/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-with-pointer/simple-recursive.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 20:18:09,731 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 20:18:09,733 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 20:18:09,757 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 20:18:09,757 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 20:18:09,758 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 20:18:09,760 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 20:18:09,762 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 20:18:09,763 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 20:18:09,764 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 20:18:09,765 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 20:18:09,767 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 20:18:09,767 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 20:18:09,768 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 20:18:09,769 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 20:18:09,770 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 20:18:09,771 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 20:18:09,772 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 20:18:09,774 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 20:18:09,776 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 20:18:09,778 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 20:18:09,779 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 20:18:09,780 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 20:18:09,781 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 20:18:09,783 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 20:18:09,796 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 20:18:09,797 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 20:18:09,798 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 20:18:09,799 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 20:18:09,823 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 20:18:09,824 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 20:18:09,825 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 20:18:09,825 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 20:18:09,825 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 20:18:09,826 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 20:18:09,826 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 20:18:09,826 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 20:18:09,826 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 20:18:09,827 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 20:18:09,827 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 20:18:09,827 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 20:18:09,827 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 20:18:09,827 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 20:18:09,827 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 20:18:09,828 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 20:18:09,828 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 20:18:09,828 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 20:18:09,828 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 20:18:09,829 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 20:18:09,829 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 20:18:09,829 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 20:18:09,829 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 20:18:09,829 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 20:18:09,830 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 20:18:09,830 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 20:18:09,830 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 20:18:09,830 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 20:18:09,830 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 20:18:09,831 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 -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SHALLOWEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SHALLOWEST; [2020-08-18 20:18:10,168 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 20:18:10,185 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 20:18:10,190 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 20:18:10,192 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 20:18:10,192 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 20:18:10,197 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-with-pointer/simple-recursive.c [2020-08-18 20:18:10,277 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a91ba3487/96c784293a02465386b8a654e9f358b7/FLAGee8c1c38e [2020-08-18 20:18:10,730 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 20:18:10,732 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-with-pointer/simple-recursive.c [2020-08-18 20:18:10,739 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a91ba3487/96c784293a02465386b8a654e9f358b7/FLAGee8c1c38e [2020-08-18 20:18:11,123 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a91ba3487/96c784293a02465386b8a654e9f358b7 [2020-08-18 20:18:11,132 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 20:18:11,133 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 20:18:11,134 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 20:18:11,135 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 20:18:11,139 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 20:18:11,140 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:18:11" (1/1) ... [2020-08-18 20:18:11,143 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a0cc214 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:18:11, skipping insertion in model container [2020-08-18 20:18:11,143 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:18:11" (1/1) ... [2020-08-18 20:18:11,151 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 20:18:11,172 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 20:18:11,380 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:18:11,393 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 20:18:11,410 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:18:11,428 INFO L208 MainTranslator]: Completed translation [2020-08-18 20:18:11,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:18:11 WrapperNode [2020-08-18 20:18:11,429 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 20:18:11,430 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 20:18:11,430 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 20:18:11,430 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 20:18:11,516 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:18:11" (1/1) ... [2020-08-18 20:18:11,517 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:18:11" (1/1) ... [2020-08-18 20:18:11,524 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:18:11" (1/1) ... [2020-08-18 20:18:11,525 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:18:11" (1/1) ... [2020-08-18 20:18:11,531 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:18:11" (1/1) ... [2020-08-18 20:18:11,532 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:18:11" (1/1) ... [2020-08-18 20:18:11,534 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:18:11" (1/1) ... [2020-08-18 20:18:11,536 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 20:18:11,536 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 20:18:11,537 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 20:18:11,537 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 20:18:11,538 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:18:11" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-08-18 20:18:11,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 20:18:11,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 20:18:11,610 INFO L138 BoogieDeclarations]: Found implementation of procedure plus [2020-08-18 20:18:11,611 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-08-18 20:18:11,611 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 20:18:11,612 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 20:18:11,612 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-08-18 20:18:11,613 INFO L130 BoogieDeclarations]: Found specification of procedure plus [2020-08-18 20:18:11,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 20:18:11,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 20:18:11,614 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 20:18:11,615 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 20:18:11,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 20:18:11,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 20:18:11,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 20:18:11,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 20:18:11,836 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 20:18:11,837 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-18 20:18:11,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:18:11 BoogieIcfgContainer [2020-08-18 20:18:11,841 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 20:18:11,842 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 20:18:11,843 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 20:18:11,846 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 20:18:11,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 08:18:11" (1/3) ... [2020-08-18 20:18:11,847 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aa83d23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:18:11, skipping insertion in model container [2020-08-18 20:18:11,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:18:11" (2/3) ... [2020-08-18 20:18:11,848 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aa83d23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:18:11, skipping insertion in model container [2020-08-18 20:18:11,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:18:11" (3/3) ... [2020-08-18 20:18:11,850 INFO L109 eAbstractionObserver]: Analyzing ICFG simple-recursive.c [2020-08-18 20:18:11,878 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 20:18:11,889 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 20:18:11,925 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 20:18:11,960 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 20:18:11,960 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 20:18:11,960 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 20:18:11,961 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 20:18:11,961 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 20:18:11,961 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 20:18:11,961 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 20:18:11,961 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 20:18:11,983 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-08-18 20:18:11,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-08-18 20:18:11,990 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:18:11,991 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:18:11,991 INFO L427 AbstractCegarLoop]: === Iteration 1 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:18:11,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:18:11,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1703201428, now seen corresponding path program 1 times [2020-08-18 20:18:12,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:18:12,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1087905674] [2020-08-18 20:18:12,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:18:12,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:12,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:18:12,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:12,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:18:12,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1087905674] [2020-08-18 20:18:12,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:18:12,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 20:18:12,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569004642] [2020-08-18 20:18:12,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 20:18:12,287 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:18:12,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 20:18:12,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 20:18:12,304 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 6 states. [2020-08-18 20:18:12,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:18:12,502 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2020-08-18 20:18:12,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 20:18:12,504 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-08-18 20:18:12,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:18:12,515 INFO L225 Difference]: With dead ends: 39 [2020-08-18 20:18:12,515 INFO L226 Difference]: Without dead ends: 18 [2020-08-18 20:18:12,522 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-18 20:18:12,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-08-18 20:18:12,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2020-08-18 20:18:12,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-08-18 20:18:12,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-08-18 20:18:12,568 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 11 [2020-08-18 20:18:12,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:18:12,569 INFO L479 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-08-18 20:18:12,569 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 20:18:12,569 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-08-18 20:18:12,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-18 20:18:12,570 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:18:12,570 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:18:12,571 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 20:18:12,571 INFO L427 AbstractCegarLoop]: === Iteration 2 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:18:12,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:18:12,572 INFO L82 PathProgramCache]: Analyzing trace with hash 1207469216, now seen corresponding path program 1 times [2020-08-18 20:18:12,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:18:12,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1893144414] [2020-08-18 20:18:12,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:18:12,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:12,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:18:12,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:12,765 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:18:12,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1893144414] [2020-08-18 20:18:12,765 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 20:18:12,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 20:18:12,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959643193] [2020-08-18 20:18:12,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 20:18:12,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:18:12,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 20:18:12,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-08-18 20:18:12,769 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 10 states. [2020-08-18 20:18:13,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:18:13,018 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2020-08-18 20:18:13,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 20:18:13,019 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 16 [2020-08-18 20:18:13,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:18:13,020 INFO L225 Difference]: With dead ends: 26 [2020-08-18 20:18:13,020 INFO L226 Difference]: Without dead ends: 23 [2020-08-18 20:18:13,022 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2020-08-18 20:18:13,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-08-18 20:18:13,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2020-08-18 20:18:13,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-08-18 20:18:13,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2020-08-18 20:18:13,030 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 16 [2020-08-18 20:18:13,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:18:13,031 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2020-08-18 20:18:13,031 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 20:18:13,031 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2020-08-18 20:18:13,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-18 20:18:13,032 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:18:13,033 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:18:13,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 20:18:13,033 INFO L427 AbstractCegarLoop]: === Iteration 3 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:18:13,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:18:13,034 INFO L82 PathProgramCache]: Analyzing trace with hash 1866674708, now seen corresponding path program 2 times [2020-08-18 20:18:13,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:18:13,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [967274364] [2020-08-18 20:18:13,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:18:13,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:13,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:18:13,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:13,257 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:18:13,258 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [967274364] [2020-08-18 20:18:13,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 20:18:13,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-18 20:18:13,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498379685] [2020-08-18 20:18:13,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-18 20:18:13,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:18:13,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-18 20:18:13,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-08-18 20:18:13,260 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 14 states. [2020-08-18 20:18:13,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:18:13,609 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2020-08-18 20:18:13,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 20:18:13,610 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 21 [2020-08-18 20:18:13,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:18:13,611 INFO L225 Difference]: With dead ends: 31 [2020-08-18 20:18:13,611 INFO L226 Difference]: Without dead ends: 28 [2020-08-18 20:18:13,612 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=124, Invalid=526, Unknown=0, NotChecked=0, Total=650 [2020-08-18 20:18:13,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-08-18 20:18:13,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2020-08-18 20:18:13,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-08-18 20:18:13,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2020-08-18 20:18:13,621 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 21 [2020-08-18 20:18:13,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:18:13,621 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2020-08-18 20:18:13,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-18 20:18:13,622 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2020-08-18 20:18:13,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-18 20:18:13,623 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:18:13,623 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:18:13,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 20:18:13,624 INFO L427 AbstractCegarLoop]: === Iteration 4 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:18:13,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:18:13,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1116654880, now seen corresponding path program 3 times [2020-08-18 20:18:13,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:18:13,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [359290847] [2020-08-18 20:18:13,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:18:13,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:13,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:18:13,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:13,897 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:18:13,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [359290847] [2020-08-18 20:18:13,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 20:18:13,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-18 20:18:13,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317448342] [2020-08-18 20:18:13,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-18 20:18:13,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:18:13,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-18 20:18:13,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2020-08-18 20:18:13,900 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 18 states. [2020-08-18 20:18:14,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:18:14,416 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2020-08-18 20:18:14,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 20:18:14,417 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 26 [2020-08-18 20:18:14,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:18:14,418 INFO L225 Difference]: With dead ends: 36 [2020-08-18 20:18:14,419 INFO L226 Difference]: Without dead ends: 33 [2020-08-18 20:18:14,420 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=208, Invalid=982, Unknown=0, NotChecked=0, Total=1190 [2020-08-18 20:18:14,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-08-18 20:18:14,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2020-08-18 20:18:14,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-08-18 20:18:14,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2020-08-18 20:18:14,428 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 26 [2020-08-18 20:18:14,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:18:14,428 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2020-08-18 20:18:14,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-18 20:18:14,429 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2020-08-18 20:18:14,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-08-18 20:18:14,430 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:18:14,430 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:18:14,430 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 20:18:14,430 INFO L427 AbstractCegarLoop]: === Iteration 5 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:18:14,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:18:14,431 INFO L82 PathProgramCache]: Analyzing trace with hash 1506163092, now seen corresponding path program 4 times [2020-08-18 20:18:14,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:18:14,431 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [387446672] [2020-08-18 20:18:14,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:18:14,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:14,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:18:14,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:14,759 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:18:14,760 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [387446672] [2020-08-18 20:18:14,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 20:18:14,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-08-18 20:18:14,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302083473] [2020-08-18 20:18:14,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-08-18 20:18:14,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:18:14,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-08-18 20:18:14,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=393, Unknown=0, NotChecked=0, Total=462 [2020-08-18 20:18:14,762 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 22 states. [2020-08-18 20:18:15,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:18:15,425 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2020-08-18 20:18:15,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-18 20:18:15,426 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 31 [2020-08-18 20:18:15,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:18:15,427 INFO L225 Difference]: With dead ends: 41 [2020-08-18 20:18:15,427 INFO L226 Difference]: Without dead ends: 38 [2020-08-18 20:18:15,430 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=313, Invalid=1579, Unknown=0, NotChecked=0, Total=1892 [2020-08-18 20:18:15,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-08-18 20:18:15,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-08-18 20:18:15,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-08-18 20:18:15,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2020-08-18 20:18:15,445 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 31 [2020-08-18 20:18:15,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:18:15,446 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2020-08-18 20:18:15,446 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-08-18 20:18:15,446 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2020-08-18 20:18:15,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-08-18 20:18:15,449 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:18:15,449 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:18:15,449 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 20:18:15,449 INFO L427 AbstractCegarLoop]: === Iteration 6 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:18:15,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:18:15,451 INFO L82 PathProgramCache]: Analyzing trace with hash 1044673952, now seen corresponding path program 5 times [2020-08-18 20:18:15,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:18:15,452 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [703941759] [2020-08-18 20:18:15,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:18:15,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:15,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:18:15,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:15,871 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:18:15,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [703941759] [2020-08-18 20:18:15,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 20:18:15,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-08-18 20:18:15,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779537929] [2020-08-18 20:18:15,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-08-18 20:18:15,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:18:15,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-08-18 20:18:15,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=556, Unknown=0, NotChecked=0, Total=650 [2020-08-18 20:18:15,874 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 26 states. [2020-08-18 20:18:16,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:18:16,744 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2020-08-18 20:18:16,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-08-18 20:18:16,745 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 36 [2020-08-18 20:18:16,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:18:16,746 INFO L225 Difference]: With dead ends: 46 [2020-08-18 20:18:16,746 INFO L226 Difference]: Without dead ends: 43 [2020-08-18 20:18:16,748 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 512 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=439, Invalid=2317, Unknown=0, NotChecked=0, Total=2756 [2020-08-18 20:18:16,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-08-18 20:18:16,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2020-08-18 20:18:16,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-08-18 20:18:16,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2020-08-18 20:18:16,756 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 36 [2020-08-18 20:18:16,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:18:16,757 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2020-08-18 20:18:16,757 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-08-18 20:18:16,757 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2020-08-18 20:18:16,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-08-18 20:18:16,758 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:18:16,758 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:18:16,759 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 20:18:16,759 INFO L427 AbstractCegarLoop]: === Iteration 7 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:18:16,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:18:16,759 INFO L82 PathProgramCache]: Analyzing trace with hash -272244460, now seen corresponding path program 6 times [2020-08-18 20:18:16,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:18:16,760 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [26885334] [2020-08-18 20:18:16,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:18:16,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:17,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:18:17,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:17,239 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:18:17,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [26885334] [2020-08-18 20:18:17,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 20:18:17,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-08-18 20:18:17,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562457229] [2020-08-18 20:18:17,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-08-18 20:18:17,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:18:17,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-08-18 20:18:17,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=747, Unknown=0, NotChecked=0, Total=870 [2020-08-18 20:18:17,243 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 30 states. [2020-08-18 20:18:18,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:18:18,441 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2020-08-18 20:18:18,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-08-18 20:18:18,441 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 41 [2020-08-18 20:18:18,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:18:18,444 INFO L225 Difference]: With dead ends: 51 [2020-08-18 20:18:18,444 INFO L226 Difference]: Without dead ends: 48 [2020-08-18 20:18:18,446 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 732 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=586, Invalid=3196, Unknown=0, NotChecked=0, Total=3782 [2020-08-18 20:18:18,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-08-18 20:18:18,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-08-18 20:18:18,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-08-18 20:18:18,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2020-08-18 20:18:18,456 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 41 [2020-08-18 20:18:18,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:18:18,457 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2020-08-18 20:18:18,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-08-18 20:18:18,457 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2020-08-18 20:18:18,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 20:18:18,459 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:18:18,459 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:18:18,459 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 20:18:18,459 INFO L427 AbstractCegarLoop]: === Iteration 8 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:18:18,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:18:18,460 INFO L82 PathProgramCache]: Analyzing trace with hash 1667333664, now seen corresponding path program 7 times [2020-08-18 20:18:18,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:18:18,471 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1531489294] [2020-08-18 20:18:18,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:18:18,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:19,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:18:19,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:19,082 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:18:19,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1531489294] [2020-08-18 20:18:19,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 20:18:19,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-08-18 20:18:19,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453957917] [2020-08-18 20:18:19,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-08-18 20:18:19,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:18:19,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-08-18 20:18:19,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=966, Unknown=0, NotChecked=0, Total=1122 [2020-08-18 20:18:19,085 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 34 states. [2020-08-18 20:18:20,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:18:20,552 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2020-08-18 20:18:20,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-08-18 20:18:20,552 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 46 [2020-08-18 20:18:20,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:18:20,553 INFO L225 Difference]: With dead ends: 56 [2020-08-18 20:18:20,553 INFO L226 Difference]: Without dead ends: 53 [2020-08-18 20:18:20,555 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=754, Invalid=4216, Unknown=0, NotChecked=0, Total=4970 [2020-08-18 20:18:20,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-08-18 20:18:20,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2020-08-18 20:18:20,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-08-18 20:18:20,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2020-08-18 20:18:20,566 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 46 [2020-08-18 20:18:20,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:18:20,566 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2020-08-18 20:18:20,567 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-08-18 20:18:20,567 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2020-08-18 20:18:20,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 20:18:20,568 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:18:20,568 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:18:20,568 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 20:18:20,568 INFO L427 AbstractCegarLoop]: === Iteration 9 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:18:20,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:18:20,569 INFO L82 PathProgramCache]: Analyzing trace with hash -168154988, now seen corresponding path program 8 times [2020-08-18 20:18:20,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:18:20,569 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [744270386] [2020-08-18 20:18:20,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:18:20,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:21,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:18:21,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:21,246 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:18:21,247 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [744270386] [2020-08-18 20:18:21,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 20:18:21,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-08-18 20:18:21,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113919226] [2020-08-18 20:18:21,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-08-18 20:18:21,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:18:21,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-08-18 20:18:21,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=1213, Unknown=0, NotChecked=0, Total=1406 [2020-08-18 20:18:21,250 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 38 states. [2020-08-18 20:18:22,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:18:22,941 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2020-08-18 20:18:22,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-08-18 20:18:22,942 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 51 [2020-08-18 20:18:22,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:18:22,944 INFO L225 Difference]: With dead ends: 61 [2020-08-18 20:18:22,944 INFO L226 Difference]: Without dead ends: 58 [2020-08-18 20:18:22,946 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1289 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=943, Invalid=5377, Unknown=0, NotChecked=0, Total=6320 [2020-08-18 20:18:22,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-08-18 20:18:22,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-08-18 20:18:22,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-08-18 20:18:22,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2020-08-18 20:18:22,957 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 51 [2020-08-18 20:18:22,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:18:22,958 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2020-08-18 20:18:22,958 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-08-18 20:18:22,958 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2020-08-18 20:18:22,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-08-18 20:18:22,959 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:18:22,959 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:18:22,960 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 20:18:22,960 INFO L427 AbstractCegarLoop]: === Iteration 10 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:18:22,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:18:22,960 INFO L82 PathProgramCache]: Analyzing trace with hash 539879072, now seen corresponding path program 9 times [2020-08-18 20:18:22,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:18:22,961 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [781888634] [2020-08-18 20:18:22,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:18:22,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:23,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:18:23,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:23,939 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:18:23,941 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [781888634] [2020-08-18 20:18:23,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 20:18:23,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-08-18 20:18:23,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017912887] [2020-08-18 20:18:23,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-08-18 20:18:23,945 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:18:23,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-08-18 20:18:23,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=1488, Unknown=0, NotChecked=0, Total=1722 [2020-08-18 20:18:23,949 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 42 states. [2020-08-18 20:18:26,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:18:26,091 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions. [2020-08-18 20:18:26,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-08-18 20:18:26,092 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 56 [2020-08-18 20:18:26,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:18:26,093 INFO L225 Difference]: With dead ends: 66 [2020-08-18 20:18:26,094 INFO L226 Difference]: Without dead ends: 63 [2020-08-18 20:18:26,096 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1626 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1153, Invalid=6679, Unknown=0, NotChecked=0, Total=7832 [2020-08-18 20:18:26,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-08-18 20:18:26,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2020-08-18 20:18:26,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-08-18 20:18:26,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2020-08-18 20:18:26,106 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 56 [2020-08-18 20:18:26,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:18:26,107 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2020-08-18 20:18:26,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-08-18 20:18:26,107 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2020-08-18 20:18:26,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-18 20:18:26,108 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:18:26,108 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:18:26,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 20:18:26,109 INFO L427 AbstractCegarLoop]: === Iteration 11 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:18:26,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:18:26,109 INFO L82 PathProgramCache]: Analyzing trace with hash -1424289772, now seen corresponding path program 10 times [2020-08-18 20:18:26,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:18:26,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [811624635] [2020-08-18 20:18:26,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:18:26,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:27,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:18:27,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:18:27,264 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 206 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:18:27,264 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [811624635] [2020-08-18 20:18:27,264 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 20:18:27,264 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2020-08-18 20:18:27,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95093236] [2020-08-18 20:18:27,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-08-18 20:18:27,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:18:27,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-08-18 20:18:27,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=1985, Unknown=0, NotChecked=0, Total=2256 [2020-08-18 20:18:27,267 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand 48 states. [2020-08-18 20:18:28,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:18:28,775 INFO L93 Difference]: Finished difference Result 68 states and 69 transitions. [2020-08-18 20:18:28,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-08-18 20:18:28,775 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 61 [2020-08-18 20:18:28,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:18:28,776 INFO L225 Difference]: With dead ends: 68 [2020-08-18 20:18:28,776 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 20:18:28,779 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2471 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1076, Invalid=7296, Unknown=0, NotChecked=0, Total=8372 [2020-08-18 20:18:28,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 20:18:28,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 20:18:28,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 20:18:28,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 20:18:28,781 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 61 [2020-08-18 20:18:28,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:18:28,781 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 20:18:28,781 INFO L480 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-08-18 20:18:28,781 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 20:18:28,781 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 20:18:28,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 20:18:28,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 20:18:29,293 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 117 [2020-08-18 20:18:29,637 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 121 [2020-08-18 20:18:29,895 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 95 [2020-08-18 20:18:30,175 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 100 [2020-08-18 20:18:30,180 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-08-18 20:18:30,181 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-08-18 20:18:30,181 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-18 20:18:30,181 INFO L268 CegarLoopResult]: For program point fooEXIT(lines 9 18) no Hoare annotation was computed. [2020-08-18 20:18:30,182 INFO L264 CegarLoopResult]: At program point fooENTRY(lines 9 18) the Hoare annotation is: (let ((.cse1 (select (select |#memory_int| |foo_#in~p.base|) |foo_#in~p.offset|)) (.cse0 (select (select |old(#memory_int)| |foo_#in~p.base|) |foo_#in~p.offset|))) (and (or (not (= .cse0 20)) (= 20 .cse1)) (or (and (<= .cse1 18) (<= 18 .cse1)) (not (<= 18 .cse0)) (not (<= .cse0 18))) (or (not (<= 14 .cse0)) (and (<= .cse1 14) (<= 14 .cse1)) (not (<= .cse0 14))) (or (not (<= .cse0 15)) (not (<= 15 .cse0)) (and (<= 15 .cse1) (<= .cse1 15))) (or (and (<= .cse1 17) (<= 17 .cse1)) (not (<= 17 .cse0)) (not (<= .cse0 17))) (or (not (<= 16 .cse0)) (and (<= 16 .cse1) (<= .cse1 16)) (not (<= .cse0 16))) (or (not (= .cse0 10)) (= 10 .cse1)) (or (not (<= .cse0 13)) (and (<= .cse1 13) (<= 13 .cse1)) (not (<= 13 .cse0))) (or (not (<= .cse0 11)) (and (<= .cse1 11) (<= 11 .cse1)) (not (<= 11 .cse0))) (or (not (<= 12 .cse0)) (and (<= .cse1 12) (<= 12 .cse1)) (not (<= .cse0 12))) (or (not (<= 19 .cse0)) (and (<= 19 .cse1) (<= .cse1 19)) (not (<= .cse0 19))))) [2020-08-18 20:18:30,182 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-08-18 20:18:30,182 INFO L268 CegarLoopResult]: For program point fooErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2020-08-18 20:18:30,182 INFO L268 CegarLoopResult]: For program point L12(lines 12 17) no Hoare annotation was computed. [2020-08-18 20:18:30,183 INFO L264 CegarLoopResult]: At program point L11(line 11) the Hoare annotation is: (let ((.cse1 (select (select |#memory_int| |foo_#in~p.base|) |foo_#in~p.offset|)) (.cse2 (select (select |#memory_int| foo_~p.base) foo_~p.offset)) (.cse0 (select (select |old(#memory_int)| |foo_#in~p.base|) |foo_#in~p.offset|))) (and (or (not (<= 18 .cse0)) (and (<= .cse1 18) (<= .cse2 18) (<= 18 .cse1) (<= 18 .cse2)) (not (<= .cse0 18))) (or (and (<= .cse2 12) (<= .cse1 12) (<= 12 .cse1) (<= 12 .cse2)) (not (<= 12 .cse0)) (not (<= .cse0 12))) (or (not (<= 14 .cse0)) (not (<= .cse0 14)) (and (<= .cse1 14) (<= .cse2 14) (<= 14 .cse1) (<= 14 .cse2))) (or (not (<= .cse0 11)) (not (<= 11 .cse0)) (and (<= .cse1 11) (<= 11 .cse1) (<= .cse2 11) (<= 11 .cse2))) (or (not (<= 17 .cse0)) (not (<= .cse0 17)) (and (<= .cse2 17) (<= .cse1 17) (<= 17 .cse1) (<= 17 .cse2))) (or (not (<= 19 .cse0)) (and (<= 19 .cse1) (<= 19 .cse2) (<= .cse2 19)) (not (<= .cse0 19))) (not (= .cse0 20)) (or (not (<= .cse0 15)) (and (<= 15 .cse1) (<= .cse1 15) (<= 15 .cse2) (<= .cse2 15)) (not (<= 15 .cse0))) (or (not (<= .cse0 13)) (and (<= .cse1 13) (<= .cse2 13) (<= 13 .cse2) (<= 13 .cse1)) (not (<= 13 .cse0))) (or (not (= .cse0 10)) (and (= .cse2 10) (= 10 .cse1))) (or (not (<= 16 .cse0)) (and (<= 16 .cse2) (<= 16 .cse1) (<= .cse1 16) (<= .cse2 16)) (not (<= .cse0 16))))) [2020-08-18 20:18:30,183 INFO L268 CegarLoopResult]: For program point L10(lines 10 17) no Hoare annotation was computed. [2020-08-18 20:18:30,184 INFO L268 CegarLoopResult]: For program point L10-1(lines 9 18) no Hoare annotation was computed. [2020-08-18 20:18:30,184 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-18 20:18:30,184 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-18 20:18:30,184 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-18 20:18:30,184 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-18 20:18:30,184 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 20 26) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-08-18 20:18:30,184 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 20 26) no Hoare annotation was computed. [2020-08-18 20:18:30,185 INFO L264 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: (= (select (select |#memory_int| main_~p~0.base) main_~p~0.offset) 10) [2020-08-18 20:18:30,185 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 20 26) no Hoare annotation was computed. [2020-08-18 20:18:30,185 INFO L268 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-08-18 20:18:30,185 INFO L268 CegarLoopResult]: For program point plusFINAL(lines 4 7) no Hoare annotation was computed. [2020-08-18 20:18:30,185 INFO L264 CegarLoopResult]: At program point plusENTRY(lines 4 7) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| |plus_#in~p.base|) |plus_#in~p.offset|)) (.cse1 (select (select |old(#memory_int)| |plus_#in~p.base|) |plus_#in~p.offset|))) (and (or (and (<= 16 .cse0) (<= .cse0 16)) (not (<= 16 .cse1)) (not (<= .cse1 16))) (or (and (<= 12 .cse0) (<= .cse0 12)) (not (<= 12 .cse1)) (not (<= .cse1 12))) (or (not (<= 11 .cse1)) (not (<= .cse1 11)) (and (<= 11 .cse0) (<= .cse0 11))) (or (= .cse0 10) (not (= .cse1 10))) (or (not (<= .cse1 17)) (and (<= .cse0 17) (<= 17 .cse0)) (not (<= 17 .cse1))) (or (not (<= .cse1 14)) (and (<= .cse0 14) (<= 14 .cse0)) (not (<= 14 .cse1))) (or (not (<= .cse1 15)) (not (<= 15 .cse1)) (and (<= 15 .cse0) (<= .cse0 15))) (or (not (<= .cse1 13)) (and (<= 13 .cse0) (<= .cse0 13)) (not (<= 13 .cse1))) (or (not (<= 19 .cse1)) (and (<= .cse0 19) (<= 19 .cse0)) (not (<= .cse1 19))) (or (and (<= 18 .cse0) (<= .cse0 18)) (not (<= 18 .cse1)) (not (<= .cse1 18))))) [2020-08-18 20:18:30,186 INFO L268 CegarLoopResult]: For program point plusEXIT(lines 4 7) no Hoare annotation was computed. [2020-08-18 20:18:30,186 INFO L264 CegarLoopResult]: At program point L6(line 6) the Hoare annotation is: (let ((.cse2 (select (select |#memory_int| |plus_#in~p.base|) |plus_#in~p.offset|))) (let ((.cse3 (<= 18 .cse2)) (.cse1 (select (select |#memory_int| plus_~p.base) plus_~p.offset)) (.cse0 (select (select |old(#memory_int)| |plus_#in~p.base|) |plus_#in~p.offset|))) (and (or (not (<= 12 .cse0)) (not (<= .cse0 12)) (and (<= .cse1 13) (<= 13 .cse2) (<= .cse2 13) (<= 13 .cse1))) (or (and (<= 11 .cse2) (<= .cse2 11) (<= .cse1 11) (<= 11 .cse1)) (not (= .cse0 10))) (or (and (<= 16 .cse1) (<= 16 .cse2) (<= .cse2 16) (<= .cse1 16)) (not (<= .cse0 15)) (not (<= 15 .cse0))) (or (not (<= 16 .cse0)) (and (<= 17 .cse1) (<= .cse2 17) (<= 17 .cse2) (<= .cse1 17)) (not (<= .cse0 16))) (or (and (<= .cse2 14) (<= 14 .cse1) (<= 14 .cse2) (<= .cse1 14)) (not (<= .cse0 13)) (not (<= 13 .cse0))) (or (not (<= .cse0 17)) (and (<= .cse1 18) .cse3 (<= .cse2 18) (<= 18 .cse1)) (not (<= 17 .cse0))) (or (and .cse3 (<= 19 .cse1) (<= .cse1 19)) (not (<= 18 .cse0)) (not (<= .cse0 18))) (or (not (<= .cse0 14)) (and (<= 15 .cse2) (<= .cse1 15) (<= .cse2 15) (<= 15 .cse1)) (not (<= 14 .cse0))) (or (not (<= 11 .cse0)) (not (<= .cse0 11)) (and (<= .cse1 12) (<= 12 .cse2) (<= 12 .cse1) (<= .cse2 12))) (or (not (<= 19 .cse0)) (and .cse3 (= .cse1 20)) (not (<= .cse0 19)))))) [2020-08-18 20:18:30,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 08:18:30 BoogieIcfgContainer [2020-08-18 20:18:30,191 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 20:18:30,194 INFO L168 Benchmark]: Toolchain (without parser) took 19060.56 ms. Allocated memory was 142.1 MB in the beginning and 359.7 MB in the end (delta: 217.6 MB). Free memory was 104.5 MB in the beginning and 177.1 MB in the end (delta: -72.5 MB). Peak memory consumption was 226.6 MB. Max. memory is 7.1 GB. [2020-08-18 20:18:30,195 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 142.1 MB. Free memory was 123.6 MB in the beginning and 123.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 20:18:30,195 INFO L168 Benchmark]: CACSL2BoogieTranslator took 294.86 ms. Allocated memory is still 142.1 MB. Free memory was 104.3 MB in the beginning and 93.4 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2020-08-18 20:18:30,196 INFO L168 Benchmark]: Boogie Preprocessor took 106.53 ms. Allocated memory was 142.1 MB in the beginning and 201.9 MB in the end (delta: 59.8 MB). Free memory was 93.4 MB in the beginning and 179.9 MB in the end (delta: -86.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-08-18 20:18:30,197 INFO L168 Benchmark]: RCFGBuilder took 304.79 ms. Allocated memory is still 201.9 MB. Free memory was 179.3 MB in the beginning and 165.3 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2020-08-18 20:18:30,198 INFO L168 Benchmark]: TraceAbstraction took 18349.18 ms. Allocated memory was 201.9 MB in the beginning and 359.7 MB in the end (delta: 157.8 MB). Free memory was 164.7 MB in the beginning and 177.1 MB in the end (delta: -12.3 MB). Peak memory consumption was 227.0 MB. Max. memory is 7.1 GB. [2020-08-18 20:18:30,202 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 142.1 MB. Free memory was 123.6 MB in the beginning and 123.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 294.86 ms. Allocated memory is still 142.1 MB. Free memory was 104.3 MB in the beginning and 93.4 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 106.53 ms. Allocated memory was 142.1 MB in the beginning and 201.9 MB in the end (delta: 59.8 MB). Free memory was 93.4 MB in the beginning and 179.9 MB in the end (delta: -86.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 304.79 ms. Allocated memory is still 201.9 MB. Free memory was 179.3 MB in the beginning and 165.3 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 18349.18 ms. Allocated memory was 201.9 MB in the beginning and 359.7 MB in the end (delta: 157.8 MB). Free memory was 164.7 MB in the beginning and 177.1 MB in the end (delta: -12.3 MB). Peak memory consumption was 227.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: 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 5 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 16.8s, OverallIterations: 11, TraceHistogramMax: 11, AutomataDifference: 10.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 143 SDtfs, 209 SDslu, 838 SDs, 0 SdLazy, 2680 SolverSat, 387 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 588 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 555 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8249 ImplicationChecksByTransitivity, 12.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=62occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 10 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 51 PreInvPairs, 51 NumberOfFragments, 1520 HoareAnnotationTreeSize, 51 FomulaSimplifications, 57008 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 9 FomulaSimplificationsInter, 379 FormulaSimplificationTreeSizeReductionInter, 1.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 5.1s InterpolantComputationTime, 396 NumberOfCodeBlocks, 396 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 385 ConstructedInterpolants, 0 QuantifiedInterpolants, 101130 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 1 PerfectInterpolantSequences, 206/935 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...