/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 --rcfgbuilder.size.of.a.code.block SingleStatement --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-c90d42b [2020-09-24 14:57:13,551 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 14:57:13,555 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 14:57:13,586 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 14:57:13,587 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 14:57:13,595 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 14:57:13,597 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 14:57:13,600 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 14:57:13,603 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 14:57:13,604 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 14:57:13,606 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 14:57:13,609 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 14:57:13,609 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 14:57:13,613 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 14:57:13,616 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 14:57:13,617 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 14:57:13,619 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 14:57:13,621 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 14:57:13,623 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 14:57:13,630 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 14:57:13,634 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 14:57:13,635 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 14:57:13,637 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 14:57:13,638 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 14:57:13,649 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-24 14:57:13,660 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 14:57:13,661 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 14:57:13,663 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 14:57:13,664 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 [2020-09-24 14:57:13,717 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 14:57:13,718 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 14:57:13,720 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 14:57:13,720 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 14:57:13,721 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 14:57:13,721 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 14:57:13,721 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 14:57:13,722 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 14:57:13,722 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 14:57:13,722 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 14:57:13,723 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 14:57:13,723 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 14:57:13,723 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 14:57:13,724 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 14:57:13,724 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 14:57:13,724 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 14:57:13,724 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 14:57:13,725 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 14:57:13,725 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 14:57:13,725 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 14:57:13,725 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 14:57:13,725 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 14:57:13,726 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 14:57:13,726 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 14:57:13,726 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 14:57:13,726 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 14:57:13,727 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 14:57:13,727 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 14:57:13,727 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 14:57:13,727 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.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-09-24 14:57:14,221 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 14:57:14,239 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 14:57:14,243 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 14:57:14,245 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 14:57:14,245 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 14:57:14,246 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-with-pointer/simple-recursive.c [2020-09-24 14:57:14,327 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3d7e61c16/cf48d9e3b2f9469ab1b15a7c26eee346/FLAG9775acd64 [2020-09-24 14:57:14,888 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 14:57:14,889 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-with-pointer/simple-recursive.c [2020-09-24 14:57:14,901 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3d7e61c16/cf48d9e3b2f9469ab1b15a7c26eee346/FLAG9775acd64 [2020-09-24 14:57:15,233 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3d7e61c16/cf48d9e3b2f9469ab1b15a7c26eee346 [2020-09-24 14:57:15,247 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 14:57:15,253 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 14:57:15,255 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 14:57:15,255 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 14:57:15,259 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 14:57:15,261 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:57:15" (1/1) ... [2020-09-24 14:57:15,265 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a47c3e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:15, skipping insertion in model container [2020-09-24 14:57:15,265 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:57:15" (1/1) ... [2020-09-24 14:57:15,275 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 14:57:15,300 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 14:57:15,518 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 14:57:15,534 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 14:57:15,556 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 14:57:15,576 INFO L208 MainTranslator]: Completed translation [2020-09-24 14:57:15,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:15 WrapperNode [2020-09-24 14:57:15,577 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 14:57:15,578 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 14:57:15,578 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 14:57:15,578 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 14:57:15,675 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:15" (1/1) ... [2020-09-24 14:57:15,676 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:15" (1/1) ... [2020-09-24 14:57:15,684 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:15" (1/1) ... [2020-09-24 14:57:15,685 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:15" (1/1) ... [2020-09-24 14:57:15,692 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:15" (1/1) ... [2020-09-24 14:57:15,694 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:15" (1/1) ... [2020-09-24 14:57:15,695 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:15" (1/1) ... [2020-09-24 14:57:15,698 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 14:57:15,698 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 14:57:15,699 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 14:57:15,699 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 14:57:15,700 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:15" (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 [2020-09-24 14:57:15,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 14:57:15,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 14:57:15,778 INFO L138 BoogieDeclarations]: Found implementation of procedure plus [2020-09-24 14:57:15,778 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-09-24 14:57:15,778 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 14:57:15,778 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 14:57:15,778 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-09-24 14:57:15,778 INFO L130 BoogieDeclarations]: Found specification of procedure plus [2020-09-24 14:57:15,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 14:57:15,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 14:57:15,779 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 14:57:15,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 14:57:15,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 14:57:15,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 14:57:15,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 14:57:15,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 14:57:16,042 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 14:57:16,043 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 14:57:16,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 02:57:16 BoogieIcfgContainer [2020-09-24 14:57:16,049 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 14:57:16,050 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 14:57:16,051 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 14:57:16,054 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 14:57:16,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 02:57:15" (1/3) ... [2020-09-24 14:57:16,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f598921 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 02:57:16, skipping insertion in model container [2020-09-24 14:57:16,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:15" (2/3) ... [2020-09-24 14:57:16,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f598921 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 02:57:16, skipping insertion in model container [2020-09-24 14:57:16,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 02:57:16" (3/3) ... [2020-09-24 14:57:16,059 INFO L109 eAbstractionObserver]: Analyzing ICFG simple-recursive.c [2020-09-24 14:57:16,075 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 14:57:16,087 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 14:57:16,115 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 14:57:16,153 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 14:57:16,154 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 14:57:16,154 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 14:57:16,154 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 14:57:16,154 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 14:57:16,155 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 14:57:16,155 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 14:57:16,155 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 14:57:16,182 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-09-24 14:57:16,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-24 14:57:16,190 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:16,192 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:57:16,192 INFO L427 AbstractCegarLoop]: === Iteration 1 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:16,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:16,200 INFO L82 PathProgramCache]: Analyzing trace with hash 474032392, now seen corresponding path program 1 times [2020-09-24 14:57:16,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:16,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [495562544] [2020-09-24 14:57:16,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:16,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:16,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:16,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:16,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:57:16,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [495562544] [2020-09-24 14:57:16,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:16,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 14:57:16,541 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650897846] [2020-09-24 14:57:16,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 14:57:16,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:16,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 14:57:16,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 14:57:16,565 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 7 states. [2020-09-24 14:57:16,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:16,907 INFO L93 Difference]: Finished difference Result 65 states and 71 transitions. [2020-09-24 14:57:16,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 14:57:16,909 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2020-09-24 14:57:16,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:16,923 INFO L225 Difference]: With dead ends: 65 [2020-09-24 14:57:16,923 INFO L226 Difference]: Without dead ends: 37 [2020-09-24 14:57:16,928 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-09-24 14:57:16,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-09-24 14:57:16,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2020-09-24 14:57:16,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-09-24 14:57:16,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2020-09-24 14:57:16,978 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 22 [2020-09-24 14:57:16,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:16,979 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2020-09-24 14:57:16,979 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 14:57:16,979 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2020-09-24 14:57:16,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 14:57:16,980 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:16,981 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:57:16,981 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 14:57:16,981 INFO L427 AbstractCegarLoop]: === Iteration 2 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:16,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:16,982 INFO L82 PathProgramCache]: Analyzing trace with hash 705842607, now seen corresponding path program 1 times [2020-09-24 14:57:16,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:16,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [237372498] [2020-09-24 14:57:16,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:17,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:17,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:17,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:17,248 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:57:17,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [237372498] [2020-09-24 14:57:17,250 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 14:57:17,250 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 14:57:17,250 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064266840] [2020-09-24 14:57:17,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 14:57:17,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:17,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 14:57:17,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-09-24 14:57:17,269 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 14 states. [2020-09-24 14:57:17,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:17,950 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2020-09-24 14:57:17,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 14:57:17,950 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 34 [2020-09-24 14:57:17,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:17,952 INFO L225 Difference]: With dead ends: 55 [2020-09-24 14:57:17,952 INFO L226 Difference]: Without dead ends: 49 [2020-09-24 14:57:17,954 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=129, Invalid=573, Unknown=0, NotChecked=0, Total=702 [2020-09-24 14:57:17,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-09-24 14:57:17,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2020-09-24 14:57:17,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-09-24 14:57:17,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2020-09-24 14:57:17,964 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 34 [2020-09-24 14:57:17,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:17,965 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2020-09-24 14:57:17,965 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 14:57:17,965 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2020-09-24 14:57:17,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-24 14:57:17,967 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:17,967 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:57:17,967 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 14:57:17,967 INFO L427 AbstractCegarLoop]: === Iteration 3 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:17,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:17,968 INFO L82 PathProgramCache]: Analyzing trace with hash 180793302, now seen corresponding path program 2 times [2020-09-24 14:57:17,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:17,969 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [813539852] [2020-09-24 14:57:17,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:17,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:18,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:18,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:18,405 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:57:18,406 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [813539852] [2020-09-24 14:57:18,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 14:57:18,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-09-24 14:57:18,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095235304] [2020-09-24 14:57:18,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-24 14:57:18,408 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:18,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-24 14:57:18,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2020-09-24 14:57:18,409 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 20 states. [2020-09-24 14:57:19,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:19,508 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2020-09-24 14:57:19,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-24 14:57:19,509 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 46 [2020-09-24 14:57:19,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:19,510 INFO L225 Difference]: With dead ends: 67 [2020-09-24 14:57:19,510 INFO L226 Difference]: Without dead ends: 61 [2020-09-24 14:57:19,512 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=278, Invalid=1444, Unknown=0, NotChecked=0, Total=1722 [2020-09-24 14:57:19,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-09-24 14:57:19,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2020-09-24 14:57:19,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-09-24 14:57:19,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2020-09-24 14:57:19,522 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 46 [2020-09-24 14:57:19,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:19,522 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2020-09-24 14:57:19,522 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-24 14:57:19,523 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2020-09-24 14:57:19,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-24 14:57:19,524 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:19,525 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:57:19,525 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 14:57:19,525 INFO L427 AbstractCegarLoop]: === Iteration 4 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:19,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:19,526 INFO L82 PathProgramCache]: Analyzing trace with hash -68284547, now seen corresponding path program 3 times [2020-09-24 14:57:19,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:19,526 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2095143100] [2020-09-24 14:57:19,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:19,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:20,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:20,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:20,075 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:57:20,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2095143100] [2020-09-24 14:57:20,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 14:57:20,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-09-24 14:57:20,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438968882] [2020-09-24 14:57:20,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-09-24 14:57:20,078 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:20,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-09-24 14:57:20,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=574, Unknown=0, NotChecked=0, Total=650 [2020-09-24 14:57:20,079 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 26 states. [2020-09-24 14:57:21,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:21,472 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2020-09-24 14:57:21,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-09-24 14:57:21,473 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 58 [2020-09-24 14:57:21,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:21,475 INFO L225 Difference]: With dead ends: 79 [2020-09-24 14:57:21,476 INFO L226 Difference]: Without dead ends: 73 [2020-09-24 14:57:21,478 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 605 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=482, Invalid=2710, Unknown=0, NotChecked=0, Total=3192 [2020-09-24 14:57:21,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-09-24 14:57:21,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 71. [2020-09-24 14:57:21,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-09-24 14:57:21,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2020-09-24 14:57:21,495 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 58 [2020-09-24 14:57:21,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:21,496 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2020-09-24 14:57:21,496 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-09-24 14:57:21,496 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2020-09-24 14:57:21,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-24 14:57:21,497 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:21,498 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:57:21,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 14:57:21,498 INFO L427 AbstractCegarLoop]: === Iteration 5 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:21,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:21,499 INFO L82 PathProgramCache]: Analyzing trace with hash -1585959772, now seen corresponding path program 4 times [2020-09-24 14:57:21,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:21,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [812436152] [2020-09-24 14:57:21,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:21,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:22,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:22,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:22,250 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:57:22,250 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [812436152] [2020-09-24 14:57:22,250 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 14:57:22,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-09-24 14:57:22,251 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010005923] [2020-09-24 14:57:22,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-09-24 14:57:22,252 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:22,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-09-24 14:57:22,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=883, Unknown=0, NotChecked=0, Total=992 [2020-09-24 14:57:22,253 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 32 states. [2020-09-24 14:57:24,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:24,339 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2020-09-24 14:57:24,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-09-24 14:57:24,339 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 70 [2020-09-24 14:57:24,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:24,341 INFO L225 Difference]: With dead ends: 91 [2020-09-24 14:57:24,341 INFO L226 Difference]: Without dead ends: 85 [2020-09-24 14:57:24,347 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1046 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=741, Invalid=4371, Unknown=0, NotChecked=0, Total=5112 [2020-09-24 14:57:24,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-09-24 14:57:24,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 83. [2020-09-24 14:57:24,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-09-24 14:57:24,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2020-09-24 14:57:24,368 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 70 [2020-09-24 14:57:24,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:24,368 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2020-09-24 14:57:24,369 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-09-24 14:57:24,369 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2020-09-24 14:57:24,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-09-24 14:57:24,375 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:24,377 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:57:24,377 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 14:57:24,378 INFO L427 AbstractCegarLoop]: === Iteration 6 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:24,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:24,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1974781771, now seen corresponding path program 5 times [2020-09-24 14:57:24,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:24,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1567536082] [2020-09-24 14:57:24,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:24,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:25,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:25,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:25,357 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:57:25,357 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1567536082] [2020-09-24 14:57:25,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 14:57:25,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-09-24 14:57:25,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372538639] [2020-09-24 14:57:25,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-09-24 14:57:25,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:25,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-09-24 14:57:25,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1258, Unknown=0, NotChecked=0, Total=1406 [2020-09-24 14:57:25,378 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand 38 states. [2020-09-24 14:57:28,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:28,129 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2020-09-24 14:57:28,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-09-24 14:57:28,130 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 82 [2020-09-24 14:57:28,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:28,133 INFO L225 Difference]: With dead ends: 103 [2020-09-24 14:57:28,133 INFO L226 Difference]: Without dead ends: 97 [2020-09-24 14:57:28,136 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1606 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1055, Invalid=6427, Unknown=0, NotChecked=0, Total=7482 [2020-09-24 14:57:28,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-09-24 14:57:28,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 95. [2020-09-24 14:57:28,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-09-24 14:57:28,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2020-09-24 14:57:28,147 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 82 [2020-09-24 14:57:28,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:28,148 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2020-09-24 14:57:28,148 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-09-24 14:57:28,148 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2020-09-24 14:57:28,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-09-24 14:57:28,150 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:28,150 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:57:28,150 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 14:57:28,151 INFO L427 AbstractCegarLoop]: === Iteration 7 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:28,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:28,151 INFO L82 PathProgramCache]: Analyzing trace with hash 961781618, now seen corresponding path program 6 times [2020-09-24 14:57:28,151 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:28,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1936019690] [2020-09-24 14:57:28,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:28,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:29,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:29,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:29,232 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:57:29,233 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1936019690] [2020-09-24 14:57:29,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 14:57:29,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2020-09-24 14:57:29,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877623015] [2020-09-24 14:57:29,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-09-24 14:57:29,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:29,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-09-24 14:57:29,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=1699, Unknown=0, NotChecked=0, Total=1892 [2020-09-24 14:57:29,239 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 44 states. [2020-09-24 14:57:32,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:32,416 INFO L93 Difference]: Finished difference Result 115 states and 115 transitions. [2020-09-24 14:57:32,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2020-09-24 14:57:32,417 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 94 [2020-09-24 14:57:32,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:32,419 INFO L225 Difference]: With dead ends: 115 [2020-09-24 14:57:32,420 INFO L226 Difference]: Without dead ends: 109 [2020-09-24 14:57:32,424 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2285 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1424, Invalid=8878, Unknown=0, NotChecked=0, Total=10302 [2020-09-24 14:57:32,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-09-24 14:57:32,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 107. [2020-09-24 14:57:32,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-09-24 14:57:32,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2020-09-24 14:57:32,436 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 94 [2020-09-24 14:57:32,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:32,436 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2020-09-24 14:57:32,436 INFO L480 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-09-24 14:57:32,437 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2020-09-24 14:57:32,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-09-24 14:57:32,438 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:32,439 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:57:32,439 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 14:57:32,439 INFO L427 AbstractCegarLoop]: === Iteration 8 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:32,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:32,440 INFO L82 PathProgramCache]: Analyzing trace with hash 1667527961, now seen corresponding path program 7 times [2020-09-24 14:57:32,440 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:32,440 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1490138757] [2020-09-24 14:57:32,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:32,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:33,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:33,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:33,878 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:57:33,879 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1490138757] [2020-09-24 14:57:33,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 14:57:33,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2020-09-24 14:57:33,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060551170] [2020-09-24 14:57:33,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2020-09-24 14:57:33,880 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:33,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2020-09-24 14:57:33,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=2206, Unknown=0, NotChecked=0, Total=2450 [2020-09-24 14:57:33,881 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand 50 states. [2020-09-24 14:57:38,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:38,104 INFO L93 Difference]: Finished difference Result 127 states and 127 transitions. [2020-09-24 14:57:38,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2020-09-24 14:57:38,105 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 106 [2020-09-24 14:57:38,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:38,107 INFO L225 Difference]: With dead ends: 127 [2020-09-24 14:57:38,108 INFO L226 Difference]: Without dead ends: 121 [2020-09-24 14:57:38,112 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3083 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=1848, Invalid=11724, Unknown=0, NotChecked=0, Total=13572 [2020-09-24 14:57:38,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-09-24 14:57:38,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 119. [2020-09-24 14:57:38,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-09-24 14:57:38,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 119 transitions. [2020-09-24 14:57:38,125 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 119 transitions. Word has length 106 [2020-09-24 14:57:38,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:38,126 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 119 transitions. [2020-09-24 14:57:38,126 INFO L480 AbstractCegarLoop]: Interpolant automaton has 50 states. [2020-09-24 14:57:38,126 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 119 transitions. [2020-09-24 14:57:38,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-09-24 14:57:38,128 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:38,128 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:57:38,129 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 14:57:38,129 INFO L427 AbstractCegarLoop]: === Iteration 9 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:38,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:38,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1856567232, now seen corresponding path program 8 times [2020-09-24 14:57:38,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:38,130 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [101633459] [2020-09-24 14:57:38,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:38,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:39,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:39,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:39,747 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 0 proven. 360 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:57:39,747 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [101633459] [2020-09-24 14:57:39,747 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 14:57:39,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2020-09-24 14:57:39,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123952183] [2020-09-24 14:57:39,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2020-09-24 14:57:39,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:39,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2020-09-24 14:57:39,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=301, Invalid=2779, Unknown=0, NotChecked=0, Total=3080 [2020-09-24 14:57:39,751 INFO L87 Difference]: Start difference. First operand 119 states and 119 transitions. Second operand 56 states. [2020-09-24 14:57:45,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:45,177 INFO L93 Difference]: Finished difference Result 139 states and 139 transitions. [2020-09-24 14:57:45,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2020-09-24 14:57:45,179 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 118 [2020-09-24 14:57:45,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:45,180 INFO L225 Difference]: With dead ends: 139 [2020-09-24 14:57:45,180 INFO L226 Difference]: Without dead ends: 133 [2020-09-24 14:57:45,186 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4000 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=2327, Invalid=14965, Unknown=0, NotChecked=0, Total=17292 [2020-09-24 14:57:45,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-09-24 14:57:45,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 131. [2020-09-24 14:57:45,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-09-24 14:57:45,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 131 transitions. [2020-09-24 14:57:45,197 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 131 transitions. Word has length 118 [2020-09-24 14:57:45,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:45,198 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 131 transitions. [2020-09-24 14:57:45,198 INFO L480 AbstractCegarLoop]: Interpolant automaton has 56 states. [2020-09-24 14:57:45,198 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 131 transitions. [2020-09-24 14:57:45,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-09-24 14:57:45,200 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:45,200 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:57:45,201 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 14:57:45,201 INFO L427 AbstractCegarLoop]: === Iteration 10 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:45,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:45,201 INFO L82 PathProgramCache]: Analyzing trace with hash -151316249, now seen corresponding path program 9 times [2020-09-24 14:57:45,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:45,202 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2114480046] [2020-09-24 14:57:45,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:45,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:47,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:47,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:47,280 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 0 proven. 459 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:57:47,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2114480046] [2020-09-24 14:57:47,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 14:57:47,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2020-09-24 14:57:47,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21269300] [2020-09-24 14:57:47,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2020-09-24 14:57:47,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:47,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2020-09-24 14:57:47,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=364, Invalid=3418, Unknown=0, NotChecked=0, Total=3782 [2020-09-24 14:57:47,285 INFO L87 Difference]: Start difference. First operand 131 states and 131 transitions. Second operand 62 states. [2020-09-24 14:57:53,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:53,527 INFO L93 Difference]: Finished difference Result 151 states and 151 transitions. [2020-09-24 14:57:53,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2020-09-24 14:57:53,528 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 130 [2020-09-24 14:57:53,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:53,529 INFO L225 Difference]: With dead ends: 151 [2020-09-24 14:57:53,529 INFO L226 Difference]: Without dead ends: 145 [2020-09-24 14:57:53,531 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5121 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=2875, Invalid=18881, Unknown=0, NotChecked=0, Total=21756 [2020-09-24 14:57:53,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-09-24 14:57:53,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 143. [2020-09-24 14:57:53,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-09-24 14:57:53,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 143 transitions. [2020-09-24 14:57:53,542 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 143 transitions. Word has length 130 [2020-09-24 14:57:53,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:53,543 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 143 transitions. [2020-09-24 14:57:53,543 INFO L480 AbstractCegarLoop]: Interpolant automaton has 62 states. [2020-09-24 14:57:53,543 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 143 transitions. [2020-09-24 14:57:53,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-24 14:57:53,546 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:53,546 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:57:53,546 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 14:57:53,546 INFO L427 AbstractCegarLoop]: === Iteration 11 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:53,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:53,547 INFO L82 PathProgramCache]: Analyzing trace with hash -830445810, now seen corresponding path program 10 times [2020-09-24 14:57:53,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:53,547 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [299597282] [2020-09-24 14:57:53,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:53,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:56,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:56,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:56,297 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 485 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:57:56,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [299597282] [2020-09-24 14:57:56,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 14:57:56,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2020-09-24 14:57:56,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301458247] [2020-09-24 14:57:56,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2020-09-24 14:57:56,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:56,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2020-09-24 14:57:56,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=409, Invalid=4561, Unknown=0, NotChecked=0, Total=4970 [2020-09-24 14:57:56,300 INFO L87 Difference]: Start difference. First operand 143 states and 143 transitions. Second operand 71 states. [2020-09-24 14:58:02,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:58:02,349 INFO L93 Difference]: Finished difference Result 158 states and 159 transitions. [2020-09-24 14:58:02,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2020-09-24 14:58:02,349 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 142 [2020-09-24 14:58:02,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:58:02,350 INFO L225 Difference]: With dead ends: 158 [2020-09-24 14:58:02,350 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 14:58:02,354 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8785 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=3361, Invalid=24695, Unknown=0, NotChecked=0, Total=28056 [2020-09-24 14:58:02,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 14:58:02,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 14:58:02,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 14:58:02,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 14:58:02,355 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 142 [2020-09-24 14:58:02,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:58:02,355 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 14:58:02,355 INFO L480 AbstractCegarLoop]: Interpolant automaton has 71 states. [2020-09-24 14:58:02,355 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 14:58:02,356 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 14:58:02,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 14:58:02,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 14:58:03,092 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 117 [2020-09-24 14:58:03,529 WARN L193 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 121 [2020-09-24 14:58:03,880 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 95 [2020-09-24 14:58:04,260 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 100 [2020-09-24 14:58:04,265 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-09-24 14:58:04,266 INFO L268 CegarLoopResult]: For program point L-1-1(line -1) no Hoare annotation was computed. [2020-09-24 14:58:04,266 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-24 14:58:04,266 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|)) [2020-09-24 14:58:04,266 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 14:58:04,267 INFO L268 CegarLoopResult]: For program point fooEXIT(lines 9 18) no Hoare annotation was computed. [2020-09-24 14:58:04,267 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))))) [2020-09-24 14:58:04,267 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-24 14:58:04,268 INFO L268 CegarLoopResult]: For program point fooErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2020-09-24 14:58:04,268 INFO L268 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-09-24 14:58:04,269 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))))) [2020-09-24 14:58:04,269 INFO L268 CegarLoopResult]: For program point L12-1(lines 12 17) no Hoare annotation was computed. [2020-09-24 14:58:04,269 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-09-24 14:58:04,269 INFO L268 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-09-24 14:58:04,269 INFO L268 CegarLoopResult]: For program point L10-1(lines 10 17) no Hoare annotation was computed. [2020-09-24 14:58:04,269 INFO L268 CegarLoopResult]: For program point L12-3(line 12) no Hoare annotation was computed. [2020-09-24 14:58:04,269 INFO L268 CegarLoopResult]: For program point L10-2(line 10) no Hoare annotation was computed. [2020-09-24 14:58:04,270 INFO L268 CegarLoopResult]: For program point L10-3(line 10) no Hoare annotation was computed. [2020-09-24 14:58:04,270 INFO L268 CegarLoopResult]: For program point L10-4(lines 9 18) no Hoare annotation was computed. [2020-09-24 14:58:04,270 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 14:58:04,270 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 14:58:04,270 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 14:58:04,270 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 14:58:04,270 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 20 26) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-09-24 14:58:04,271 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 20 26) no Hoare annotation was computed. [2020-09-24 14:58:04,271 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-24 14:58:04,271 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 20 26) no Hoare annotation was computed. [2020-09-24 14:58:04,271 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-24 14:58:04,271 INFO L264 CegarLoopResult]: At program point L24-1(line 24) the Hoare annotation is: (= (select (select |#memory_int| main_~p~0.base) main_~p~0.offset) 10) [2020-09-24 14:58:04,271 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-24 14:58:04,271 INFO L268 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2020-09-24 14:58:04,272 INFO L268 CegarLoopResult]: For program point L20(lines 20 26) no Hoare annotation was computed. [2020-09-24 14:58:04,272 INFO L268 CegarLoopResult]: For program point L22-2(line 22) no Hoare annotation was computed. [2020-09-24 14:58:04,272 INFO L268 CegarLoopResult]: For program point L22-3(line 22) no Hoare annotation was computed. [2020-09-24 14:58:04,272 INFO L268 CegarLoopResult]: For program point L5-4(line 5) no Hoare annotation was computed. [2020-09-24 14:58:04,272 INFO L268 CegarLoopResult]: For program point plusFINAL(lines 4 7) no Hoare annotation was computed. [2020-09-24 14:58:04,273 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))))) [2020-09-24 14:58:04,273 INFO L268 CegarLoopResult]: For program point plusEXIT(lines 4 7) no Hoare annotation was computed. [2020-09-24 14:58:04,273 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) (<= 12 .cse2) (<= .cse2 13) (<= 13 .cse1))) (or (and (<= 17 .cse1) (<= .cse2 17) (<= 16 .cse2) (<= .cse1 17)) (not (<= 16 .cse0)) (not (<= .cse0 16))) (or (not (<= .cse0 14)) (and (<= .cse1 15) (<= 14 .cse2) (<= .cse2 15) (<= 15 .cse1)) (not (<= 14 .cse0))) (or (not (<= .cse0 17)) (and (<= .cse1 18) (<= 17 .cse2) (<= .cse2 18) (<= 18 .cse1)) (not (<= 17 .cse0))) (or (not (<= .cse0 13)) (and (<= .cse2 14) (<= 14 .cse1) (<= .cse1 14) (<= 13 .cse2)) (not (<= 13 .cse0))) (or (and .cse3 (<= 19 .cse1) (<= .cse1 19)) (not (<= 18 .cse0)) (not (<= .cse0 18))) (or (not (<= 11 .cse0)) (not (<= .cse0 11)) (and (<= .cse1 12) (<= 11 .cse2) (<= 12 .cse1) (<= .cse2 12))) (or (not (<= 19 .cse0)) (and .cse3 (= .cse1 20)) (not (<= .cse0 19))) (or (and (<= 15 .cse2) (<= 16 .cse1) (<= .cse2 16) (<= .cse1 16)) (not (<= .cse0 15)) (not (<= 15 .cse0))) (or (and (<= .cse2 11) (<= .cse1 11) (<= 11 .cse1)) (not (= .cse0 10)))))) [2020-09-24 14:58:04,274 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-09-24 14:58:04,274 INFO L268 CegarLoopResult]: For program point L5-1(line 5) no Hoare annotation was computed. [2020-09-24 14:58:04,274 INFO L268 CegarLoopResult]: For program point L5-2(line 5) no Hoare annotation was computed. [2020-09-24 14:58:04,274 INFO L268 CegarLoopResult]: For program point L5-3(line 5) no Hoare annotation was computed. [2020-09-24 14:58:04,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 02:58:04 BoogieIcfgContainer [2020-09-24 14:58:04,282 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 14:58:04,285 INFO L168 Benchmark]: Toolchain (without parser) took 49036.26 ms. Allocated memory was 137.4 MB in the beginning and 479.2 MB in the end (delta: 341.8 MB). Free memory was 100.5 MB in the beginning and 413.1 MB in the end (delta: -312.7 MB). Peak memory consumption was 355.0 MB. Max. memory is 7.1 GB. [2020-09-24 14:58:04,285 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 137.4 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 14:58:04,286 INFO L168 Benchmark]: CACSL2BoogieTranslator took 322.89 ms. Allocated memory is still 137.4 MB. Free memory was 99.8 MB in the beginning and 90.3 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-09-24 14:58:04,287 INFO L168 Benchmark]: Boogie Preprocessor took 120.32 ms. Allocated memory was 137.4 MB in the beginning and 200.3 MB in the end (delta: 62.9 MB). Free memory was 90.3 MB in the beginning and 177.5 MB in the end (delta: -87.2 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. [2020-09-24 14:58:04,288 INFO L168 Benchmark]: RCFGBuilder took 350.66 ms. Allocated memory is still 200.3 MB. Free memory was 177.5 MB in the beginning and 161.9 MB in the end (delta: 15.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 7.1 GB. [2020-09-24 14:58:04,289 INFO L168 Benchmark]: TraceAbstraction took 48232.02 ms. Allocated memory was 200.3 MB in the beginning and 479.2 MB in the end (delta: 278.9 MB). Free memory was 161.9 MB in the beginning and 413.1 MB in the end (delta: -251.2 MB). Peak memory consumption was 353.5 MB. Max. memory is 7.1 GB. [2020-09-24 14:58:04,292 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 137.4 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 322.89 ms. Allocated memory is still 137.4 MB. Free memory was 99.8 MB in the beginning and 90.3 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 120.32 ms. Allocated memory was 137.4 MB in the beginning and 200.3 MB in the end (delta: 62.9 MB). Free memory was 90.3 MB in the beginning and 177.5 MB in the end (delta: -87.2 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 350.66 ms. Allocated memory is still 200.3 MB. Free memory was 177.5 MB in the beginning and 161.9 MB in the end (delta: 15.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 48232.02 ms. Allocated memory was 200.3 MB in the beginning and 479.2 MB in the end (delta: 278.9 MB). Free memory was 161.9 MB in the beginning and 413.1 MB in the end (delta: -251.2 MB). Peak memory consumption was 353.5 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, 43 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 46.2s, OverallIterations: 11, TraceHistogramMax: 11, AutomataDifference: 33.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 327 SDtfs, 1835 SDslu, 2475 SDs, 0 SdLazy, 7922 SolverSat, 450 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1017 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 940 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26894 ImplicationChecksByTransitivity, 36.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=143occurred 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, 20 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 51 PreInvPairs, 51 NumberOfFragments, 1513 HoareAnnotationTreeSize, 51 FomulaSimplifications, 71260 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 9 FomulaSimplificationsInter, 379 FormulaSimplificationTreeSizeReductionInter, 1.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 11.6s InterpolantComputationTime, 902 NumberOfCodeBlocks, 902 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 891 ConstructedInterpolants, 0 QuantifiedInterpolants, 492192 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 1 PerfectInterpolantSequences, 485/2145 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...