/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=BIGGEST --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-fpi/res1f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 10:11:47,720 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 10:11:47,723 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 10:11:47,770 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 10:11:47,770 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 10:11:47,782 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 10:11:47,783 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 10:11:47,788 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 10:11:47,791 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 10:11:47,793 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 10:11:47,794 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 10:11:47,797 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 10:11:47,797 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 10:11:47,801 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 10:11:47,803 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 10:11:47,806 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 10:11:47,807 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 10:11:47,809 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 10:11:47,811 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 10:11:47,818 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 10:11:47,821 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 10:11:47,822 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 10:11:47,823 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 10:11:47,824 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 10:11:47,828 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 10:11:47,829 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 10:11:47,829 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 10:11:47,831 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 10:11:47,832 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 10:11:47,834 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 10:11:47,834 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 10:11:47,835 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 10:11:47,836 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 10:11:47,836 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 10:11:47,838 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 10:11:47,838 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 10:11:47,839 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 10:11:47,839 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 10:11:47,839 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 10:11:47,840 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 10:11:47,841 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 10:11:47,842 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 [2020-10-12 10:11:47,884 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 10:11:47,885 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 10:11:47,886 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 10:11:47,886 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 10:11:47,886 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 10:11:47,887 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 10:11:47,887 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 10:11:47,888 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 10:11:47,888 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 10:11:47,888 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 10:11:47,889 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 10:11:47,889 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 10:11:47,890 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 10:11:47,890 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 10:11:47,890 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 10:11:47,890 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 10:11:47,891 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 10:11:47,891 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 10:11:47,891 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 10:11:47,891 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 10:11:47,891 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 10:11:47,892 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 10:11:47,892 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 10:11:47,892 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 10:11:47,892 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 10:11:47,892 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 10:11:47,893 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 10:11:47,893 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 10:11:47,893 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 10:11:47,893 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 10:11:48,202 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 10:11:48,215 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 10:11:48,219 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 10:11:48,220 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 10:11:48,221 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 10:11:48,222 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/res1f.c [2020-10-12 10:11:48,290 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/06a6fdad6/2e66214f25d64b86b28bb9c50b47cdd2/FLAGdff0cd577 [2020-10-12 10:11:48,796 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 10:11:48,797 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/res1f.c [2020-10-12 10:11:48,805 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/06a6fdad6/2e66214f25d64b86b28bb9c50b47cdd2/FLAGdff0cd577 [2020-10-12 10:11:49,120 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/06a6fdad6/2e66214f25d64b86b28bb9c50b47cdd2 [2020-10-12 10:11:49,130 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 10:11:49,131 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 10:11:49,132 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 10:11:49,133 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 10:11:49,136 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 10:11:49,137 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 10:11:49" (1/1) ... [2020-10-12 10:11:49,140 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@434f45a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:11:49, skipping insertion in model container [2020-10-12 10:11:49,140 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 10:11:49" (1/1) ... [2020-10-12 10:11:49,147 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 10:11:49,168 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 10:11:49,363 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 10:11:49,373 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 10:11:49,398 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 10:11:49,416 INFO L208 MainTranslator]: Completed translation [2020-10-12 10:11:49,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:11:49 WrapperNode [2020-10-12 10:11:49,416 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 10:11:49,417 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 10:11:49,418 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 10:11:49,418 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 10:11:49,513 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:11:49" (1/1) ... [2020-10-12 10:11:49,514 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:11:49" (1/1) ... [2020-10-12 10:11:49,533 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:11:49" (1/1) ... [2020-10-12 10:11:49,534 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:11:49" (1/1) ... [2020-10-12 10:11:49,545 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:11:49" (1/1) ... [2020-10-12 10:11:49,555 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:11:49" (1/1) ... [2020-10-12 10:11:49,557 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:11:49" (1/1) ... [2020-10-12 10:11:49,559 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 10:11:49,560 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 10:11:49,560 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 10:11:49,560 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 10:11:49,561 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:11:49" (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 [2020-10-12 10:11:49,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 10:11:49,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 10:11:49,626 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 10:11:49,626 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-12 10:11:49,626 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 10:11:49,626 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 10:11:49,626 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 10:11:49,627 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 10:11:49,628 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-12 10:11:49,628 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 10:11:49,628 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-12 10:11:49,628 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 10:11:49,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 10:11:49,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-12 10:11:49,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 10:11:49,630 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 10:11:49,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 10:11:49,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 10:11:49,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 10:11:49,903 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 10:11:49,903 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-12 10:11:49,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 10:11:49 BoogieIcfgContainer [2020-10-12 10:11:49,908 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 10:11:49,909 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 10:11:49,910 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 10:11:49,914 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 10:11:49,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 10:11:49" (1/3) ... [2020-10-12 10:11:49,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77f77f3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 10:11:49, skipping insertion in model container [2020-10-12 10:11:49,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:11:49" (2/3) ... [2020-10-12 10:11:49,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77f77f3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 10:11:49, skipping insertion in model container [2020-10-12 10:11:49,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 10:11:49" (3/3) ... [2020-10-12 10:11:49,920 INFO L109 eAbstractionObserver]: Analyzing ICFG res1f.c [2020-10-12 10:11:49,936 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 10:11:49,943 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 10:11:49,963 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 10:11:50,010 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 10:11:50,010 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 10:11:50,010 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 10:11:50,010 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 10:11:50,011 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 10:11:50,011 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 10:11:50,011 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 10:11:50,011 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 10:11:50,032 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-10-12 10:11:50,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-12 10:11:50,040 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:11:50,041 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] [2020-10-12 10:11:50,041 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:11:50,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:11:50,049 INFO L82 PathProgramCache]: Analyzing trace with hash 1562148239, now seen corresponding path program 1 times [2020-10-12 10:11:50,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:11:50,059 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [541356973] [2020-10-12 10:11:50,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:11:50,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:11:50,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:11:50,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:11:50,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:11:50,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:11:50,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:11:51,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:11:51,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:11:51,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-12 10:11:51,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 10:11:51,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1269 [2020-10-12 10:11:51,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:11:51,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 10:11:51,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 10:11:51,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 10:11:51,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 10:11:51,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:11:51,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:11:51,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:11:51,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:11:51,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:11:51,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:11:51,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 10:11:51,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:11:51,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:11:51,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:11:51,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:11:51,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 10:11:51,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 10:11:51,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:11:51,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:11:51,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:11:51,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:11:51,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:11:51,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:11:51,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 10:11:51,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:11:51,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:11:51,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:11:51,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:11:51,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:11:51,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:11:51,729 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [541356973] [2020-10-12 10:11:51,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:11:51,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 10:11:51,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52305831] [2020-10-12 10:11:51,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 10:11:51,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:11:51,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 10:11:51,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-12 10:11:51,757 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 8 states. [2020-10-12 10:11:52,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:11:52,064 INFO L93 Difference]: Finished difference Result 78 states and 102 transitions. [2020-10-12 10:11:52,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 10:11:52,066 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2020-10-12 10:11:52,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:11:52,075 INFO L225 Difference]: With dead ends: 78 [2020-10-12 10:11:52,075 INFO L226 Difference]: Without dead ends: 33 [2020-10-12 10:11:52,079 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-12 10:11:52,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-12 10:11:52,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-10-12 10:11:52,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-12 10:11:52,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-12 10:11:52,121 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 25 [2020-10-12 10:11:52,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:11:52,122 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-12 10:11:52,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 10:11:52,123 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-12 10:11:52,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-12 10:11:52,124 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:11:52,124 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] [2020-10-12 10:11:52,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 10:11:52,125 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:11:52,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:11:52,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1783482005, now seen corresponding path program 1 times [2020-10-12 10:11:52,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:11:52,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1753200214] [2020-10-12 10:11:52,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:11:52,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:11:52,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:11:52,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:11:52,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:11:52,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:11:52,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:11:52,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:11:52,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:11:52,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-12 10:11:52,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 10:11:52,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 735 [2020-10-12 10:11:52,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:11:52,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 10:11:52,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-12 10:11:52,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:11:52,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:11:52,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:11:52,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:11:52,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:11:52,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:11:52,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:11:52,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:11:52,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:11:52,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:11:52,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:11:52,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:11:52,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:11:52,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:11:52,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 10:11:52,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:11:52,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:11:52,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:11:52,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:11:52,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:11:52,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:11:52,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:11:52,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:11:52,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:11:52,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:11:52,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:11:52,938 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:11:52,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1753200214] [2020-10-12 10:11:52,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:11:52,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 10:11:52,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835400812] [2020-10-12 10:11:52,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 10:11:52,942 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:11:52,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 10:11:52,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 10:11:52,943 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 6 states. [2020-10-12 10:11:53,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:11:53,136 INFO L93 Difference]: Finished difference Result 67 states and 78 transitions. [2020-10-12 10:11:53,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 10:11:53,137 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-10-12 10:11:53,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:11:53,138 INFO L225 Difference]: With dead ends: 67 [2020-10-12 10:11:53,139 INFO L226 Difference]: Without dead ends: 44 [2020-10-12 10:11:53,140 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-12 10:11:53,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-12 10:11:53,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 33. [2020-10-12 10:11:53,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-12 10:11:53,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2020-10-12 10:11:53,149 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 27 [2020-10-12 10:11:53,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:11:53,149 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2020-10-12 10:11:53,149 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 10:11:53,150 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2020-10-12 10:11:53,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-12 10:11:53,151 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:11:53,151 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, 1, 1] [2020-10-12 10:11:53,151 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 10:11:53,151 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:11:53,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:11:53,152 INFO L82 PathProgramCache]: Analyzing trace with hash -1703711335, now seen corresponding path program 1 times [2020-10-12 10:11:53,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:11:53,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1235049733] [2020-10-12 10:11:53,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:11:53,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:11:53,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:11:53,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:11:53,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:11:53,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:11:53,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:11:54,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:11:54,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:11:54,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:11:54,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-12 10:11:54,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 10:11:54,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1642 [2020-10-12 10:11:54,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:11:54,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 10:11:54,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-12 10:11:54,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 10:11:54,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:11:55,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:11:55,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:11:55,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:11:55,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:11:55,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:11:55,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:11:55,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 10:11:55,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:11:55,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:11:55,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:11:55,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:11:55,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:11:55,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 10:11:55,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:11:55,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:11:55,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:11:55,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:11:55,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:11:55,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:11:55,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:11:55,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:11:55,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:11:55,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:11:55,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:11:55,478 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:11:55,479 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1235049733] [2020-10-12 10:11:55,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:11:55,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 10:11:55,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913226307] [2020-10-12 10:11:55,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 10:11:55,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:11:55,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 10:11:55,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-10-12 10:11:55,490 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand 15 states. [2020-10-12 10:11:56,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:11:56,588 INFO L93 Difference]: Finished difference Result 56 states and 63 transitions. [2020-10-12 10:11:56,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 10:11:56,588 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 31 [2020-10-12 10:11:56,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:11:56,590 INFO L225 Difference]: With dead ends: 56 [2020-10-12 10:11:56,591 INFO L226 Difference]: Without dead ends: 50 [2020-10-12 10:11:56,592 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=120, Invalid=432, Unknown=0, NotChecked=0, Total=552 [2020-10-12 10:11:56,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-12 10:11:56,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 37. [2020-10-12 10:11:56,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-12 10:11:56,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-12 10:11:56,610 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 31 [2020-10-12 10:11:56,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:11:56,611 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-12 10:11:56,611 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 10:11:56,611 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-12 10:11:56,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-12 10:11:56,612 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:11:56,613 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, 1, 1, 1, 1] [2020-10-12 10:11:56,613 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 10:11:56,613 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:11:56,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:11:56,613 INFO L82 PathProgramCache]: Analyzing trace with hash -1815337701, now seen corresponding path program 1 times [2020-10-12 10:11:56,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:11:56,614 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1669187513] [2020-10-12 10:11:56,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:11:56,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-12 10:11:56,634 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-12 10:11:56,634 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-12 10:11:56,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 10:11:56,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 10:11:56 BoogieIcfgContainer [2020-10-12 10:11:56,676 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 10:11:56,684 INFO L168 Benchmark]: Toolchain (without parser) took 7546.32 ms. Allocated memory was 140.5 MB in the beginning and 307.2 MB in the end (delta: 166.7 MB). Free memory was 102.8 MB in the beginning and 265.1 MB in the end (delta: -162.3 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. [2020-10-12 10:11:56,685 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 140.5 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-10-12 10:11:56,686 INFO L168 Benchmark]: CACSL2BoogieTranslator took 284.54 ms. Allocated memory is still 140.5 MB. Free memory was 102.6 MB in the beginning and 91.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. [2020-10-12 10:11:56,690 INFO L168 Benchmark]: Boogie Preprocessor took 142.37 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 91.9 MB in the beginning and 181.3 MB in the end (delta: -89.4 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-10-12 10:11:56,693 INFO L168 Benchmark]: RCFGBuilder took 348.09 ms. Allocated memory is still 203.9 MB. Free memory was 181.3 MB in the beginning and 162.5 MB in the end (delta: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. [2020-10-12 10:11:56,694 INFO L168 Benchmark]: TraceAbstraction took 6766.21 ms. Allocated memory was 203.9 MB in the beginning and 307.2 MB in the end (delta: 103.3 MB). Free memory was 162.5 MB in the beginning and 265.1 MB in the end (delta: -102.6 MB). Peak memory consumption was 681.7 kB. Max. memory is 7.1 GB. [2020-10-12 10:11:56,699 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 140.5 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 284.54 ms. Allocated memory is still 140.5 MB. Free memory was 102.6 MB in the beginning and 91.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 142.37 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 91.9 MB in the beginning and 181.3 MB in the end (delta: -89.4 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 348.09 ms. Allocated memory is still 203.9 MB. Free memory was 181.3 MB in the beginning and 162.5 MB in the end (delta: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6766.21 ms. Allocated memory was 203.9 MB in the beginning and 307.2 MB in the end (delta: 103.3 MB). Free memory was 162.5 MB in the beginning and 265.1 MB in the end (delta: -102.6 MB). Peak memory consumption was 681.7 kB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int N; [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L11] COND FALSE !(!cond) [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L25] int i; [L26] long long sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L28] int *b = malloc(sizeof(int)*N); [L30] sum[0] = 1 [L31] i=0 [L31] COND TRUE i