/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 false -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 0.1.25-177f698 [2020-08-21 13:19:00,504 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 13:19:00,507 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 13:19:00,545 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 13:19:00,546 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 13:19:00,557 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 13:19:00,560 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 13:19:00,563 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 13:19:00,564 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 13:19:00,565 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 13:19:00,567 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 13:19:00,571 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 13:19:00,571 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 13:19:00,572 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 13:19:00,574 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 13:19:00,575 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 13:19:00,575 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 13:19:00,579 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 13:19:00,581 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 13:19:00,587 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 13:19:00,591 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 13:19:00,593 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 13:19:00,594 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 13:19:00,595 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 13:19:00,598 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 13:19:00,599 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 13:19:00,599 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 13:19:00,602 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 13:19:00,602 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 13:19:00,604 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-21 13:19:00,610 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 13:19:00,611 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 13:19:00,613 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 13:19:00,613 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 [2020-08-21 13:19:00,657 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 13:19:00,657 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 13:19:00,659 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 13:19:00,659 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 13:19:00,660 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 13:19:00,660 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 13:19:00,660 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 13:19:00,661 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 13:19:00,661 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 13:19:00,661 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 13:19:00,662 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 13:19:00,662 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 13:19:00,662 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 13:19:00,663 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 13:19:00,663 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 13:19:00,663 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 13:19:00,663 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 13:19:00,664 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 13:19:00,664 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 13:19:00,664 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 13:19:00,664 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 13:19:00,664 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 13:19:00,665 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 13:19:00,665 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 13:19:00,665 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 13:19:00,665 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 13:19:00,665 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 13:19:00,666 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 13:19:00,666 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 13:19:00,666 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 -> false [2020-08-21 13:19:00,964 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 13:19:00,978 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 13:19:00,981 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 13:19:00,983 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 13:19:00,983 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 13:19:00,984 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-with-pointer/simple-recursive.c [2020-08-21 13:19:01,050 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c79fa4afc/3d61cd9596294455aa4fb6af512ee9cc/FLAGd26645e92 [2020-08-21 13:19:01,532 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 13:19:01,533 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-with-pointer/simple-recursive.c [2020-08-21 13:19:01,539 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c79fa4afc/3d61cd9596294455aa4fb6af512ee9cc/FLAGd26645e92 [2020-08-21 13:19:01,893 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c79fa4afc/3d61cd9596294455aa4fb6af512ee9cc [2020-08-21 13:19:01,902 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 13:19:01,903 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 13:19:01,904 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 13:19:01,904 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 13:19:01,908 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 13:19:01,909 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 01:19:01" (1/1) ... [2020-08-21 13:19:01,912 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a477604 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:19:01, skipping insertion in model container [2020-08-21 13:19:01,912 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 01:19:01" (1/1) ... [2020-08-21 13:19:01,919 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 13:19:01,938 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 13:19:02,164 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 13:19:02,177 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 13:19:02,195 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 13:19:02,211 INFO L208 MainTranslator]: Completed translation [2020-08-21 13:19:02,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:19:02 WrapperNode [2020-08-21 13:19:02,212 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 13:19:02,213 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 13:19:02,213 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 13:19:02,213 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 13:19:02,366 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:19:02" (1/1) ... [2020-08-21 13:19:02,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:19:02" (1/1) ... [2020-08-21 13:19:02,379 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:19:02" (1/1) ... [2020-08-21 13:19:02,379 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:19:02" (1/1) ... [2020-08-21 13:19:02,388 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:19:02" (1/1) ... [2020-08-21 13:19:02,391 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:19:02" (1/1) ... [2020-08-21 13:19:02,398 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:19:02" (1/1) ... [2020-08-21 13:19:02,401 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 13:19:02,402 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 13:19:02,402 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 13:19:02,402 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 13:19:02,403 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:19:02" (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 [2020-08-21 13:19:02,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 13:19:02,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 13:19:02,463 INFO L138 BoogieDeclarations]: Found implementation of procedure plus [2020-08-21 13:19:02,463 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-08-21 13:19:02,463 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 13:19:02,464 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 13:19:02,464 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-08-21 13:19:02,464 INFO L130 BoogieDeclarations]: Found specification of procedure plus [2020-08-21 13:19:02,464 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 13:19:02,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 13:19:02,464 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 13:19:02,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 13:19:02,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 13:19:02,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 13:19:02,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 13:19:02,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 13:19:02,674 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 13:19:02,674 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-21 13:19:02,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:19:02 BoogieIcfgContainer [2020-08-21 13:19:02,678 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 13:19:02,679 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 13:19:02,680 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 13:19:02,683 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 13:19:02,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 01:19:01" (1/3) ... [2020-08-21 13:19:02,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7080c9f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 01:19:02, skipping insertion in model container [2020-08-21 13:19:02,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:19:02" (2/3) ... [2020-08-21 13:19:02,685 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7080c9f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 01:19:02, skipping insertion in model container [2020-08-21 13:19:02,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:19:02" (3/3) ... [2020-08-21 13:19:02,687 INFO L109 eAbstractionObserver]: Analyzing ICFG simple-recursive.c [2020-08-21 13:19:02,699 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 13:19:02,706 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 13:19:02,723 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 13:19:02,756 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 13:19:02,756 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 13:19:02,756 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 13:19:02,757 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 13:19:02,757 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 13:19:02,757 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 13:19:02,757 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 13:19:02,758 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 13:19:02,781 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-08-21 13:19:02,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-08-21 13:19:02,788 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:19:02,789 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:19:02,790 INFO L427 AbstractCegarLoop]: === Iteration 1 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:19:02,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:19:02,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1703201428, now seen corresponding path program 1 times [2020-08-21 13:19:02,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:19:02,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1878645078] [2020-08-21 13:19:02,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:19:02,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:03,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:19:03,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:03,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:19:03,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1878645078] [2020-08-21 13:19:03,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:19:03,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 13:19:03,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289471914] [2020-08-21 13:19:03,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 13:19:03,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:19:03,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 13:19:03,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-21 13:19:03,108 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 6 states. [2020-08-21 13:19:03,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:19:03,310 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2020-08-21 13:19:03,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 13:19:03,312 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-08-21 13:19:03,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:19:03,322 INFO L225 Difference]: With dead ends: 39 [2020-08-21 13:19:03,323 INFO L226 Difference]: Without dead ends: 18 [2020-08-21 13:19:03,327 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 [2020-08-21 13:19:03,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-08-21 13:19:03,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2020-08-21 13:19:03,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-08-21 13:19:03,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-08-21 13:19:03,369 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 11 [2020-08-21 13:19:03,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:19:03,370 INFO L479 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-08-21 13:19:03,370 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 13:19:03,370 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-08-21 13:19:03,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-21 13:19:03,371 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:19:03,372 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:19:03,372 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 13:19:03,372 INFO L427 AbstractCegarLoop]: === Iteration 2 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:19:03,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:19:03,373 INFO L82 PathProgramCache]: Analyzing trace with hash 1207469216, now seen corresponding path program 1 times [2020-08-21 13:19:03,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:19:03,374 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [37528676] [2020-08-21 13:19:03,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:19:03,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:03,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:19:03,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:03,545 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:19:03,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [37528676] [2020-08-21 13:19:03,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 13:19:03,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-21 13:19:03,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017729381] [2020-08-21 13:19:03,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 13:19:03,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:19:03,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 13:19:03,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-08-21 13:19:03,550 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 10 states. [2020-08-21 13:19:03,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:19:03,802 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2020-08-21 13:19:03,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 13:19:03,803 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 16 [2020-08-21 13:19:03,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:19:03,804 INFO L225 Difference]: With dead ends: 26 [2020-08-21 13:19:03,804 INFO L226 Difference]: Without dead ends: 23 [2020-08-21 13:19:03,806 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 [2020-08-21 13:19:03,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-08-21 13:19:03,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2020-08-21 13:19:03,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-08-21 13:19:03,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2020-08-21 13:19:03,814 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 16 [2020-08-21 13:19:03,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:19:03,814 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2020-08-21 13:19:03,815 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 13:19:03,815 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2020-08-21 13:19:03,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-21 13:19:03,816 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:19:03,816 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:19:03,816 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 13:19:03,816 INFO L427 AbstractCegarLoop]: === Iteration 3 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:19:03,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:19:03,817 INFO L82 PathProgramCache]: Analyzing trace with hash 1866674708, now seen corresponding path program 2 times [2020-08-21 13:19:03,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:19:03,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [588686891] [2020-08-21 13:19:03,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:19:03,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:04,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:19:04,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:04,075 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:19:04,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [588686891] [2020-08-21 13:19:04,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 13:19:04,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-21 13:19:04,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131759927] [2020-08-21 13:19:04,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-21 13:19:04,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:19:04,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-21 13:19:04,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-08-21 13:19:04,085 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 14 states. [2020-08-21 13:19:04,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:19:04,495 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2020-08-21 13:19:04,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 13:19:04,496 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 21 [2020-08-21 13:19:04,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:19:04,497 INFO L225 Difference]: With dead ends: 31 [2020-08-21 13:19:04,497 INFO L226 Difference]: Without dead ends: 28 [2020-08-21 13:19:04,499 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 [2020-08-21 13:19:04,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-08-21 13:19:04,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2020-08-21 13:19:04,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-08-21 13:19:04,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2020-08-21 13:19:04,513 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 21 [2020-08-21 13:19:04,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:19:04,514 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2020-08-21 13:19:04,514 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-21 13:19:04,514 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2020-08-21 13:19:04,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-21 13:19:04,516 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:19:04,516 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:19:04,516 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 13:19:04,517 INFO L427 AbstractCegarLoop]: === Iteration 4 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:19:04,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:19:04,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1116654880, now seen corresponding path program 3 times [2020-08-21 13:19:04,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:19:04,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1589671516] [2020-08-21 13:19:04,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:19:04,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:04,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:19:04,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:04,873 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:19:04,873 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1589671516] [2020-08-21 13:19:04,873 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 13:19:04,874 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-21 13:19:04,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201198420] [2020-08-21 13:19:04,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-21 13:19:04,880 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:19:04,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-21 13:19:04,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2020-08-21 13:19:04,881 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 18 states. [2020-08-21 13:19:05,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:19:05,410 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2020-08-21 13:19:05,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-21 13:19:05,411 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 26 [2020-08-21 13:19:05,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:19:05,413 INFO L225 Difference]: With dead ends: 36 [2020-08-21 13:19:05,413 INFO L226 Difference]: Without dead ends: 33 [2020-08-21 13:19:05,415 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 [2020-08-21 13:19:05,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-08-21 13:19:05,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2020-08-21 13:19:05,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-08-21 13:19:05,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2020-08-21 13:19:05,424 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 26 [2020-08-21 13:19:05,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:19:05,424 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2020-08-21 13:19:05,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-21 13:19:05,424 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2020-08-21 13:19:05,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-08-21 13:19:05,425 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:19:05,425 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:19:05,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 13:19:05,426 INFO L427 AbstractCegarLoop]: === Iteration 5 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:19:05,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:19:05,426 INFO L82 PathProgramCache]: Analyzing trace with hash 1506163092, now seen corresponding path program 4 times [2020-08-21 13:19:05,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:19:05,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1356252601] [2020-08-21 13:19:05,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:19:05,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:05,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:19:05,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:05,748 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:19:05,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1356252601] [2020-08-21 13:19:05,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 13:19:05,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-08-21 13:19:05,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324951896] [2020-08-21 13:19:05,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-08-21 13:19:05,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:19:05,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-08-21 13:19:05,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=393, Unknown=0, NotChecked=0, Total=462 [2020-08-21 13:19:05,750 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 22 states. [2020-08-21 13:19:06,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:19:06,427 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2020-08-21 13:19:06,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-21 13:19:06,427 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 31 [2020-08-21 13:19:06,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:19:06,428 INFO L225 Difference]: With dead ends: 41 [2020-08-21 13:19:06,428 INFO L226 Difference]: Without dead ends: 38 [2020-08-21 13:19:06,429 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 [2020-08-21 13:19:06,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-08-21 13:19:06,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-08-21 13:19:06,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-08-21 13:19:06,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2020-08-21 13:19:06,438 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 31 [2020-08-21 13:19:06,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:19:06,439 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2020-08-21 13:19:06,439 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-08-21 13:19:06,439 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2020-08-21 13:19:06,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-08-21 13:19:06,440 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:19:06,440 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:19:06,440 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 13:19:06,441 INFO L427 AbstractCegarLoop]: === Iteration 6 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:19:06,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:19:06,441 INFO L82 PathProgramCache]: Analyzing trace with hash 1044673952, now seen corresponding path program 5 times [2020-08-21 13:19:06,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:19:06,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1178057524] [2020-08-21 13:19:06,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:19:06,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:06,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:19:06,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:06,824 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:19:06,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1178057524] [2020-08-21 13:19:06,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 13:19:06,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-08-21 13:19:06,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876378741] [2020-08-21 13:19:06,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-08-21 13:19:06,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:19:06,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-08-21 13:19:06,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=556, Unknown=0, NotChecked=0, Total=650 [2020-08-21 13:19:06,827 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 26 states. [2020-08-21 13:19:07,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:19:07,743 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2020-08-21 13:19:07,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-08-21 13:19:07,744 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 36 [2020-08-21 13:19:07,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:19:07,746 INFO L225 Difference]: With dead ends: 46 [2020-08-21 13:19:07,747 INFO L226 Difference]: Without dead ends: 43 [2020-08-21 13:19:07,749 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 [2020-08-21 13:19:07,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-08-21 13:19:07,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2020-08-21 13:19:07,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-08-21 13:19:07,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2020-08-21 13:19:07,758 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 36 [2020-08-21 13:19:07,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:19:07,758 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2020-08-21 13:19:07,758 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-08-21 13:19:07,758 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2020-08-21 13:19:07,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-08-21 13:19:07,760 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:19:07,760 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:19:07,760 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 13:19:07,760 INFO L427 AbstractCegarLoop]: === Iteration 7 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:19:07,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:19:07,761 INFO L82 PathProgramCache]: Analyzing trace with hash -272244460, now seen corresponding path program 6 times [2020-08-21 13:19:07,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:19:07,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [668806748] [2020-08-21 13:19:07,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:19:07,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:08,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:19:08,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:08,225 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:19:08,226 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [668806748] [2020-08-21 13:19:08,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 13:19:08,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-08-21 13:19:08,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768619619] [2020-08-21 13:19:08,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-08-21 13:19:08,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:19:08,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-08-21 13:19:08,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=747, Unknown=0, NotChecked=0, Total=870 [2020-08-21 13:19:08,228 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 30 states. [2020-08-21 13:19:09,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:19:09,391 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2020-08-21 13:19:09,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-08-21 13:19:09,392 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 41 [2020-08-21 13:19:09,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:19:09,394 INFO L225 Difference]: With dead ends: 51 [2020-08-21 13:19:09,394 INFO L226 Difference]: Without dead ends: 48 [2020-08-21 13:19:09,396 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 [2020-08-21 13:19:09,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-08-21 13:19:09,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-08-21 13:19:09,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-08-21 13:19:09,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2020-08-21 13:19:09,405 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 41 [2020-08-21 13:19:09,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:19:09,405 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2020-08-21 13:19:09,405 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-08-21 13:19:09,406 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2020-08-21 13:19:09,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-21 13:19:09,407 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:19:09,407 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:19:09,407 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 13:19:09,407 INFO L427 AbstractCegarLoop]: === Iteration 8 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:19:09,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:19:09,408 INFO L82 PathProgramCache]: Analyzing trace with hash 1667333664, now seen corresponding path program 7 times [2020-08-21 13:19:09,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:19:09,408 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [937364568] [2020-08-21 13:19:09,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:19:09,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:10,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:19:10,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:10,017 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:19:10,018 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [937364568] [2020-08-21 13:19:10,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 13:19:10,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-08-21 13:19:10,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867165019] [2020-08-21 13:19:10,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-08-21 13:19:10,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:19:10,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-08-21 13:19:10,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=966, Unknown=0, NotChecked=0, Total=1122 [2020-08-21 13:19:10,020 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 34 states. [2020-08-21 13:19:11,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:19:11,463 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2020-08-21 13:19:11,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-08-21 13:19:11,465 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 46 [2020-08-21 13:19:11,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:19:11,467 INFO L225 Difference]: With dead ends: 56 [2020-08-21 13:19:11,467 INFO L226 Difference]: Without dead ends: 53 [2020-08-21 13:19:11,469 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 [2020-08-21 13:19:11,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-08-21 13:19:11,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2020-08-21 13:19:11,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-08-21 13:19:11,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2020-08-21 13:19:11,477 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 46 [2020-08-21 13:19:11,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:19:11,478 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2020-08-21 13:19:11,478 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-08-21 13:19:11,478 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2020-08-21 13:19:11,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-21 13:19:11,479 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:19:11,479 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:19:11,480 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 13:19:11,480 INFO L427 AbstractCegarLoop]: === Iteration 9 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:19:11,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:19:11,480 INFO L82 PathProgramCache]: Analyzing trace with hash -168154988, now seen corresponding path program 8 times [2020-08-21 13:19:11,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:19:11,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [20614374] [2020-08-21 13:19:11,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:19:11,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:12,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:19:12,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:12,139 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:19:12,139 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [20614374] [2020-08-21 13:19:12,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 13:19:12,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-08-21 13:19:12,140 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419385483] [2020-08-21 13:19:12,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-08-21 13:19:12,141 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:19:12,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-08-21 13:19:12,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=1213, Unknown=0, NotChecked=0, Total=1406 [2020-08-21 13:19:12,144 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 38 states. [2020-08-21 13:19:13,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:19:13,783 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2020-08-21 13:19:13,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-08-21 13:19:13,784 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 51 [2020-08-21 13:19:13,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:19:13,785 INFO L225 Difference]: With dead ends: 61 [2020-08-21 13:19:13,785 INFO L226 Difference]: Without dead ends: 58 [2020-08-21 13:19:13,788 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 [2020-08-21 13:19:13,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-08-21 13:19:13,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-08-21 13:19:13,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-08-21 13:19:13,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2020-08-21 13:19:13,796 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 51 [2020-08-21 13:19:13,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:19:13,797 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2020-08-21 13:19:13,797 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-08-21 13:19:13,797 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2020-08-21 13:19:13,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-08-21 13:19:13,798 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:19:13,799 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:19:13,799 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 13:19:13,799 INFO L427 AbstractCegarLoop]: === Iteration 10 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:19:13,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:19:13,799 INFO L82 PathProgramCache]: Analyzing trace with hash 539879072, now seen corresponding path program 9 times [2020-08-21 13:19:13,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:19:13,800 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [615434378] [2020-08-21 13:19:13,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:19:13,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:14,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:19:14,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:14,782 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:19:14,783 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [615434378] [2020-08-21 13:19:14,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 13:19:14,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-08-21 13:19:14,784 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888305903] [2020-08-21 13:19:14,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-08-21 13:19:14,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:19:14,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-08-21 13:19:14,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=1488, Unknown=0, NotChecked=0, Total=1722 [2020-08-21 13:19:14,790 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 42 states. [2020-08-21 13:19:17,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:19:17,021 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions. [2020-08-21 13:19:17,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-08-21 13:19:17,022 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 56 [2020-08-21 13:19:17,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:19:17,023 INFO L225 Difference]: With dead ends: 66 [2020-08-21 13:19:17,024 INFO L226 Difference]: Without dead ends: 63 [2020-08-21 13:19:17,026 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1626 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1153, Invalid=6679, Unknown=0, NotChecked=0, Total=7832 [2020-08-21 13:19:17,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-08-21 13:19:17,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2020-08-21 13:19:17,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-08-21 13:19:17,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2020-08-21 13:19:17,036 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 56 [2020-08-21 13:19:17,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:19:17,036 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2020-08-21 13:19:17,036 INFO L480 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-08-21 13:19:17,037 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2020-08-21 13:19:17,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-21 13:19:17,038 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:19:17,038 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:19:17,038 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 13:19:17,038 INFO L427 AbstractCegarLoop]: === Iteration 11 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:19:17,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:19:17,039 INFO L82 PathProgramCache]: Analyzing trace with hash -1424289772, now seen corresponding path program 10 times [2020-08-21 13:19:17,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:19:17,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1201884634] [2020-08-21 13:19:17,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:19:17,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:18,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:19:18,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:18,238 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 206 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:19:18,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1201884634] [2020-08-21 13:19:18,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 13:19:18,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2020-08-21 13:19:18,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18465288] [2020-08-21 13:19:18,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-08-21 13:19:18,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:19:18,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-08-21 13:19:18,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=1985, Unknown=0, NotChecked=0, Total=2256 [2020-08-21 13:19:18,241 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand 48 states. [2020-08-21 13:19:19,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:19:19,740 INFO L93 Difference]: Finished difference Result 68 states and 69 transitions. [2020-08-21 13:19:19,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-08-21 13:19:19,741 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 61 [2020-08-21 13:19:19,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:19:19,741 INFO L225 Difference]: With dead ends: 68 [2020-08-21 13:19:19,742 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 13:19:19,748 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 [2020-08-21 13:19:19,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 13:19:19,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 13:19:19,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 13:19:19,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 13:19:19,749 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 61 [2020-08-21 13:19:19,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:19:19,750 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 13:19:19,750 INFO L480 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-08-21 13:19:19,750 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 13:19:19,750 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 13:19:19,750 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 13:19:19,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-21 13:19:20,270 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 117 [2020-08-21 13:19:20,590 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 121 [2020-08-21 13:19:20,903 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 95 [2020-08-21 13:19:21,168 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 100 [2020-08-21 13:19:21,171 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-08-21 13:19:21,172 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|)) [2020-08-21 13:19:21,172 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-21 13:19:21,172 INFO L268 CegarLoopResult]: For program point fooEXIT(lines 9 18) no Hoare annotation was computed. [2020-08-21 13:19:21,173 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))))) [2020-08-21 13:19:21,173 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-08-21 13:19:21,173 INFO L268 CegarLoopResult]: For program point fooErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2020-08-21 13:19:21,173 INFO L268 CegarLoopResult]: For program point L12(lines 12 17) no Hoare annotation was computed. [2020-08-21 13:19:21,174 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))))) [2020-08-21 13:19:21,174 INFO L268 CegarLoopResult]: For program point L10(lines 10 17) no Hoare annotation was computed. [2020-08-21 13:19:21,174 INFO L268 CegarLoopResult]: For program point L10-1(lines 9 18) no Hoare annotation was computed. [2020-08-21 13:19:21,174 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-21 13:19:21,175 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-21 13:19:21,175 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-21 13:19:21,175 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-21 13:19:21,175 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 20 26) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-08-21 13:19:21,175 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 20 26) no Hoare annotation was computed. [2020-08-21 13:19:21,175 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) [2020-08-21 13:19:21,175 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 20 26) no Hoare annotation was computed. [2020-08-21 13:19:21,176 INFO L268 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-08-21 13:19:21,176 INFO L268 CegarLoopResult]: For program point plusFINAL(lines 4 7) no Hoare annotation was computed. [2020-08-21 13:19:21,176 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))))) [2020-08-21 13:19:21,176 INFO L268 CegarLoopResult]: For program point plusEXIT(lines 4 7) no Hoare annotation was computed. [2020-08-21 13:19:21,177 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)))))) [2020-08-21 13:19:21,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 01:19:21 BoogieIcfgContainer [2020-08-21 13:19:21,183 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 13:19:21,185 INFO L168 Benchmark]: Toolchain (without parser) took 19281.74 ms. Allocated memory was 140.5 MB in the beginning and 345.5 MB in the end (delta: 205.0 MB). Free memory was 103.9 MB in the beginning and 176.6 MB in the end (delta: -72.7 MB). Peak memory consumption was 202.2 MB. Max. memory is 7.1 GB. [2020-08-21 13:19:21,186 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 13:19:21,186 INFO L168 Benchmark]: CACSL2BoogieTranslator took 308.08 ms. Allocated memory is still 140.5 MB. Free memory was 103.7 MB in the beginning and 94.0 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-08-21 13:19:21,187 INFO L168 Benchmark]: Boogie Preprocessor took 188.80 ms. Allocated memory was 140.5 MB in the beginning and 207.6 MB in the end (delta: 67.1 MB). Free memory was 94.0 MB in the beginning and 185.7 MB in the end (delta: -91.7 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2020-08-21 13:19:21,188 INFO L168 Benchmark]: RCFGBuilder took 276.42 ms. Allocated memory is still 207.6 MB. Free memory was 185.7 MB in the beginning and 171.1 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. [2020-08-21 13:19:21,189 INFO L168 Benchmark]: TraceAbstraction took 18503.77 ms. Allocated memory was 207.6 MB in the beginning and 345.5 MB in the end (delta: 137.9 MB). Free memory was 170.5 MB in the beginning and 176.6 MB in the end (delta: -6.1 MB). Peak memory consumption was 201.8 MB. Max. memory is 7.1 GB. [2020-08-21 13:19:21,193 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 308.08 ms. Allocated memory is still 140.5 MB. Free memory was 103.7 MB in the beginning and 94.0 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 188.80 ms. Allocated memory was 140.5 MB in the beginning and 207.6 MB in the end (delta: 67.1 MB). Free memory was 94.0 MB in the beginning and 185.7 MB in the end (delta: -91.7 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 276.42 ms. Allocated memory is still 207.6 MB. Free memory was 185.7 MB in the beginning and 171.1 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 18503.77 ms. Allocated memory was 207.6 MB in the beginning and 345.5 MB in the end (delta: 137.9 MB). Free memory was 170.5 MB in the beginning and 176.6 MB in the end (delta: -6.1 MB). Peak memory consumption was 201.8 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: 16.9s, OverallIterations: 11, TraceHistogramMax: 11, AutomataDifference: 11.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.4s, 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, 12.5s 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, 5.2s 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...