/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 SMT_FEATURE_HEURISTIC --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 2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/sumt2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 14:30:48,408 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 14:30:48,413 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 14:30:48,427 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 14:30:48,428 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 14:30:48,429 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 14:30:48,430 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 14:30:48,433 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 14:30:48,436 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 14:30:48,437 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 14:30:48,438 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 14:30:48,439 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 14:30:48,440 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 14:30:48,441 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 14:30:48,442 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 14:30:48,444 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 14:30:48,444 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 14:30:48,445 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 14:30:48,447 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 14:30:48,449 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 14:30:48,451 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 14:30:48,453 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 14:30:48,454 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 14:30:48,455 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 14:30:48,458 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 14:30:48,466 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 14:30:48,467 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 14:30:48,468 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 14:30:48,469 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 [2020-07-21 14:30:48,486 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 14:30:48,486 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 14:30:48,487 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 14:30:48,488 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 14:30:48,488 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 14:30:48,488 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 14:30:48,488 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 14:30:48,489 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 14:30:48,489 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 14:30:48,489 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 14:30:48,489 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 14:30:48,489 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 14:30:48,490 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 14:30:48,490 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 14:30:48,490 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 14:30:48,490 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 14:30:48,490 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 14:30:48,491 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 14:30:48,491 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 14:30:48,491 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 14:30:48,491 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 14:30:48,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 14:30:48,492 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 14:30:48,492 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 14:30:48,492 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 14:30:48,492 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 14:30:48,492 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:30:48,493 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 14:30:48,493 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 14:30:48,493 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 -> SMT_FEATURE_HEURISTIC 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 -> 2 [2020-07-21 14:30:48,803 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 14:30:48,817 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 14:30:48,826 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 14:30:48,830 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 14:30:48,830 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 14:30:48,836 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/sumt2.c [2020-07-21 14:30:48,941 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d796ae8e2/d9fd12dda7ee47a0bbefc80ad33a727c/FLAGe66da895e [2020-07-21 14:30:49,488 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 14:30:49,489 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/sumt2.c [2020-07-21 14:30:49,497 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d796ae8e2/d9fd12dda7ee47a0bbefc80ad33a727c/FLAGe66da895e [2020-07-21 14:30:49,809 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d796ae8e2/d9fd12dda7ee47a0bbefc80ad33a727c [2020-07-21 14:30:49,819 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 14:30:49,822 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 14:30:49,823 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 14:30:49,824 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 14:30:49,828 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 14:30:49,829 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:30:49" (1/1) ... [2020-07-21 14:30:49,832 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4487fdd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:30:49, skipping insertion in model container [2020-07-21 14:30:49,833 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:30:49" (1/1) ... [2020-07-21 14:30:49,841 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 14:30:49,862 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 14:30:50,047 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 14:30:50,052 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 14:30:50,068 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 14:30:50,084 INFO L208 MainTranslator]: Completed translation [2020-07-21 14:30:50,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:30:50 WrapperNode [2020-07-21 14:30:50,084 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 14:30:50,085 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 14:30:50,086 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 14:30:50,086 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 14:30:50,099 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:30:50" (1/1) ... [2020-07-21 14:30:50,099 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:30:50" (1/1) ... [2020-07-21 14:30:50,105 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:30:50" (1/1) ... [2020-07-21 14:30:50,105 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:30:50" (1/1) ... [2020-07-21 14:30:50,110 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:30:50" (1/1) ... [2020-07-21 14:30:50,116 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:30:50" (1/1) ... [2020-07-21 14:30:50,117 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:30:50" (1/1) ... [2020-07-21 14:30:50,119 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 14:30:50,120 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 14:30:50,120 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 14:30:50,121 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 14:30:50,122 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:30:50" (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 [2020-07-21 14:30:50,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 14:30:50,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 14:30:50,286 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-21 14:30:50,286 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-21 14:30:50,286 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 14:30:50,286 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 14:30:50,287 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 14:30:50,287 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-21 14:30:50,287 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-21 14:30:50,287 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 14:30:50,287 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 14:30:50,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 14:30:50,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 14:30:50,527 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 14:30:50,528 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 14:30:50,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:30:50 BoogieIcfgContainer [2020-07-21 14:30:50,542 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 14:30:50,543 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 14:30:50,543 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 14:30:50,546 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 14:30:50,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 02:30:49" (1/3) ... [2020-07-21 14:30:50,547 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75814c4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:30:50, skipping insertion in model container [2020-07-21 14:30:50,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:30:50" (2/3) ... [2020-07-21 14:30:50,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75814c4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:30:50, skipping insertion in model container [2020-07-21 14:30:50,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:30:50" (3/3) ... [2020-07-21 14:30:50,551 INFO L109 eAbstractionObserver]: Analyzing ICFG sumt2.c [2020-07-21 14:30:50,563 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 14:30:50,572 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 14:30:50,589 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 14:30:50,615 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 14:30:50,615 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 14:30:50,615 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 14:30:50,615 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 14:30:50,616 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 14:30:50,616 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 14:30:50,616 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 14:30:50,617 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 14:30:50,637 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-07-21 14:30:50,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-21 14:30:50,645 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:30:50,646 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 14:30:50,646 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 14:30:50,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:30:50,654 INFO L82 PathProgramCache]: Analyzing trace with hash -647006370, now seen corresponding path program 1 times [2020-07-21 14:30:50,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:30:50,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1130478836] [2020-07-21 14:30:50,665 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) 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 [2020-07-21 14:30:50,803 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 14:30:50,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:30:50,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 14:30:50,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:30:50,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 14:30:50,842 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 14:30:50,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1130478836] [2020-07-21 14:30:50,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 14:30:50,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 14:30:50,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838640031] [2020-07-21 14:30:50,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 14:30:50,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:30:50,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 14:30:50,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 14:30:50,871 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2020-07-21 14:30:50,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:30:50,896 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2020-07-21 14:30:50,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 14:30:50,898 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-07-21 14:30:50,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:30:50,907 INFO L225 Difference]: With dead ends: 34 [2020-07-21 14:30:50,907 INFO L226 Difference]: Without dead ends: 15 [2020-07-21 14:30:50,911 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 14:30:50,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-07-21 14:30:50,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-07-21 14:30:50,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-07-21 14:30:50,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2020-07-21 14:30:50,962 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 12 [2020-07-21 14:30:50,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:30:50,963 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2020-07-21 14:30:50,963 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 14:30:50,963 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2020-07-21 14:30:50,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-21 14:30:50,964 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:30:50,965 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 14:30:51,180 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:30:51,181 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 14:30:51,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:30:51,183 INFO L82 PathProgramCache]: Analyzing trace with hash -657165101, now seen corresponding path program 1 times [2020-07-21 14:30:51,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:30:51,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1999980179] [2020-07-21 14:30:51,184 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) 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 [2020-07-21 14:30:51,223 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 14:30:51,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:30:51,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-21 14:30:51,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:30:51,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 14:30:51,312 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 14:30:51,313 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1999980179] [2020-07-21 14:30:51,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 14:30:51,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 14:30:51,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995288207] [2020-07-21 14:30:51,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 14:30:51,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:30:51,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 14:30:51,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 14:30:51,317 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 5 states. [2020-07-21 14:30:51,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:30:51,399 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2020-07-21 14:30:51,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 14:30:51,401 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-07-21 14:30:51,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:30:51,402 INFO L225 Difference]: With dead ends: 28 [2020-07-21 14:30:51,403 INFO L226 Difference]: Without dead ends: 17 [2020-07-21 14:30:51,405 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-21 14:30:51,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-07-21 14:30:51,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-07-21 14:30:51,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-07-21 14:30:51,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2020-07-21 14:30:51,413 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 12 [2020-07-21 14:30:51,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:30:51,413 INFO L479 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2020-07-21 14:30:51,414 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 14:30:51,414 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2020-07-21 14:30:51,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-21 14:30:51,415 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:30:51,415 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 14:30:51,629 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:30:51,630 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 14:30:51,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:30:51,631 INFO L82 PathProgramCache]: Analyzing trace with hash 523159493, now seen corresponding path program 1 times [2020-07-21 14:30:51,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:30:51,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1192180065] [2020-07-21 14:30:51,632 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) 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 [2020-07-21 14:30:51,691 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 14:30:51,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:30:51,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 15 conjunts are in the unsatisfiable core [2020-07-21 14:30:51,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:30:51,925 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 14:30:51,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 14:30:51,967 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 14:30:56,367 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 14:30:56,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1192180065] [2020-07-21 14:30:56,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 14:30:56,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2020-07-21 14:30:56,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707330784] [2020-07-21 14:30:56,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-21 14:30:56,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:30:56,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-21 14:30:56,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=133, Unknown=2, NotChecked=0, Total=182 [2020-07-21 14:30:56,376 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 14 states. [2020-07-21 14:30:58,790 WARN L193 SmtUtils]: Spent 2.10 s on a formula simplification. DAG size of input: 32 DAG size of output: 9 [2020-07-21 14:30:58,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:30:58,888 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2020-07-21 14:30:58,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 14:30:58,889 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 15 [2020-07-21 14:30:58,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:30:58,890 INFO L225 Difference]: With dead ends: 34 [2020-07-21 14:30:58,890 INFO L226 Difference]: Without dead ends: 22 [2020-07-21 14:30:58,891 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=61, Invalid=177, Unknown=2, NotChecked=0, Total=240 [2020-07-21 14:30:58,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-07-21 14:30:58,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-07-21 14:30:58,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-07-21 14:30:58,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-07-21 14:30:58,897 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 15 [2020-07-21 14:30:58,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:30:58,897 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-07-21 14:30:58,897 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-21 14:30:58,898 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-07-21 14:30:58,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-21 14:30:58,898 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:30:58,899 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 14:30:59,101 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:30:59,102 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 14:30:59,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:30:59,103 INFO L82 PathProgramCache]: Analyzing trace with hash 1817505603, now seen corresponding path program 1 times [2020-07-21 14:30:59,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:30:59,104 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [235257313] [2020-07-21 14:30:59,104 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) 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 [2020-07-21 14:30:59,141 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 14:30:59,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:30:59,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 21 conjunts are in the unsatisfiable core [2020-07-21 14:30:59,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:30:59,314 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 14:30:59,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 14:30:59,361 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 14:31:00,256 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-21 14:31:00,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [235257313] [2020-07-21 14:31:00,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-21 14:31:00,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 13 [2020-07-21 14:31:00,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481208873] [2020-07-21 14:31:00,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 14:31:00,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:31:00,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 14:31:00,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-07-21 14:31:00,259 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 6 states. [2020-07-21 14:31:02,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:31:02,414 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2020-07-21 14:31:02,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 14:31:02,415 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-07-21 14:31:02,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:31:02,416 INFO L225 Difference]: With dead ends: 22 [2020-07-21 14:31:02,416 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 14:31:02,417 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 7 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-07-21 14:31:02,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 14:31:02,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 14:31:02,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 14:31:02,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 14:31:02,419 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-07-21 14:31:02,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:31:02,419 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 14:31:02,419 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 14:31:02,419 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 14:31:02,419 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 14:31:02,627 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:31:02,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 14:31:02,741 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 14:31:02,742 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-21 14:31:02,742 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 14:31:02,742 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 14:31:02,742 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-21 14:31:02,742 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 14:31:02,743 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 14:31:02,743 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-07-21 14:31:02,743 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-07-21 14:31:02,743 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-07-21 14:31:02,743 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-07-21 14:31:02,743 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 14 31) the Hoare annotation is: true [2020-07-21 14:31:02,744 INFO L268 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-07-21 14:31:02,744 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 14 31) no Hoare annotation was computed. [2020-07-21 14:31:02,744 INFO L268 CegarLoopResult]: For program point L23(lines 23 26) no Hoare annotation was computed. [2020-07-21 14:31:02,744 INFO L268 CegarLoopResult]: For program point L23-2(lines 23 26) no Hoare annotation was computed. [2020-07-21 14:31:02,745 INFO L264 CegarLoopResult]: At program point L21-2(lines 21 28) the Hoare annotation is: (= (mod (+ main_~j~0 main_~i~0) 4294967296) (mod main_~l~0 4294967296)) [2020-07-21 14:31:02,745 INFO L264 CegarLoopResult]: At program point L21-3(lines 21 28) the Hoare annotation is: (= (mod (+ main_~j~0 main_~i~0) 4294967296) (mod main_~l~0 4294967296)) [2020-07-21 14:31:02,745 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-07-21 14:31:02,746 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 14 31) no Hoare annotation was computed. [2020-07-21 14:31:02,746 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-07-21 14:31:02,746 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-07-21 14:31:02,746 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-07-21 14:31:02,746 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-07-21 14:31:02,746 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-07-21 14:31:02,747 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-07-21 14:31:02,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 02:31:02 BoogieIcfgContainer [2020-07-21 14:31:02,770 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 14:31:02,776 INFO L168 Benchmark]: Toolchain (without parser) took 12951.90 ms. Allocated memory was 136.8 MB in the beginning and 231.2 MB in the end (delta: 94.4 MB). Free memory was 100.9 MB in the beginning and 134.2 MB in the end (delta: -33.3 MB). Peak memory consumption was 61.1 MB. Max. memory is 7.1 GB. [2020-07-21 14:31:02,779 INFO L168 Benchmark]: CDTParser took 0.70 ms. Allocated memory is still 136.8 MB. Free memory was 118.7 MB in the beginning and 118.5 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-21 14:31:02,782 INFO L168 Benchmark]: CACSL2BoogieTranslator took 261.69 ms. Allocated memory is still 136.8 MB. Free memory was 100.5 MB in the beginning and 90.9 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-07-21 14:31:02,789 INFO L168 Benchmark]: Boogie Preprocessor took 34.29 ms. Allocated memory is still 136.8 MB. Free memory was 90.9 MB in the beginning and 89.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-07-21 14:31:02,790 INFO L168 Benchmark]: RCFGBuilder took 421.79 ms. Allocated memory was 136.8 MB in the beginning and 201.9 MB in the end (delta: 65.0 MB). Free memory was 89.3 MB in the beginning and 168.6 MB in the end (delta: -79.3 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2020-07-21 14:31:02,793 INFO L168 Benchmark]: TraceAbstraction took 12227.50 ms. Allocated memory was 201.9 MB in the beginning and 231.2 MB in the end (delta: 29.4 MB). Free memory was 167.9 MB in the beginning and 134.2 MB in the end (delta: 33.7 MB). Peak memory consumption was 63.1 MB. Max. memory is 7.1 GB. [2020-07-21 14:31:02,807 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.70 ms. Allocated memory is still 136.8 MB. Free memory was 118.7 MB in the beginning and 118.5 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 261.69 ms. Allocated memory is still 136.8 MB. Free memory was 100.5 MB in the beginning and 90.9 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 34.29 ms. Allocated memory is still 136.8 MB. Free memory was 90.9 MB in the beginning and 89.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 421.79 ms. Allocated memory was 136.8 MB in the beginning and 201.9 MB in the end (delta: 65.0 MB). Free memory was 89.3 MB in the beginning and 168.6 MB in the end (delta: -79.3 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 12227.50 ms. Allocated memory was 201.9 MB in the beginning and 231.2 MB in the end (delta: 29.4 MB). Free memory was 167.9 MB in the beginning and 134.2 MB in the end (delta: 33.7 MB). Peak memory consumption was 63.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: 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: (j + i) % 4294967296 == l % 4294967296 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 12.0s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 4.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 54 SDtfs, 15 SDslu, 123 SDs, 0 SdLazy, 121 SolverSat, 13 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 96 GetRequests, 57 SyntacticMatches, 9 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 7.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred 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, 13 PreInvPairs, 21 NumberOfFragments, 23 HoareAnnotationTreeSize, 13 FomulaSimplifications, 75 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 39 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 5.9s InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 90 ConstructedInterpolants, 1 QuantifiedInterpolants, 8090 SizeOfPredicates, 8 NumberOfNonLiveVariables, 175 ConjunctsInSsa, 46 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 12/26 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...