/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/sumt5.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 00:29:13,745 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 00:29:13,748 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 00:29:13,793 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 00:29:13,793 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 00:29:13,805 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 00:29:13,806 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 00:29:13,809 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 00:29:13,811 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 00:29:13,812 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 00:29:13,814 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 00:29:13,815 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 00:29:13,815 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 00:29:13,818 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 00:29:13,820 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 00:29:13,821 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 00:29:13,823 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 00:29:13,825 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 00:29:13,827 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 00:29:13,832 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 00:29:13,834 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 00:29:13,836 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 00:29:13,837 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 00:29:13,838 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 00:29:13,843 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-19 00:29:13,854 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 00:29:13,855 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 00:29:13,856 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 00:29:13,857 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 [2020-08-19 00:29:13,899 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 00:29:13,899 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 00:29:13,902 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 00:29:13,902 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 00:29:13,903 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 00:29:13,903 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 00:29:13,903 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 00:29:13,903 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 00:29:13,904 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 00:29:13,904 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 00:29:13,905 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 00:29:13,905 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 00:29:13,905 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 00:29:13,906 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 00:29:13,906 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 00:29:13,906 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 00:29:13,906 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 00:29:13,906 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 00:29:13,907 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 00:29:13,907 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 00:29:13,907 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 00:29:13,907 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 00:29:13,907 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 00:29:13,908 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 00:29:13,908 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 00:29:13,908 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 00:29:13,908 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 00:29:13,908 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 00:29:13,908 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 00:29:13,909 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; [2020-08-19 00:29:14,210 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 00:29:14,227 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 00:29:14,233 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 00:29:14,235 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 00:29:14,236 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 00:29:14,237 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/sumt5.c [2020-08-19 00:29:14,298 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c6b01987a/7e3a6bdb67034ab88c2b5b28786e8e18/FLAG858838c94 [2020-08-19 00:29:14,740 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 00:29:14,740 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops-crafted-1/sumt5.c [2020-08-19 00:29:14,746 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c6b01987a/7e3a6bdb67034ab88c2b5b28786e8e18/FLAG858838c94 [2020-08-19 00:29:15,198 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c6b01987a/7e3a6bdb67034ab88c2b5b28786e8e18 [2020-08-19 00:29:15,208 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 00:29:15,210 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 00:29:15,211 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 00:29:15,211 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 00:29:15,215 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 00:29:15,215 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:29:15" (1/1) ... [2020-08-19 00:29:15,217 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ddf63cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:29:15, skipping insertion in model container [2020-08-19 00:29:15,218 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:29:15" (1/1) ... [2020-08-19 00:29:15,225 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 00:29:15,241 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 00:29:15,410 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:29:15,414 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 00:29:15,433 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:29:15,446 INFO L208 MainTranslator]: Completed translation [2020-08-19 00:29:15,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:29:15 WrapperNode [2020-08-19 00:29:15,447 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 00:29:15,447 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 00:29:15,448 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 00:29:15,448 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 00:29:15,458 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:29:15" (1/1) ... [2020-08-19 00:29:15,459 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:29:15" (1/1) ... [2020-08-19 00:29:15,552 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:29:15" (1/1) ... [2020-08-19 00:29:15,553 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:29:15" (1/1) ... [2020-08-19 00:29:15,558 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:29:15" (1/1) ... [2020-08-19 00:29:15,567 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:29:15" (1/1) ... [2020-08-19 00:29:15,569 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:29:15" (1/1) ... [2020-08-19 00:29:15,570 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 00:29:15,571 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 00:29:15,571 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 00:29:15,571 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 00:29:15,572 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:29:15" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 00:29:15,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 00:29:15,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 00:29:15,636 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-19 00:29:15,636 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-19 00:29:15,636 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 00:29:15,636 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 00:29:15,636 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-19 00:29:15,636 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-19 00:29:15,637 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-19 00:29:15,637 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 00:29:15,637 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 00:29:15,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 00:29:15,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 00:29:15,866 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 00:29:15,866 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-19 00:29:15,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:29:15 BoogieIcfgContainer [2020-08-19 00:29:15,870 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 00:29:15,871 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 00:29:15,871 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 00:29:15,874 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 00:29:15,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 12:29:15" (1/3) ... [2020-08-19 00:29:15,875 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e6bf326 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:29:15, skipping insertion in model container [2020-08-19 00:29:15,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:29:15" (2/3) ... [2020-08-19 00:29:15,876 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e6bf326 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:29:15, skipping insertion in model container [2020-08-19 00:29:15,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:29:15" (3/3) ... [2020-08-19 00:29:15,878 INFO L109 eAbstractionObserver]: Analyzing ICFG sumt5.c [2020-08-19 00:29:15,889 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 00:29:15,897 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 00:29:15,914 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 00:29:15,952 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 00:29:15,952 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 00:29:15,952 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 00:29:15,952 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 00:29:15,953 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 00:29:15,953 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 00:29:15,953 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 00:29:15,953 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 00:29:15,978 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-08-19 00:29:15,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-08-19 00:29:15,985 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:29:15,986 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:29:15,986 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:29:15,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:29:15,992 INFO L82 PathProgramCache]: Analyzing trace with hash 333887070, now seen corresponding path program 1 times [2020-08-19 00:29:16,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:29:16,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1201858401] [2020-08-19 00:29:16,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:29:16,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:29:16,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:29:16,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:29:16,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:29:16,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1201858401] [2020-08-19 00:29:16,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:29:16,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 00:29:16,166 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123955568] [2020-08-19 00:29:16,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 00:29:16,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:29:16,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 00:29:16,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 00:29:16,190 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 3 states. [2020-08-19 00:29:16,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:29:16,250 INFO L93 Difference]: Finished difference Result 37 states and 45 transitions. [2020-08-19 00:29:16,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 00:29:16,253 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-08-19 00:29:16,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:29:16,263 INFO L225 Difference]: With dead ends: 37 [2020-08-19 00:29:16,263 INFO L226 Difference]: Without dead ends: 18 [2020-08-19 00:29:16,266 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 [2020-08-19 00:29:16,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-08-19 00:29:16,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-08-19 00:29:16,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-08-19 00:29:16,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2020-08-19 00:29:16,307 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 12 [2020-08-19 00:29:16,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:29:16,308 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2020-08-19 00:29:16,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 00:29:16,308 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2020-08-19 00:29:16,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-08-19 00:29:16,309 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:29:16,309 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:29:16,310 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 00:29:16,310 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:29:16,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:29:16,311 INFO L82 PathProgramCache]: Analyzing trace with hash 309875524, now seen corresponding path program 1 times [2020-08-19 00:29:16,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:29:16,312 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [27030709] [2020-08-19 00:29:16,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:29:16,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:29:16,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:29:16,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:29:16,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:29:16,689 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [27030709] [2020-08-19 00:29:16,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:29:16,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 00:29:16,690 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676265597] [2020-08-19 00:29:16,691 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 00:29:16,692 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:29:16,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 00:29:16,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-08-19 00:29:16,693 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand 7 states. [2020-08-19 00:29:21,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:29:21,053 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2020-08-19 00:29:21,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 00:29:21,055 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-08-19 00:29:21,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:29:21,056 INFO L225 Difference]: With dead ends: 26 [2020-08-19 00:29:21,056 INFO L226 Difference]: Without dead ends: 21 [2020-08-19 00:29:21,058 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-19 00:29:21,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-08-19 00:29:21,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2020-08-19 00:29:21,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-08-19 00:29:21,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2020-08-19 00:29:21,071 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 12 [2020-08-19 00:29:21,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:29:21,071 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2020-08-19 00:29:21,072 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 00:29:21,072 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2020-08-19 00:29:21,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-19 00:29:21,073 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:29:21,074 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:29:21,074 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 00:29:21,074 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:29:21,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:29:21,076 INFO L82 PathProgramCache]: Analyzing trace with hash -1451693947, now seen corresponding path program 1 times [2020-08-19 00:29:21,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:29:21,077 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1099124555] [2020-08-19 00:29:21,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:29:21,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:29:21,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:29:21,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:29:21,825 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:29:21,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1099124555] [2020-08-19 00:29:21,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:29:21,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-19 00:29:21,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130649905] [2020-08-19 00:29:21,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 00:29:21,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:29:21,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 00:29:21,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-08-19 00:29:21,828 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand 13 states. [2020-08-19 00:29:28,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:29:28,526 INFO L93 Difference]: Finished difference Result 40 states and 54 transitions. [2020-08-19 00:29:28,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 00:29:28,528 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 15 [2020-08-19 00:29:28,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:29:28,529 INFO L225 Difference]: With dead ends: 40 [2020-08-19 00:29:28,529 INFO L226 Difference]: Without dead ends: 26 [2020-08-19 00:29:28,530 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2020-08-19 00:29:28,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-08-19 00:29:28,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 22. [2020-08-19 00:29:28,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-08-19 00:29:28,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2020-08-19 00:29:28,536 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 15 [2020-08-19 00:29:28,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:29:28,536 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2020-08-19 00:29:28,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 00:29:28,537 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2020-08-19 00:29:28,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-19 00:29:28,537 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:29:28,538 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:29:28,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 00:29:28,538 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:29:28,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:29:28,538 INFO L82 PathProgramCache]: Analyzing trace with hash -162414684, now seen corresponding path program 2 times [2020-08-19 00:29:28,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:29:28,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1770011064] [2020-08-19 00:29:28,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:29:28,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:29:28,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:29:28,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:29:28,857 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:29:28,858 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1770011064] [2020-08-19 00:29:28,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:29:28,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-19 00:29:28,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624589102] [2020-08-19 00:29:28,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 00:29:28,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:29:28,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 00:29:28,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-08-19 00:29:28,861 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 8 states. [2020-08-19 00:29:29,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:29:29,146 INFO L93 Difference]: Finished difference Result 38 states and 50 transitions. [2020-08-19 00:29:29,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 00:29:29,146 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2020-08-19 00:29:29,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:29:29,147 INFO L225 Difference]: With dead ends: 38 [2020-08-19 00:29:29,147 INFO L226 Difference]: Without dead ends: 27 [2020-08-19 00:29:29,148 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 [2020-08-19 00:29:29,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-08-19 00:29:29,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2020-08-19 00:29:29,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-08-19 00:29:29,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2020-08-19 00:29:29,155 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 18 [2020-08-19 00:29:29,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:29:29,155 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2020-08-19 00:29:29,155 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 00:29:29,155 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2020-08-19 00:29:29,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-19 00:29:29,156 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:29:29,156 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:29:29,157 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 00:29:29,157 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:29:29,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:29:29,157 INFO L82 PathProgramCache]: Analyzing trace with hash -444322542, now seen corresponding path program 1 times [2020-08-19 00:29:29,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:29:29,158 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [754945384] [2020-08-19 00:29:29,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:29:29,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:29:29,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:29:29,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:29:29,260 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:29:29,261 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [754945384] [2020-08-19 00:29:29,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:29:29,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-08-19 00:29:29,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344621334] [2020-08-19 00:29:29,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 00:29:29,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:29:29,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 00:29:29,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 00:29:29,263 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 5 states. [2020-08-19 00:29:29,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:29:29,359 INFO L93 Difference]: Finished difference Result 38 states and 49 transitions. [2020-08-19 00:29:29,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 00:29:29,360 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-08-19 00:29:29,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:29:29,361 INFO L225 Difference]: With dead ends: 38 [2020-08-19 00:29:29,361 INFO L226 Difference]: Without dead ends: 27 [2020-08-19 00:29:29,362 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 [2020-08-19 00:29:29,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-08-19 00:29:29,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2020-08-19 00:29:29,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-08-19 00:29:29,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2020-08-19 00:29:29,367 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 19 [2020-08-19 00:29:29,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:29:29,368 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2020-08-19 00:29:29,368 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 00:29:29,368 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2020-08-19 00:29:29,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-19 00:29:29,369 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:29:29,369 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:29:29,369 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 00:29:29,370 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:29:29,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:29:29,370 INFO L82 PathProgramCache]: Analyzing trace with hash -450980439, now seen corresponding path program 1 times [2020-08-19 00:29:29,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:29:29,370 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [858244405] [2020-08-19 00:29:29,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:29:29,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:29:29,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:29:29,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:29:29,693 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:29:29,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [858244405] [2020-08-19 00:29:29,694 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:29:29,694 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-19 00:29:29,694 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253654410] [2020-08-19 00:29:29,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 00:29:29,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:29:29,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 00:29:29,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-19 00:29:29,695 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 8 states. [2020-08-19 00:29:34,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:29:34,042 INFO L93 Difference]: Finished difference Result 37 states and 46 transitions. [2020-08-19 00:29:34,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 00:29:34,043 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-08-19 00:29:34,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:29:34,044 INFO L225 Difference]: With dead ends: 37 [2020-08-19 00:29:34,044 INFO L226 Difference]: Without dead ends: 26 [2020-08-19 00:29:34,045 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 [2020-08-19 00:29:34,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-08-19 00:29:34,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2020-08-19 00:29:34,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-08-19 00:29:34,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2020-08-19 00:29:34,051 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 20 [2020-08-19 00:29:34,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:29:34,052 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2020-08-19 00:29:34,052 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 00:29:34,052 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2020-08-19 00:29:34,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-19 00:29:34,053 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:29:34,053 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:29:34,053 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 00:29:34,053 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:29:34,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:29:34,054 INFO L82 PathProgramCache]: Analyzing trace with hash -514824137, now seen corresponding path program 1 times [2020-08-19 00:29:34,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:29:34,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1753814897] [2020-08-19 00:29:34,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:29:34,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:29:34,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:29:34,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:29:34,161 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:29:34,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1753814897] [2020-08-19 00:29:34,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:29:34,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-08-19 00:29:34,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308002271] [2020-08-19 00:29:34,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 00:29:34,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:29:34,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 00:29:34,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 00:29:34,163 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand 5 states. [2020-08-19 00:29:34,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:29:34,246 INFO L93 Difference]: Finished difference Result 38 states and 47 transitions. [2020-08-19 00:29:34,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 00:29:34,247 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-08-19 00:29:34,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:29:34,248 INFO L225 Difference]: With dead ends: 38 [2020-08-19 00:29:34,248 INFO L226 Difference]: Without dead ends: 27 [2020-08-19 00:29:34,249 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 [2020-08-19 00:29:34,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-08-19 00:29:34,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2020-08-19 00:29:34,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-08-19 00:29:34,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2020-08-19 00:29:34,254 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 21 [2020-08-19 00:29:34,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:29:34,254 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2020-08-19 00:29:34,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 00:29:34,255 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2020-08-19 00:29:34,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-19 00:29:34,255 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:29:34,256 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:29:34,256 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 00:29:34,256 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:29:34,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:29:34,256 INFO L82 PathProgramCache]: Analyzing trace with hash 1260183225, now seen corresponding path program 1 times [2020-08-19 00:29:34,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:29:34,257 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1881244993] [2020-08-19 00:29:34,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:29:34,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:29:34,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:29:34,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:29:34,885 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:29:34,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1881244993] [2020-08-19 00:29:34,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:29:34,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-19 00:29:34,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749992181] [2020-08-19 00:29:34,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-19 00:29:34,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:29:34,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-19 00:29:34,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-19 00:29:34,888 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 15 states. [2020-08-19 00:29:37,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:29:37,625 INFO L93 Difference]: Finished difference Result 37 states and 45 transitions. [2020-08-19 00:29:37,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-19 00:29:37,626 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 21 [2020-08-19 00:29:37,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:29:37,626 INFO L225 Difference]: With dead ends: 37 [2020-08-19 00:29:37,626 INFO L226 Difference]: Without dead ends: 32 [2020-08-19 00:29:37,628 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=128, Invalid=472, Unknown=0, NotChecked=0, Total=600 [2020-08-19 00:29:37,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-08-19 00:29:37,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2020-08-19 00:29:37,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-08-19 00:29:37,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-08-19 00:29:37,635 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 21 [2020-08-19 00:29:37,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:29:37,636 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-08-19 00:29:37,636 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-19 00:29:37,636 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-08-19 00:29:37,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-19 00:29:37,637 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:29:37,637 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:29:37,637 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 00:29:37,637 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:29:37,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:29:37,638 INFO L82 PathProgramCache]: Analyzing trace with hash 1035578608, now seen corresponding path program 2 times [2020-08-19 00:29:37,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:29:37,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2003397436] [2020-08-19 00:29:37,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:29:37,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:29:37,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:29:37,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:29:37,766 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:29:37,767 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2003397436] [2020-08-19 00:29:37,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:29:37,767 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-19 00:29:37,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312384721] [2020-08-19 00:29:37,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 00:29:37,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:29:37,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 00:29:37,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-19 00:29:37,769 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 6 states. [2020-08-19 00:29:39,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:29:39,991 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2020-08-19 00:29:39,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 00:29:39,991 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-08-19 00:29:39,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:29:39,993 INFO L225 Difference]: With dead ends: 41 [2020-08-19 00:29:39,993 INFO L226 Difference]: Without dead ends: 30 [2020-08-19 00:29:39,994 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 [2020-08-19 00:29:39,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-08-19 00:29:39,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-08-19 00:29:39,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-08-19 00:29:39,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-08-19 00:29:40,000 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 24 [2020-08-19 00:29:40,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:29:40,000 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-08-19 00:29:40,000 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 00:29:40,000 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-08-19 00:29:40,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-19 00:29:40,001 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:29:40,001 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] [2020-08-19 00:29:40,002 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 00:29:40,002 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:29:40,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:29:40,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1961236154, now seen corresponding path program 1 times [2020-08-19 00:29:40,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:29:40,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [363305652] [2020-08-19 00:29:40,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:29:40,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:29:40,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:29:40,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:29:40,120 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:29:40,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [363305652] [2020-08-19 00:29:40,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:29:40,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-19 00:29:40,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914131010] [2020-08-19 00:29:40,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 00:29:40,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:29:40,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 00:29:40,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-19 00:29:40,122 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 6 states. [2020-08-19 00:29:40,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:29:40,258 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2020-08-19 00:29:40,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 00:29:40,259 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-08-19 00:29:40,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:29:40,260 INFO L225 Difference]: With dead ends: 44 [2020-08-19 00:29:40,260 INFO L226 Difference]: Without dead ends: 33 [2020-08-19 00:29:40,261 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 [2020-08-19 00:29:40,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-08-19 00:29:40,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2020-08-19 00:29:40,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-08-19 00:29:40,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-08-19 00:29:40,268 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 25 [2020-08-19 00:29:40,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:29:40,270 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-08-19 00:29:40,270 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 00:29:40,270 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-08-19 00:29:40,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-19 00:29:40,274 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:29:40,274 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] [2020-08-19 00:29:40,275 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 00:29:40,275 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:29:40,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:29:40,275 INFO L82 PathProgramCache]: Analyzing trace with hash -230662155, now seen corresponding path program 1 times [2020-08-19 00:29:40,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:29:40,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2140971766] [2020-08-19 00:29:40,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:29:40,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:29:44,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:29:44,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:29:44,628 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:29:44,628 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2140971766] [2020-08-19 00:29:44,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:29:44,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-19 00:29:44,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172274468] [2020-08-19 00:29:44,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 00:29:44,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:29:44,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 00:29:44,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=20, Unknown=1, NotChecked=0, Total=30 [2020-08-19 00:29:44,630 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 6 states. [2020-08-19 00:29:46,767 WARN L193 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 26 [2020-08-19 00:29:51,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:29:51,638 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2020-08-19 00:29:51,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 00:29:51,643 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-08-19 00:29:51,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:29:51,644 INFO L225 Difference]: With dead ends: 43 [2020-08-19 00:29:51,644 INFO L226 Difference]: Without dead ends: 32 [2020-08-19 00:29:51,645 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=23, Invalid=48, Unknown=1, NotChecked=0, Total=72 [2020-08-19 00:29:51,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-08-19 00:29:51,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-08-19 00:29:51,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-08-19 00:29:51,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-08-19 00:29:51,652 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 26 [2020-08-19 00:29:51,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:29:51,653 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-08-19 00:29:51,654 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 00:29:51,654 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-08-19 00:29:51,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-19 00:29:51,654 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:29:51,654 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] [2020-08-19 00:29:51,655 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 00:29:51,655 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:29:51,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:29:51,655 INFO L82 PathProgramCache]: Analyzing trace with hash 2020075371, now seen corresponding path program 1 times [2020-08-19 00:29:51,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:29:51,656 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [253256733] [2020-08-19 00:29:51,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:29:51,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:29:51,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:29:51,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:29:51,805 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-19 00:29:51,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [253256733] [2020-08-19 00:29:51,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:29:51,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 00:29:51,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660386317] [2020-08-19 00:29:51,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 00:29:51,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:29:51,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 00:29:51,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-19 00:29:51,808 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 7 states. [2020-08-19 00:29:51,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:29:51,935 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2020-08-19 00:29:51,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 00:29:51,935 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-08-19 00:29:51,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:29:51,936 INFO L225 Difference]: With dead ends: 31 [2020-08-19 00:29:51,936 INFO L226 Difference]: Without dead ends: 0 [2020-08-19 00:29:51,937 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-08-19 00:29:51,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-19 00:29:51,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-19 00:29:51,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-19 00:29:51,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-19 00:29:51,938 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2020-08-19 00:29:51,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:29:51,938 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-19 00:29:51,938 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 00:29:51,938 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-19 00:29:51,938 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-19 00:29:51,939 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-19 00:29:51,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-19 00:29:52,075 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-08-19 00:29:52,075 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (= ~SIZE~0 |old(~SIZE~0)|) [2020-08-19 00:29:52,075 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-19 00:29:52,076 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-19 00:29:52,076 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= 20000001 ~SIZE~0) (<= ~SIZE~0 20000001)) [2020-08-19 00:29:52,076 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-19 00:29:52,076 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-19 00:29:52,076 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-08-19 00:29:52,076 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-08-19 00:29:52,076 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-08-19 00:29:52,077 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-08-19 00:29:52,077 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-08-19 00:29:52,077 INFO L268 CegarLoopResult]: For program point L27(lines 27 30) no Hoare annotation was computed. [2020-08-19 00:29:52,077 INFO L268 CegarLoopResult]: For program point L25(lines 25 30) no Hoare annotation was computed. [2020-08-19 00:29:52,077 INFO L268 CegarLoopResult]: For program point L27-2(lines 21 30) no Hoare annotation was computed. [2020-08-19 00:29:52,077 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 14 35) no Hoare annotation was computed. [2020-08-19 00:29:52,078 INFO L268 CegarLoopResult]: For program point L23(lines 23 30) no Hoare annotation was computed. [2020-08-19 00:29:52,078 INFO L268 CegarLoopResult]: For program point L21(lines 21 30) no Hoare annotation was computed. [2020-08-19 00:29:52,078 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))) [2020-08-19 00:29:52,078 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))) [2020-08-19 00:29:52,078 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 14 35) no Hoare annotation was computed. [2020-08-19 00:29:52,078 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 14 35) the Hoare annotation is: true [2020-08-19 00:29:52,079 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-08-19 00:29:52,079 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-08-19 00:29:52,079 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-08-19 00:29:52,079 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-08-19 00:29:52,079 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-08-19 00:29:52,079 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-08-19 00:29:52,079 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-08-19 00:29:52,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 12:29:52 BoogieIcfgContainer [2020-08-19 00:29:52,098 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 00:29:52,100 INFO L168 Benchmark]: Toolchain (without parser) took 36890.21 ms. Allocated memory was 149.4 MB in the beginning and 264.8 MB in the end (delta: 115.3 MB). Free memory was 104.3 MB in the beginning and 171.0 MB in the end (delta: -66.7 MB). Peak memory consumption was 48.7 MB. Max. memory is 7.1 GB. [2020-08-19 00:29:52,101 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 149.4 MB. Free memory was 122.7 MB in the beginning and 122.3 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. [2020-08-19 00:29:52,102 INFO L168 Benchmark]: CACSL2BoogieTranslator took 236.09 ms. Allocated memory is still 149.4 MB. Free memory was 103.9 MB in the beginning and 94.1 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-08-19 00:29:52,103 INFO L168 Benchmark]: Boogie Preprocessor took 123.06 ms. Allocated memory was 149.4 MB in the beginning and 205.5 MB in the end (delta: 56.1 MB). Free memory was 94.1 MB in the beginning and 183.8 MB in the end (delta: -89.8 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-08-19 00:29:52,103 INFO L168 Benchmark]: RCFGBuilder took 299.13 ms. Allocated memory is still 205.5 MB. Free memory was 183.8 MB in the beginning and 169.2 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. [2020-08-19 00:29:52,104 INFO L168 Benchmark]: TraceAbstraction took 36227.03 ms. Allocated memory was 205.5 MB in the beginning and 264.8 MB in the end (delta: 59.2 MB). Free memory was 169.2 MB in the beginning and 171.0 MB in the end (delta: -1.8 MB). Peak memory consumption was 57.4 MB. Max. memory is 7.1 GB. [2020-08-19 00:29:52,108 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 149.4 MB. Free memory was 122.7 MB in the beginning and 122.3 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 236.09 ms. Allocated memory is still 149.4 MB. Free memory was 103.9 MB in the beginning and 94.1 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 123.06 ms. Allocated memory was 149.4 MB in the beginning and 205.5 MB in the end (delta: 56.1 MB). Free memory was 94.1 MB in the beginning and 183.8 MB in the end (delta: -89.8 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 299.13 ms. Allocated memory is still 205.5 MB. Free memory was 183.8 MB in the beginning and 169.2 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 36227.03 ms. Allocated memory was 205.5 MB in the beginning and 264.8 MB in the end (delta: 59.2 MB). Free memory was 169.2 MB in the beginning and 171.0 MB in the end (delta: -1.8 MB). Peak memory consumption was 57.4 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: 35.9s, OverallIterations: 12, TraceHistogramMax: 3, AutomataDifference: 28.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 152 SDtfs, 517 SDslu, 239 SDs, 0 SdLazy, 749 SolverSat, 125 SolverUnsat, 11 SolverUnknown, 0 SolverNotchecked, 23.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 153 GetRequests, 32 SyntacticMatches, 12 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 9.4s 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: 0.0s AutomataMinimizationTime, 12 MinimizatonAttempts, 24 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, 0.3s SatisfiabilityAnalysisTime, 6.9s 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...