/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 BIGGEST_EQUIVALENCE_CLASS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/sumt3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 23:37:48,676 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 23:37:48,679 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 23:37:48,701 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 23:37:48,702 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 23:37:48,704 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 23:37:48,706 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 23:37:48,721 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 23:37:48,724 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 23:37:48,725 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 23:37:48,727 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 23:37:48,729 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 23:37:48,730 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 23:37:48,731 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 23:37:48,735 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 23:37:48,737 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 23:37:48,739 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 23:37:48,741 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 23:37:48,746 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 23:37:48,748 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 23:37:48,749 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 23:37:48,750 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 23:37:48,751 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 23:37:48,752 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 23:37:48,755 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 23:37:48,762 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 23:37:48,763 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 23:37:48,764 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 23:37:48,765 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 23:37:48,782 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 23:37:48,782 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 23:37:48,784 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 23:37:48,784 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 23:37:48,785 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 23:37:48,785 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 23:37:48,785 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 23:37:48,785 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 23:37:48,785 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 23:37:48,786 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 23:37:48,786 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 23:37:48,786 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 23:37:48,786 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 23:37:48,787 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 23:37:48,787 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 23:37:48,787 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 23:37:48,787 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 23:37:48,787 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 23:37:48,788 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 23:37:48,788 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 23:37:48,788 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 23:37:48,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 23:37:48,788 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 23:37:48,789 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 23:37:48,789 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 23:37:48,789 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 23:37:48,789 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:37:48,790 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 23:37:48,790 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 23:37:48,790 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 -> BIGGEST_EQUIVALENCE_CLASS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-21 23:37:49,124 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 23:37:49,141 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 23:37:49,146 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 23:37:49,148 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 23:37:49,148 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 23:37:49,149 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/sumt3.c [2020-07-21 23:37:49,245 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1577382e5/5def983996fb4c93afd47418e0ed6a61/FLAG8fd4b8517 [2020-07-21 23:37:49,863 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 23:37:49,864 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/sumt3.c [2020-07-21 23:37:49,873 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1577382e5/5def983996fb4c93afd47418e0ed6a61/FLAG8fd4b8517 [2020-07-21 23:37:50,195 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1577382e5/5def983996fb4c93afd47418e0ed6a61 [2020-07-21 23:37:50,209 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 23:37:50,213 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 23:37:50,214 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 23:37:50,215 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 23:37:50,219 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 23:37:50,220 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:37:50" (1/1) ... [2020-07-21 23:37:50,224 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ed63e3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:37:50, skipping insertion in model container [2020-07-21 23:37:50,224 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:37:50" (1/1) ... [2020-07-21 23:37:50,234 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 23:37:50,256 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 23:37:50,445 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 23:37:50,451 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 23:37:50,472 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 23:37:50,490 INFO L208 MainTranslator]: Completed translation [2020-07-21 23:37:50,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:37:50 WrapperNode [2020-07-21 23:37:50,491 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 23:37:50,492 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 23:37:50,492 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 23:37:50,493 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 23:37:50,509 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:37:50" (1/1) ... [2020-07-21 23:37:50,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:37:50" (1/1) ... [2020-07-21 23:37:50,517 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:37:50" (1/1) ... [2020-07-21 23:37:50,518 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:37:50" (1/1) ... [2020-07-21 23:37:50,525 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:37:50" (1/1) ... [2020-07-21 23:37:50,636 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:37:50" (1/1) ... [2020-07-21 23:37:50,638 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:37:50" (1/1) ... [2020-07-21 23:37:50,641 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 23:37:50,645 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 23:37:50,646 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 23:37:50,646 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 23:37:50,647 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:37:50" (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 23:37:50,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 23:37:50,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 23:37:50,729 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-21 23:37:50,729 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-21 23:37:50,730 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 23:37:50,730 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 23:37:50,730 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 23:37:50,731 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-21 23:37:50,731 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-21 23:37:50,731 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 23:37:50,732 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 23:37:50,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 23:37:50,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 23:37:51,009 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 23:37:51,010 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 23:37:51,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:37:51 BoogieIcfgContainer [2020-07-21 23:37:51,016 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 23:37:51,018 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 23:37:51,019 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 23:37:51,023 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 23:37:51,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 11:37:50" (1/3) ... [2020-07-21 23:37:51,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f03a31d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:37:51, skipping insertion in model container [2020-07-21 23:37:51,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:37:50" (2/3) ... [2020-07-21 23:37:51,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f03a31d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:37:51, skipping insertion in model container [2020-07-21 23:37:51,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:37:51" (3/3) ... [2020-07-21 23:37:51,027 INFO L109 eAbstractionObserver]: Analyzing ICFG sumt3.c [2020-07-21 23:37:51,044 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 23:37:51,055 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 23:37:51,075 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 23:37:51,106 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 23:37:51,107 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 23:37:51,107 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 23:37:51,107 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 23:37:51,108 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 23:37:51,108 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 23:37:51,109 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 23:37:51,109 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 23:37:51,135 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-07-21 23:37:51,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-21 23:37:51,143 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:37:51,145 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:37:51,145 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:37:51,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:37:51,153 INFO L82 PathProgramCache]: Analyzing trace with hash -320041890, now seen corresponding path program 1 times [2020-07-21 23:37:51,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:37:51,168 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1758325794] [2020-07-21 23:37:51,169 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 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 23:37:51,248 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 23:37:51,248 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:37:51,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 23:37:51,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:37:51,279 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 23:37:51,279 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:37:51,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1758325794] [2020-07-21 23:37:51,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:37:51,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 23:37:51,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877661003] [2020-07-21 23:37:51,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 23:37:51,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:37:51,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 23:37:51,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 23:37:51,308 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2020-07-21 23:37:51,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:37:51,333 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2020-07-21 23:37:51,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 23:37:51,335 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-07-21 23:37:51,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:37:51,345 INFO L225 Difference]: With dead ends: 35 [2020-07-21 23:37:51,345 INFO L226 Difference]: Without dead ends: 16 [2020-07-21 23:37:51,350 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 23:37:51,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-07-21 23:37:51,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-07-21 23:37:51,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-07-21 23:37:51,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2020-07-21 23:37:51,397 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 12 [2020-07-21 23:37:51,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:37:51,398 INFO L479 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2020-07-21 23:37:51,398 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 23:37:51,398 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-07-21 23:37:51,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-21 23:37:51,399 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:37:51,399 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:37:51,614 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:37:51,615 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:37:51,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:37:51,616 INFO L82 PathProgramCache]: Analyzing trace with hash -334818226, now seen corresponding path program 1 times [2020-07-21 23:37:51,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:37:51,618 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1509540326] [2020-07-21 23:37:51,618 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 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 23:37:51,661 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 23:37:51,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:37:51,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-21 23:37:51,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:37:51,752 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 23:37:51,753 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:37:51,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1509540326] [2020-07-21 23:37:51,754 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:37:51,754 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 23:37:51,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059197743] [2020-07-21 23:37:51,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 23:37:51,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:37:51,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 23:37:51,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 23:37:51,758 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 5 states. [2020-07-21 23:37:51,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:37:51,838 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2020-07-21 23:37:51,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 23:37:51,839 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-07-21 23:37:51,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:37:51,843 INFO L225 Difference]: With dead ends: 30 [2020-07-21 23:37:51,843 INFO L226 Difference]: Without dead ends: 18 [2020-07-21 23:37:51,845 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 23:37:51,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-07-21 23:37:51,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-07-21 23:37:51,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-07-21 23:37:51,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2020-07-21 23:37:51,853 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 12 [2020-07-21 23:37:51,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:37:51,853 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2020-07-21 23:37:51,854 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 23:37:51,854 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2020-07-21 23:37:51,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-21 23:37:51,855 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:37:51,855 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:37:52,061 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:37:52,064 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:37:52,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:37:52,065 INFO L82 PathProgramCache]: Analyzing trace with hash -135124987, now seen corresponding path program 1 times [2020-07-21 23:37:52,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:37:52,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2135843266] [2020-07-21 23:37:52,066 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 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 23:37:52,114 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 23:37:52,115 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:37:52,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2020-07-21 23:37:52,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:37:52,318 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 23:37:52,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 23:37:52,358 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:37:52,602 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 23:37:52,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2135843266] [2020-07-21 23:37:52,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 23:37:52,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2020-07-21 23:37:52,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897610034] [2020-07-21 23:37:52,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-21 23:37:52,604 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:37:52,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-21 23:37:52,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-07-21 23:37:52,606 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 14 states. [2020-07-21 23:38:03,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:38:03,279 INFO L93 Difference]: Finished difference Result 37 states and 45 transitions. [2020-07-21 23:38:03,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 23:38:03,280 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 15 [2020-07-21 23:38:03,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:38:03,281 INFO L225 Difference]: With dead ends: 37 [2020-07-21 23:38:03,283 INFO L226 Difference]: Without dead ends: 24 [2020-07-21 23:38:03,285 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2020-07-21 23:38:03,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-07-21 23:38:03,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-07-21 23:38:03,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-07-21 23:38:03,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2020-07-21 23:38:03,301 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 15 [2020-07-21 23:38:03,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:38:03,302 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2020-07-21 23:38:03,303 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-21 23:38:03,304 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2020-07-21 23:38:03,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-21 23:38:03,305 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:38:03,305 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:38:03,521 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:38:03,522 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:38:03,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:38:03,522 INFO L82 PathProgramCache]: Analyzing trace with hash 498025845, now seen corresponding path program 1 times [2020-07-21 23:38:03,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:38:03,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2098024651] [2020-07-21 23:38:03,523 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 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 23:38:03,568 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 23:38:03,568 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:38:03,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 23:38:03,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:38:03,600 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:38:03,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 23:38:05,792 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:38:05,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2098024651] [2020-07-21 23:38:05,797 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 23:38:05,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-07-21 23:38:05,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987807293] [2020-07-21 23:38:05,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 23:38:05,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:38:05,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 23:38:05,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=36, Unknown=1, NotChecked=0, Total=56 [2020-07-21 23:38:05,800 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 8 states. [2020-07-21 23:38:07,978 WARN L838 $PredicateComparison]: unable to prove that (and (< 0 (mod (mod (mod (+ c_main_~l~0 2) 4294967296) 3) 4294967296)) (< 0 (mod (mod (mod (+ c_main_~l~0 1) 4294967296) 3) 4294967296))) is different from false [2020-07-21 23:38:14,256 WARN L838 $PredicateComparison]: unable to prove that (and (< 0 (mod (mod (mod c_main_~l~0 4294967296) 3) 4294967296)) (< 0 (mod (mod (mod (+ c_main_~l~0 1) 4294967296) 3) 4294967296))) is different from false [2020-07-21 23:38:26,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:38:26,793 INFO L93 Difference]: Finished difference Result 48 states and 62 transitions. [2020-07-21 23:38:26,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-21 23:38:26,794 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2020-07-21 23:38:26,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:38:26,798 INFO L225 Difference]: With dead ends: 48 [2020-07-21 23:38:26,798 INFO L226 Difference]: Without dead ends: 39 [2020-07-21 23:38:26,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=23, Invalid=38, Unknown=3, NotChecked=26, Total=90 [2020-07-21 23:38:26,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-07-21 23:38:26,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2020-07-21 23:38:26,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-07-21 23:38:26,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 46 transitions. [2020-07-21 23:38:26,810 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 46 transitions. Word has length 22 [2020-07-21 23:38:26,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:38:26,810 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 46 transitions. [2020-07-21 23:38:26,810 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 23:38:26,811 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 46 transitions. [2020-07-21 23:38:26,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-21 23:38:26,812 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:38:26,812 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:38:27,016 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:38:27,017 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:38:27,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:38:27,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1437456715, now seen corresponding path program 1 times [2020-07-21 23:38:27,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:38:27,019 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [681471101] [2020-07-21 23:38:27,019 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:38:27,054 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 23:38:27,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:38:27,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 24 conjunts are in the unsatisfiable core [2020-07-21 23:38:27,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:38:27,246 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:38:27,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 23:38:27,276 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:38:53,891 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 0 refuted. 8 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-21 23:38:53,892 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [681471101] [2020-07-21 23:38:53,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 23:38:53,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 17 [2020-07-21 23:38:53,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475801156] [2020-07-21 23:38:53,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-07-21 23:38:53,894 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:38:53,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-07-21 23:38:53,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=208, Unknown=9, NotChecked=0, Total=272 [2020-07-21 23:38:53,896 INFO L87 Difference]: Start difference. First operand 37 states and 46 transitions. Second operand 17 states. [2020-07-21 23:39:10,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:39:10,884 INFO L93 Difference]: Finished difference Result 50 states and 63 transitions. [2020-07-21 23:39:10,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-21 23:39:10,887 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 23 [2020-07-21 23:39:10,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:39:10,888 INFO L225 Difference]: With dead ends: 50 [2020-07-21 23:39:10,888 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 23:39:10,890 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 25 SyntacticMatches, 7 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 27.0s TimeCoverageRelationStatistics Valid=59, Invalid=238, Unknown=9, NotChecked=0, Total=306 [2020-07-21 23:39:10,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 23:39:10,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 23:39:10,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 23:39:10,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 23:39:10,891 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2020-07-21 23:39:10,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:39:10,893 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 23:39:10,893 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-07-21 23:39:10,893 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 23:39:10,893 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 23:39:11,098 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:39:11,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 23:39:11,309 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 23:39:11,310 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-21 23:39:11,310 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 23:39:11,311 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 23:39:11,311 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-21 23:39:11,311 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 23:39:11,311 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 23:39:11,311 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-07-21 23:39:11,311 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-07-21 23:39:11,312 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-07-21 23:39:11,312 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-07-21 23:39:11,312 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 14 34) no Hoare annotation was computed. [2020-07-21 23:39:11,312 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-07-21 23:39:11,312 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 14 34) no Hoare annotation was computed. [2020-07-21 23:39:11,319 INFO L268 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2020-07-21 23:39:11,319 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 14 34) the Hoare annotation is: true [2020-07-21 23:39:11,319 INFO L268 CegarLoopResult]: For program point L26(lines 26 29) no Hoare annotation was computed. [2020-07-21 23:39:11,319 INFO L268 CegarLoopResult]: For program point L24(lines 24 29) no Hoare annotation was computed. [2020-07-21 23:39:11,320 INFO L268 CegarLoopResult]: For program point L26-2(lines 24 29) no Hoare annotation was computed. [2020-07-21 23:39:11,320 INFO L264 CegarLoopResult]: At program point L22-2(lines 22 31) the Hoare annotation is: (= (mod main_~l~0 4294967296) (mod (+ main_~j~0 main_~k~0 main_~i~0) 4294967296)) [2020-07-21 23:39:11,321 INFO L264 CegarLoopResult]: At program point L22-3(lines 22 31) the Hoare annotation is: (= (mod (+ main_~j~0 main_~k~0 main_~i~0) 4294967296) (mod main_~l~0 4294967296)) [2020-07-21 23:39:11,321 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-07-21 23:39:11,321 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-07-21 23:39:11,321 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-07-21 23:39:11,321 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-07-21 23:39:11,321 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-07-21 23:39:11,322 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-07-21 23:39:11,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 11:39:11 BoogieIcfgContainer [2020-07-21 23:39:11,351 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 23:39:11,355 INFO L168 Benchmark]: Toolchain (without parser) took 81142.66 ms. Allocated memory was 138.4 MB in the beginning and 247.5 MB in the end (delta: 109.1 MB). Free memory was 103.6 MB in the beginning and 212.2 MB in the end (delta: -108.6 MB). Peak memory consumption was 117.9 MB. Max. memory is 7.1 GB. [2020-07-21 23:39:11,362 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 138.4 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-21 23:39:11,364 INFO L168 Benchmark]: CACSL2BoogieTranslator took 277.38 ms. Allocated memory is still 138.4 MB. Free memory was 103.2 MB in the beginning and 93.5 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-07-21 23:39:11,366 INFO L168 Benchmark]: Boogie Preprocessor took 148.40 ms. Allocated memory was 138.4 MB in the beginning and 202.9 MB in the end (delta: 64.5 MB). Free memory was 93.5 MB in the beginning and 182.0 MB in the end (delta: -88.5 MB). Peak memory consumption was 15.0 MB. Max. memory is 7.1 GB. [2020-07-21 23:39:11,367 INFO L168 Benchmark]: RCFGBuilder took 371.29 ms. Allocated memory is still 202.9 MB. Free memory was 182.0 MB in the beginning and 168.5 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2020-07-21 23:39:11,368 INFO L168 Benchmark]: TraceAbstraction took 80333.00 ms. Allocated memory was 202.9 MB in the beginning and 247.5 MB in the end (delta: 44.6 MB). Free memory was 167.8 MB in the beginning and 212.2 MB in the end (delta: -44.4 MB). Peak memory consumption was 117.6 MB. Max. memory is 7.1 GB. [2020-07-21 23:39:11,383 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 138.4 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 277.38 ms. Allocated memory is still 138.4 MB. Free memory was 103.2 MB in the beginning and 93.5 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 148.40 ms. Allocated memory was 138.4 MB in the beginning and 202.9 MB in the end (delta: 64.5 MB). Free memory was 93.5 MB in the beginning and 182.0 MB in the end (delta: -88.5 MB). Peak memory consumption was 15.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 371.29 ms. Allocated memory is still 202.9 MB. Free memory was 182.0 MB in the beginning and 168.5 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 80333.00 ms. Allocated memory was 202.9 MB in the beginning and 247.5 MB in the end (delta: 44.6 MB). Free memory was 167.8 MB in the beginning and 212.2 MB in the end (delta: -44.4 MB). Peak memory consumption was 117.6 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: 22]: Loop Invariant Derived loop invariant: l % 4294967296 == (j + k + i) % 4294967296 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 79.9s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 48.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 70 SDtfs, 38 SDslu, 183 SDs, 0 SdLazy, 298 SolverSat, 28 SolverUnsat, 21 SolverUnknown, 0 SolverNotchecked, 42.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 146 GetRequests, 96 SyntacticMatches, 9 SemanticMatches, 41 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 33.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=4, 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, 5 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 16 PreInvPairs, 28 NumberOfFragments, 25 HoareAnnotationTreeSize, 16 FomulaSimplifications, 42 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 161 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 29.6s InterpolantComputationTime, 84 NumberOfCodeBlocks, 77 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 136 ConstructedInterpolants, 1 QuantifiedInterpolants, 14536 SizeOfPredicates, 13 NumberOfNonLiveVariables, 231 ConjunctsInSsa, 62 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 15/52 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...