/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/sumt3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 05:33:16,742 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 05:33:16,745 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 05:33:16,785 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 05:33:16,786 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 05:33:16,794 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 05:33:16,795 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 05:33:16,797 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 05:33:16,799 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 05:33:16,800 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 05:33:16,802 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 05:33:16,804 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 05:33:16,804 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 05:33:16,807 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 05:33:16,809 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 05:33:16,810 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 05:33:16,812 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 05:33:16,813 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 05:33:16,814 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 05:33:16,819 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 05:33:16,822 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 05:33:16,822 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 05:33:16,824 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 05:33:16,824 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 05:33:16,835 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 05:33:16,835 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 05:33:16,835 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 05:33:16,836 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 05:33:16,837 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 05:33:16,840 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 05:33:16,840 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 05:33:16,840 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 05:33:16,841 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 05:33:16,842 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 05:33:16,842 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 05:33:16,843 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 05:33:16,843 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 05:33:16,844 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 05:33:16,844 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 05:33:16,845 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 05:33:16,846 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 05:33:16,847 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 [2020-10-14 05:33:16,884 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 05:33:16,884 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 05:33:16,886 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 05:33:16,886 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 05:33:16,886 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 05:33:16,886 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 05:33:16,887 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 05:33:16,887 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 05:33:16,887 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 05:33:16,887 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 05:33:16,888 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 05:33:16,888 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 05:33:16,889 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 05:33:16,889 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 05:33:16,889 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 05:33:16,890 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 05:33:16,890 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 05:33:16,890 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 05:33:16,890 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 05:33:16,890 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 05:33:16,891 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 05:33:16,891 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 05:33:16,891 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 05:33:16,891 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 05:33:16,891 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 05:33:16,892 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 05:33:16,892 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 05:33:16,892 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 05:33:16,892 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 05:33:16,892 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 05:33:17,182 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 05:33:17,198 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 05:33:17,208 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 05:33:17,209 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 05:33:17,209 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 05:33:17,210 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/sumt3.c [2020-10-14 05:33:17,270 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee941a1b2/60d3df3bd5bb4fccac72c3eb8afb2131/FLAGbd2bb7a57 [2020-10-14 05:33:17,685 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 05:33:17,686 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops-crafted-1/sumt3.c [2020-10-14 05:33:17,692 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee941a1b2/60d3df3bd5bb4fccac72c3eb8afb2131/FLAGbd2bb7a57 [2020-10-14 05:33:18,139 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee941a1b2/60d3df3bd5bb4fccac72c3eb8afb2131 [2020-10-14 05:33:18,148 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 05:33:18,149 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 05:33:18,150 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 05:33:18,151 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 05:33:18,154 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 05:33:18,155 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:33:18" (1/1) ... [2020-10-14 05:33:18,158 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75ef6d5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:33:18, skipping insertion in model container [2020-10-14 05:33:18,159 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:33:18" (1/1) ... [2020-10-14 05:33:18,166 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 05:33:18,187 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 05:33:18,392 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 05:33:18,396 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 05:33:18,415 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 05:33:18,428 INFO L208 MainTranslator]: Completed translation [2020-10-14 05:33:18,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:33:18 WrapperNode [2020-10-14 05:33:18,429 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 05:33:18,429 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 05:33:18,430 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 05:33:18,430 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 05:33:18,440 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:33:18" (1/1) ... [2020-10-14 05:33:18,440 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:33:18" (1/1) ... [2020-10-14 05:33:18,527 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:33:18" (1/1) ... [2020-10-14 05:33:18,528 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:33:18" (1/1) ... [2020-10-14 05:33:18,532 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:33:18" (1/1) ... [2020-10-14 05:33:18,538 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:33:18" (1/1) ... [2020-10-14 05:33:18,539 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:33:18" (1/1) ... [2020-10-14 05:33:18,540 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 05:33:18,541 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 05:33:18,541 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 05:33:18,541 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 05:33:18,542 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:33:18" (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 [2020-10-14 05:33:18,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 05:33:18,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 05:33:18,598 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 05:33:18,598 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 05:33:18,598 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 05:33:18,598 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 05:33:18,599 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 05:33:18,599 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 05:33:18,600 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 05:33:18,600 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 05:33:18,600 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 05:33:18,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 05:33:18,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 05:33:18,863 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 05:33:18,863 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 05:33:18,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:33:18 BoogieIcfgContainer [2020-10-14 05:33:18,881 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 05:33:18,886 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 05:33:18,886 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 05:33:18,889 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 05:33:18,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 05:33:18" (1/3) ... [2020-10-14 05:33:18,896 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@667ecb64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:33:18, skipping insertion in model container [2020-10-14 05:33:18,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:33:18" (2/3) ... [2020-10-14 05:33:18,896 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@667ecb64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:33:18, skipping insertion in model container [2020-10-14 05:33:18,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:33:18" (3/3) ... [2020-10-14 05:33:18,902 INFO L109 eAbstractionObserver]: Analyzing ICFG sumt3.c [2020-10-14 05:33:18,925 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 05:33:18,932 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 05:33:18,944 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 05:33:18,968 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 05:33:18,968 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 05:33:18,969 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 05:33:18,969 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 05:33:18,969 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 05:33:18,969 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 05:33:18,969 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 05:33:18,969 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 05:33:18,986 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-10-14 05:33:18,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-14 05:33:18,991 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:33:18,992 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:33:18,993 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:33:18,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:33:18,998 INFO L82 PathProgramCache]: Analyzing trace with hash -320041890, now seen corresponding path program 1 times [2020-10-14 05:33:19,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:33:19,005 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [772114490] [2020-10-14 05:33:19,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:33:19,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:19,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:19,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:19,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:19,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 05:33:19,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:33:19,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-10-14 05:33:19,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:19,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:19,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:33:19,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 05:33:19,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:33:19,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 05:33:19,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:33:19,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:19,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:19,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:19,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:33:19,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:19,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 05:33:19,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:19,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:19,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:33:19,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:33:19,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:33:19,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 05:33:19,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:33:19,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [772114490] [2020-10-14 05:33:19,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:33:19,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:33:19,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520835480] [2020-10-14 05:33:19,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:33:19,504 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:33:19,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:33:19,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:33:19,523 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 3 states. [2020-10-14 05:33:19,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:33:19,617 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2020-10-14 05:33:19,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:33:19,619 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-10-14 05:33:19,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:33:19,630 INFO L225 Difference]: With dead ends: 35 [2020-10-14 05:33:19,631 INFO L226 Difference]: Without dead ends: 16 [2020-10-14 05:33:19,637 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 [2020-10-14 05:33:19,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-10-14 05:33:19,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-10-14 05:33:19,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-14 05:33:19,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2020-10-14 05:33:19,683 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 12 [2020-10-14 05:33:19,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:33:19,684 INFO L479 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2020-10-14 05:33:19,684 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:33:19,684 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-10-14 05:33:19,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-14 05:33:19,686 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:33:19,686 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:33:19,687 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 05:33:19,687 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:33:19,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:33:19,687 INFO L82 PathProgramCache]: Analyzing trace with hash -334818226, now seen corresponding path program 1 times [2020-10-14 05:33:19,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:33:19,688 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1420386664] [2020-10-14 05:33:19,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:33:19,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:19,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:19,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:19,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 05:33:19,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:19,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-14 05:33:19,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:19,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:19,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:33:19,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 05:33:19,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:33:19,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:33:19,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:33:19,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:19,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:19,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:19,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:33:19,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:19,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:33:19,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:19,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:19,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:33:19,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:33:19,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:33:19,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:33:19,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:33:19,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1420386664] [2020-10-14 05:33:19,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:33:19,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 05:33:19,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652033209] [2020-10-14 05:33:19,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 05:33:19,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:33:19,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 05:33:19,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 05:33:19,928 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 6 states. [2020-10-14 05:33:20,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:33:20,032 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2020-10-14 05:33:20,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 05:33:20,033 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-10-14 05:33:20,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:33:20,035 INFO L225 Difference]: With dead ends: 30 [2020-10-14 05:33:20,036 INFO L226 Difference]: Without dead ends: 18 [2020-10-14 05:33:20,037 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-14 05:33:20,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-10-14 05:33:20,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-10-14 05:33:20,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-14 05:33:20,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2020-10-14 05:33:20,044 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 12 [2020-10-14 05:33:20,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:33:20,044 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2020-10-14 05:33:20,044 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 05:33:20,045 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2020-10-14 05:33:20,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-14 05:33:20,045 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:33:20,046 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:33:20,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 05:33:20,046 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:33:20,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:33:20,047 INFO L82 PathProgramCache]: Analyzing trace with hash -135124987, now seen corresponding path program 1 times [2020-10-14 05:33:20,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:33:20,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [96738209] [2020-10-14 05:33:20,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:33:20,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:20,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:20,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:20,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 05:33:20,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:20,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 316 [2020-10-14 05:33:20,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:20,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:20,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:33:20,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 05:33:20,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:33:20,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:33:20,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:33:20,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:20,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:20,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:20,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:33:20,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:20,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:33:20,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:20,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:20,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:33:20,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:33:20,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:33:20,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:33:20,646 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:33:20,647 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [96738209] [2020-10-14 05:33:20,647 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:33:20,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 05:33:20,648 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228682284] [2020-10-14 05:33:20,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 05:33:20,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:33:20,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 05:33:20,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-14 05:33:20,649 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 8 states. [2020-10-14 05:33:20,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:33:20,853 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2020-10-14 05:33:20,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 05:33:20,854 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-10-14 05:33:20,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:33:20,855 INFO L225 Difference]: With dead ends: 27 [2020-10-14 05:33:20,855 INFO L226 Difference]: Without dead ends: 22 [2020-10-14 05:33:20,856 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-10-14 05:33:20,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-10-14 05:33:20,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2020-10-14 05:33:20,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-14 05:33:20,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2020-10-14 05:33:20,862 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 15 [2020-10-14 05:33:20,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:33:20,863 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2020-10-14 05:33:20,863 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 05:33:20,863 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2020-10-14 05:33:20,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-14 05:33:20,864 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:33:20,864 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:33:20,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 05:33:20,865 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:33:20,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:33:20,865 INFO L82 PathProgramCache]: Analyzing trace with hash 396453102, now seen corresponding path program 2 times [2020-10-14 05:33:20,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:33:20,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1568300747] [2020-10-14 05:33:20,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:33:20,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:20,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:21,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:21,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:21,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 05:33:21,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:33:21,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 471 [2020-10-14 05:33:21,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:21,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:21,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 05:33:21,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 05:33:21,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:33:21,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:33:21,546 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 22 [2020-10-14 05:33:21,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:33:21,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:21,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:21,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:21,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:33:21,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:21,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:33:21,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:21,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:21,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:33:21,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:33:21,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:33:21,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 05:33:21,573 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:33:21,573 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1568300747] [2020-10-14 05:33:21,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:33:21,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 05:33:21,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540444802] [2020-10-14 05:33:21,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 05:33:21,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:33:21,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 05:33:21,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 05:33:21,578 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 5 states. [2020-10-14 05:33:21,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:33:21,702 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions. [2020-10-14 05:33:21,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 05:33:21,703 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-14 05:33:21,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:33:21,705 INFO L225 Difference]: With dead ends: 32 [2020-10-14 05:33:21,705 INFO L226 Difference]: Without dead ends: 23 [2020-10-14 05:33:21,705 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 05:33:21,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-14 05:33:21,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2020-10-14 05:33:21,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-14 05:33:21,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2020-10-14 05:33:21,714 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 18 [2020-10-14 05:33:21,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:33:21,715 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2020-10-14 05:33:21,715 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 05:33:21,715 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2020-10-14 05:33:21,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-14 05:33:21,716 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:33:21,717 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:33:21,717 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 05:33:21,717 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:33:21,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:33:21,718 INFO L82 PathProgramCache]: Analyzing trace with hash -291244452, now seen corresponding path program 1 times [2020-10-14 05:33:21,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:33:21,719 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [293747352] [2020-10-14 05:33:21,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:33:21,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:21,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:21,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:21,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 05:33:21,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:21,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-14 05:33:21,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:21,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:21,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 05:33:21,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 05:33:21,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:33:21,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:33:22,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:33:22,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:22,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:22,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:22,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:33:22,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:22,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:33:22,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:22,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:22,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:33:22,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:33:22,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:33:22,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:33:22,015 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:33:22,015 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [293747352] [2020-10-14 05:33:22,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:33:22,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 05:33:22,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31663927] [2020-10-14 05:33:22,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 05:33:22,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:33:22,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 05:33:22,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 05:33:22,019 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 5 states. [2020-10-14 05:33:22,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:33:22,112 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2020-10-14 05:33:22,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 05:33:22,112 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-10-14 05:33:22,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:33:22,113 INFO L225 Difference]: With dead ends: 32 [2020-10-14 05:33:22,114 INFO L226 Difference]: Without dead ends: 23 [2020-10-14 05:33:22,114 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 05:33:22,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-14 05:33:22,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2020-10-14 05:33:22,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-14 05:33:22,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2020-10-14 05:33:22,124 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 19 [2020-10-14 05:33:22,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:33:22,125 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2020-10-14 05:33:22,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 05:33:22,125 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2020-10-14 05:33:22,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-14 05:33:22,126 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:33:22,126 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:33:22,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 05:33:22,127 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:33:22,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:33:22,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1483762910, now seen corresponding path program 1 times [2020-10-14 05:33:22,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:33:22,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [772010587] [2020-10-14 05:33:22,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:33:22,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:22,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:22,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:22,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 05:33:22,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:22,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 320 [2020-10-14 05:33:22,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:22,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:22,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:33:22,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 05:33:22,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 05:33:22,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:33:22,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:33:22,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:22,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:22,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:22,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:33:22,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:22,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:33:22,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:22,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:22,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:33:22,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:33:22,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:33:22,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 05:33:22,653 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 05:33:22,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [772010587] [2020-10-14 05:33:22,655 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:33:22,655 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 05:33:22,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682708768] [2020-10-14 05:33:22,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 05:33:22,657 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:33:22,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 05:33:22,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-14 05:33:22,658 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 8 states. [2020-10-14 05:33:24,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:33:24,839 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2020-10-14 05:33:24,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 05:33:24,840 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-10-14 05:33:24,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:33:24,841 INFO L225 Difference]: With dead ends: 22 [2020-10-14 05:33:24,841 INFO L226 Difference]: Without dead ends: 0 [2020-10-14 05:33:24,842 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-14 05:33:24,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-14 05:33:24,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-14 05:33:24,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-14 05:33:24,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-14 05:33:24,844 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-10-14 05:33:24,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:33:24,844 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-14 05:33:24,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 05:33:24,844 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-14 05:33:24,844 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-14 05:33:24,845 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 05:33:24,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-14 05:33:25,027 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-14 05:33:25,027 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (= ~SIZE~0 |old(~SIZE~0)|) [2020-10-14 05:33:25,028 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-14 05:33:25,028 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-14 05:33:25,028 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-14 05:33:25,028 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-14 05:33:25,028 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-14 05:33:25,028 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-10-14 05:33:25,028 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-10-14 05:33:25,028 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-10-14 05:33:25,029 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-10-14 05:33:25,029 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 14 34) no Hoare annotation was computed. [2020-10-14 05:33:25,029 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-10-14 05:33:25,029 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 14 34) no Hoare annotation was computed. [2020-10-14 05:33:25,029 INFO L268 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2020-10-14 05:33:25,029 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 14 34) the Hoare annotation is: true [2020-10-14 05:33:25,029 INFO L268 CegarLoopResult]: For program point L26(lines 26 29) no Hoare annotation was computed. [2020-10-14 05:33:25,030 INFO L268 CegarLoopResult]: For program point L24(lines 24 29) no Hoare annotation was computed. [2020-10-14 05:33:25,030 INFO L268 CegarLoopResult]: For program point L26-2(lines 24 29) no Hoare annotation was computed. [2020-10-14 05:33:25,030 INFO L264 CegarLoopResult]: At program point L22-2(lines 22 31) the Hoare annotation is: (let ((.cse0 (+ main_~i~0 main_~j~0 main_~k~0))) (and (<= main_~l~0 .cse0) (<= .cse0 main_~l~0))) [2020-10-14 05:33:25,031 INFO L264 CegarLoopResult]: At program point L22-3(lines 22 31) the Hoare annotation is: (let ((.cse0 (+ main_~i~0 main_~j~0 main_~k~0))) (or (and (<= main_~l~0 .cse0) (<= .cse0 main_~l~0)) (let ((.cse3 (div .cse0 4294967296)) (.cse4 (div main_~l~0 4294967296))) (let ((.cse2 (+ main_~i~0 main_~j~0 main_~k~0 (* 4294967296 .cse4))) (.cse1 (* 4294967296 .cse3))) (and (<= (+ main_~l~0 .cse1) .cse2) (< 0 (+ .cse3 1)) (<= .cse4 0) (< .cse2 (+ main_~l~0 .cse1 1))))))) [2020-10-14 05:33:25,031 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-10-14 05:33:25,031 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-10-14 05:33:25,031 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-10-14 05:33:25,032 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-10-14 05:33:25,032 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-10-14 05:33:25,032 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-10-14 05:33:25,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 05:33:25 BoogieIcfgContainer [2020-10-14 05:33:25,059 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 05:33:25,064 INFO L168 Benchmark]: Toolchain (without parser) took 6911.83 ms. Allocated memory was 147.8 MB in the beginning and 241.2 MB in the end (delta: 93.3 MB). Free memory was 102.9 MB in the beginning and 108.0 MB in the end (delta: -5.2 MB). Peak memory consumption was 88.2 MB. Max. memory is 7.1 GB. [2020-10-14 05:33:25,065 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 147.8 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-10-14 05:33:25,071 INFO L168 Benchmark]: CACSL2BoogieTranslator took 278.79 ms. Allocated memory is still 147.8 MB. Free memory was 102.4 MB in the beginning and 92.8 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-10-14 05:33:25,073 INFO L168 Benchmark]: Boogie Preprocessor took 111.09 ms. Allocated memory was 147.8 MB in the beginning and 203.4 MB in the end (delta: 55.6 MB). Free memory was 92.8 MB in the beginning and 181.6 MB in the end (delta: -88.8 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2020-10-14 05:33:25,074 INFO L168 Benchmark]: RCFGBuilder took 340.65 ms. Allocated memory is still 203.4 MB. Free memory was 181.6 MB in the beginning and 168.8 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. [2020-10-14 05:33:25,075 INFO L168 Benchmark]: TraceAbstraction took 6173.15 ms. Allocated memory was 203.4 MB in the beginning and 241.2 MB in the end (delta: 37.7 MB). Free memory was 168.1 MB in the beginning and 108.0 MB in the end (delta: 60.1 MB). Peak memory consumption was 97.9 MB. Max. memory is 7.1 GB. [2020-10-14 05:33:25,088 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 147.8 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 278.79 ms. Allocated memory is still 147.8 MB. Free memory was 102.4 MB in the beginning and 92.8 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 111.09 ms. Allocated memory was 147.8 MB in the beginning and 203.4 MB in the end (delta: 55.6 MB). Free memory was 92.8 MB in the beginning and 181.6 MB in the end (delta: -88.8 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 340.65 ms. Allocated memory is still 203.4 MB. Free memory was 181.6 MB in the beginning and 168.8 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6173.15 ms. Allocated memory was 203.4 MB in the beginning and 241.2 MB in the end (delta: 37.7 MB). Free memory was 168.1 MB in the beginning and 108.0 MB in the end (delta: 60.1 MB). Peak memory consumption was 97.9 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: 22]: Loop Invariant Derived loop invariant: l <= i + j + k && i + j + k <= l - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.8s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 75 SDtfs, 102 SDslu, 112 SDs, 0 SdLazy, 225 SolverSat, 36 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 61 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, 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, 6 MinimizatonAttempts, 5 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 13 PreInvPairs, 19 NumberOfFragments, 91 HoareAnnotationTreeSize, 13 FomulaSimplifications, 165 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 51 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 95 NumberOfCodeBlocks, 95 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 89 ConstructedInterpolants, 0 QuantifiedInterpolants, 10483 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 9/16 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...