/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_FUNCTIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/nested_structure-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 13:40:13,651 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 13:40:13,654 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 13:40:13,670 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 13:40:13,670 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 13:40:13,672 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 13:40:13,674 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 13:40:13,676 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 13:40:13,679 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 13:40:13,681 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 13:40:13,685 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 13:40:13,687 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 13:40:13,687 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 13:40:13,689 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 13:40:13,693 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 13:40:13,695 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 13:40:13,697 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 13:40:13,698 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 13:40:13,701 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 13:40:13,703 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 13:40:13,706 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 13:40:13,708 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 13:40:13,710 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 13:40:13,711 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 13:40:13,715 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 13:40:13,733 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 13:40:13,734 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 13:40:13,735 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 13:40:13,737 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 13:40:13,757 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 13:40:13,757 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 13:40:13,759 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 13:40:13,760 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 13:40:13,760 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 13:40:13,760 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 13:40:13,761 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 13:40:13,761 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 13:40:13,761 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 13:40:13,761 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 13:40:13,761 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 13:40:13,762 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 13:40:13,762 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 13:40:13,762 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 13:40:13,762 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 13:40:13,762 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 13:40:13,763 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 13:40:13,763 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 13:40:13,763 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 13:40:13,764 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 13:40:13,764 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 13:40:13,764 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 13:40:13,764 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 13:40:13,765 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 13:40:13,765 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 13:40:13,765 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 13:40:13,765 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:40:13,766 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 13:40:13,766 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 13:40:13,766 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_FUNCTIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 2 [2020-07-21 13:40:14,135 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 13:40:14,168 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 13:40:14,174 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 13:40:14,177 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 13:40:14,178 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 13:40:14,182 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/nested_structure-2.i [2020-07-21 13:40:14,292 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6973e6adf/b43d7329ba974e2b852d3683f6b15fe6/FLAG509c42cd8 [2020-07-21 13:40:14,902 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 13:40:14,903 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/nested_structure-2.i [2020-07-21 13:40:14,909 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6973e6adf/b43d7329ba974e2b852d3683f6b15fe6/FLAG509c42cd8 [2020-07-21 13:40:15,236 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6973e6adf/b43d7329ba974e2b852d3683f6b15fe6 [2020-07-21 13:40:15,247 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 13:40:15,250 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 13:40:15,251 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 13:40:15,251 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 13:40:15,255 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 13:40:15,255 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:40:15" (1/1) ... [2020-07-21 13:40:15,258 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fc7c5b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:40:15, skipping insertion in model container [2020-07-21 13:40:15,259 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:40:15" (1/1) ... [2020-07-21 13:40:15,270 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 13:40:15,297 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 13:40:15,554 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 13:40:15,575 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 13:40:15,601 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 13:40:15,626 INFO L208 MainTranslator]: Completed translation [2020-07-21 13:40:15,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:40:15 WrapperNode [2020-07-21 13:40:15,627 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 13:40:15,628 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 13:40:15,629 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 13:40:15,629 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 13:40:15,752 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:40:15" (1/1) ... [2020-07-21 13:40:15,753 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:40:15" (1/1) ... [2020-07-21 13:40:15,784 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:40:15" (1/1) ... [2020-07-21 13:40:15,784 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:40:15" (1/1) ... [2020-07-21 13:40:15,811 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:40:15" (1/1) ... [2020-07-21 13:40:15,817 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:40:15" (1/1) ... [2020-07-21 13:40:15,826 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:40:15" (1/1) ... [2020-07-21 13:40:15,829 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 13:40:15,831 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 13:40:15,831 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 13:40:15,831 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 13:40:15,833 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:40:15" (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 13:40:15,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 13:40:15,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 13:40:15,918 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-21 13:40:15,918 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 13:40:15,918 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 13:40:15,918 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-21 13:40:15,919 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-07-21 13:40:15,919 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-07-21 13:40:15,919 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-07-21 13:40:15,919 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 13:40:15,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 13:40:15,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-21 13:40:15,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-07-21 13:40:15,920 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-21 13:40:15,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 13:40:15,921 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 13:40:15,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 13:40:15,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 13:40:15,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 13:40:15,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-21 13:40:16,233 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 13:40:16,234 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-21 13:40:16,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:40:16 BoogieIcfgContainer [2020-07-21 13:40:16,239 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 13:40:16,240 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 13:40:16,241 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 13:40:16,246 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 13:40:16,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 01:40:15" (1/3) ... [2020-07-21 13:40:16,249 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f9fa9ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:40:16, skipping insertion in model container [2020-07-21 13:40:16,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:40:15" (2/3) ... [2020-07-21 13:40:16,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f9fa9ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:40:16, skipping insertion in model container [2020-07-21 13:40:16,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:40:16" (3/3) ... [2020-07-21 13:40:16,254 INFO L109 eAbstractionObserver]: Analyzing ICFG nested_structure-2.i [2020-07-21 13:40:16,272 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 13:40:16,285 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 13:40:16,328 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 13:40:16,424 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 13:40:16,424 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 13:40:16,424 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 13:40:16,424 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 13:40:16,425 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 13:40:16,425 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 13:40:16,425 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 13:40:16,425 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 13:40:16,461 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-07-21 13:40:16,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-21 13:40:16,473 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:40:16,474 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 13:40:16,475 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:40:16,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:40:16,488 INFO L82 PathProgramCache]: Analyzing trace with hash -715594688, now seen corresponding path program 1 times [2020-07-21 13:40:16,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:40:16,509 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [692648354] [2020-07-21 13:40:16,510 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 13:40:16,697 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:40:16,698 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:40:16,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 28 conjunts are in the unsatisfiable core [2020-07-21 13:40:16,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:40:16,943 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:40:16,944 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 55 [2020-07-21 13:40:16,950 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 13:40:16,956 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 13:40:16,957 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 13:40:17,060 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2020-07-21 13:40:17,062 INFO L624 ElimStorePlain]: treesize reduction 8, result has 97.3 percent of original size [2020-07-21 13:40:17,070 INFO L440 ElimStorePlain]: Different costs {1=[|v_#memory_int_5|], 6=[|v_#memory_$Pointer$.offset_5|, |#memory_$Pointer$.base|, |#memory_$Pointer$.offset|], 11=[|v_#memory_$Pointer$.base_5|]} [2020-07-21 13:40:17,077 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-21 13:40:17,079 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-21 13:40:17,081 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 13:40:17,111 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:40:17,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 13:40:17,210 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:40:17,212 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 178 treesize of output 197 [2020-07-21 13:40:17,221 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[5, 3, 2, 1] term [2020-07-21 13:40:17,222 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 13:40:17,227 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2020-07-21 13:40:17,317 INFO L624 ElimStorePlain]: treesize reduction 284, result has 24.9 percent of original size [2020-07-21 13:40:17,327 INFO L544 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-07-21 13:40:17,344 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:40:17,352 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2020-07-21 13:40:17,353 INFO L544 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2020-07-21 13:40:17,368 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:40:17,386 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:40:17,387 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 20 [2020-07-21 13:40:17,391 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 13:40:17,394 INFO L544 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2020-07-21 13:40:17,398 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:40:17,399 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 5 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 13:40:17,399 INFO L244 ElimStorePlain]: Needed 7 recursive calls to eliminate 7 variables, input treesize:306, output treesize:3 [2020-07-21 13:40:17,438 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 13:40:17,438 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:40:17,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [692648354] [2020-07-21 13:40:17,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:40:17,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 13:40:17,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990234569] [2020-07-21 13:40:17,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 13:40:17,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:40:17,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 13:40:17,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 13:40:17,483 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 5 states. [2020-07-21 13:40:17,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:40:17,568 INFO L93 Difference]: Finished difference Result 25 states and 24 transitions. [2020-07-21 13:40:17,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 13:40:17,572 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-07-21 13:40:17,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:40:17,583 INFO L225 Difference]: With dead ends: 25 [2020-07-21 13:40:17,584 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 13:40:17,589 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-21 13:40:17,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 13:40:17,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 13:40:17,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 13:40:17,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 13:40:17,631 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-07-21 13:40:17,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:40:17,632 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 13:40:17,632 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 13:40:17,632 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 13:40:17,633 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 13:40:17,847 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:40:17,851 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 13:40:17,946 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 13:40:17,947 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-21 13:40:17,948 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 13:40:17,948 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 13:40:17,948 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-21 13:40:17,948 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 13:40:17,949 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 13:40:17,949 INFO L264 CegarLoopResult]: At program point L33(line 33) the Hoare annotation is: (= 4 |main_#t~mem4|) [2020-07-21 13:40:17,949 INFO L268 CegarLoopResult]: For program point L33-1(line 33) no Hoare annotation was computed. [2020-07-21 13:40:17,950 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 27 35) the Hoare annotation is: true [2020-07-21 13:40:17,950 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 27 35) no Hoare annotation was computed. [2020-07-21 13:40:17,950 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 27 35) no Hoare annotation was computed. [2020-07-21 13:40:17,951 INFO L268 CegarLoopResult]: For program point L3-2(lines 2 7) no Hoare annotation was computed. [2020-07-21 13:40:17,951 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 2 7) the Hoare annotation is: true [2020-07-21 13:40:17,951 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 2 7) no Hoare annotation was computed. [2020-07-21 13:40:17,951 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-07-21 13:40:17,951 INFO L268 CegarLoopResult]: For program point L3(lines 3 5) no Hoare annotation was computed. [2020-07-21 13:40:17,952 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-07-21 13:40:17,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 01:40:17 BoogieIcfgContainer [2020-07-21 13:40:17,962 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 13:40:17,965 INFO L168 Benchmark]: Toolchain (without parser) took 2716.48 ms. Allocated memory was 136.8 MB in the beginning and 201.9 MB in the end (delta: 65.0 MB). Free memory was 101.3 MB in the beginning and 89.8 MB in the end (delta: 11.4 MB). Peak memory consumption was 76.5 MB. Max. memory is 7.1 GB. [2020-07-21 13:40:17,967 INFO L168 Benchmark]: CDTParser took 1.12 ms. Allocated memory is still 136.8 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-07-21 13:40:17,968 INFO L168 Benchmark]: CACSL2BoogieTranslator took 376.73 ms. Allocated memory is still 136.8 MB. Free memory was 101.0 MB in the beginning and 90.7 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-07-21 13:40:17,969 INFO L168 Benchmark]: Boogie Preprocessor took 201.43 ms. Allocated memory was 136.8 MB in the beginning and 201.9 MB in the end (delta: 65.0 MB). Free memory was 90.7 MB in the beginning and 179.8 MB in the end (delta: -89.1 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2020-07-21 13:40:17,970 INFO L168 Benchmark]: RCFGBuilder took 408.54 ms. Allocated memory is still 201.9 MB. Free memory was 179.8 MB in the beginning and 163.5 MB in the end (delta: 16.3 MB). Peak memory consumption was 16.3 MB. Max. memory is 7.1 GB. [2020-07-21 13:40:17,971 INFO L168 Benchmark]: TraceAbstraction took 1722.10 ms. Allocated memory is still 201.9 MB. Free memory was 162.8 MB in the beginning and 89.8 MB in the end (delta: 73.0 MB). Peak memory consumption was 73.0 MB. Max. memory is 7.1 GB. [2020-07-21 13:40:17,976 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.12 ms. Allocated memory is still 136.8 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 376.73 ms. Allocated memory is still 136.8 MB. Free memory was 101.0 MB in the beginning and 90.7 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 201.43 ms. Allocated memory was 136.8 MB in the beginning and 201.9 MB in the end (delta: 65.0 MB). Free memory was 90.7 MB in the beginning and 179.8 MB in the end (delta: -89.1 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 408.54 ms. Allocated memory is still 201.9 MB. Free memory was 179.8 MB in the beginning and 163.5 MB in the end (delta: 16.3 MB). Peak memory consumption was 16.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1722.10 ms. Allocated memory is still 201.9 MB. Free memory was 162.8 MB in the beginning and 89.8 MB in the end (delta: 73.0 MB). Peak memory consumption was 73.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.4s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 12 SDtfs, 5 SDslu, 31 SDs, 0 SdLazy, 8 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 6 NumberOfFragments, 8 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 135 SizeOfPredicates, 14 NumberOfNonLiveVariables, 88 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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...