/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/sumt5.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 19:54:21,235 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 19:54:21,237 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 19:54:21,271 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 19:54:21,271 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 19:54:21,281 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 19:54:21,282 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 19:54:21,286 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 19:54:21,289 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 19:54:21,289 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 19:54:21,291 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 19:54:21,293 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 19:54:21,293 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 19:54:21,297 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 19:54:21,298 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 19:54:21,300 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 19:54:21,300 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 19:54:21,303 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 19:54:21,305 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 19:54:21,312 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 19:54:21,314 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 19:54:21,315 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 19:54:21,316 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 19:54:21,317 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 19:54:21,321 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 19:54:21,322 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 19:54:21,322 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 19:54:21,325 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 19:54:21,325 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 19:54:21,335 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-21 19:54:21,343 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 19:54:21,344 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 19:54:21,345 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 19:54:21,346 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 19:54:21,389 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 19:54:21,389 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 19:54:21,391 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 19:54:21,392 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 19:54:21,392 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 19:54:21,392 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 19:54:21,393 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 19:54:21,393 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 19:54:21,393 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 19:54:21,393 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 19:54:21,394 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 19:54:21,394 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 19:54:21,395 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 19:54:21,395 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 19:54:21,395 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 19:54:21,395 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 19:54:21,396 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 19:54:21,396 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 19:54:21,396 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 19:54:21,396 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 19:54:21,396 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 19:54:21,396 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 19:54:21,397 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 19:54:21,397 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 19:54:21,397 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 19:54:21,397 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 19:54:21,397 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 19:54:21,398 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 19:54:21,398 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 19:54:21,398 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; [2020-08-21 19:54:21,709 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 19:54:21,721 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 19:54:21,724 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 19:54:21,726 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 19:54:21,727 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 19:54:21,727 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/sumt5.c [2020-08-21 19:54:21,803 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9c5f77f8a/f2333bb7d3f844f5b5ab4ae138e6d994/FLAG9e10059d1 [2020-08-21 19:54:22,210 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 19:54:22,211 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops-crafted-1/sumt5.c [2020-08-21 19:54:22,218 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9c5f77f8a/f2333bb7d3f844f5b5ab4ae138e6d994/FLAG9e10059d1 [2020-08-21 19:54:22,591 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9c5f77f8a/f2333bb7d3f844f5b5ab4ae138e6d994 [2020-08-21 19:54:22,599 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 19:54:22,601 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 19:54:22,602 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 19:54:22,602 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 19:54:22,606 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 19:54:22,607 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 07:54:22" (1/1) ... [2020-08-21 19:54:22,613 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b8f57a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:54:22, skipping insertion in model container [2020-08-21 19:54:22,614 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 07:54:22" (1/1) ... [2020-08-21 19:54:22,623 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 19:54:22,646 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 19:54:22,829 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 19:54:22,833 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 19:54:22,854 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 19:54:22,869 INFO L208 MainTranslator]: Completed translation [2020-08-21 19:54:22,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:54:22 WrapperNode [2020-08-21 19:54:22,870 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 19:54:22,871 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 19:54:22,871 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 19:54:22,871 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 19:54:22,886 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:54:22" (1/1) ... [2020-08-21 19:54:22,887 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:54:22" (1/1) ... [2020-08-21 19:54:22,892 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:54:22" (1/1) ... [2020-08-21 19:54:22,893 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:54:22" (1/1) ... [2020-08-21 19:54:22,998 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:54:22" (1/1) ... [2020-08-21 19:54:23,009 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:54:22" (1/1) ... [2020-08-21 19:54:23,010 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:54:22" (1/1) ... [2020-08-21 19:54:23,016 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 19:54:23,017 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 19:54:23,018 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 19:54:23,018 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 19:54:23,019 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:54:22" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 19:54:23,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 19:54:23,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 19:54:23,088 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 19:54:23,089 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-21 19:54:23,089 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 19:54:23,089 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 19:54:23,090 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 19:54:23,090 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 19:54:23,091 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-21 19:54:23,092 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 19:54:23,092 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 19:54:23,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 19:54:23,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 19:54:23,322 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 19:54:23,322 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-21 19:54:23,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 07:54:23 BoogieIcfgContainer [2020-08-21 19:54:23,326 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 19:54:23,327 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 19:54:23,327 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 19:54:23,330 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 19:54:23,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 07:54:22" (1/3) ... [2020-08-21 19:54:23,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ee45157 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 07:54:23, skipping insertion in model container [2020-08-21 19:54:23,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:54:22" (2/3) ... [2020-08-21 19:54:23,332 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ee45157 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 07:54:23, skipping insertion in model container [2020-08-21 19:54:23,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 07:54:23" (3/3) ... [2020-08-21 19:54:23,334 INFO L109 eAbstractionObserver]: Analyzing ICFG sumt5.c [2020-08-21 19:54:23,344 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 19:54:23,351 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 19:54:23,365 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 19:54:23,387 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 19:54:23,387 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 19:54:23,387 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 19:54:23,387 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 19:54:23,388 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 19:54:23,388 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 19:54:23,388 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 19:54:23,388 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 19:54:23,407 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-08-21 19:54:23,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-08-21 19:54:23,414 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:54:23,415 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:54:23,415 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:54:23,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:54:23,422 INFO L82 PathProgramCache]: Analyzing trace with hash 333887070, now seen corresponding path program 1 times [2020-08-21 19:54:23,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:54:23,431 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [944098164] [2020-08-21 19:54:23,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:54:23,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:54:23,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:54:23,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:54:23,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:54:23,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [944098164] [2020-08-21 19:54:23,588 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:54:23,588 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 19:54:23,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386159488] [2020-08-21 19:54:23,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 19:54:23,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:54:23,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 19:54:23,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 19:54:23,611 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 3 states. [2020-08-21 19:54:23,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:54:23,691 INFO L93 Difference]: Finished difference Result 37 states and 45 transitions. [2020-08-21 19:54:23,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 19:54:23,694 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-08-21 19:54:23,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:54:23,707 INFO L225 Difference]: With dead ends: 37 [2020-08-21 19:54:23,707 INFO L226 Difference]: Without dead ends: 18 [2020-08-21 19:54:23,711 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 19:54:23,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-08-21 19:54:23,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-08-21 19:54:23,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-08-21 19:54:23,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2020-08-21 19:54:23,777 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 12 [2020-08-21 19:54:23,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:54:23,778 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2020-08-21 19:54:23,778 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 19:54:23,779 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2020-08-21 19:54:23,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-08-21 19:54:23,779 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:54:23,780 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:54:23,780 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 19:54:23,781 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:54:23,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:54:23,781 INFO L82 PathProgramCache]: Analyzing trace with hash 309875524, now seen corresponding path program 1 times [2020-08-21 19:54:23,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:54:23,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1841715389] [2020-08-21 19:54:23,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:54:23,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:54:24,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:54:24,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:54:24,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:54:24,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1841715389] [2020-08-21 19:54:24,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:54:24,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 19:54:24,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091903021] [2020-08-21 19:54:24,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 19:54:24,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:54:24,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 19:54:24,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-08-21 19:54:24,262 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand 7 states. [2020-08-21 19:54:28,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:54:28,649 INFO L93 Difference]: Finished difference Result 28 states and 36 transitions. [2020-08-21 19:54:28,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 19:54:28,650 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-08-21 19:54:28,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:54:28,652 INFO L225 Difference]: With dead ends: 28 [2020-08-21 19:54:28,652 INFO L226 Difference]: Without dead ends: 23 [2020-08-21 19:54:28,653 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-21 19:54:28,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-08-21 19:54:28,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 19. [2020-08-21 19:54:28,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-08-21 19:54:28,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2020-08-21 19:54:28,667 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 12 [2020-08-21 19:54:28,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:54:28,667 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2020-08-21 19:54:28,668 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 19:54:28,668 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2020-08-21 19:54:28,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-21 19:54:28,669 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:54:28,670 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:54:28,670 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 19:54:28,670 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:54:28,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:54:28,672 INFO L82 PathProgramCache]: Analyzing trace with hash -1451693947, now seen corresponding path program 1 times [2020-08-21 19:54:28,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:54:28,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [297855352] [2020-08-21 19:54:28,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:54:28,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:54:29,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:54:29,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:54:29,310 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:54:29,310 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [297855352] [2020-08-21 19:54:29,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 19:54:29,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 19:54:29,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761490050] [2020-08-21 19:54:29,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 19:54:29,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:54:29,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 19:54:29,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-08-21 19:54:29,313 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand 13 states. [2020-08-21 19:54:33,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:54:33,903 INFO L93 Difference]: Finished difference Result 40 states and 54 transitions. [2020-08-21 19:54:33,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 19:54:33,904 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 15 [2020-08-21 19:54:33,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:54:33,905 INFO L225 Difference]: With dead ends: 40 [2020-08-21 19:54:33,905 INFO L226 Difference]: Without dead ends: 26 [2020-08-21 19:54:33,906 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2020-08-21 19:54:33,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-08-21 19:54:33,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 22. [2020-08-21 19:54:33,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-08-21 19:54:33,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2020-08-21 19:54:33,912 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 15 [2020-08-21 19:54:33,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:54:33,913 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2020-08-21 19:54:33,913 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 19:54:33,913 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2020-08-21 19:54:33,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-21 19:54:33,914 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:54:33,914 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:54:33,914 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 19:54:33,914 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:54:33,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:54:33,915 INFO L82 PathProgramCache]: Analyzing trace with hash -162414684, now seen corresponding path program 2 times [2020-08-21 19:54:33,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:54:33,915 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1673833956] [2020-08-21 19:54:33,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:54:33,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:54:34,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:54:34,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:54:34,250 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:54:34,250 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1673833956] [2020-08-21 19:54:34,251 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 19:54:34,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-21 19:54:34,251 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845507131] [2020-08-21 19:54:34,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 19:54:34,252 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:54:34,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 19:54:34,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-08-21 19:54:34,253 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 8 states. [2020-08-21 19:54:34,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:54:34,532 INFO L93 Difference]: Finished difference Result 38 states and 50 transitions. [2020-08-21 19:54:34,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 19:54:34,533 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2020-08-21 19:54:34,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:54:34,534 INFO L225 Difference]: With dead ends: 38 [2020-08-21 19:54:34,535 INFO L226 Difference]: Without dead ends: 27 [2020-08-21 19:54:34,535 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-08-21 19:54:34,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-08-21 19:54:34,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2020-08-21 19:54:34,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-08-21 19:54:34,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2020-08-21 19:54:34,542 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 18 [2020-08-21 19:54:34,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:54:34,542 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2020-08-21 19:54:34,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 19:54:34,542 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2020-08-21 19:54:34,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-21 19:54:34,543 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:54:34,543 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:54:34,544 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 19:54:34,544 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:54:34,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:54:34,544 INFO L82 PathProgramCache]: Analyzing trace with hash -444322542, now seen corresponding path program 1 times [2020-08-21 19:54:34,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:54:34,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [146191487] [2020-08-21 19:54:34,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:54:34,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:54:34,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:54:34,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:54:34,686 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:54:34,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [146191487] [2020-08-21 19:54:34,688 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 19:54:34,688 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-08-21 19:54:34,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116702441] [2020-08-21 19:54:34,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 19:54:34,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:54:34,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 19:54:34,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 19:54:34,690 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 5 states. [2020-08-21 19:54:34,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:54:34,799 INFO L93 Difference]: Finished difference Result 38 states and 49 transitions. [2020-08-21 19:54:34,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 19:54:34,800 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-08-21 19:54:34,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:54:34,801 INFO L225 Difference]: With dead ends: 38 [2020-08-21 19:54:34,801 INFO L226 Difference]: Without dead ends: 27 [2020-08-21 19:54:34,802 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-08-21 19:54:34,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-08-21 19:54:34,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2020-08-21 19:54:34,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-08-21 19:54:34,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2020-08-21 19:54:34,814 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 19 [2020-08-21 19:54:34,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:54:34,814 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2020-08-21 19:54:34,815 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 19:54:34,815 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2020-08-21 19:54:34,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-21 19:54:34,816 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:54:34,816 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:54:34,816 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 19:54:34,816 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:54:34,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:54:34,817 INFO L82 PathProgramCache]: Analyzing trace with hash -450980439, now seen corresponding path program 1 times [2020-08-21 19:54:34,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:54:34,817 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1416678932] [2020-08-21 19:54:34,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:54:34,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:54:35,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:54:35,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:54:35,178 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:54:35,178 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1416678932] [2020-08-21 19:54:35,179 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 19:54:35,179 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-21 19:54:35,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48544757] [2020-08-21 19:54:35,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 19:54:35,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:54:35,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 19:54:35,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-21 19:54:35,181 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 8 states. [2020-08-21 19:54:35,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:54:35,358 INFO L93 Difference]: Finished difference Result 37 states and 46 transitions. [2020-08-21 19:54:35,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 19:54:35,359 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-08-21 19:54:35,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:54:35,359 INFO L225 Difference]: With dead ends: 37 [2020-08-21 19:54:35,360 INFO L226 Difference]: Without dead ends: 26 [2020-08-21 19:54:35,360 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-08-21 19:54:35,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-08-21 19:54:35,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2020-08-21 19:54:35,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-08-21 19:54:35,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2020-08-21 19:54:35,365 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 20 [2020-08-21 19:54:35,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:54:35,366 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2020-08-21 19:54:35,366 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 19:54:35,366 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2020-08-21 19:54:35,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-21 19:54:35,367 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:54:35,367 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:54:35,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 19:54:35,367 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:54:35,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:54:35,368 INFO L82 PathProgramCache]: Analyzing trace with hash -514824137, now seen corresponding path program 1 times [2020-08-21 19:54:35,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:54:35,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1266530230] [2020-08-21 19:54:35,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:54:35,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:54:35,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:54:35,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:54:35,484 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:54:35,485 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1266530230] [2020-08-21 19:54:35,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 19:54:35,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-08-21 19:54:35,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213460937] [2020-08-21 19:54:35,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 19:54:35,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:54:35,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 19:54:35,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 19:54:35,487 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand 5 states. [2020-08-21 19:54:35,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:54:35,570 INFO L93 Difference]: Finished difference Result 38 states and 47 transitions. [2020-08-21 19:54:35,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 19:54:35,572 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-08-21 19:54:35,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:54:35,573 INFO L225 Difference]: With dead ends: 38 [2020-08-21 19:54:35,573 INFO L226 Difference]: Without dead ends: 27 [2020-08-21 19:54:35,574 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-08-21 19:54:35,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-08-21 19:54:35,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2020-08-21 19:54:35,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-08-21 19:54:35,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2020-08-21 19:54:35,581 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 21 [2020-08-21 19:54:35,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:54:35,582 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2020-08-21 19:54:35,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 19:54:35,582 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2020-08-21 19:54:35,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-21 19:54:35,583 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:54:35,583 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:54:35,583 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 19:54:35,583 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:54:35,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:54:35,584 INFO L82 PathProgramCache]: Analyzing trace with hash 1260183225, now seen corresponding path program 1 times [2020-08-21 19:54:35,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:54:35,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1283454041] [2020-08-21 19:54:35,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:54:35,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:54:36,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:54:36,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:54:36,279 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:54:36,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1283454041] [2020-08-21 19:54:36,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 19:54:36,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-21 19:54:36,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545848063] [2020-08-21 19:54:36,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-21 19:54:36,282 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:54:36,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-21 19:54:36,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-21 19:54:36,283 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 15 states. [2020-08-21 19:54:39,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:54:39,187 INFO L93 Difference]: Finished difference Result 37 states and 45 transitions. [2020-08-21 19:54:39,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-21 19:54:39,188 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 21 [2020-08-21 19:54:39,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:54:39,189 INFO L225 Difference]: With dead ends: 37 [2020-08-21 19:54:39,189 INFO L226 Difference]: Without dead ends: 32 [2020-08-21 19:54:39,190 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=128, Invalid=472, Unknown=0, NotChecked=0, Total=600 [2020-08-21 19:54:39,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-08-21 19:54:39,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2020-08-21 19:54:39,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-08-21 19:54:39,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-08-21 19:54:39,202 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 21 [2020-08-21 19:54:39,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:54:39,202 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-08-21 19:54:39,202 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-21 19:54:39,203 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-08-21 19:54:39,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-21 19:54:39,203 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:54:39,203 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:54:39,204 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 19:54:39,205 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:54:39,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:54:39,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1035578608, now seen corresponding path program 2 times [2020-08-21 19:54:39,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:54:39,206 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [719535918] [2020-08-21 19:54:39,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:54:39,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:54:39,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:54:39,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:54:39,367 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:54:39,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [719535918] [2020-08-21 19:54:39,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 19:54:39,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-21 19:54:39,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286053622] [2020-08-21 19:54:39,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 19:54:39,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:54:39,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 19:54:39,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 19:54:39,372 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 6 states. [2020-08-21 19:54:43,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:54:43,653 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2020-08-21 19:54:43,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 19:54:43,654 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-08-21 19:54:43,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:54:43,655 INFO L225 Difference]: With dead ends: 41 [2020-08-21 19:54:43,655 INFO L226 Difference]: Without dead ends: 30 [2020-08-21 19:54:43,656 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-08-21 19:54:43,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-08-21 19:54:43,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-08-21 19:54:43,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-08-21 19:54:43,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-08-21 19:54:43,662 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 24 [2020-08-21 19:54:43,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:54:43,662 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-08-21 19:54:43,662 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 19:54:43,662 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-08-21 19:54:43,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-21 19:54:43,663 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:54:43,663 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:54:43,664 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 19:54:43,664 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:54:43,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:54:43,664 INFO L82 PathProgramCache]: Analyzing trace with hash -1961236154, now seen corresponding path program 1 times [2020-08-21 19:54:43,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:54:43,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1939216484] [2020-08-21 19:54:43,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:54:43,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:54:43,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:54:43,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:54:43,791 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:54:43,791 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1939216484] [2020-08-21 19:54:43,791 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 19:54:43,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-21 19:54:43,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119133760] [2020-08-21 19:54:43,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 19:54:43,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:54:43,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 19:54:43,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-21 19:54:43,795 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 6 states. [2020-08-21 19:54:43,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:54:43,926 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2020-08-21 19:54:43,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 19:54:43,927 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-08-21 19:54:43,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:54:43,928 INFO L225 Difference]: With dead ends: 44 [2020-08-21 19:54:43,928 INFO L226 Difference]: Without dead ends: 33 [2020-08-21 19:54:43,928 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-08-21 19:54:43,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-08-21 19:54:43,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2020-08-21 19:54:43,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-08-21 19:54:43,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-08-21 19:54:43,937 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 25 [2020-08-21 19:54:43,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:54:43,937 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-08-21 19:54:43,938 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 19:54:43,938 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-08-21 19:54:43,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-21 19:54:43,940 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:54:43,940 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:54:43,940 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 19:54:43,941 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:54:43,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:54:43,942 INFO L82 PathProgramCache]: Analyzing trace with hash -230662155, now seen corresponding path program 1 times [2020-08-21 19:54:43,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:54:43,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [641563404] [2020-08-21 19:54:43,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:54:44,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:54:45,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:54:45,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:54:45,852 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:54:45,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [641563404] [2020-08-21 19:54:45,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 19:54:45,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-21 19:54:45,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925189804] [2020-08-21 19:54:45,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 19:54:45,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:54:45,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 19:54:45,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 19:54:45,854 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 6 states. [2020-08-21 19:54:52,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:54:52,895 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2020-08-21 19:54:52,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 19:54:52,896 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-08-21 19:54:52,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:54:52,896 INFO L225 Difference]: With dead ends: 43 [2020-08-21 19:54:52,896 INFO L226 Difference]: Without dead ends: 32 [2020-08-21 19:54:52,897 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-08-21 19:54:52,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-08-21 19:54:52,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-08-21 19:54:52,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-08-21 19:54:52,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-08-21 19:54:52,907 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 26 [2020-08-21 19:54:52,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:54:52,907 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-08-21 19:54:52,907 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 19:54:52,907 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-08-21 19:54:52,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-21 19:54:52,909 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:54:52,909 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:54:52,909 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 19:54:52,910 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:54:52,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:54:52,910 INFO L82 PathProgramCache]: Analyzing trace with hash 2020075371, now seen corresponding path program 1 times [2020-08-21 19:54:52,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:54:52,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [114390057] [2020-08-21 19:54:52,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:54:52,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:54:53,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:54:53,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:54:53,086 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-21 19:54:53,087 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [114390057] [2020-08-21 19:54:53,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:54:53,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 19:54:53,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642843861] [2020-08-21 19:54:53,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 19:54:53,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:54:53,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 19:54:53,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-21 19:54:53,089 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 7 states. [2020-08-21 19:54:53,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:54:53,194 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2020-08-21 19:54:53,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 19:54:53,195 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-08-21 19:54:53,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:54:53,195 INFO L225 Difference]: With dead ends: 31 [2020-08-21 19:54:53,195 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 19:54:53,196 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-08-21 19:54:53,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 19:54:53,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 19:54:53,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 19:54:53,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 19:54:53,197 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2020-08-21 19:54:53,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:54:53,198 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 19:54:53,198 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 19:54:53,198 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 19:54:53,198 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 19:54:53,198 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 19:54:53,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-21 19:54:53,350 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-08-21 19:54:53,350 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (= ~SIZE~0 |old(~SIZE~0)|) [2020-08-21 19:54:53,350 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-21 19:54:53,350 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-21 19:54:53,351 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= 20000001 ~SIZE~0) (<= ~SIZE~0 20000001)) [2020-08-21 19:54:53,351 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-21 19:54:53,351 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-21 19:54:53,351 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-08-21 19:54:53,351 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-08-21 19:54:53,351 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-08-21 19:54:53,351 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-08-21 19:54:53,351 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-08-21 19:54:53,352 INFO L268 CegarLoopResult]: For program point L27(lines 27 30) no Hoare annotation was computed. [2020-08-21 19:54:53,352 INFO L268 CegarLoopResult]: For program point L25(lines 25 30) no Hoare annotation was computed. [2020-08-21 19:54:53,352 INFO L268 CegarLoopResult]: For program point L27-2(lines 21 30) no Hoare annotation was computed. [2020-08-21 19:54:53,352 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 14 35) no Hoare annotation was computed. [2020-08-21 19:54:53,352 INFO L268 CegarLoopResult]: For program point L23(lines 23 30) no Hoare annotation was computed. [2020-08-21 19:54:53,353 INFO L268 CegarLoopResult]: For program point L21(lines 21 30) no Hoare annotation was computed. [2020-08-21 19:54:53,353 INFO L264 CegarLoopResult]: At program point L19-2(lines 19 32) the Hoare annotation is: (or (let ((.cse0 (+ main_~i~0 main_~j~0 main_~k~0 main_~v3~0 main_~v4~0))) (and (<= main_~l~0 .cse0) (<= .cse0 main_~l~0))) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2020-08-21 19:54:53,353 INFO L264 CegarLoopResult]: At program point L19-3(lines 19 32) the Hoare annotation is: (or (let ((.cse1 (+ main_~i~0 main_~j~0 main_~k~0 main_~v3~0 main_~v4~0 (* 4294967296 (div main_~l~0 4294967296)))) (.cse0 (* 4294967296 (div (+ main_~i~0 main_~j~0 main_~k~0 main_~v3~0 main_~v4~0) 4294967296)))) (and (<= (+ main_~l~0 .cse0) .cse1) (< .cse1 (+ main_~l~0 .cse0 1)))) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2020-08-21 19:54:53,353 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 14 35) no Hoare annotation was computed. [2020-08-21 19:54:53,353 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 14 35) the Hoare annotation is: true [2020-08-21 19:54:53,354 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-08-21 19:54:53,354 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-08-21 19:54:53,354 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-08-21 19:54:53,354 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-08-21 19:54:53,354 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-08-21 19:54:53,354 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-08-21 19:54:53,354 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-08-21 19:54:53,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 07:54:53 BoogieIcfgContainer [2020-08-21 19:54:53,374 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 19:54:53,377 INFO L168 Benchmark]: Toolchain (without parser) took 30775.76 ms. Allocated memory was 142.1 MB in the beginning and 266.3 MB in the end (delta: 124.3 MB). Free memory was 105.2 MB in the beginning and 162.0 MB in the end (delta: -56.8 MB). Peak memory consumption was 67.5 MB. Max. memory is 7.1 GB. [2020-08-21 19:54:53,378 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 142.1 MB. Free memory was 123.6 MB in the beginning and 123.2 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-08-21 19:54:53,379 INFO L168 Benchmark]: CACSL2BoogieTranslator took 269.02 ms. Allocated memory is still 142.1 MB. Free memory was 105.2 MB in the beginning and 95.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-08-21 19:54:53,380 INFO L168 Benchmark]: Boogie Preprocessor took 145.88 ms. Allocated memory was 142.1 MB in the beginning and 207.1 MB in the end (delta: 65.0 MB). Free memory was 95.2 MB in the beginning and 185.6 MB in the end (delta: -90.4 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. [2020-08-21 19:54:53,381 INFO L168 Benchmark]: RCFGBuilder took 308.79 ms. Allocated memory is still 207.1 MB. Free memory was 185.6 MB in the beginning and 170.7 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. [2020-08-21 19:54:53,381 INFO L168 Benchmark]: TraceAbstraction took 30047.53 ms. Allocated memory was 207.1 MB in the beginning and 266.3 MB in the end (delta: 59.2 MB). Free memory was 170.7 MB in the beginning and 162.0 MB in the end (delta: 8.7 MB). Peak memory consumption was 68.0 MB. Max. memory is 7.1 GB. [2020-08-21 19:54:53,385 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 142.1 MB. Free memory was 123.6 MB in the beginning and 123.2 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 269.02 ms. Allocated memory is still 142.1 MB. Free memory was 105.2 MB in the beginning and 95.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 145.88 ms. Allocated memory was 142.1 MB in the beginning and 207.1 MB in the end (delta: 65.0 MB). Free memory was 95.2 MB in the beginning and 185.6 MB in the end (delta: -90.4 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 308.79 ms. Allocated memory is still 207.1 MB. Free memory was 185.6 MB in the beginning and 170.7 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 30047.53 ms. Allocated memory was 207.1 MB in the beginning and 266.3 MB in the end (delta: 59.2 MB). Free memory was 170.7 MB in the beginning and 162.0 MB in the end (delta: 8.7 MB). Peak memory consumption was 68.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: ((l <= i + j + k + v3 + v4 && i + j + k + v3 + v4 <= l) || !(SIZE <= 20000001)) || !(20000001 <= SIZE) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 29.8s, OverallIterations: 12, TraceHistogramMax: 3, AutomataDifference: 24.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 148 SDtfs, 508 SDslu, 243 SDs, 0 SdLazy, 774 SolverSat, 129 SolverUnsat, 10 SolverUnknown, 0 SolverNotchecked, 21.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 153 GetRequests, 32 SyntacticMatches, 12 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 5.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=11, 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, 12 MinimizatonAttempts, 26 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 19 PreInvPairs, 27 NumberOfFragments, 98 HoareAnnotationTreeSize, 19 FomulaSimplifications, 530 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 248 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.7s InterpolantComputationTime, 240 NumberOfCodeBlocks, 240 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 228 ConstructedInterpolants, 0 QuantifiedInterpolants, 52122 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 3 PerfectInterpolantSequences, 42/80 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...