/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_VARIABLES --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/ldv-regression/test29-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 17:15:12,863 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 17:15:12,865 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 17:15:12,885 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 17:15:12,886 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 17:15:12,888 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 17:15:12,890 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 17:15:12,902 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 17:15:12,905 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 17:15:12,907 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 17:15:12,909 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 17:15:12,910 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 17:15:12,910 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 17:15:12,914 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 17:15:12,916 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 17:15:12,918 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 17:15:12,920 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 17:15:12,923 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 17:15:12,924 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 17:15:12,930 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 17:15:12,935 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 17:15:12,939 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 17:15:12,940 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 17:15:12,941 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 17:15:12,943 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 17:15:12,955 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 17:15:12,955 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 17:15:12,957 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 17:15:12,958 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 17:15:12,984 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 17:15:12,985 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 17:15:12,986 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 17:15:12,986 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 17:15:12,986 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 17:15:12,987 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 17:15:12,987 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 17:15:12,987 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 17:15:12,987 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 17:15:12,987 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 17:15:12,988 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 17:15:12,988 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 17:15:12,988 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 17:15:12,988 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 17:15:12,988 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 17:15:12,989 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 17:15:12,989 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 17:15:12,989 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 17:15:12,989 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 17:15:12,989 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 17:15:12,990 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 17:15:12,990 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 17:15:12,990 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 17:15:12,990 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 17:15:12,990 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 17:15:12,991 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 17:15:12,991 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:15:12,991 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 17:15:12,991 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 17:15:12,991 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_VARIABLES 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 [2020-07-20 17:15:13,300 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 17:15:13,312 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 17:15:13,316 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 17:15:13,317 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 17:15:13,318 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 17:15:13,318 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test29-2.c [2020-07-20 17:15:13,380 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f8b325ec/4a0a497ff91d48c6bf4ac318a2976360/FLAG08caf5bf0 [2020-07-20 17:15:13,793 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 17:15:13,794 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test29-2.c [2020-07-20 17:15:13,800 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f8b325ec/4a0a497ff91d48c6bf4ac318a2976360/FLAG08caf5bf0 [2020-07-20 17:15:14,181 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f8b325ec/4a0a497ff91d48c6bf4ac318a2976360 [2020-07-20 17:15:14,192 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 17:15:14,195 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 17:15:14,196 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 17:15:14,197 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 17:15:14,200 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 17:15:14,202 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 05:15:14" (1/1) ... [2020-07-20 17:15:14,205 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c380e97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:15:14, skipping insertion in model container [2020-07-20 17:15:14,205 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 05:15:14" (1/1) ... [2020-07-20 17:15:14,213 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 17:15:14,232 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 17:15:14,407 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 17:15:14,420 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 17:15:14,438 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 17:15:14,455 INFO L208 MainTranslator]: Completed translation [2020-07-20 17:15:14,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:15:14 WrapperNode [2020-07-20 17:15:14,456 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 17:15:14,457 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 17:15:14,457 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 17:15:14,457 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 17:15:14,555 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:15:14" (1/1) ... [2020-07-20 17:15:14,556 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:15:14" (1/1) ... [2020-07-20 17:15:14,564 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:15:14" (1/1) ... [2020-07-20 17:15:14,565 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:15:14" (1/1) ... [2020-07-20 17:15:14,574 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:15:14" (1/1) ... [2020-07-20 17:15:14,579 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:15:14" (1/1) ... [2020-07-20 17:15:14,584 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:15:14" (1/1) ... [2020-07-20 17:15:14,591 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 17:15:14,592 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 17:15:14,592 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 17:15:14,592 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 17:15:14,594 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:15:14" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 17:15:14,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 17:15:14,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 17:15:14,671 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 17:15:14,672 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 17:15:14,672 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 17:15:14,673 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 17:15:14,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 17:15:14,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 17:15:14,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 17:15:14,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 17:15:14,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 17:15:14,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 17:15:14,905 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 17:15:14,906 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-20 17:15:14,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 05:15:14 BoogieIcfgContainer [2020-07-20 17:15:14,910 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 17:15:14,911 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 17:15:14,911 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 17:15:14,915 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 17:15:14,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 05:15:14" (1/3) ... [2020-07-20 17:15:14,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c0d0943 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 05:15:14, skipping insertion in model container [2020-07-20 17:15:14,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:15:14" (2/3) ... [2020-07-20 17:15:14,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c0d0943 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 05:15:14, skipping insertion in model container [2020-07-20 17:15:14,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 05:15:14" (3/3) ... [2020-07-20 17:15:14,919 INFO L109 eAbstractionObserver]: Analyzing ICFG test29-2.c [2020-07-20 17:15:14,930 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 17:15:14,937 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 17:15:14,951 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 17:15:14,976 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 17:15:14,976 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 17:15:14,976 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 17:15:14,976 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 17:15:14,977 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 17:15:14,977 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 17:15:14,977 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 17:15:14,977 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 17:15:14,993 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-07-20 17:15:14,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-20 17:15:14,998 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:15:15,000 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 17:15:15,000 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:15:15,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:15:15,006 INFO L82 PathProgramCache]: Analyzing trace with hash 668850033, now seen corresponding path program 1 times [2020-07-20 17:15:15,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:15:15,016 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1119766326] [2020-07-20 17:15:15,016 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 [2020-07-20 17:15:15,179 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 17:15:15,179 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:15:15,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-20 17:15:15,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:15:15,269 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 5 treesize of output 3 [2020-07-20 17:15:15,271 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 17:15:15,286 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 17:15:15,287 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-20 17:15:15,287 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:7 [2020-07-20 17:15:15,363 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 17:15:15,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 17:15:15,380 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 17:15:15,381 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1119766326] [2020-07-20 17:15:15,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 17:15:15,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-20 17:15:15,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377189662] [2020-07-20 17:15:15,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 17:15:15,390 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:15:15,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 17:15:15,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-20 17:15:15,403 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 7 states. [2020-07-20 17:15:15,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:15:15,597 INFO L93 Difference]: Finished difference Result 37 states and 47 transitions. [2020-07-20 17:15:15,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-20 17:15:15,600 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-07-20 17:15:15,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:15:15,611 INFO L225 Difference]: With dead ends: 37 [2020-07-20 17:15:15,611 INFO L226 Difference]: Without dead ends: 21 [2020-07-20 17:15:15,616 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-07-20 17:15:15,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-07-20 17:15:15,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 16. [2020-07-20 17:15:15,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-07-20 17:15:15,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2020-07-20 17:15:15,660 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 13 [2020-07-20 17:15:15,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:15:15,661 INFO L479 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2020-07-20 17:15:15,661 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 17:15:15,661 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2020-07-20 17:15:15,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-20 17:15:15,662 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:15:15,662 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 17:15:15,876 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:15:15,876 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:15:15,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:15:15,877 INFO L82 PathProgramCache]: Analyzing trace with hash 667002991, now seen corresponding path program 1 times [2020-07-20 17:15:15,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:15:15,878 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [595704753] [2020-07-20 17:15:15,878 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 [2020-07-20 17:15:15,946 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 17:15:15,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:15:15,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-20 17:15:15,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:15:15,990 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 17:15:15,991 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 15 treesize of output 19 [2020-07-20 17:15:15,992 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 17:15:15,997 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 17:15:15,997 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-20 17:15:15,998 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:14, output treesize:4 [2020-07-20 17:15:16,013 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 17:15:16,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 17:15:16,022 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 17:15:16,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [595704753] [2020-07-20 17:15:16,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 17:15:16,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 17:15:16,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244881567] [2020-07-20 17:15:16,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 17:15:16,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:15:16,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 17:15:16,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 17:15:16,026 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 5 states. [2020-07-20 17:15:16,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:15:16,073 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2020-07-20 17:15:16,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 17:15:16,074 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-07-20 17:15:16,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:15:16,075 INFO L225 Difference]: With dead ends: 21 [2020-07-20 17:15:16,075 INFO L226 Difference]: Without dead ends: 14 [2020-07-20 17:15:16,077 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-20 17:15:16,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-07-20 17:15:16,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-07-20 17:15:16,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-07-20 17:15:16,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 13 transitions. [2020-07-20 17:15:16,082 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 13 transitions. Word has length 13 [2020-07-20 17:15:16,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:15:16,082 INFO L479 AbstractCegarLoop]: Abstraction has 14 states and 13 transitions. [2020-07-20 17:15:16,082 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 17:15:16,082 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2020-07-20 17:15:16,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-20 17:15:16,083 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:15:16,083 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 17:15:16,293 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:15:16,294 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:15:16,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:15:16,295 INFO L82 PathProgramCache]: Analyzing trace with hash -1851109901, now seen corresponding path program 1 times [2020-07-20 17:15:16,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:15:16,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1230797285] [2020-07-20 17:15:16,296 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 [2020-07-20 17:15:16,355 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 17:15:16,355 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:15:16,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-20 17:15:16,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:15:16,375 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-07-20 17:15:16,376 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 17:15:16,381 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 17:15:16,381 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 17:15:16,382 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-07-20 17:15:16,400 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 17:15:16,403 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 17:15:16,474 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-20 17:15:16,479 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 17:15:16,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 17:15:16,491 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 17:15:16,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1230797285] [2020-07-20 17:15:16,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 17:15:16,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 17:15:16,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65171318] [2020-07-20 17:15:16,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 17:15:16,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:15:16,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 17:15:16,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 17:15:16,494 INFO L87 Difference]: Start difference. First operand 14 states and 13 transitions. Second operand 5 states. [2020-07-20 17:15:16,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:15:16,582 INFO L93 Difference]: Finished difference Result 14 states and 13 transitions. [2020-07-20 17:15:16,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 17:15:16,582 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-07-20 17:15:16,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:15:16,583 INFO L225 Difference]: With dead ends: 14 [2020-07-20 17:15:16,583 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 17:15:16,584 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-07-20 17:15:16,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 17:15:16,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 17:15:16,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 17:15:16,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 17:15:16,585 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-07-20 17:15:16,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:15:16,585 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 17:15:16,586 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 17:15:16,586 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 17:15:16,586 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 17:15:16,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:15:16,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 17:15:16,851 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-20 17:15:16,851 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-20 17:15:16,852 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 17:15:16,852 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 17:15:16,852 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 17:15:16,852 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 17:15:16,852 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 17:15:16,853 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 11 29) no Hoare annotation was computed. [2020-07-20 17:15:16,853 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-07-20 17:15:16,853 INFO L268 CegarLoopResult]: For program point L21-2(lines 21 23) no Hoare annotation was computed. [2020-07-20 17:15:16,853 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-07-20 17:15:16,853 INFO L268 CegarLoopResult]: For program point L15-2(line 15) no Hoare annotation was computed. [2020-07-20 17:15:16,853 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 11 29) no Hoare annotation was computed. [2020-07-20 17:15:16,854 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 27) no Hoare annotation was computed. [2020-07-20 17:15:16,854 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 11 29) the Hoare annotation is: true [2020-07-20 17:15:16,854 INFO L264 CegarLoopResult]: At program point L22(lines 12 29) the Hoare annotation is: false [2020-07-20 17:15:16,854 INFO L268 CegarLoopResult]: For program point L16(lines 16 20) no Hoare annotation was computed. [2020-07-20 17:15:16,854 INFO L268 CegarLoopResult]: For program point L16-2(lines 16 20) no Hoare annotation was computed. [2020-07-20 17:15:16,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 05:15:16 BoogieIcfgContainer [2020-07-20 17:15:16,865 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 17:15:16,868 INFO L168 Benchmark]: Toolchain (without parser) took 2674.21 ms. Allocated memory was 138.4 MB in the beginning and 235.4 MB in the end (delta: 97.0 MB). Free memory was 103.2 MB in the beginning and 187.2 MB in the end (delta: -84.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-07-20 17:15:16,868 INFO L168 Benchmark]: CDTParser took 0.22 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. [2020-07-20 17:15:16,869 INFO L168 Benchmark]: CACSL2BoogieTranslator took 259.82 ms. Allocated memory is still 138.4 MB. Free memory was 102.8 MB in the beginning and 92.9 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-07-20 17:15:16,870 INFO L168 Benchmark]: Boogie Preprocessor took 134.27 ms. Allocated memory was 138.4 MB in the beginning and 202.9 MB in the end (delta: 64.5 MB). Free memory was 92.9 MB in the beginning and 181.0 MB in the end (delta: -88.1 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2020-07-20 17:15:16,871 INFO L168 Benchmark]: RCFGBuilder took 318.23 ms. Allocated memory is still 202.9 MB. Free memory was 181.0 MB in the beginning and 166.9 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2020-07-20 17:15:16,872 INFO L168 Benchmark]: TraceAbstraction took 1954.54 ms. Allocated memory was 202.9 MB in the beginning and 235.4 MB in the end (delta: 32.5 MB). Free memory was 166.3 MB in the beginning and 187.2 MB in the end (delta: -20.9 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. [2020-07-20 17:15:16,877 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 259.82 ms. Allocated memory is still 138.4 MB. Free memory was 102.8 MB in the beginning and 92.9 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 134.27 ms. Allocated memory was 138.4 MB in the beginning and 202.9 MB in the end (delta: 64.5 MB). Free memory was 92.9 MB in the beginning and 181.0 MB in the end (delta: -88.1 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 318.23 ms. Allocated memory is still 202.9 MB. Free memory was 181.0 MB in the beginning and 166.9 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1954.54 ms. Allocated memory was 202.9 MB in the beginning and 235.4 MB in the end (delta: 32.5 MB). Free memory was 166.3 MB in the beginning and 187.2 MB in the end (delta: -20.9 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 27]: 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: 12]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.8s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 29 SDtfs, 31 SDslu, 84 SDs, 0 SdLazy, 72 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s 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, 3 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 5 NumberOfFragments, 5 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 39 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 36 ConstructedInterpolants, 1 QuantifiedInterpolants, 1548 SizeOfPredicates, 18 NumberOfNonLiveVariables, 173 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...