/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/array-tiling/skippedu.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 00:10:08,639 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 00:10:08,642 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 00:10:08,685 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 00:10:08,686 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 00:10:08,694 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 00:10:08,695 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 00:10:08,699 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 00:10:08,702 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 00:10:08,705 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 00:10:08,706 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 00:10:08,707 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 00:10:08,707 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 00:10:08,709 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 00:10:08,710 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 00:10:08,711 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 00:10:08,715 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 00:10:08,715 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 00:10:08,717 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 00:10:08,719 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 00:10:08,720 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 00:10:08,721 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 00:10:08,722 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 00:10:08,723 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 00:10:08,725 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 00:10:08,725 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 00:10:08,726 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 00:10:08,727 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 00:10:08,727 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 00:10:08,728 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 00:10:08,728 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 00:10:08,729 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 00:10:08,729 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 00:10:08,730 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 00:10:08,731 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 00:10:08,731 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 00:10:08,732 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 00:10:08,732 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 00:10:08,732 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 00:10:08,733 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 00:10:08,734 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 00:10:08,735 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 00:10:08,757 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 00:10:08,758 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 00:10:08,759 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 00:10:08,759 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 00:10:08,759 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 00:10:08,759 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 00:10:08,760 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 00:10:08,760 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 00:10:08,760 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 00:10:08,760 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 00:10:08,761 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 00:10:08,761 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 00:10:08,761 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 00:10:08,761 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 00:10:08,761 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 00:10:08,761 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 00:10:08,762 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 00:10:08,762 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 00:10:08,762 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 00:10:08,762 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 00:10:08,762 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 00:10:08,763 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 00:10:08,763 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 00:10:08,763 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 00:10:08,763 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 00:10:08,763 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 00:10:08,764 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 00:10:08,764 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 00:10:08,764 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 00:10:08,764 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 00:10:09,112 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 00:10:09,134 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 00:10:09,141 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 00:10:09,143 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 00:10:09,143 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 00:10:09,144 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/skippedu.c [2020-10-14 00:10:09,208 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c4c462644/4764dc92f6aa42df93eae303fefb6cac/FLAG6e8832fb8 [2020-10-14 00:10:09,700 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 00:10:09,701 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-tiling/skippedu.c [2020-10-14 00:10:09,708 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c4c462644/4764dc92f6aa42df93eae303fefb6cac/FLAG6e8832fb8 [2020-10-14 00:10:10,069 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c4c462644/4764dc92f6aa42df93eae303fefb6cac [2020-10-14 00:10:10,079 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 00:10:10,081 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 00:10:10,084 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 00:10:10,084 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 00:10:10,088 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 00:10:10,089 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:10:10" (1/1) ... [2020-10-14 00:10:10,093 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@489556b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:10:10, skipping insertion in model container [2020-10-14 00:10:10,093 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:10:10" (1/1) ... [2020-10-14 00:10:10,101 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 00:10:10,124 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 00:10:10,312 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 00:10:10,323 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 00:10:10,345 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 00:10:10,455 INFO L208 MainTranslator]: Completed translation [2020-10-14 00:10:10,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:10:10 WrapperNode [2020-10-14 00:10:10,456 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 00:10:10,456 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 00:10:10,457 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 00:10:10,457 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 00:10:10,467 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:10:10" (1/1) ... [2020-10-14 00:10:10,469 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:10:10" (1/1) ... [2020-10-14 00:10:10,479 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:10:10" (1/1) ... [2020-10-14 00:10:10,480 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:10:10" (1/1) ... [2020-10-14 00:10:10,488 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:10:10" (1/1) ... [2020-10-14 00:10:10,494 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:10:10" (1/1) ... [2020-10-14 00:10:10,496 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:10:10" (1/1) ... [2020-10-14 00:10:10,500 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 00:10:10,500 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 00:10:10,500 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 00:10:10,501 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 00:10:10,502 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:10:10" (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 00:10:10,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 00:10:10,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 00:10:10,563 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 00:10:10,563 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 00:10:10,564 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 00:10:10,564 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 00:10:10,564 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 00:10:10,564 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 00:10:10,564 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 00:10:10,564 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 00:10:10,565 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-14 00:10:10,565 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 00:10:10,565 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-14 00:10:10,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 00:10:10,565 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 00:10:10,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 00:10:10,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 00:10:10,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 00:10:10,928 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 00:10:10,929 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-14 00:10:10,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:10:10 BoogieIcfgContainer [2020-10-14 00:10:10,933 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 00:10:10,934 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 00:10:10,935 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 00:10:10,938 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 00:10:10,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 12:10:10" (1/3) ... [2020-10-14 00:10:10,939 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@175eb8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:10:10, skipping insertion in model container [2020-10-14 00:10:10,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:10:10" (2/3) ... [2020-10-14 00:10:10,940 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@175eb8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:10:10, skipping insertion in model container [2020-10-14 00:10:10,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:10:10" (3/3) ... [2020-10-14 00:10:10,942 INFO L109 eAbstractionObserver]: Analyzing ICFG skippedu.c [2020-10-14 00:10:10,955 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 00:10:10,962 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 00:10:10,977 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 00:10:11,003 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 00:10:11,003 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 00:10:11,004 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 00:10:11,004 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 00:10:11,004 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 00:10:11,004 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 00:10:11,004 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 00:10:11,005 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 00:10:11,023 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-10-14 00:10:11,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-14 00:10:11,029 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:10:11,030 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:10:11,030 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:10:11,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:10:11,036 INFO L82 PathProgramCache]: Analyzing trace with hash -978746934, now seen corresponding path program 1 times [2020-10-14 00:10:11,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:10:11,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1304609860] [2020-10-14 00:10:11,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:10:11,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:11,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:11,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:11,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:11,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:11,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:11,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 00:10:11,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:10:11,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 651 [2020-10-14 00:10:11,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:11,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:11,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:10:11,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 00:10:11,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:10:11,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 00:10:11,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:10:11,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:11,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:11,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:11,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:10:11,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:11,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 00:10:11,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:11,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:11,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:10:11,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:11,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:10:11,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:10:11,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 00:10:11,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:11,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:11,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:11,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:11,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:11,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 00:10:11,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:11,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:11,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:10:11,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-14 00:10:11,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:10:11,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:10:11,928 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 00:10:11,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1304609860] [2020-10-14 00:10:11,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:10:11,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 00:10:11,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460247299] [2020-10-14 00:10:11,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 00:10:11,939 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:10:11,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 00:10:11,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:10:11,958 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-10-14 00:10:12,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:10:12,082 INFO L93 Difference]: Finished difference Result 65 states and 86 transitions. [2020-10-14 00:10:12,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 00:10:12,084 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-10-14 00:10:12,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:10:12,093 INFO L225 Difference]: With dead ends: 65 [2020-10-14 00:10:12,093 INFO L226 Difference]: Without dead ends: 32 [2020-10-14 00:10:12,098 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 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 00:10:12,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-14 00:10:12,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-10-14 00:10:12,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-14 00:10:12,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-10-14 00:10:12,166 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 22 [2020-10-14 00:10:12,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:10:12,168 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-10-14 00:10:12,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 00:10:12,168 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-10-14 00:10:12,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-14 00:10:12,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:10:12,170 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:10:12,171 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 00:10:12,171 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:10:12,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:10:12,172 INFO L82 PathProgramCache]: Analyzing trace with hash -277682356, now seen corresponding path program 1 times [2020-10-14 00:10:12,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:10:12,172 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1454347855] [2020-10-14 00:10:12,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:10:12,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:12,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:12,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:12,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:12,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:12,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:12,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 00:10:12,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:10:12,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 387 [2020-10-14 00:10:12,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:12,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:12,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:10:12,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:10:12,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:10:12,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:10:12,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:10:12,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:12,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:12,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:12,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:10:12,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:12,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:10:12,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:12,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:12,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:10:12,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:12,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:10:12,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:10:12,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 00:10:12,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:12,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:12,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:12,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:12,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:12,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:10:12,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:12,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:12,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:10:12,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:10:12,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:10:12,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:10:12,637 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 00:10:12,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1454347855] [2020-10-14 00:10:12,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:10:12,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 00:10:12,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669994374] [2020-10-14 00:10:12,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 00:10:12,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:10:12,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 00:10:12,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 00:10:12,641 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 4 states. [2020-10-14 00:10:12,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:10:12,735 INFO L93 Difference]: Finished difference Result 57 states and 65 transitions. [2020-10-14 00:10:12,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 00:10:12,736 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-10-14 00:10:12,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:10:12,737 INFO L225 Difference]: With dead ends: 57 [2020-10-14 00:10:12,737 INFO L226 Difference]: Without dead ends: 34 [2020-10-14 00:10:12,739 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 00:10:12,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-14 00:10:12,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-14 00:10:12,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-14 00:10:12,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-14 00:10:12,747 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 22 [2020-10-14 00:10:12,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:10:12,747 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-14 00:10:12,748 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 00:10:12,748 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-14 00:10:12,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-14 00:10:12,749 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:10:12,749 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:10:12,749 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 00:10:12,749 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:10:12,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:10:12,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1791807978, now seen corresponding path program 1 times [2020-10-14 00:10:12,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:10:12,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [837253551] [2020-10-14 00:10:12,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:10:12,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:12,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:12,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:12,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:12,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:13,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:13,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 00:10:13,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:10:13,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 493 [2020-10-14 00:10:13,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:13,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:13,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 00:10:13,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:10:13,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 00:10:13,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:10:13,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:10:13,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:13,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:13,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:13,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:10:13,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:13,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:10:13,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:13,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:13,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:10:13,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:13,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:10:13,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:10:13,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 00:10:13,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:13,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:13,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:13,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:13,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:13,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 00:10:13,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:13,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:13,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:10:13,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:13,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:10:13,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:10:13,336 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 00:10:13,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [837253551] [2020-10-14 00:10:13,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:10:13,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 00:10:13,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849636790] [2020-10-14 00:10:13,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:10:13,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:10:13,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:10:13,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:10:13,339 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 5 states. [2020-10-14 00:10:13,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:10:13,485 INFO L93 Difference]: Finished difference Result 50 states and 56 transitions. [2020-10-14 00:10:13,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 00:10:13,485 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-10-14 00:10:13,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:10:13,490 INFO L225 Difference]: With dead ends: 50 [2020-10-14 00:10:13,490 INFO L226 Difference]: Without dead ends: 39 [2020-10-14 00:10:13,491 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 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 00:10:13,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-14 00:10:13,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 34. [2020-10-14 00:10:13,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-14 00:10:13,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-10-14 00:10:13,504 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 24 [2020-10-14 00:10:13,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:10:13,509 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-10-14 00:10:13,510 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:10:13,510 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-10-14 00:10:13,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-14 00:10:13,511 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:10:13,511 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:10:13,511 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 00:10:13,511 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:10:13,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:10:13,512 INFO L82 PathProgramCache]: Analyzing trace with hash 657216618, now seen corresponding path program 1 times [2020-10-14 00:10:13,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:10:13,516 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [672649399] [2020-10-14 00:10:13,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:10:13,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:13,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:13,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:13,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:13,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 00:10:13,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:10:13,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 423 [2020-10-14 00:10:13,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:13,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:13,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 00:10:13,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:10:13,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 00:10:13,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:10:14,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:10:14,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:14,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:14,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:14,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:10:14,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:14,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:10:14,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:14,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:14,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:10:14,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:14,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:10:14,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:10:14,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 00:10:14,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:14,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:14,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:14,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:14,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:14,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:10:14,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:14,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:14,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:10:14,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:10:14,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:10:14,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:10:14,040 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 00:10:14,042 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [672649399] [2020-10-14 00:10:14,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:10:14,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:10:14,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457515887] [2020-10-14 00:10:14,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:10:14,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:10:14,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:10:14,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:10:14,047 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 5 states. [2020-10-14 00:10:14,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:10:14,232 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2020-10-14 00:10:14,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:10:14,233 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2020-10-14 00:10:14,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:10:14,234 INFO L225 Difference]: With dead ends: 60 [2020-10-14 00:10:14,234 INFO L226 Difference]: Without dead ends: 36 [2020-10-14 00:10:14,235 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:10:14,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-14 00:10:14,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-10-14 00:10:14,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-14 00:10:14,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2020-10-14 00:10:14,253 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 29 [2020-10-14 00:10:14,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:10:14,253 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-10-14 00:10:14,254 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:10:14,254 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2020-10-14 00:10:14,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-14 00:10:14,257 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:10:14,257 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:10:14,258 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 00:10:14,258 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:10:14,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:10:14,258 INFO L82 PathProgramCache]: Analyzing trace with hash -709829620, now seen corresponding path program 2 times [2020-10-14 00:10:14,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:10:14,259 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1158916220] [2020-10-14 00:10:14,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:10:14,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:14,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:14,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:14,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:14,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-14 00:10:14,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:10:14,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 661 [2020-10-14 00:10:14,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:14,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:14,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 00:10:14,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-14 00:10:14,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 00:10:14,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:10:15,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:10:15,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:15,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:15,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:15,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:10:15,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:15,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:10:15,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:15,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:15,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:10:15,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:15,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:10:15,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 00:10:15,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 00:10:15,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:10:15,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:10:15,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:10:15,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:10:15,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:10:15,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:10:15,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:10:15,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:10:15,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:10:15,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:10:15,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:10:15,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 00:10:15,217 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 00:10:15,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1158916220] [2020-10-14 00:10:15,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:10:15,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 00:10:15,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862663972] [2020-10-14 00:10:15,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 00:10:15,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:10:15,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 00:10:15,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-14 00:10:15,224 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 10 states. [2020-10-14 00:10:15,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:10:15,565 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2020-10-14 00:10:15,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 00:10:15,566 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2020-10-14 00:10:15,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:10:15,567 INFO L225 Difference]: With dead ends: 63 [2020-10-14 00:10:15,567 INFO L226 Difference]: Without dead ends: 61 [2020-10-14 00:10:15,568 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2020-10-14 00:10:15,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-14 00:10:15,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 49. [2020-10-14 00:10:15,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-14 00:10:15,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2020-10-14 00:10:15,578 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 31 [2020-10-14 00:10:15,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:10:15,579 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2020-10-14 00:10:15,579 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 00:10:15,579 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2020-10-14 00:10:15,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-14 00:10:15,580 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:10:15,580 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:10:15,581 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 00:10:15,581 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:10:15,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:10:15,581 INFO L82 PathProgramCache]: Analyzing trace with hash -8765042, now seen corresponding path program 1 times [2020-10-14 00:10:15,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:10:15,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1993095554] [2020-10-14 00:10:15,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:10:15,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-14 00:10:15,600 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-14 00:10:15,601 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 00:10:15,605 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 00:10:15,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 12:10:15 BoogieIcfgContainer [2020-10-14 00:10:15,625 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 00:10:15,628 INFO L168 Benchmark]: Toolchain (without parser) took 5547.31 ms. Allocated memory was 146.8 MB in the beginning and 282.1 MB in the end (delta: 135.3 MB). Free memory was 102.6 MB in the beginning and 170.4 MB in the end (delta: -67.8 MB). Peak memory consumption was 67.4 MB. Max. memory is 7.1 GB. [2020-10-14 00:10:15,629 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 146.8 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-10-14 00:10:15,630 INFO L168 Benchmark]: CACSL2BoogieTranslator took 371.96 ms. Allocated memory was 146.8 MB in the beginning and 202.9 MB in the end (delta: 56.1 MB). Free memory was 102.4 MB in the beginning and 181.5 MB in the end (delta: -79.1 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. [2020-10-14 00:10:15,631 INFO L168 Benchmark]: Boogie Preprocessor took 43.44 ms. Allocated memory is still 202.9 MB. Free memory was 181.5 MB in the beginning and 179.1 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-10-14 00:10:15,632 INFO L168 Benchmark]: RCFGBuilder took 433.04 ms. Allocated memory is still 202.9 MB. Free memory was 179.1 MB in the beginning and 161.1 MB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 7.1 GB. [2020-10-14 00:10:15,633 INFO L168 Benchmark]: TraceAbstraction took 4691.02 ms. Allocated memory was 202.9 MB in the beginning and 282.1 MB in the end (delta: 79.2 MB). Free memory was 161.1 MB in the beginning and 170.4 MB in the end (delta: -9.3 MB). Peak memory consumption was 69.9 MB. Max. memory is 7.1 GB. [2020-10-14 00:10:15,637 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 146.8 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 371.96 ms. Allocated memory was 146.8 MB in the beginning and 202.9 MB in the end (delta: 56.1 MB). Free memory was 102.4 MB in the beginning and 181.5 MB in the end (delta: -79.1 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 43.44 ms. Allocated memory is still 202.9 MB. Free memory was 181.5 MB in the beginning and 179.1 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 433.04 ms. Allocated memory is still 202.9 MB. Free memory was 179.1 MB in the beginning and 161.1 MB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4691.02 ms. Allocated memory was 202.9 MB in the beginning and 282.1 MB in the end (delta: 79.2 MB). Free memory was 161.1 MB in the beginning and 170.4 MB in the end (delta: -9.3 MB). Peak memory consumption was 69.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L10] int SIZE; [L12] const int MAX = 100000; [L16] SIZE = __VERIFIER_nondet_int() [L17] COND TRUE SIZE > 1 && SIZE < MAX [L19] int i; [L20] int *a = malloc(sizeof(int)*SIZE); [L22] i = 0 [L22] COND TRUE i < SIZE [L24] a[i] = __VERIFIER_nondet_int() [L22] i++ [L22] COND TRUE i < SIZE [L24] a[i] = __VERIFIER_nondet_int() [L22] i++ [L22] COND FALSE !(i < SIZE) [L27] COND FALSE !(SIZE % 2 != 0) [L29] CALL assume_abort_if_not(SIZE % 2 == 0) [L4] COND FALSE !(!cond) [L29] RET assume_abort_if_not(SIZE % 2 == 0) [L30] i = 1 [L30] COND TRUE i <= SIZE/2 [L32] EXPR a[2*i-2] [L32] COND FALSE !(a[2*i-2] > i) [L36] EXPR a[2*i-1] [L36] COND TRUE a[2*i-1] > i [L38] a[2*i-1] = 2*i-1 [L30] i++ [L30] COND FALSE !(i <= SIZE/2) [L42] i = 0 [L42] COND TRUE i < SIZE [L44] EXPR a[i] [L44] CALL __VERIFIER_assert( a[i] <= i ) [L6] COND TRUE !(cond) [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.6s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 151 SDtfs, 109 SDslu, 122 SDs, 0 SdLazy, 424 SolverSat, 38 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 51 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred in iteration=5, 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, 5 MinimizatonAttempts, 18 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 159 NumberOfCodeBlocks, 159 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 123 ConstructedInterpolants, 0 QuantifiedInterpolants, 9130 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 6/8 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 incorrect! Received shutdown request...