/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/ludcmp.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 05:36:54,671 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 05:36:54,674 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 05:36:54,719 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 05:36:54,719 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 05:36:54,727 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 05:36:54,729 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 05:36:54,733 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 05:36:54,735 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 05:36:54,739 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 05:36:54,740 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 05:36:54,741 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 05:36:54,741 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 05:36:54,744 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 05:36:54,746 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 05:36:54,748 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 05:36:54,749 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 05:36:54,750 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 05:36:54,752 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 05:36:54,760 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 05:36:54,762 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 05:36:54,763 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 05:36:54,764 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 05:36:54,764 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 05:36:54,777 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 05:36:54,777 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 05:36:54,777 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 05:36:54,778 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 05:36:54,778 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 05:36:54,779 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 05:36:54,780 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 05:36:54,780 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 05:36:54,781 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 05:36:54,781 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 05:36:54,782 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 05:36:54,782 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 05:36:54,783 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 05:36:54,783 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 05:36:54,783 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 05:36:54,784 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 05:36:54,785 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 05:36:54,786 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 05:36:54,808 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 05:36:54,808 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 05:36:54,809 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 05:36:54,810 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 05:36:54,810 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 05:36:54,810 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 05:36:54,810 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 05:36:54,810 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 05:36:54,811 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 05:36:54,811 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 05:36:54,811 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 05:36:54,811 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 05:36:54,811 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 05:36:54,811 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 05:36:54,812 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 05:36:54,812 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 05:36:54,812 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 05:36:54,812 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 05:36:54,812 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 05:36:54,813 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 05:36:54,813 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 05:36:54,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 05:36:54,813 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 05:36:54,814 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 05:36:54,814 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 05:36:54,814 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 05:36:54,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 05:36:54,814 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 05:36:54,814 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 05:36:54,815 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 05:36:55,128 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 05:36:55,142 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 05:36:55,145 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 05:36:55,147 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 05:36:55,147 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 05:36:55,148 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/ludcmp.c [2020-10-14 05:36:55,222 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f9afd967c/636500bf987541b7bb9f70850fe80f8d/FLAG0933a7f2c [2020-10-14 05:36:55,641 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 05:36:55,642 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/ludcmp.c [2020-10-14 05:36:55,657 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f9afd967c/636500bf987541b7bb9f70850fe80f8d/FLAG0933a7f2c [2020-10-14 05:36:56,004 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f9afd967c/636500bf987541b7bb9f70850fe80f8d [2020-10-14 05:36:56,012 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 05:36:56,013 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 05:36:56,014 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 05:36:56,015 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 05:36:56,018 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 05:36:56,019 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:36:56" (1/1) ... [2020-10-14 05:36:56,023 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50e0e12d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:36:56, skipping insertion in model container [2020-10-14 05:36:56,023 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:36:56" (1/1) ... [2020-10-14 05:36:56,031 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 05:36:56,055 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 05:36:56,271 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 05:36:56,278 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 05:36:56,414 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 05:36:56,440 INFO L208 MainTranslator]: Completed translation [2020-10-14 05:36:56,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:36:56 WrapperNode [2020-10-14 05:36:56,441 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 05:36:56,442 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 05:36:56,442 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 05:36:56,443 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 05:36:56,458 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:36:56" (1/1) ... [2020-10-14 05:36:56,460 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:36:56" (1/1) ... [2020-10-14 05:36:56,486 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:36:56" (1/1) ... [2020-10-14 05:36:56,486 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:36:56" (1/1) ... [2020-10-14 05:36:56,522 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:36:56" (1/1) ... [2020-10-14 05:36:56,530 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:36:56" (1/1) ... [2020-10-14 05:36:56,533 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:36:56" (1/1) ... [2020-10-14 05:36:56,536 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 05:36:56,536 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 05:36:56,536 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 05:36:56,536 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 05:36:56,537 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:36:56" (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 05:36:56,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 05:36:56,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 05:36:56,605 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 05:36:56,605 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs [2020-10-14 05:36:56,605 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 05:36:56,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ludcmp [2020-10-14 05:36:56,606 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 05:36:56,606 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 05:36:56,606 INFO L130 BoogieDeclarations]: Found specification of procedure ludcmp [2020-10-14 05:36:56,606 INFO L130 BoogieDeclarations]: Found specification of procedure fabs [2020-10-14 05:36:56,606 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 05:36:56,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-14 05:36:56,607 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-14 05:36:56,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 05:36:56,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 05:36:56,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 05:36:56,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 05:36:57,095 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 05:36:57,096 INFO L295 CfgBuilder]: Removed 11 assume(true) statements. [2020-10-14 05:36:57,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:36:57 BoogieIcfgContainer [2020-10-14 05:36:57,101 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 05:36:57,102 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 05:36:57,102 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 05:36:57,105 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 05:36:57,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 05:36:56" (1/3) ... [2020-10-14 05:36:57,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64b07fb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:36:57, skipping insertion in model container [2020-10-14 05:36:57,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:36:56" (2/3) ... [2020-10-14 05:36:57,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64b07fb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:36:57, skipping insertion in model container [2020-10-14 05:36:57,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:36:57" (3/3) ... [2020-10-14 05:36:57,109 INFO L109 eAbstractionObserver]: Analyzing ICFG ludcmp.c [2020-10-14 05:36:57,118 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 05:36:57,126 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 05:36:57,138 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 05:36:57,164 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 05:36:57,165 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 05:36:57,165 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 05:36:57,165 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 05:36:57,165 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 05:36:57,166 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 05:36:57,166 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 05:36:57,166 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 05:36:57,187 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states. [2020-10-14 05:36:57,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-14 05:36:57,194 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:36:57,196 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:36:57,196 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:36:57,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:36:57,203 INFO L82 PathProgramCache]: Analyzing trace with hash 406725423, now seen corresponding path program 1 times [2020-10-14 05:36:57,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:36:57,213 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1486450932] [2020-10-14 05:36:57,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:36:57,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:57,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:57,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:57,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 05:36:57,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:57,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-14 05:36:57,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:57,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:57,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:36:57,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 05:36:57,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:36:57,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 05:36:57,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:36:57,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:57,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:57,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:57,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:36:57,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:57,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 05:36:57,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:57,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:57,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:36:57,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:36:57,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:36:57,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:36:57,655 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 05:36:57,656 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1486450932] [2020-10-14 05:36:57,660 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:36:57,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:36:57,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119857143] [2020-10-14 05:36:57,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:36:57,672 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:36:57,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:36:57,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:36:57,691 INFO L87 Difference]: Start difference. First operand 64 states. Second operand 3 states. [2020-10-14 05:36:57,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:36:57,964 INFO L93 Difference]: Finished difference Result 127 states and 191 transitions. [2020-10-14 05:36:57,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:36:57,966 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-10-14 05:36:57,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:36:57,979 INFO L225 Difference]: With dead ends: 127 [2020-10-14 05:36:57,979 INFO L226 Difference]: Without dead ends: 24 [2020-10-14 05:36:57,986 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 05:36:58,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-14 05:36:58,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 20. [2020-10-14 05:36:58,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-14 05:36:58,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2020-10-14 05:36:58,065 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 12 [2020-10-14 05:36:58,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:36:58,065 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2020-10-14 05:36:58,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:36:58,066 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2020-10-14 05:36:58,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-14 05:36:58,067 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:36:58,067 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:36:58,067 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 05:36:58,068 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:36:58,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:36:58,068 INFO L82 PathProgramCache]: Analyzing trace with hash 394719650, now seen corresponding path program 1 times [2020-10-14 05:36:58,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:36:58,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [947924022] [2020-10-14 05:36:58,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:36:58,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:58,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:58,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:58,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 05:36:58,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:58,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-14 05:36:58,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:58,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:58,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 05:36:58,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:36:58,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 05:36:58,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:36:58,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:36:58,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:58,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:58,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:58,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:36:58,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:58,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 05:36:58,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:58,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:58,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:36:58,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:36:58,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:36:58,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:36:58,428 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 05:36:58,429 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [947924022] [2020-10-14 05:36:58,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:36:58,429 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 05:36:58,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962509532] [2020-10-14 05:36:58,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 05:36:58,441 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:36:58,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 05:36:58,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 05:36:58,443 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 5 states. [2020-10-14 05:36:58,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:36:58,600 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2020-10-14 05:36:58,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 05:36:58,601 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-14 05:36:58,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:36:58,602 INFO L225 Difference]: With dead ends: 40 [2020-10-14 05:36:58,602 INFO L226 Difference]: Without dead ends: 26 [2020-10-14 05:36:58,603 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-14 05:36:58,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-14 05:36:58,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 21. [2020-10-14 05:36:58,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-14 05:36:58,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2020-10-14 05:36:58,610 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 12 [2020-10-14 05:36:58,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:36:58,611 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2020-10-14 05:36:58,611 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 05:36:58,611 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2020-10-14 05:36:58,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-14 05:36:58,612 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:36:58,612 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:36:58,612 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 05:36:58,613 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:36:58,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:36:58,613 INFO L82 PathProgramCache]: Analyzing trace with hash -1180233829, now seen corresponding path program 1 times [2020-10-14 05:36:58,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:36:58,614 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [808021088] [2020-10-14 05:36:58,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:36:58,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:58,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:58,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:58,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:58,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 05:36:58,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:36:58,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-10-14 05:36:58,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:58,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:58,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:36:58,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:36:58,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:36:58,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:36:58,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:36:58,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:58,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:58,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:58,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:36:58,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:58,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 05:36:58,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:58,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:58,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:36:58,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:36:58,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:36:58,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:36:58,957 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 05:36:58,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [808021088] [2020-10-14 05:36:58,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:36:58,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 05:36:58,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852762938] [2020-10-14 05:36:58,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 05:36:58,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:36:58,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 05:36:58,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 05:36:58,959 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 6 states. [2020-10-14 05:36:59,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:36:59,120 INFO L93 Difference]: Finished difference Result 45 states and 52 transitions. [2020-10-14 05:36:59,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 05:36:59,120 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-14 05:36:59,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:36:59,121 INFO L225 Difference]: With dead ends: 45 [2020-10-14 05:36:59,121 INFO L226 Difference]: Without dead ends: 30 [2020-10-14 05:36:59,122 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-14 05:36:59,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-14 05:36:59,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 25. [2020-10-14 05:36:59,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-14 05:36:59,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2020-10-14 05:36:59,129 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 16 [2020-10-14 05:36:59,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:36:59,130 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2020-10-14 05:36:59,130 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 05:36:59,130 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2020-10-14 05:36:59,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-14 05:36:59,131 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:36:59,131 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:36:59,132 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 05:36:59,132 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:36:59,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:36:59,132 INFO L82 PathProgramCache]: Analyzing trace with hash -232421100, now seen corresponding path program 2 times [2020-10-14 05:36:59,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:36:59,133 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1797662538] [2020-10-14 05:36:59,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:36:59,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:59,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:59,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:59,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:59,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 05:36:59,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:36:59,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-10-14 05:36:59,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:59,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:59,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 05:36:59,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:36:59,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 05:36:59,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:36:59,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:36:59,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:59,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:59,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:59,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:36:59,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:59,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 05:36:59,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:59,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:59,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:36:59,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:36:59,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:36:59,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:36:59,476 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 05:36:59,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1797662538] [2020-10-14 05:36:59,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:36:59,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 05:36:59,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590434634] [2020-10-14 05:36:59,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 05:36:59,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:36:59,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 05:36:59,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 05:36:59,481 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 5 states. [2020-10-14 05:36:59,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:36:59,669 INFO L93 Difference]: Finished difference Result 63 states and 73 transitions. [2020-10-14 05:36:59,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 05:36:59,670 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-10-14 05:36:59,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:36:59,671 INFO L225 Difference]: With dead ends: 63 [2020-10-14 05:36:59,671 INFO L226 Difference]: Without dead ends: 44 [2020-10-14 05:36:59,672 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-14 05:36:59,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-14 05:36:59,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 28. [2020-10-14 05:36:59,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-14 05:36:59,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2020-10-14 05:36:59,687 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 20 [2020-10-14 05:36:59,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:36:59,688 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2020-10-14 05:36:59,688 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 05:36:59,688 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2020-10-14 05:36:59,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-14 05:36:59,689 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:36:59,689 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:36:59,691 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 05:36:59,691 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:36:59,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:36:59,692 INFO L82 PathProgramCache]: Analyzing trace with hash -490586538, now seen corresponding path program 1 times [2020-10-14 05:36:59,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:36:59,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1021051517] [2020-10-14 05:36:59,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:36:59,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:59,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:59,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:59,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:59,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 05:36:59,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:36:59,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 254 [2020-10-14 05:36:59,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:59,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:59,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:36:59,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:36:59,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 05:36:59,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:37:00,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:37:00,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:37:00,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:37:00,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:37:00,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:37:00,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:37:00,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 05:37:00,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:37:00,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:37:00,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:37:00,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:37:00,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:37:00,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:37:00,065 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:37:00,065 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1021051517] [2020-10-14 05:37:00,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:37:00,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 05:37:00,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710891143] [2020-10-14 05:37:00,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 05:37:00,070 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:37:00,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 05:37:00,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 05:37:00,070 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 7 states. [2020-10-14 05:37:00,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:37:00,257 INFO L93 Difference]: Finished difference Result 67 states and 80 transitions. [2020-10-14 05:37:00,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 05:37:00,258 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-10-14 05:37:00,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:37:00,259 INFO L225 Difference]: With dead ends: 67 [2020-10-14 05:37:00,259 INFO L226 Difference]: Without dead ends: 48 [2020-10-14 05:37:00,260 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 05:37:00,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-14 05:37:00,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 39. [2020-10-14 05:37:00,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-14 05:37:00,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2020-10-14 05:37:00,268 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 20 [2020-10-14 05:37:00,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:37:00,269 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2020-10-14 05:37:00,269 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 05:37:00,269 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2020-10-14 05:37:00,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-14 05:37:00,270 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:37:00,270 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:37:00,270 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 05:37:00,270 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:37:00,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:37:00,271 INFO L82 PathProgramCache]: Analyzing trace with hash -1471880625, now seen corresponding path program 2 times [2020-10-14 05:37:00,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:37:00,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1342747835] [2020-10-14 05:37:00,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:37:00,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:37:00,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:37:00,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:37:00,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:37:00,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 05:37:00,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:37:00,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-10-14 05:37:00,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:37:00,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:37:00,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:37:00,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:37:00,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 05:37:00,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:37:00,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:37:00,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:37:00,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:37:00,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:37:00,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:37:00,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:37:00,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 05:37:00,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:37:00,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:37:00,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:37:00,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:37:00,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:37:00,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:37:00,592 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:37:00,593 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1342747835] [2020-10-14 05:37:00,595 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:37:00,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 05:37:00,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444698637] [2020-10-14 05:37:00,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 05:37:00,596 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:37:00,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 05:37:00,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 05:37:00,597 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand 8 states. [2020-10-14 05:37:00,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:37:00,806 INFO L93 Difference]: Finished difference Result 68 states and 81 transitions. [2020-10-14 05:37:00,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 05:37:00,806 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2020-10-14 05:37:00,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:37:00,808 INFO L225 Difference]: With dead ends: 68 [2020-10-14 05:37:00,808 INFO L226 Difference]: Without dead ends: 49 [2020-10-14 05:37:00,809 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-14 05:37:00,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-14 05:37:00,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 43. [2020-10-14 05:37:00,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-14 05:37:00,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2020-10-14 05:37:00,823 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 24 [2020-10-14 05:37:00,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:37:00,823 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2020-10-14 05:37:00,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 05:37:00,824 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2020-10-14 05:37:00,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-14 05:37:00,825 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:37:00,825 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:37:00,826 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 05:37:00,826 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:37:00,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:37:00,826 INFO L82 PathProgramCache]: Analyzing trace with hash -479010360, now seen corresponding path program 3 times [2020-10-14 05:37:00,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:37:00,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1710039381] [2020-10-14 05:37:00,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:37:00,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:37:00,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:37:00,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:37:00,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:37:00,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 05:37:00,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:37:00,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-14 05:37:00,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:37:00,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:37:00,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:37:00,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:37:00,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 05:37:00,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:37:01,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:37:01,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:37:01,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:37:01,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:37:01,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:37:01,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:37:01,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 05:37:01,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:37:01,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:37:01,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:37:01,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:37:01,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:37:01,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:37:01,110 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:37:01,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1710039381] [2020-10-14 05:37:01,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:37:01,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 05:37:01,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46218025] [2020-10-14 05:37:01,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 05:37:01,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:37:01,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 05:37:01,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-14 05:37:01,113 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand 9 states. [2020-10-14 05:37:01,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:37:01,377 INFO L93 Difference]: Finished difference Result 72 states and 86 transitions. [2020-10-14 05:37:01,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 05:37:01,377 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2020-10-14 05:37:01,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:37:01,378 INFO L225 Difference]: With dead ends: 72 [2020-10-14 05:37:01,378 INFO L226 Difference]: Without dead ends: 53 [2020-10-14 05:37:01,380 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-10-14 05:37:01,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-14 05:37:01,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 47. [2020-10-14 05:37:01,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-14 05:37:01,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2020-10-14 05:37:01,393 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 28 [2020-10-14 05:37:01,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:37:01,393 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2020-10-14 05:37:01,393 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 05:37:01,393 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2020-10-14 05:37:01,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 05:37:01,394 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:37:01,394 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:37:01,395 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 05:37:01,395 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:37:01,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:37:01,395 INFO L82 PathProgramCache]: Analyzing trace with hash -801997631, now seen corresponding path program 4 times [2020-10-14 05:37:01,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:37:01,396 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [214571825] [2020-10-14 05:37:01,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:37:01,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:37:01,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:37:01,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:37:01,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:37:01,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 05:37:01,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:37:01,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 318 [2020-10-14 05:37:01,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:37:01,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:37:01,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:37:01,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:37:01,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 05:37:01,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:37:01,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:37:01,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:37:01,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:37:01,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:37:01,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:37:01,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:37:01,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 05:37:01,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:37:01,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:37:01,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:37:01,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:37:01,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:37:01,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:37:01,866 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:37:01,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [214571825] [2020-10-14 05:37:01,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:37:01,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 05:37:01,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81302193] [2020-10-14 05:37:01,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 05:37:01,868 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:37:01,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 05:37:01,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-14 05:37:01,869 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand 10 states. [2020-10-14 05:37:02,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:37:02,121 INFO L93 Difference]: Finished difference Result 73 states and 87 transitions. [2020-10-14 05:37:02,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 05:37:02,121 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 32 [2020-10-14 05:37:02,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:37:02,122 INFO L225 Difference]: With dead ends: 73 [2020-10-14 05:37:02,122 INFO L226 Difference]: Without dead ends: 54 [2020-10-14 05:37:02,123 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2020-10-14 05:37:02,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-14 05:37:02,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 51. [2020-10-14 05:37:02,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-14 05:37:02,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 60 transitions. [2020-10-14 05:37:02,136 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 60 transitions. Word has length 32 [2020-10-14 05:37:02,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:37:02,136 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 60 transitions. [2020-10-14 05:37:02,137 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 05:37:02,137 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 60 transitions. [2020-10-14 05:37:02,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 05:37:02,140 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:37:02,140 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:37:02,141 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 05:37:02,141 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:37:02,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:37:02,141 INFO L82 PathProgramCache]: Analyzing trace with hash -850791622, now seen corresponding path program 5 times [2020-10-14 05:37:02,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:37:02,142 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [115595532] [2020-10-14 05:37:02,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:37:02,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-14 05:37:02,160 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-14 05:37:02,161 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 05:37:02,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 05:37:02,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 05:37:02 BoogieIcfgContainer [2020-10-14 05:37:02,188 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 05:37:02,191 INFO L168 Benchmark]: Toolchain (without parser) took 6176.13 ms. Allocated memory was 147.8 MB in the beginning and 273.2 MB in the end (delta: 125.3 MB). Free memory was 104.2 MB in the beginning and 199.8 MB in the end (delta: -95.5 MB). Peak memory consumption was 29.8 MB. Max. memory is 7.1 GB. [2020-10-14 05:37:02,192 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.0 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-10-14 05:37:02,193 INFO L168 Benchmark]: CACSL2BoogieTranslator took 427.30 ms. Allocated memory was 147.8 MB in the beginning and 203.9 MB in the end (delta: 56.1 MB). Free memory was 103.8 MB in the beginning and 180.3 MB in the end (delta: -76.5 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2020-10-14 05:37:02,194 INFO L168 Benchmark]: Boogie Preprocessor took 93.68 ms. Allocated memory is still 203.9 MB. Free memory was 180.3 MB in the beginning and 178.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-10-14 05:37:02,198 INFO L168 Benchmark]: RCFGBuilder took 564.48 ms. Allocated memory is still 203.9 MB. Free memory was 178.4 MB in the beginning and 150.8 MB in the end (delta: 27.6 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. [2020-10-14 05:37:02,200 INFO L168 Benchmark]: TraceAbstraction took 5086.25 ms. Allocated memory was 203.9 MB in the beginning and 273.2 MB in the end (delta: 69.2 MB). Free memory was 149.9 MB in the beginning and 199.8 MB in the end (delta: -49.9 MB). Peak memory consumption was 19.3 MB. Max. memory is 7.1 GB. [2020-10-14 05:37:02,212 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 122.4 MB in the beginning and 122.0 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 427.30 ms. Allocated memory was 147.8 MB in the beginning and 203.9 MB in the end (delta: 56.1 MB). Free memory was 103.8 MB in the beginning and 180.3 MB in the end (delta: -76.5 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 93.68 ms. Allocated memory is still 203.9 MB. Free memory was 180.3 MB in the beginning and 178.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 564.48 ms. Allocated memory is still 203.9 MB. Free memory was 178.4 MB in the beginning and 150.8 MB in the end (delta: 27.6 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5086.25 ms. Allocated memory was 203.9 MB in the beginning and 273.2 MB in the end (delta: 69.2 MB). Free memory was 149.9 MB in the beginning and 199.8 MB in the end (delta: -49.9 MB). Peak memory consumption was 19.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 5]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of to_real at line 96, overapproximation of someBinaryArithmeticDOUBLEoperation at line 98. Possible FailurePath: [L69] double a[50][50], b[50], x[50]; [L86] int i, j, nmax = 50, n = 5, chkerr; [L87] double eps, w; [L89] eps = 1.0e-6 [L91] i = 0 [L91] COND TRUE i <= n [L93] w = 0.0 [L94] j = 0 [L94] COND TRUE j <= n [L96] a[i][j] = (i + 1) + (j + 1) [L97] COND TRUE i == j [L97] EXPR a[i][j] [L97] a[i][j] *= 10.0 [L98] EXPR a[i][j] [L98] w += a[i][j] [L94] j++ [L94] COND TRUE j <= n [L96] a[i][j] = (i + 1) + (j + 1) [L97] COND FALSE !(i == j) [L98] EXPR a[i][j] [L98] w += a[i][j] [L94] j++ [L94] COND TRUE j <= n [L96] a[i][j] = (i + 1) + (j + 1) [L97] COND FALSE !(i == j) [L98] EXPR a[i][j] [L98] w += a[i][j] [L94] j++ [L94] COND TRUE j <= n [L96] a[i][j] = (i + 1) + (j + 1) [L97] COND FALSE !(i == j) [L98] EXPR a[i][j] [L98] w += a[i][j] [L94] j++ [L94] COND TRUE j <= n [L96] a[i][j] = (i + 1) + (j + 1) [L97] COND FALSE !(i == j) [L98] EXPR a[i][j] [L98] w += a[i][j] [L94] j++ [L94] COND TRUE j <= n [L96] a[i][j] = (i + 1) + (j + 1) [L97] COND FALSE !(i == j) [L98] EXPR a[i][j] [L98] w += a[i][j] [L94] j++ [L94] COND FALSE !(j <= n) [L100] CALL __VERIFIER_assert(i==2) [L4] COND TRUE !(cond) [L5] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 64 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.0s, OverallIterations: 9, TraceHistogramMax: 6, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 177 SDtfs, 219 SDslu, 226 SDs, 0 SdLazy, 651 SolverSat, 63 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 93 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=64occurred 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: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 54 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 200 NumberOfCodeBlocks, 200 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 156 ConstructedInterpolants, 0 QuantifiedInterpolants, 16028 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 6/101 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request...