/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-acceleration/phases_2-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 11:49:00,331 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 11:49:00,334 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 11:49:00,348 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 11:49:00,349 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 11:49:00,350 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 11:49:00,352 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 11:49:00,354 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 11:49:00,356 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 11:49:00,357 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 11:49:00,358 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 11:49:00,360 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 11:49:00,361 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 11:49:00,363 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 11:49:00,364 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 11:49:00,365 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 11:49:00,366 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 11:49:00,367 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 11:49:00,369 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 11:49:00,371 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 11:49:00,373 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 11:49:00,374 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 11:49:00,375 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 11:49:00,376 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 11:49:00,380 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 11:49:00,389 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 11:49:00,390 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 11:49:00,391 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 11:49:00,392 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 [2020-07-20 11:49:00,425 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 11:49:00,425 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 11:49:00,428 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 11:49:00,428 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 11:49:00,428 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 11:49:00,429 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 11:49:00,429 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 11:49:00,429 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 11:49:00,429 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 11:49:00,429 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 11:49:00,431 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 11:49:00,431 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 11:49:00,431 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 11:49:00,432 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 11:49:00,432 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 11:49:00,433 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 11:49:00,433 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 11:49:00,433 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 11:49:00,433 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 11:49:00,433 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 11:49:00,434 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 11:49:00,435 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 11:49:00,435 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 11:49:00,435 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 11:49:00,436 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 11:49:00,436 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 11:49:00,436 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:49:00,436 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 11:49:00,436 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 11:49:00,436 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> NOT_INCREMENTALLY [2020-07-20 11:49:00,781 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 11:49:00,805 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 11:49:00,809 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 11:49:00,811 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 11:49:00,814 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 11:49:00,816 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/phases_2-2.c [2020-07-20 11:49:00,931 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95ea395c6/9d77c2bf360c4eb7a1cdcfd5af769694/FLAGe07698fb1 [2020-07-20 11:49:01,534 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 11:49:01,535 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/phases_2-2.c [2020-07-20 11:49:01,544 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95ea395c6/9d77c2bf360c4eb7a1cdcfd5af769694/FLAGe07698fb1 [2020-07-20 11:49:01,847 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95ea395c6/9d77c2bf360c4eb7a1cdcfd5af769694 [2020-07-20 11:49:01,861 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 11:49:01,865 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 11:49:01,866 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 11:49:01,867 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 11:49:01,875 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 11:49:01,877 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:49:01" (1/1) ... [2020-07-20 11:49:01,882 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f165e30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:49:01, skipping insertion in model container [2020-07-20 11:49:01,882 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:49:01" (1/1) ... [2020-07-20 11:49:01,891 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 11:49:01,915 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 11:49:02,146 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:49:02,150 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 11:49:02,168 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:49:02,185 INFO L208 MainTranslator]: Completed translation [2020-07-20 11:49:02,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:49:02 WrapperNode [2020-07-20 11:49:02,186 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 11:49:02,187 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 11:49:02,187 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 11:49:02,188 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 11:49:02,202 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:49:02" (1/1) ... [2020-07-20 11:49:02,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:49:02" (1/1) ... [2020-07-20 11:49:02,308 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:49:02" (1/1) ... [2020-07-20 11:49:02,308 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:49:02" (1/1) ... [2020-07-20 11:49:02,314 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:49:02" (1/1) ... [2020-07-20 11:49:02,320 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:49:02" (1/1) ... [2020-07-20 11:49:02,322 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:49:02" (1/1) ... [2020-07-20 11:49:02,324 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 11:49:02,326 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 11:49:02,326 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 11:49:02,326 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 11:49:02,328 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:49:02" (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 [2020-07-20 11:49:02,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 11:49:02,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 11:49:02,409 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 11:49:02,409 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 11:49:02,409 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 11:49:02,409 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 11:49:02,409 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 11:49:02,409 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 11:49:02,410 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-07-20 11:49:02,410 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 11:49:02,410 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 11:49:02,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 11:49:02,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 11:49:02,678 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 11:49:02,679 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 11:49:02,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:49:02 BoogieIcfgContainer [2020-07-20 11:49:02,684 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 11:49:02,686 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 11:49:02,687 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 11:49:02,692 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 11:49:02,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 11:49:01" (1/3) ... [2020-07-20 11:49:02,694 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d47848 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:49:02, skipping insertion in model container [2020-07-20 11:49:02,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:49:02" (2/3) ... [2020-07-20 11:49:02,695 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d47848 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:49:02, skipping insertion in model container [2020-07-20 11:49:02,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:49:02" (3/3) ... [2020-07-20 11:49:02,697 INFO L109 eAbstractionObserver]: Analyzing ICFG phases_2-2.c [2020-07-20 11:49:02,712 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 11:49:02,724 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 11:49:02,750 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 11:49:02,799 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 11:49:02,800 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 11:49:02,800 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 11:49:02,801 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 11:49:02,801 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 11:49:02,801 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 11:49:02,801 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 11:49:02,802 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 11:49:02,830 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-07-20 11:49:02,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-20 11:49:02,840 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:49:02,841 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:49:02,842 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:49:02,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:49:02,853 INFO L82 PathProgramCache]: Analyzing trace with hash 900249630, now seen corresponding path program 1 times [2020-07-20 11:49:02,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:49:02,867 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1457007544] [2020-07-20 11:49:02,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:49:02,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:49:02,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 11:49:02,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:49:02,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:49:02,967 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:49:02,968 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1457007544] [2020-07-20 11:49:02,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:49:02,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 11:49:02,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286199050] [2020-07-20 11:49:02,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 11:49:02,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:49:02,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 11:49:02,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 11:49:02,995 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-07-20 11:49:03,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:49:03,026 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2020-07-20 11:49:03,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 11:49:03,027 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-07-20 11:49:03,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:49:03,035 INFO L225 Difference]: With dead ends: 30 [2020-07-20 11:49:03,035 INFO L226 Difference]: Without dead ends: 13 [2020-07-20 11:49:03,040 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 11:49:03,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-07-20 11:49:03,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-07-20 11:49:03,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-07-20 11:49:03,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2020-07-20 11:49:03,081 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 11 [2020-07-20 11:49:03,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:49:03,082 INFO L479 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2020-07-20 11:49:03,082 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 11:49:03,082 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2020-07-20 11:49:03,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-20 11:49:03,083 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:49:03,083 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:49:03,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:49:03,288 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:49:03,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:49:03,289 INFO L82 PathProgramCache]: Analyzing trace with hash 891014420, now seen corresponding path program 1 times [2020-07-20 11:49:03,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:49:03,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1589434987] [2020-07-20 11:49:03,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:49:03,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:49:03,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-20 11:49:03,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:49:03,475 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 11:49:03,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:49:03,552 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:49:03,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1589434987] [2020-07-20 11:49:03,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:49:03,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-20 11:49:03,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944170709] [2020-07-20 11:49:03,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 11:49:03,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:49:03,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 11:49:03,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-07-20 11:49:03,558 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 7 states. [2020-07-20 11:49:03,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:49:03,682 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2020-07-20 11:49:03,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 11:49:03,683 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2020-07-20 11:49:03,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:49:03,685 INFO L225 Difference]: With dead ends: 20 [2020-07-20 11:49:03,685 INFO L226 Difference]: Without dead ends: 15 [2020-07-20 11:49:03,687 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-07-20 11:49:03,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-07-20 11:49:03,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-07-20 11:49:03,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-07-20 11:49:03,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2020-07-20 11:49:03,700 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 11 [2020-07-20 11:49:03,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:49:03,701 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2020-07-20 11:49:03,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 11:49:03,703 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2020-07-20 11:49:03,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-20 11:49:03,704 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:49:03,705 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:49:03,921 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:49:03,922 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:49:03,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:49:03,923 INFO L82 PathProgramCache]: Analyzing trace with hash -1596010865, now seen corresponding path program 1 times [2020-07-20 11:49:03,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:49:03,924 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [473990312] [2020-07-20 11:49:03,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:49:03,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:49:03,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-20 11:49:03,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:49:04,039 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 11:49:04,086 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:49:04,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 11:49:04,121 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 11:49:04,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:49:04,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [473990312] [2020-07-20 11:49:04,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-20 11:49:04,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 11 [2020-07-20 11:49:04,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386163244] [2020-07-20 11:49:04,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 11:49:04,228 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:49:04,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 11:49:04,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-07-20 11:49:04,229 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 7 states. [2020-07-20 11:49:10,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:49:10,487 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2020-07-20 11:49:10,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 11:49:10,488 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-07-20 11:49:10,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:49:10,490 INFO L225 Difference]: With dead ends: 21 [2020-07-20 11:49:10,490 INFO L226 Difference]: Without dead ends: 16 [2020-07-20 11:49:10,494 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-07-20 11:49:10,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-07-20 11:49:10,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-07-20 11:49:10,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-07-20 11:49:10,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2020-07-20 11:49:10,503 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 13 [2020-07-20 11:49:10,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:49:10,504 INFO L479 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2020-07-20 11:49:10,504 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 11:49:10,504 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-07-20 11:49:10,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-20 11:49:10,506 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:49:10,506 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:49:10,720 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:49:10,722 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:49:10,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:49:10,723 INFO L82 PathProgramCache]: Analyzing trace with hash 612215820, now seen corresponding path program 1 times [2020-07-20 11:49:10,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:49:10,724 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1219288164] [2020-07-20 11:49:10,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:49:10,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:49:10,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 11:49:10,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:49:10,819 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-20 11:49:10,820 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:49:10,820 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1219288164] [2020-07-20 11:49:10,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:49:10,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 11:49:10,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463075121] [2020-07-20 11:49:10,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 11:49:10,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:49:10,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 11:49:10,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-07-20 11:49:10,823 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 5 states. [2020-07-20 11:49:10,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:49:10,851 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2020-07-20 11:49:10,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 11:49:10,868 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-07-20 11:49:10,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:49:10,869 INFO L225 Difference]: With dead ends: 17 [2020-07-20 11:49:10,869 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 11:49:10,870 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-07-20 11:49:10,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 11:49:10,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 11:49:10,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 11:49:10,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 11:49:10,871 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-07-20 11:49:10,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:49:10,871 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 11:49:10,872 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 11:49:10,872 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 11:49:10,872 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 11:49:11,082 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:49:11,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 11:49:11,229 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-20 11:49:11,229 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 11:49:11,230 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 11:49:11,230 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 11:49:11,230 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 11:49:11,230 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 11:49:11,230 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-07-20 11:49:11,230 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-07-20 11:49:11,231 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-07-20 11:49:11,231 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-07-20 11:49:11,231 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 15 30) the Hoare annotation is: true [2020-07-20 11:49:11,231 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 15 30) no Hoare annotation was computed. [2020-07-20 11:49:11,231 INFO L268 CegarLoopResult]: For program point L22(lines 22 26) no Hoare annotation was computed. [2020-07-20 11:49:11,231 INFO L264 CegarLoopResult]: At program point L22-2(lines 21 27) the Hoare annotation is: (and (= 1 main_~x~0) (< 0 (mod main_~y~0 4294967296))) [2020-07-20 11:49:11,232 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-07-20 11:49:11,232 INFO L264 CegarLoopResult]: At program point L21-2(lines 21 27) the Hoare annotation is: (= (mod main_~y~0 4294967296) (mod main_~x~0 4294967296)) [2020-07-20 11:49:11,232 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 15 30) no Hoare annotation was computed. [2020-07-20 11:49:11,233 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 8 13) the Hoare annotation is: true [2020-07-20 11:49:11,233 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-07-20 11:49:11,233 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 8 13) no Hoare annotation was computed. [2020-07-20 11:49:11,233 INFO L268 CegarLoopResult]: For program point L9(lines 9 11) no Hoare annotation was computed. [2020-07-20 11:49:11,233 INFO L268 CegarLoopResult]: For program point L9-2(lines 8 13) no Hoare annotation was computed. [2020-07-20 11:49:11,234 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 10) no Hoare annotation was computed. [2020-07-20 11:49:11,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 11:49:11 BoogieIcfgContainer [2020-07-20 11:49:11,267 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 11:49:11,273 INFO L168 Benchmark]: Toolchain (without parser) took 9406.74 ms. Allocated memory was 136.3 MB in the beginning and 230.2 MB in the end (delta: 93.8 MB). Free memory was 99.7 MB in the beginning and 192.5 MB in the end (delta: -92.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 7.1 GB. [2020-07-20 11:49:11,277 INFO L168 Benchmark]: CDTParser took 0.45 ms. Allocated memory is still 136.3 MB. Free memory is still 117.8 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-20 11:49:11,280 INFO L168 Benchmark]: CACSL2BoogieTranslator took 320.26 ms. Allocated memory is still 136.3 MB. Free memory was 99.3 MB in the beginning and 90.1 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2020-07-20 11:49:11,289 INFO L168 Benchmark]: Boogie Preprocessor took 138.17 ms. Allocated memory was 136.3 MB in the beginning and 201.3 MB in the end (delta: 65.0 MB). Free memory was 90.1 MB in the beginning and 179.8 MB in the end (delta: -89.7 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. [2020-07-20 11:49:11,293 INFO L168 Benchmark]: RCFGBuilder took 358.14 ms. Allocated memory is still 201.3 MB. Free memory was 179.8 MB in the beginning and 167.0 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-07-20 11:49:11,294 INFO L168 Benchmark]: TraceAbstraction took 8581.55 ms. Allocated memory was 201.3 MB in the beginning and 230.2 MB in the end (delta: 28.8 MB). Free memory was 166.1 MB in the beginning and 192.5 MB in the end (delta: -26.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-07-20 11:49:11,302 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45 ms. Allocated memory is still 136.3 MB. Free memory is still 117.8 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 320.26 ms. Allocated memory is still 136.3 MB. Free memory was 99.3 MB in the beginning and 90.1 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 138.17 ms. Allocated memory was 136.3 MB in the beginning and 201.3 MB in the end (delta: 65.0 MB). Free memory was 90.1 MB in the beginning and 179.8 MB in the end (delta: -89.7 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 358.14 ms. Allocated memory is still 201.3 MB. Free memory was 179.8 MB in the beginning and 167.0 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 8581.55 ms. Allocated memory was 201.3 MB in the beginning and 230.2 MB in the end (delta: 28.8 MB). Free memory was 166.1 MB in the beginning and 192.5 MB in the end (delta: -26.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 10]: 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: 21]: Loop Invariant Derived loop invariant: 1 == x && 0 < y % 4294967296 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8.2s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 6.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 46 SDtfs, 11 SDslu, 66 SDs, 0 SdLazy, 64 SolverSat, 6 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 6.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 62 GetRequests, 38 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 10 PreInvPairs, 14 NumberOfFragments, 21 HoareAnnotationTreeSize, 10 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 39 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 50 NumberOfCodeBlocks, 50 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 58 ConstructedInterpolants, 0 QuantifiedInterpolants, 2250 SizeOfPredicates, 6 NumberOfNonLiveVariables, 112 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 5/6 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...