [2020-07-19 23:51:02,877 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-19 23:51:02,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-07-19 23:51:02,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2020-07-19 23:51:02,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-07-19 23:51:02,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2020-07-19 23:51:02,886 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 17 [2020-07-19 23:51:02,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:51:02,886 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2020-07-19 23:51:02,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-19 23:51:02,887 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2020-07-19 23:51:02,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-19 23:51:02,888 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:51:02,888 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:51:03,103 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:51:03,103 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:51:03,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:51:03,104 INFO L82 PathProgramCache]: Analyzing trace with hash -725804614, now seen corresponding path program 1 times [2020-07-19 23:51:03,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:51:03,104 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410939888] [2020-07-19 23:51:03,105 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5f807c13 [2020-07-19 23:51:03,111 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-19 23:51:03,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [492575699] [2020-07-19 23:51:03,112 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3aa9c5a4 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:51:03,155 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3aa9c5a4 issued 4 check-sat command(s) [2020-07-19 23:51:03,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:51:03,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 20 conjunts are in the unsatisfiable core [2020-07-19 23:51:03,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:51:09,406 WARN L193 SmtUtils]: Spent 4.12 s on a formula simplification that was a NOOP. DAG size: 13 [2020-07-19 23:51:09,477 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-19 23:51:09,549 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-19 23:51:09,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410939888] [2020-07-19 23:51:09,551 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-19 23:51:09,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492575699] [2020-07-19 23:51:09,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-19 23:51:09,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-07-19 23:51:09,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758274802] [2020-07-19 23:51:09,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-19 23:51:09,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:51:09,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-19 23:51:09,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=71, Unknown=1, NotChecked=0, Total=90 [2020-07-19 23:51:09,556 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 10 states. [2020-07-19 23:51:17,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:51:17,977 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2020-07-19 23:51:17,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-19 23:51:17,980 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2020-07-19 23:51:17,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:51:17,981 INFO L225 Difference]: With dead ends: 32 [2020-07-19 23:51:17,981 INFO L226 Difference]: Without dead ends: 0 [2020-07-19 23:51:17,985 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=35, Invalid=120, Unknown=1, NotChecked=0, Total=156 [2020-07-19 23:51:17,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-19 23:51:17,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-19 23:51:17,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-19 23:51:17,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-19 23:51:17,986 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2020-07-19 23:51:17,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:51:17,986 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-19 23:51:17,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-19 23:51:17,986 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-19 23:51:17,987 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-19 23:51:18,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:51:18,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-19 23:51:18,232 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-19 23:51:18,232 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-19 23:51:18,232 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-19 23:51:18,232 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-19 23:51:18,232 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-19 23:51:18,233 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-19 23:51:18,233 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 10 12) no Hoare annotation was computed. [2020-07-19 23:51:18,233 INFO L268 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-07-19 23:51:18,233 INFO L268 CegarLoopResult]: For program point L11-2(lines 10 12) no Hoare annotation was computed. [2020-07-19 23:51:18,233 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 10 12) no Hoare annotation was computed. [2020-07-19 23:51:18,233 INFO L271 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: true [2020-07-19 23:51:18,233 INFO L268 CegarLoopResult]: For program point L31-1(lines 30 40) no Hoare annotation was computed. [2020-07-19 23:51:18,234 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 20 46) the Hoare annotation is: true [2020-07-19 23:51:18,234 INFO L271 CegarLoopResult]: At program point L30-2(lines 30 40) the Hoare annotation is: true [2020-07-19 23:51:18,234 INFO L268 CegarLoopResult]: For program point L30-3(lines 30 40) no Hoare annotation was computed. [2020-07-19 23:51:18,234 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 20 46) no Hoare annotation was computed. [2020-07-19 23:51:18,234 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 20 46) no Hoare annotation was computed. [2020-07-19 23:51:18,234 INFO L271 CegarLoopResult]: At program point L44(line 44) the Hoare annotation is: true [2020-07-19 23:51:18,234 INFO L268 CegarLoopResult]: For program point L44-1(line 44) no Hoare annotation was computed. [2020-07-19 23:51:18,235 INFO L268 CegarLoopResult]: For program point L15(lines 15 16) no Hoare annotation was computed. [2020-07-19 23:51:18,235 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 13 19) the Hoare annotation is: true [2020-07-19 23:51:18,235 INFO L268 CegarLoopResult]: For program point L14(lines 14 17) no Hoare annotation was computed. [2020-07-19 23:51:18,235 INFO L268 CegarLoopResult]: For program point L14-2(lines 13 19) no Hoare annotation was computed. [2020-07-19 23:51:18,235 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 13 19) no Hoare annotation was computed. [2020-07-19 23:51:18,235 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2020-07-19 23:51:18,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 11:51:18 BoogieIcfgContainer [2020-07-19 23:51:18,249 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-19 23:51:18,253 INFO L168 Benchmark]: Toolchain (without parser) took 17497.32 ms. Allocated memory was 146.8 MB in the beginning and 234.4 MB in the end (delta: 87.6 MB). Free memory was 103.0 MB in the beginning and 170.0 MB in the end (delta: -67.0 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. [2020-07-19 23:51:18,255 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 146.8 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-19 23:51:18,256 INFO L168 Benchmark]: CACSL2BoogieTranslator took 252.76 ms. Allocated memory is still 146.8 MB. Free memory was 102.8 MB in the beginning and 93.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-07-19 23:51:18,258 INFO L168 Benchmark]: Boogie Preprocessor took 122.13 ms. Allocated memory was 146.8 MB in the beginning and 204.5 MB in the end (delta: 57.7 MB). Free memory was 93.2 MB in the beginning and 184.5 MB in the end (delta: -91.3 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. [2020-07-19 23:51:18,259 INFO L168 Benchmark]: RCFGBuilder took 285.29 ms. Allocated memory is still 204.5 MB. Free memory was 184.5 MB in the beginning and 171.4 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-07-19 23:51:18,260 INFO L168 Benchmark]: TraceAbstraction took 16829.26 ms. Allocated memory was 204.5 MB in the beginning and 234.4 MB in the end (delta: 29.9 MB). Free memory was 170.8 MB in the beginning and 170.0 MB in the end (delta: 784.0 kB). Peak memory consumption was 30.7 MB. Max. memory is 7.1 GB. [2020-07-19 23:51:18,265 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 146.8 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 252.76 ms. Allocated memory is still 146.8 MB. Free memory was 102.8 MB in the beginning and 93.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 122.13 ms. Allocated memory was 146.8 MB in the beginning and 204.5 MB in the end (delta: 57.7 MB). Free memory was 93.2 MB in the beginning and 184.5 MB in the end (delta: -91.3 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 285.29 ms. Allocated memory is still 204.5 MB. Free memory was 184.5 MB in the beginning and 171.4 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 16829.26 ms. Allocated memory was 204.5 MB in the beginning and 234.4 MB in the end (delta: 29.9 MB). Free memory was 170.8 MB in the beginning and 170.0 MB in the end (delta: 784.0 kB). Peak memory consumption was 30.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 16.7s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 8.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 58 SDtfs, 33 SDslu, 218 SDs, 0 SdLazy, 148 SolverSat, 7 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 8.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 70 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 6.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 15 PreInvPairs, 24 NumberOfFragments, 8 HoareAnnotationTreeSize, 15 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 6.6s InterpolantComputationTime, 68 NumberOfCodeBlocks, 67 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 64 ConstructedInterpolants, 1 QuantifiedInterpolants, 4911 SizeOfPredicates, 11 NumberOfNonLiveVariables, 193 ConjunctsInSsa, 49 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 11/17 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 correct! Received shutdown request...