/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -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-eb0fd7c [2020-09-21 11:22:28,222 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 11:22:28,227 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 11:22:28,272 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 11:22:28,274 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 11:22:28,284 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 11:22:28,286 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 11:22:28,288 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 11:22:28,290 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 11:22:28,291 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 11:22:28,292 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 11:22:28,293 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 11:22:28,294 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 11:22:28,295 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 11:22:28,296 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 11:22:28,298 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 11:22:28,299 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 11:22:28,300 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 11:22:28,302 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 11:22:28,304 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 11:22:28,305 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 11:22:28,307 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 11:22:28,308 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 11:22:28,309 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 11:22:28,312 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 11:22:28,312 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 11:22:28,312 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 11:22:28,314 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 11:22:28,314 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 11:22:28,315 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 11:22:28,316 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 11:22:28,317 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 11:22:28,318 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 11:22:28,318 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 11:22:28,320 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 11:22:28,320 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 11:22:28,321 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 11:22:28,321 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 11:22:28,321 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 11:22:28,322 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 11:22:28,323 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 11:22:28,324 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 [2020-09-21 11:22:28,351 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 11:22:28,351 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 11:22:28,353 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 11:22:28,353 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 11:22:28,353 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 11:22:28,353 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 11:22:28,353 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 11:22:28,354 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 11:22:28,354 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 11:22:28,354 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 11:22:28,354 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 11:22:28,354 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 11:22:28,355 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 11:22:28,355 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 11:22:28,355 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 11:22:28,355 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 11:22:28,355 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 11:22:28,356 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 11:22:28,356 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 11:22:28,356 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 11:22:28,356 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 11:22:28,356 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:22:28,357 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 11:22:28,357 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 11:22:28,357 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 11:22:28,357 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 11:22:28,357 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 11:22:28,358 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 11:22:28,358 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 11:22:28,358 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-21 11:22:28,824 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 11:22:28,842 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 11:22:28,846 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 11:22:28,848 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 11:22:28,849 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 11:22:28,850 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-with-pointer/simple-recursive.c [2020-09-21 11:22:28,935 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/119e966dc/7b679892303844eb92c05de76e14f636/FLAG24d3c3a22 [2020-09-21 11:22:29,526 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 11:22:29,527 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-with-pointer/simple-recursive.c [2020-09-21 11:22:29,536 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/119e966dc/7b679892303844eb92c05de76e14f636/FLAG24d3c3a22 [2020-09-21 11:22:29,844 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/119e966dc/7b679892303844eb92c05de76e14f636 [2020-09-21 11:22:29,856 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 11:22:29,861 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 11:22:29,862 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 11:22:29,863 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 11:22:29,867 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 11:22:29,868 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:22:29" (1/1) ... [2020-09-21 11:22:29,872 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47743781 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:22:29, skipping insertion in model container [2020-09-21 11:22:29,873 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:22:29" (1/1) ... [2020-09-21 11:22:29,882 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 11:22:29,906 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 11:22:30,139 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:22:30,155 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 11:22:30,173 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:22:30,193 INFO L208 MainTranslator]: Completed translation [2020-09-21 11:22:30,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:22:30 WrapperNode [2020-09-21 11:22:30,193 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 11:22:30,194 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 11:22:30,195 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 11:22:30,195 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 11:22:30,290 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:22:30" (1/1) ... [2020-09-21 11:22:30,291 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:22:30" (1/1) ... [2020-09-21 11:22:30,300 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:22:30" (1/1) ... [2020-09-21 11:22:30,300 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:22:30" (1/1) ... [2020-09-21 11:22:30,306 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:22:30" (1/1) ... [2020-09-21 11:22:30,308 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:22:30" (1/1) ... [2020-09-21 11:22:30,309 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:22:30" (1/1) ... [2020-09-21 11:22:30,311 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 11:22:30,312 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 11:22:30,312 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 11:22:30,312 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 11:22:30,313 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:22:30" (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 [2020-09-21 11:22:30,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 11:22:30,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 11:22:30,391 INFO L138 BoogieDeclarations]: Found implementation of procedure plus [2020-09-21 11:22:30,391 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-09-21 11:22:30,391 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 11:22:30,392 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 11:22:30,392 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-09-21 11:22:30,392 INFO L130 BoogieDeclarations]: Found specification of procedure plus [2020-09-21 11:22:30,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 11:22:30,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 11:22:30,393 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 11:22:30,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 11:22:30,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-21 11:22:30,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 11:22:30,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 11:22:30,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 11:22:30,638 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 11:22:30,638 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-21 11:22:30,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:22:30 BoogieIcfgContainer [2020-09-21 11:22:30,645 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 11:22:30,647 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 11:22:30,647 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 11:22:30,651 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 11:22:30,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:22:29" (1/3) ... [2020-09-21 11:22:30,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20aa5918 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:22:30, skipping insertion in model container [2020-09-21 11:22:30,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:22:30" (2/3) ... [2020-09-21 11:22:30,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20aa5918 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:22:30, skipping insertion in model container [2020-09-21 11:22:30,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:22:30" (3/3) ... [2020-09-21 11:22:30,655 INFO L109 eAbstractionObserver]: Analyzing ICFG simple-recursive.c [2020-09-21 11:22:30,670 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 11:22:30,681 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 11:22:30,707 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 11:22:30,741 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 11:22:30,742 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 11:22:30,742 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 11:22:30,742 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 11:22:30,742 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 11:22:30,742 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 11:22:30,743 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 11:22:30,743 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 11:22:30,768 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-09-21 11:22:30,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-21 11:22:30,776 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:22:30,778 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:22:30,778 INFO L427 AbstractCegarLoop]: === Iteration 1 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:22:30,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:22:30,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1703201428, now seen corresponding path program 1 times [2020-09-21 11:22:30,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:22:30,800 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1359701353] [2020-09-21 11:22:30,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:22:30,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:22:31,091 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:22:31,091 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:22:31,091 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:22:31,092 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:22:31,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 11:22:31,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:22:31,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-09-21 11:22:31,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:22:31,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:22:31,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 11:22:31,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:22:31,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:22:31,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:22:31,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:22:31,225 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:22:31,225 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:22:31,225 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:22:31,226 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:22:31,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:22:31,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:22:31,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:22:31,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:22:31,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:22:31,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:22:31,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:22:31,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:22:31,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:22:31,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1359701353] [2020-09-21 11:22:31,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:22:31,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 11:22:31,243 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531391529] [2020-09-21 11:22:31,249 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 11:22:31,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:22:31,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 11:22:31,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:22:31,268 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 6 states. [2020-09-21 11:22:31,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:22:31,478 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2020-09-21 11:22:31,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 11:22:31,480 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-09-21 11:22:31,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:22:31,493 INFO L225 Difference]: With dead ends: 39 [2020-09-21 11:22:31,493 INFO L226 Difference]: Without dead ends: 18 [2020-09-21 11:22:31,498 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 [2020-09-21 11:22:31,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-09-21 11:22:31,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2020-09-21 11:22:31,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-09-21 11:22:31,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-09-21 11:22:31,552 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 11 [2020-09-21 11:22:31,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:22:31,552 INFO L479 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-09-21 11:22:31,553 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 11:22:31,553 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-09-21 11:22:31,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-21 11:22:31,554 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:22:31,554 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:22:31,555 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 11:22:31,555 INFO L427 AbstractCegarLoop]: === Iteration 2 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:22:31,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:22:31,556 INFO L82 PathProgramCache]: Analyzing trace with hash 1207469216, now seen corresponding path program 1 times [2020-09-21 11:22:31,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:22:31,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2050069467] [2020-09-21 11:22:31,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:22:31,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:22:31,725 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:22:31,725 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:22:31,726 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:22:31,728 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:22:31,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-21 11:22:31,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:22:31,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-09-21 11:22:31,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:22:31,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-21 11:22:31,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 11:22:31,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-21 11:22:31,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:22:31,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:22:31,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:22:31,916 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:22:31,916 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:22:31,916 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:22:31,921 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:22:31,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:22:31,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:22:31,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 11:22:31,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:22:31,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:22:31,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:22:31,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:22:31,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:22:31,941 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:22:31,941 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2050069467] [2020-09-21 11:22:31,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:22:31,944 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-21 11:22:31,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163508208] [2020-09-21 11:22:31,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-21 11:22:31,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:22:31,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-21 11:22:31,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-21 11:22:31,950 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 10 states. [2020-09-21 11:22:32,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:22:32,248 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2020-09-21 11:22:32,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-21 11:22:32,248 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 16 [2020-09-21 11:22:32,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:22:32,249 INFO L225 Difference]: With dead ends: 26 [2020-09-21 11:22:32,250 INFO L226 Difference]: Without dead ends: 23 [2020-09-21 11:22:32,251 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 [2020-09-21 11:22:32,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-09-21 11:22:32,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2020-09-21 11:22:32,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-09-21 11:22:32,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2020-09-21 11:22:32,260 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 16 [2020-09-21 11:22:32,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:22:32,260 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2020-09-21 11:22:32,260 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-21 11:22:32,260 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2020-09-21 11:22:32,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-21 11:22:32,261 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:22:32,262 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:22:32,262 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 11:22:32,262 INFO L427 AbstractCegarLoop]: === Iteration 3 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:22:32,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:22:32,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1866674708, now seen corresponding path program 2 times [2020-09-21 11:22:32,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:22:32,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [982612003] [2020-09-21 11:22:32,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:22:32,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:22:32,526 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:22:32,526 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:22:32,526 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:22:32,527 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:22:32,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-21 11:22:32,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:22:32,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239 [2020-09-21 11:22:32,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:22:32,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-21 11:22:32,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 11:22:32,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-21 11:22:32,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:22:32,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:22:32,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:22:32,716 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:22:32,716 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:22:32,716 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:22:32,717 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:22:32,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:22:32,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:22:32,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:22:32,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:22:32,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:22:32,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:22:32,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:22:32,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:22:32,723 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:22:32,723 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [982612003] [2020-09-21 11:22:32,724 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:22:32,724 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-21 11:22:32,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458431072] [2020-09-21 11:22:32,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-21 11:22:32,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:22:32,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-21 11:22:32,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-09-21 11:22:32,726 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 14 states. [2020-09-21 11:22:33,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:22:33,162 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2020-09-21 11:22:33,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-21 11:22:33,164 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 21 [2020-09-21 11:22:33,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:22:33,165 INFO L225 Difference]: With dead ends: 31 [2020-09-21 11:22:33,165 INFO L226 Difference]: Without dead ends: 28 [2020-09-21 11:22:33,166 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 [2020-09-21 11:22:33,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-21 11:22:33,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2020-09-21 11:22:33,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-09-21 11:22:33,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2020-09-21 11:22:33,176 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 21 [2020-09-21 11:22:33,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:22:33,176 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2020-09-21 11:22:33,177 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-21 11:22:33,177 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2020-09-21 11:22:33,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-21 11:22:33,178 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:22:33,178 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:22:33,179 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 11:22:33,179 INFO L427 AbstractCegarLoop]: === Iteration 4 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:22:33,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:22:33,179 INFO L82 PathProgramCache]: Analyzing trace with hash 1116654880, now seen corresponding path program 3 times [2020-09-21 11:22:33,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:22:33,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1889190354] [2020-09-21 11:22:33,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:22:33,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:22:33,456 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:22:33,456 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:22:33,456 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:22:33,457 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:22:33,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-21 11:22:33,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:22:33,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 256 [2020-09-21 11:22:33,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:22:33,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-09-21 11:22:33,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 11:22:33,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-21 11:22:33,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:22:33,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:22:33,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:22:33,734 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:22:33,734 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:22:33,734 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:22:33,734 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:22:33,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:22:33,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:22:33,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:22:33,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:22:33,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:22:33,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:22:33,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:22:33,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:22:33,741 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:22:33,741 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1889190354] [2020-09-21 11:22:33,742 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:22:33,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-21 11:22:33,742 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161889497] [2020-09-21 11:22:33,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-21 11:22:33,743 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:22:33,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-21 11:22:33,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2020-09-21 11:22:33,744 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 18 states. [2020-09-21 11:22:34,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:22:34,439 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2020-09-21 11:22:34,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-21 11:22:34,440 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 26 [2020-09-21 11:22:34,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:22:34,441 INFO L225 Difference]: With dead ends: 36 [2020-09-21 11:22:34,441 INFO L226 Difference]: Without dead ends: 33 [2020-09-21 11:22:34,443 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=208, Invalid=982, Unknown=0, NotChecked=0, Total=1190 [2020-09-21 11:22:34,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-09-21 11:22:34,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2020-09-21 11:22:34,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-09-21 11:22:34,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2020-09-21 11:22:34,455 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 26 [2020-09-21 11:22:34,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:22:34,455 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2020-09-21 11:22:34,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-21 11:22:34,456 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2020-09-21 11:22:34,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-21 11:22:34,457 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:22:34,457 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:22:34,457 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 11:22:34,457 INFO L427 AbstractCegarLoop]: === Iteration 5 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:22:34,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:22:34,458 INFO L82 PathProgramCache]: Analyzing trace with hash 1506163092, now seen corresponding path program 4 times [2020-09-21 11:22:34,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:22:34,458 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1917546511] [2020-09-21 11:22:34,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:22:34,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:22:34,822 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:22:34,822 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:22:34,823 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:22:34,823 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:22:34,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-21 11:22:34,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:22:34,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 344 [2020-09-21 11:22:34,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:22:34,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-09-21 11:22:34,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 11:22:34,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-21 11:22:34,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:22:35,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:22:35,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:22:35,214 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:22:35,215 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:22:35,216 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:22:35,216 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:22:35,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:22:35,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:22:35,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:22:35,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:22:35,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:22:35,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:22:35,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:22:35,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:22:35,229 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:22:35,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1917546511] [2020-09-21 11:22:35,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:22:35,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-09-21 11:22:35,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22804871] [2020-09-21 11:22:35,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-09-21 11:22:35,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:22:35,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-09-21 11:22:35,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=393, Unknown=0, NotChecked=0, Total=462 [2020-09-21 11:22:35,235 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 22 states. [2020-09-21 11:22:36,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:22:36,217 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2020-09-21 11:22:36,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-21 11:22:36,218 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 31 [2020-09-21 11:22:36,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:22:36,219 INFO L225 Difference]: With dead ends: 41 [2020-09-21 11:22:36,219 INFO L226 Difference]: Without dead ends: 38 [2020-09-21 11:22:36,222 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=313, Invalid=1579, Unknown=0, NotChecked=0, Total=1892 [2020-09-21 11:22:36,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-21 11:22:36,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-09-21 11:22:36,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-09-21 11:22:36,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2020-09-21 11:22:36,236 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 31 [2020-09-21 11:22:36,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:22:36,237 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2020-09-21 11:22:36,237 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-09-21 11:22:36,237 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2020-09-21 11:22:36,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-21 11:22:36,240 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:22:36,240 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:22:36,241 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 11:22:36,241 INFO L427 AbstractCegarLoop]: === Iteration 6 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:22:36,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:22:36,241 INFO L82 PathProgramCache]: Analyzing trace with hash 1044673952, now seen corresponding path program 5 times [2020-09-21 11:22:36,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:22:36,242 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [656401130] [2020-09-21 11:22:36,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:22:36,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:22:36,797 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:22:36,798 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:22:36,798 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:22:36,798 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:22:36,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-21 11:22:36,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:22:36,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 517 [2020-09-21 11:22:36,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:22:36,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 46 [2020-09-21 11:22:36,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 11:22:36,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-21 11:22:36,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:22:37,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:22:37,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:22:37,189 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:22:37,193 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:22:37,194 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:22:37,194 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:22:37,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:22:37,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:22:37,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 11:22:37,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:22:37,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:22:37,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:22:37,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:22:37,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:22:37,210 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:22:37,211 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [656401130] [2020-09-21 11:22:37,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:22:37,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-09-21 11:22:37,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692015130] [2020-09-21 11:22:37,214 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-09-21 11:22:37,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:22:37,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-09-21 11:22:37,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=556, Unknown=0, NotChecked=0, Total=650 [2020-09-21 11:22:37,217 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 26 states. [2020-09-21 11:22:38,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:22:38,185 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2020-09-21 11:22:38,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-09-21 11:22:38,186 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 36 [2020-09-21 11:22:38,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:22:38,188 INFO L225 Difference]: With dead ends: 46 [2020-09-21 11:22:38,188 INFO L226 Difference]: Without dead ends: 43 [2020-09-21 11:22:38,190 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 512 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=439, Invalid=2317, Unknown=0, NotChecked=0, Total=2756 [2020-09-21 11:22:38,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-09-21 11:22:38,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2020-09-21 11:22:38,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-21 11:22:38,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2020-09-21 11:22:38,198 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 36 [2020-09-21 11:22:38,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:22:38,198 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2020-09-21 11:22:38,198 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-09-21 11:22:38,198 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2020-09-21 11:22:38,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-21 11:22:38,200 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:22:38,200 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:22:38,200 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 11:22:38,200 INFO L427 AbstractCegarLoop]: === Iteration 7 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:22:38,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:22:38,201 INFO L82 PathProgramCache]: Analyzing trace with hash -272244460, now seen corresponding path program 6 times [2020-09-21 11:22:38,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:22:38,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [248214683] [2020-09-21 11:22:38,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:22:38,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:22:38,846 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:22:38,847 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:22:38,847 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:22:38,847 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:22:38,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-21 11:22:38,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:22:38,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 621 [2020-09-21 11:22:38,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:22:38,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 54 [2020-09-21 11:22:38,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 11:22:38,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-21 11:22:38,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:22:39,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:22:39,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:22:39,327 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:22:39,327 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:22:39,327 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:22:39,328 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:22:39,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:22:39,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:22:39,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:22:39,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:22:39,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:22:39,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:22:39,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:22:39,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:22:39,339 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:22:39,340 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [248214683] [2020-09-21 11:22:39,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:22:39,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-09-21 11:22:39,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827063281] [2020-09-21 11:22:39,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-09-21 11:22:39,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:22:39,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-09-21 11:22:39,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=747, Unknown=0, NotChecked=0, Total=870 [2020-09-21 11:22:39,343 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 30 states. [2020-09-21 11:22:40,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:22:40,709 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2020-09-21 11:22:40,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-09-21 11:22:40,710 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 41 [2020-09-21 11:22:40,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:22:40,712 INFO L225 Difference]: With dead ends: 51 [2020-09-21 11:22:40,712 INFO L226 Difference]: Without dead ends: 48 [2020-09-21 11:22:40,715 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 732 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=586, Invalid=3196, Unknown=0, NotChecked=0, Total=3782 [2020-09-21 11:22:40,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-21 11:22:40,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-09-21 11:22:40,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-09-21 11:22:40,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2020-09-21 11:22:40,723 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 41 [2020-09-21 11:22:40,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:22:40,724 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2020-09-21 11:22:40,724 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-09-21 11:22:40,724 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2020-09-21 11:22:40,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-21 11:22:40,725 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:22:40,725 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:22:40,726 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 11:22:40,726 INFO L427 AbstractCegarLoop]: === Iteration 8 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:22:40,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:22:40,726 INFO L82 PathProgramCache]: Analyzing trace with hash 1667333664, now seen corresponding path program 7 times [2020-09-21 11:22:40,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:22:40,727 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1037564724] [2020-09-21 11:22:40,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:22:40,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:22:41,498 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:22:41,498 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:22:41,498 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:22:41,499 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:22:41,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-21 11:22:41,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:22:41,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 747 [2020-09-21 11:22:41,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:22:41,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 62 [2020-09-21 11:22:41,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 11:22:41,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-21 11:22:41,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:22:42,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:22:42,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:22:42,194 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:22:42,194 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:22:42,194 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:22:42,194 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:22:42,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:22:42,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:22:42,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:22:42,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:22:42,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:22:42,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:22:42,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:22:42,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:22:42,204 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:22:42,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1037564724] [2020-09-21 11:22:42,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:22:42,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-09-21 11:22:42,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916846433] [2020-09-21 11:22:42,206 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-09-21 11:22:42,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:22:42,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-09-21 11:22:42,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=966, Unknown=0, NotChecked=0, Total=1122 [2020-09-21 11:22:42,208 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 34 states. [2020-09-21 11:22:43,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:22:43,926 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2020-09-21 11:22:43,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-09-21 11:22:43,928 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 46 [2020-09-21 11:22:43,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:22:43,929 INFO L225 Difference]: With dead ends: 56 [2020-09-21 11:22:43,929 INFO L226 Difference]: Without dead ends: 53 [2020-09-21 11:22:43,931 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=754, Invalid=4216, Unknown=0, NotChecked=0, Total=4970 [2020-09-21 11:22:43,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-09-21 11:22:43,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2020-09-21 11:22:43,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-21 11:22:43,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2020-09-21 11:22:43,940 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 46 [2020-09-21 11:22:43,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:22:43,940 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2020-09-21 11:22:43,940 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-09-21 11:22:43,941 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2020-09-21 11:22:43,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-21 11:22:43,942 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:22:43,942 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:22:43,942 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 11:22:43,942 INFO L427 AbstractCegarLoop]: === Iteration 9 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:22:43,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:22:43,943 INFO L82 PathProgramCache]: Analyzing trace with hash -168154988, now seen corresponding path program 8 times [2020-09-21 11:22:43,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:22:43,943 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [368900712] [2020-09-21 11:22:43,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:22:43,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:22:44,923 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:22:44,923 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:22:44,923 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:22:44,924 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:22:44,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-21 11:22:44,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:22:44,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 953 [2020-09-21 11:22:44,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:22:44,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 70 [2020-09-21 11:22:44,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 11:22:44,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-21 11:22:44,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:22:45,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:22:45,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:22:45,713 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:22:45,714 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:22:45,714 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:22:45,715 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:22:45,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:22:45,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:22:45,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:22:45,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:22:45,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:22:45,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:22:45,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:22:45,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:22:45,723 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:22:45,724 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [368900712] [2020-09-21 11:22:45,724 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:22:45,724 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-09-21 11:22:45,725 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625089623] [2020-09-21 11:22:45,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-09-21 11:22:45,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:22:45,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-09-21 11:22:45,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=1213, Unknown=0, NotChecked=0, Total=1406 [2020-09-21 11:22:45,726 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 38 states. [2020-09-21 11:22:47,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:22:47,763 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2020-09-21 11:22:47,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-09-21 11:22:47,764 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 51 [2020-09-21 11:22:47,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:22:47,766 INFO L225 Difference]: With dead ends: 61 [2020-09-21 11:22:47,766 INFO L226 Difference]: Without dead ends: 58 [2020-09-21 11:22:47,769 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1289 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=943, Invalid=5377, Unknown=0, NotChecked=0, Total=6320 [2020-09-21 11:22:47,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-21 11:22:47,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-09-21 11:22:47,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-09-21 11:22:47,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2020-09-21 11:22:47,778 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 51 [2020-09-21 11:22:47,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:22:47,779 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2020-09-21 11:22:47,779 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-09-21 11:22:47,779 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2020-09-21 11:22:47,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-21 11:22:47,780 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:22:47,780 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:22:47,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 11:22:47,781 INFO L427 AbstractCegarLoop]: === Iteration 10 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:22:47,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:22:47,781 INFO L82 PathProgramCache]: Analyzing trace with hash 539879072, now seen corresponding path program 9 times [2020-09-21 11:22:47,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:22:47,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1332698386] [2020-09-21 11:22:47,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:22:47,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:22:48,878 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:22:48,878 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:22:48,878 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:22:48,878 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:22:48,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-21 11:22:48,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:22:48,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1070 [2020-09-21 11:22:48,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:22:48,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 78 [2020-09-21 11:22:48,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 11:22:48,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-21 11:22:48,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:22:49,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:22:49,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:22:49,876 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:22:49,877 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:22:49,877 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:22:49,877 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:22:49,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:22:49,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:22:49,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:22:49,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:22:49,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:22:49,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:22:49,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:22:49,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:22:49,889 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:22:49,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1332698386] [2020-09-21 11:22:49,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:22:49,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-09-21 11:22:49,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741091803] [2020-09-21 11:22:49,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-09-21 11:22:49,891 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:22:49,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-09-21 11:22:49,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=1488, Unknown=0, NotChecked=0, Total=1722 [2020-09-21 11:22:49,893 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 42 states. [2020-09-21 11:22:52,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:22:52,325 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions. [2020-09-21 11:22:52,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-09-21 11:22:52,326 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 56 [2020-09-21 11:22:52,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:22:52,327 INFO L225 Difference]: With dead ends: 66 [2020-09-21 11:22:52,327 INFO L226 Difference]: Without dead ends: 63 [2020-09-21 11:22:52,331 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1626 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1153, Invalid=6679, Unknown=0, NotChecked=0, Total=7832 [2020-09-21 11:22:52,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-09-21 11:22:52,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2020-09-21 11:22:52,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-21 11:22:52,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2020-09-21 11:22:52,350 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 56 [2020-09-21 11:22:52,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:22:52,350 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2020-09-21 11:22:52,350 INFO L480 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-09-21 11:22:52,351 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2020-09-21 11:22:52,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-21 11:22:52,353 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:22:52,353 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:22:52,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-21 11:22:52,353 INFO L427 AbstractCegarLoop]: === Iteration 11 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:22:52,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:22:52,354 INFO L82 PathProgramCache]: Analyzing trace with hash -1424289772, now seen corresponding path program 10 times [2020-09-21 11:22:52,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:22:52,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [911129993] [2020-09-21 11:22:52,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:22:52,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:22:52,434 FATAL L256 erpolLogProxyWrapper]: Difference in size: 76 [2020-09-21 11:22:52,434 FATAL L256 erpolLogProxyWrapper]: Difference in depth: -85 [2020-09-21 11:22:52,435 FATAL L256 erpolLogProxyWrapper]: Difference in width: 85 [2020-09-21 11:22:52,435 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:22:52,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-21 11:22:52,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:22:52,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-21 11:22:52,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:22:52,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-21 11:22:52,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-09-21 11:22:52,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 11:22:52,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:22:52,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:22:52,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:22:52,582 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:22:52,582 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:22:52,582 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:22:52,584 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:22:52,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:22:52,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:22:52,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:22:52,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:22:52,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:22:52,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:22:52,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:22:52,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:22:52,600 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 55 proven. 1 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2020-09-21 11:22:52,601 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [911129993] [2020-09-21 11:22:52,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:22:52,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-21 11:22:52,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528989864] [2020-09-21 11:22:52,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-21 11:22:52,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:22:52,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-21 11:22:52,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-09-21 11:22:52,606 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand 10 states. [2020-09-21 11:22:52,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:22:52,815 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2020-09-21 11:22:52,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-21 11:22:52,815 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 61 [2020-09-21 11:22:52,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:22:52,818 INFO L225 Difference]: With dead ends: 62 [2020-09-21 11:22:52,818 INFO L226 Difference]: Without dead ends: 0 [2020-09-21 11:22:52,821 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2020-09-21 11:22:52,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-21 11:22:52,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-21 11:22:52,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-21 11:22:52,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-21 11:22:52,822 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 61 [2020-09-21 11:22:52,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:22:52,823 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-21 11:22:52,823 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-21 11:22:52,823 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-21 11:22:52,823 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-21 11:22:52,823 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-21 11:22:52,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-21 11:22:53,332 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 80 [2020-09-21 11:22:53,593 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 84 [2020-09-21 11:22:53,809 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 59 [2020-09-21 11:22:54,007 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 64 [2020-09-21 11:22:54,011 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-21 11:22:54,014 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|)) [2020-09-21 11:22:54,014 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-21 11:22:54,014 INFO L268 CegarLoopResult]: For program point fooEXIT(lines 9 18) no Hoare annotation was computed. [2020-09-21 11:22:54,015 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 11)) (<= .cse1 11)) (or (not (<= .cse0 13)) (<= .cse1 13)) (or (<= .cse1 20) (not (<= .cse0 20))) (or (<= .cse1 18) (not (<= .cse0 18))) (or (not (<= .cse0 15)) (<= .cse1 15)) (or (<= .cse1 17) (not (<= .cse0 17))) (or (not (= .cse0 10)) (= 10 .cse1)) (or (<= .cse1 12) (not (<= .cse0 12))) (or (<= .cse1 16) (not (<= .cse0 16))) (or (not (<= .cse0 19)) (<= .cse1 19)) (or (<= .cse1 14) (not (<= .cse0 14))))) [2020-09-21 11:22:54,016 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-21 11:22:54,016 INFO L268 CegarLoopResult]: For program point fooErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2020-09-21 11:22:54,017 INFO L268 CegarLoopResult]: For program point L12(lines 12 17) no Hoare annotation was computed. [2020-09-21 11:22:54,017 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 (<= .cse0 13)) (and (<= .cse1 13) (<= .cse2 13))) (or (and (<= .cse1 14) (<= .cse2 14)) (not (<= .cse0 14))) (or (and (<= .cse2 19) (<= .cse1 20)) (not (<= .cse0 20))) (or (and (<= .cse1 18) (<= .cse2 18)) (not (<= .cse0 18))) (or (not (<= .cse0 12)) (and (<= .cse2 12) (<= .cse1 12))) (or (and (<= .cse1 15) (<= .cse2 15)) (not (<= .cse0 15))) (or (not (= .cse0 10)) (and (= .cse2 10) (= 10 .cse1))) (or (not (<= .cse0 11)) (and (<= .cse1 11) (<= .cse2 11))) (or (and (<= .cse2 17) (<= .cse1 17)) (not (<= .cse0 17))) (or (and (<= .cse1 16) (<= .cse2 16)) (not (<= .cse0 16))))) [2020-09-21 11:22:54,017 INFO L268 CegarLoopResult]: For program point L10(lines 10 17) no Hoare annotation was computed. [2020-09-21 11:22:54,017 INFO L268 CegarLoopResult]: For program point L10-1(lines 9 18) no Hoare annotation was computed. [2020-09-21 11:22:54,017 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-21 11:22:54,018 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-21 11:22:54,018 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-21 11:22:54,018 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-21 11:22:54,018 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 20 26) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-09-21 11:22:54,018 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 20 26) no Hoare annotation was computed. [2020-09-21 11:22:54,019 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) [2020-09-21 11:22:54,019 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 20 26) no Hoare annotation was computed. [2020-09-21 11:22:54,019 INFO L268 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-09-21 11:22:54,019 INFO L268 CegarLoopResult]: For program point plusFINAL(lines 4 7) no Hoare annotation was computed. [2020-09-21 11:22:54,019 INFO L264 CegarLoopResult]: At program point plusENTRY(lines 4 7) the Hoare annotation is: (let ((.cse1 (select (select |old(#memory_int)| |plus_#in~p.base|) |plus_#in~p.offset|)) (.cse0 (select (select |#memory_int| |plus_#in~p.base|) |plus_#in~p.offset|))) (and (or (= .cse0 10) (not (= .cse1 10))) (or (<= .cse0 11) (not (<= .cse1 11))) (or (not (<= .cse1 13)) (<= .cse0 13)) (or (<= .cse0 18) (not (<= .cse1 18))) (or (not (<= .cse1 15)) (<= .cse0 15)) (or (not (<= .cse1 14)) (<= .cse0 14)) (or (<= .cse0 19) (not (<= .cse1 19))) (or (<= .cse0 16) (not (<= .cse1 16))) (or (not (<= .cse1 17)) (<= .cse0 17)) (or (not (<= .cse1 12)) (<= .cse0 12)))) [2020-09-21 11:22:54,020 INFO L268 CegarLoopResult]: For program point plusEXIT(lines 4 7) no Hoare annotation was computed. [2020-09-21 11:22:54,021 INFO L264 CegarLoopResult]: At program point L6(line 6) the Hoare annotation is: (let ((.cse2 (select (select |old(#memory_int)| |plus_#in~p.base|) |plus_#in~p.offset|)) (.cse1 (select (select |#memory_int| plus_~p.base) plus_~p.offset)) (.cse0 (select (select |#memory_int| |plus_#in~p.base|) |plus_#in~p.offset|))) (and (or (and (<= .cse0 16) (<= .cse1 16)) (not (<= .cse2 15))) (or (not (<= .cse2 17)) (and (<= .cse1 18) (<= .cse0 18))) (or (not (<= .cse2 12)) (and (<= .cse1 13) (<= .cse0 13))) (or (not (<= .cse2 18)) (<= .cse1 19)) (or (and (<= .cse1 12) (<= .cse0 12)) (not (<= .cse2 11))) (or (and (<= .cse0 14) (<= .cse1 14)) (not (<= .cse2 13))) (or (and (<= .cse0 17) (<= .cse1 17)) (not (<= .cse2 16))) (or (and (<= .cse0 11) (<= .cse1 11)) (not (= .cse2 10))) (or (<= .cse1 20) (not (<= .cse2 19))) (or (not (<= .cse2 14)) (and (<= .cse1 15) (<= .cse0 15))))) [2020-09-21 11:22:54,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 11:22:54 BoogieIcfgContainer [2020-09-21 11:22:54,033 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 11:22:54,035 INFO L168 Benchmark]: Toolchain (without parser) took 24176.94 ms. Allocated memory was 139.5 MB in the beginning and 407.4 MB in the end (delta: 267.9 MB). Free memory was 101.2 MB in the beginning and 288.3 MB in the end (delta: -187.1 MB). Peak memory consumption was 260.8 MB. Max. memory is 7.1 GB. [2020-09-21 11:22:54,040 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 139.5 MB. Free memory was 119.7 MB in the beginning and 119.3 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-09-21 11:22:54,042 INFO L168 Benchmark]: CACSL2BoogieTranslator took 331.66 ms. Allocated memory is still 139.5 MB. Free memory was 100.3 MB in the beginning and 90.9 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-09-21 11:22:54,044 INFO L168 Benchmark]: Boogie Preprocessor took 117.03 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 90.9 MB in the beginning and 179.9 MB in the end (delta: -88.9 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. [2020-09-21 11:22:54,044 INFO L168 Benchmark]: RCFGBuilder took 334.28 ms. Allocated memory is still 202.4 MB. Free memory was 179.9 MB in the beginning and 165.1 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. [2020-09-21 11:22:54,051 INFO L168 Benchmark]: TraceAbstraction took 23385.75 ms. Allocated memory was 202.4 MB in the beginning and 407.4 MB in the end (delta: 205.0 MB). Free memory was 165.1 MB in the beginning and 288.3 MB in the end (delta: -123.2 MB). Peak memory consumption was 261.8 MB. Max. memory is 7.1 GB. [2020-09-21 11:22:54,057 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 139.5 MB. Free memory was 119.7 MB in the beginning and 119.3 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 331.66 ms. Allocated memory is still 139.5 MB. Free memory was 100.3 MB in the beginning and 90.9 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 117.03 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 90.9 MB in the beginning and 179.9 MB in the end (delta: -88.9 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 334.28 ms. Allocated memory is still 202.4 MB. Free memory was 179.9 MB in the beginning and 165.1 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 23385.75 ms. Allocated memory was 202.4 MB in the beginning and 407.4 MB in the end (delta: 205.0 MB). Free memory was 165.1 MB in the beginning and 288.3 MB in the end (delta: -123.2 MB). Peak memory consumption was 261.8 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: 22.0s, OverallIterations: 11, TraceHistogramMax: 11, AutomataDifference: 11.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 118 SDtfs, 187 SDslu, 802 SDs, 0 SdLazy, 2071 SolverSat, 370 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 514 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 481 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5801 ImplicationChecksByTransitivity, 12.6s 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, 47 PreInvPairs, 47 NumberOfFragments, 826 HoareAnnotationTreeSize, 47 FomulaSimplifications, 85652 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 9 FomulaSimplificationsInter, 1028 FormulaSimplificationTreeSizeReductionInter, 0.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 9.8s InterpolantComputationTime, 396 NumberOfCodeBlocks, 396 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 385 ConstructedInterpolants, 0 QuantifiedInterpolants, 83310 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 1 PerfectInterpolantSequences, 244/935 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...