/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 DAGSIZE --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/loop-invgen/id_trans.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 20:32:53,650 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 20:32:53,653 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 20:32:53,673 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 20:32:53,673 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 20:32:53,676 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 20:32:53,678 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 20:32:53,690 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 20:32:53,691 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 20:32:53,692 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 20:32:53,693 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 20:32:53,695 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 20:32:53,696 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 20:32:53,698 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 20:32:53,699 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 20:32:53,700 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 20:32:53,702 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 20:32:53,702 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 20:32:53,707 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 20:32:53,710 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 20:32:53,715 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 20:32:53,715 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 20:32:53,719 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 20:32:53,720 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 20:32:53,724 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 20:32:53,739 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 20:32:53,740 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 20:32:53,742 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 20:32:53,744 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 20:32:53,764 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 20:32:53,764 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 20:32:53,766 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 20:32:53,766 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 20:32:53,767 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 20:32:53,767 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 20:32:53,767 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 20:32:53,767 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 20:32:53,768 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 20:32:53,768 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 20:32:53,769 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 20:32:53,769 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 20:32:53,769 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 20:32:53,770 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 20:32:53,770 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 20:32:53,770 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 20:32:53,771 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 20:32:53,771 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 20:32:53,771 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 20:32:53,771 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 20:32:53,771 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 20:32:53,772 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 20:32:53,772 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 20:32:53,772 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 20:32:53,772 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 20:32:53,772 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 20:32:53,773 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:32:53,773 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 20:32:53,773 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 20:32:53,773 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 -> DAGSIZE 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 20:32:54,121 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 20:32:54,141 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 20:32:54,146 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 20:32:54,148 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 20:32:54,148 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 20:32:54,149 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/id_trans.i [2020-07-21 20:32:54,226 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc17072f2/9fc9e22fb5e746079f53edd6b9283410/FLAG13bfb585a [2020-07-21 20:32:54,675 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 20:32:54,677 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_trans.i [2020-07-21 20:32:54,685 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc17072f2/9fc9e22fb5e746079f53edd6b9283410/FLAG13bfb585a [2020-07-21 20:32:55,059 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc17072f2/9fc9e22fb5e746079f53edd6b9283410 [2020-07-21 20:32:55,071 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 20:32:55,077 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 20:32:55,080 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 20:32:55,081 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 20:32:55,085 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 20:32:55,086 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:32:55" (1/1) ... [2020-07-21 20:32:55,089 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19fe720f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:32:55, skipping insertion in model container [2020-07-21 20:32:55,090 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:32:55" (1/1) ... [2020-07-21 20:32:55,099 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 20:32:55,125 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 20:32:55,331 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 20:32:55,336 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 20:32:55,356 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 20:32:55,373 INFO L208 MainTranslator]: Completed translation [2020-07-21 20:32:55,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:32:55 WrapperNode [2020-07-21 20:32:55,374 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 20:32:55,375 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 20:32:55,375 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 20:32:55,375 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 20:32:55,391 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:32:55" (1/1) ... [2020-07-21 20:32:55,391 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:32:55" (1/1) ... [2020-07-21 20:32:55,398 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:32:55" (1/1) ... [2020-07-21 20:32:55,399 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:32:55" (1/1) ... [2020-07-21 20:32:55,404 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:32:55" (1/1) ... [2020-07-21 20:32:55,409 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:32:55" (1/1) ... [2020-07-21 20:32:55,410 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:32:55" (1/1) ... [2020-07-21 20:32:55,412 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 20:32:55,413 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 20:32:55,413 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 20:32:55,413 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 20:32:55,414 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:32:55" (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 20:32:55,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 20:32:55,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 20:32:55,593 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-21 20:32:55,593 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-21 20:32:55,593 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 20:32:55,593 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 20:32:55,594 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 20:32:55,594 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-21 20:32:55,594 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-21 20:32:55,594 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 20:32:55,594 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 20:32:55,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 20:32:55,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 20:32:55,812 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 20:32:55,813 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 20:32:55,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:32:55 BoogieIcfgContainer [2020-07-21 20:32:55,817 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 20:32:55,818 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 20:32:55,818 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 20:32:55,822 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 20:32:55,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:32:55" (1/3) ... [2020-07-21 20:32:55,823 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d276425 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:32:55, skipping insertion in model container [2020-07-21 20:32:55,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:32:55" (2/3) ... [2020-07-21 20:32:55,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d276425 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:32:55, skipping insertion in model container [2020-07-21 20:32:55,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:32:55" (3/3) ... [2020-07-21 20:32:55,826 INFO L109 eAbstractionObserver]: Analyzing ICFG id_trans.i [2020-07-21 20:32:55,837 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 20:32:55,845 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 20:32:55,859 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 20:32:55,885 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 20:32:55,885 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 20:32:55,885 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 20:32:55,885 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 20:32:55,886 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 20:32:55,886 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 20:32:55,886 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 20:32:55,886 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 20:32:55,905 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-07-21 20:32:55,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-21 20:32:55,911 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:32:55,912 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 20:32:55,912 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:32:55,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:32:55,918 INFO L82 PathProgramCache]: Analyzing trace with hash -1541464652, now seen corresponding path program 1 times [2020-07-21 20:32:55,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:32:55,925 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1704379527] [2020-07-21 20:32:55,925 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 20:32:56,006 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 20:32:56,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:32:56,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 20:32:56,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:32:56,110 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 20:32:56,159 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 20:32:56,159 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 20:32:56,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1704379527] [2020-07-21 20:32:56,165 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 20:32:56,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 20:32:56,166 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094742776] [2020-07-21 20:32:56,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 20:32:56,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:32:56,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 20:32:56,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 20:32:56,190 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 5 states. [2020-07-21 20:32:56,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:32:56,316 INFO L93 Difference]: Finished difference Result 46 states and 61 transitions. [2020-07-21 20:32:56,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 20:32:56,318 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-07-21 20:32:56,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:32:56,328 INFO L225 Difference]: With dead ends: 46 [2020-07-21 20:32:56,329 INFO L226 Difference]: Without dead ends: 22 [2020-07-21 20:32:56,333 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 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 20:32:56,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-07-21 20:32:56,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-07-21 20:32:56,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-07-21 20:32:56,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2020-07-21 20:32:56,383 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 11 [2020-07-21 20:32:56,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:32:56,384 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2020-07-21 20:32:56,384 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 20:32:56,385 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2020-07-21 20:32:56,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-21 20:32:56,386 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:32:56,387 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 20:32:56,601 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:32:56,601 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:32:56,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:32:56,603 INFO L82 PathProgramCache]: Analyzing trace with hash -621797359, now seen corresponding path program 1 times [2020-07-21 20:32:56,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:32:56,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [433852961] [2020-07-21 20:32:56,604 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 20:32:56,640 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 20:32:56,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:32:56,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 20:32:56,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:32:56,668 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 20:32:56,698 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 20:32:56,699 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 20:32:56,699 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [433852961] [2020-07-21 20:32:56,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 20:32:56,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 20:32:56,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477593048] [2020-07-21 20:32:56,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 20:32:56,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:32:56,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 20:32:56,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 20:32:56,704 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 5 states. [2020-07-21 20:32:56,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:32:56,774 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2020-07-21 20:32:56,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 20:32:56,775 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-07-21 20:32:56,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:32:56,777 INFO L225 Difference]: With dead ends: 28 [2020-07-21 20:32:56,777 INFO L226 Difference]: Without dead ends: 26 [2020-07-21 20:32:56,779 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 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 20:32:56,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-07-21 20:32:56,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-07-21 20:32:56,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-07-21 20:32:56,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2020-07-21 20:32:56,798 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 16 [2020-07-21 20:32:56,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:32:56,799 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2020-07-21 20:32:56,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 20:32:56,799 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2020-07-21 20:32:56,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-21 20:32:56,800 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:32:56,801 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 20:32:57,001 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:32:57,002 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:32:57,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:32:57,004 INFO L82 PathProgramCache]: Analyzing trace with hash -561745487, now seen corresponding path program 1 times [2020-07-21 20:32:57,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:32:57,005 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1550477324] [2020-07-21 20:32:57,005 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 20:32:57,063 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 20:32:57,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 20:32:57,064 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 20:32:57,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 20:32:57,085 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 20:32:57,101 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 20:32:57,101 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 20:32:57,314 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:32:57,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 08:32:57 BoogieIcfgContainer [2020-07-21 20:32:57,341 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 20:32:57,344 INFO L168 Benchmark]: Toolchain (without parser) took 2269.60 ms. Allocated memory was 142.6 MB in the beginning and 200.3 MB in the end (delta: 57.7 MB). Free memory was 99.7 MB in the beginning and 112.4 MB in the end (delta: -12.7 MB). Peak memory consumption was 45.0 MB. Max. memory is 7.1 GB. [2020-07-21 20:32:57,345 INFO L168 Benchmark]: CDTParser took 0.53 ms. Allocated memory is still 142.6 MB. Free memory was 117.5 MB in the beginning and 117.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-07-21 20:32:57,346 INFO L168 Benchmark]: CACSL2BoogieTranslator took 293.90 ms. Allocated memory is still 142.6 MB. Free memory was 99.5 MB in the beginning and 89.9 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-07-21 20:32:57,347 INFO L168 Benchmark]: Boogie Preprocessor took 37.82 ms. Allocated memory is still 142.6 MB. Free memory was 89.9 MB in the beginning and 88.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 7.1 GB. [2020-07-21 20:32:57,347 INFO L168 Benchmark]: RCFGBuilder took 404.25 ms. Allocated memory was 142.6 MB in the beginning and 200.3 MB in the end (delta: 57.7 MB). Free memory was 88.3 MB in the beginning and 166.0 MB in the end (delta: -77.6 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-07-21 20:32:57,348 INFO L168 Benchmark]: TraceAbstraction took 1522.57 ms. Allocated memory is still 200.3 MB. Free memory was 166.0 MB in the beginning and 112.4 MB in the end (delta: 53.5 MB). Peak memory consumption was 53.5 MB. Max. memory is 7.1 GB. [2020-07-21 20:32:57,352 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.53 ms. Allocated memory is still 142.6 MB. Free memory was 117.5 MB in the beginning and 117.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 293.90 ms. Allocated memory is still 142.6 MB. Free memory was 99.5 MB in the beginning and 89.9 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 37.82 ms. Allocated memory is still 142.6 MB. Free memory was 89.9 MB in the beginning and 88.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 404.25 ms. Allocated memory was 142.6 MB in the beginning and 200.3 MB in the end (delta: 57.7 MB). Free memory was 88.3 MB in the beginning and 166.0 MB in the end (delta: -77.6 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1522.57 ms. Allocated memory is still 200.3 MB. Free memory was 166.0 MB in the beginning and 112.4 MB in the end (delta: 53.5 MB). Peak memory consumption was 53.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 8]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] int idBitLength, material_length, nlen; [L15] int j, k; [L16] nlen = __VERIFIER_nondet_int() [L17] idBitLength = __VERIFIER_nondet_int() [L18] material_length = __VERIFIER_nondet_int() [L19] COND FALSE !(!( nlen == idBitLength / 32 )) [L20] j = 0 VAL [idBitLength=9, j=0, material_length=1, nlen=0] [L20] COND TRUE (j < idBitLength / 8) && (j < material_length) VAL [idBitLength=9, j=0, material_length=1, nlen=0] [L21] CALL __VERIFIER_assert( 0 <= j) VAL [\old(cond)=1] [L7] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L21] RET __VERIFIER_assert( 0 <= j) VAL [idBitLength=9, j=0, material_length=1, nlen=0] [L22] CALL __VERIFIER_assert( j < material_length ) VAL [\old(cond)=1] [L7] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L22] RET __VERIFIER_assert( j < material_length ) VAL [idBitLength=9, j=0, material_length=1, nlen=0] [L23] CALL __VERIFIER_assert( 0 <= j/4 ) VAL [\old(cond)=1] [L7] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L23] RET __VERIFIER_assert( 0 <= j/4 ) VAL [idBitLength=9, j=0, material_length=1, nlen=0] [L24] CALL __VERIFIER_assert( j/4 < nlen) VAL [\old(cond)=0] [L7] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L8] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.4s, OverallIterations: 3, TraceHistogramMax: 4, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 42 SDtfs, 13 SDslu, 100 SDs, 0 SdLazy, 46 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=2, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 53 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 25 ConstructedInterpolants, 0 QuantifiedInterpolants, 525 SizeOfPredicates, 4 NumberOfNonLiveVariables, 74 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 2/2 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 incorrect! Received shutdown request...