/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 SingleStatement --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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/s2iff.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 20:41:18,965 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 20:41:18,968 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 20:41:18,996 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 20:41:18,996 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 20:41:18,998 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 20:41:18,999 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 20:41:19,001 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 20:41:19,003 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 20:41:19,004 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 20:41:19,005 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 20:41:19,007 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 20:41:19,007 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 20:41:19,008 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 20:41:19,009 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 20:41:19,011 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 20:41:19,012 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 20:41:19,013 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 20:41:19,015 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 20:41:19,018 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 20:41:19,019 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 20:41:19,021 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 20:41:19,022 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 20:41:19,023 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 20:41:19,026 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 20:41:19,027 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 20:41:19,027 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 20:41:19,028 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 20:41:19,029 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 20:41:19,033 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 20:41:19,033 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 20:41:19,034 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 20:41:19,035 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 20:41:19,036 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 20:41:19,039 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 20:41:19,039 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 20:41:19,040 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 20:41:19,041 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 20:41:19,041 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 20:41:19,042 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 20:41:19,043 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 20:41:19,044 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 [2020-09-24 20:41:19,104 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 20:41:19,104 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 20:41:19,106 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 20:41:19,106 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 20:41:19,106 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 20:41:19,106 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 20:41:19,107 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 20:41:19,109 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 20:41:19,109 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 20:41:19,109 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 20:41:19,110 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 20:41:19,110 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 20:41:19,110 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 20:41:19,110 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 20:41:19,110 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 20:41:19,111 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 20:41:19,111 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 20:41:19,111 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 20:41:19,111 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 20:41:19,111 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 20:41:19,113 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 20:41:19,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:41:19,113 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 20:41:19,113 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 20:41:19,114 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 20:41:19,114 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 20:41:19,114 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 20:41:19,114 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 20:41:19,114 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 20:41:19,115 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 -> SingleStatement 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; 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; 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; 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; 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; [2020-09-24 20:41:19,758 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 20:41:19,775 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 20:41:19,779 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 20:41:19,781 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 20:41:19,782 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 20:41:19,783 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s2iff.c [2020-09-24 20:41:19,854 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3237201fe/ee52e880d38b4ff8a0cf73a53df9778b/FLAGd7c1a25a7 [2020-09-24 20:41:20,413 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 20:41:20,414 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/s2iff.c [2020-09-24 20:41:20,422 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3237201fe/ee52e880d38b4ff8a0cf73a53df9778b/FLAGd7c1a25a7 [2020-09-24 20:41:20,744 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3237201fe/ee52e880d38b4ff8a0cf73a53df9778b [2020-09-24 20:41:20,759 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 20:41:20,765 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 20:41:20,767 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 20:41:20,767 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 20:41:20,771 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 20:41:20,772 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:41:20" (1/1) ... [2020-09-24 20:41:20,777 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78a0d118 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:20, skipping insertion in model container [2020-09-24 20:41:20,777 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:41:20" (1/1) ... [2020-09-24 20:41:20,787 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 20:41:20,813 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 20:41:21,061 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:41:21,074 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 20:41:21,102 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:41:21,124 INFO L208 MainTranslator]: Completed translation [2020-09-24 20:41:21,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:21 WrapperNode [2020-09-24 20:41:21,125 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 20:41:21,126 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 20:41:21,126 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 20:41:21,126 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 20:41:21,235 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:21" (1/1) ... [2020-09-24 20:41:21,235 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:21" (1/1) ... [2020-09-24 20:41:21,245 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:21" (1/1) ... [2020-09-24 20:41:21,245 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:21" (1/1) ... [2020-09-24 20:41:21,255 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:21" (1/1) ... [2020-09-24 20:41:21,262 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:21" (1/1) ... [2020-09-24 20:41:21,264 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:21" (1/1) ... [2020-09-24 20:41:21,267 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 20:41:21,267 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 20:41:21,267 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 20:41:21,268 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 20:41:21,269 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:21" (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 [2020-09-24 20:41:21,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 20:41:21,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 20:41:21,350 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 20:41:21,350 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 20:41:21,350 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 20:41:21,350 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 20:41:21,351 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 20:41:21,351 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 20:41:21,351 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 20:41:21,351 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 20:41:21,351 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 20:41:21,352 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 20:41:21,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 20:41:21,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 20:41:21,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 20:41:21,352 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 20:41:21,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 20:41:21,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 20:41:21,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 20:41:21,645 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 20:41:21,646 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-24 20:41:21,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:41:21 BoogieIcfgContainer [2020-09-24 20:41:21,654 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 20:41:21,655 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 20:41:21,656 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 20:41:21,659 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 20:41:21,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:41:20" (1/3) ... [2020-09-24 20:41:21,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57e92381 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:41:21, skipping insertion in model container [2020-09-24 20:41:21,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:21" (2/3) ... [2020-09-24 20:41:21,662 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57e92381 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:41:21, skipping insertion in model container [2020-09-24 20:41:21,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:41:21" (3/3) ... [2020-09-24 20:41:21,664 INFO L109 eAbstractionObserver]: Analyzing ICFG s2iff.c [2020-09-24 20:41:21,678 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 20:41:21,701 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 20:41:21,750 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 20:41:21,789 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 20:41:21,789 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 20:41:21,789 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 20:41:21,789 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 20:41:21,790 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 20:41:21,790 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 20:41:21,790 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 20:41:21,790 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 20:41:21,817 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2020-09-24 20:41:21,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-24 20:41:21,825 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:41:21,826 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] [2020-09-24 20:41:21,827 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:41:21,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:41:21,834 INFO L82 PathProgramCache]: Analyzing trace with hash 171473808, now seen corresponding path program 1 times [2020-09-24 20:41:21,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:41:21,843 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1047278547] [2020-09-24 20:41:21,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:41:21,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:41:22,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:22,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:22,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:41:22,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-24 20:41:22,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:41:22,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 318 [2020-09-24 20:41:22,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:41:22,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:41:22,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-24 20:41:22,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:41:22,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 20:41:22,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:41:22,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:41:22,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:22,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:41:22,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:41:22,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:41:22,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 20:41:22,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:41:22,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:41:22,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:41:22,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:41:22,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 20:41:22,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 20:41:22,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:41:22,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:22,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:41:22,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 20:41:22,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:41:22,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 20:41:22,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:41:22,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:41:22,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:41:22,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:41:22,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:41:22,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:41:22,486 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1047278547] [2020-09-24 20:41:22,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:41:22,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 20:41:22,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627147225] [2020-09-24 20:41:22,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 20:41:22,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:41:22,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 20:41:22,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:41:22,522 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 3 states. [2020-09-24 20:41:22,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:41:22,714 INFO L93 Difference]: Finished difference Result 113 states and 126 transitions. [2020-09-24 20:41:22,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 20:41:22,717 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-09-24 20:41:22,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:41:22,733 INFO L225 Difference]: With dead ends: 113 [2020-09-24 20:41:22,733 INFO L226 Difference]: Without dead ends: 53 [2020-09-24 20:41:22,739 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:41:22,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-09-24 20:41:22,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-09-24 20:41:22,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-24 20:41:22,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2020-09-24 20:41:22,811 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 31 [2020-09-24 20:41:22,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:41:22,814 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2020-09-24 20:41:22,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 20:41:22,815 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2020-09-24 20:41:22,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-24 20:41:22,818 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:41:22,819 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] [2020-09-24 20:41:22,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 20:41:22,820 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:41:22,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:41:22,821 INFO L82 PathProgramCache]: Analyzing trace with hash 921692051, now seen corresponding path program 1 times [2020-09-24 20:41:22,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:41:22,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [479160309] [2020-09-24 20:41:22,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:41:22,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:41:22,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:23,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:23,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:41:23,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-24 20:41:23,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:41:23,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 375 [2020-09-24 20:41:23,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:41:23,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:41:23,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 20:41:23,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 20:41:23,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:41:23,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:41:23,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:41:23,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:23,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:41:23,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:41:23,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:41:23,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 20:41:23,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:41:23,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:41:23,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:41:23,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:41:23,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:41:23,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 20:41:23,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:41:23,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:23,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:41:23,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 20:41:23,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:41:23,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 20:41:23,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:41:23,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:41:23,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:41:23,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:41:23,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:41:23,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:41:23,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [479160309] [2020-09-24 20:41:23,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:41:23,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 20:41:23,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669998918] [2020-09-24 20:41:23,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 20:41:23,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:41:23,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 20:41:23,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:41:23,398 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand 5 states. [2020-09-24 20:41:23,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:41:23,673 INFO L93 Difference]: Finished difference Result 80 states and 85 transitions. [2020-09-24 20:41:23,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 20:41:23,674 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-09-24 20:41:23,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:41:23,677 INFO L225 Difference]: With dead ends: 80 [2020-09-24 20:41:23,678 INFO L226 Difference]: Without dead ends: 55 [2020-09-24 20:41:23,681 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 [2020-09-24 20:41:23,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-24 20:41:23,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-09-24 20:41:23,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-24 20:41:23,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2020-09-24 20:41:23,703 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 31 [2020-09-24 20:41:23,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:41:23,708 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 57 transitions. [2020-09-24 20:41:23,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 20:41:23,709 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2020-09-24 20:41:23,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-24 20:41:23,711 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:41:23,711 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:41:23,714 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 20:41:23,714 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:41:23,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:41:23,715 INFO L82 PathProgramCache]: Analyzing trace with hash -827220298, now seen corresponding path program 1 times [2020-09-24 20:41:23,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:41:23,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1000299462] [2020-09-24 20:41:23,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:41:23,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:41:23,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:24,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:24,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:25,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:25,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:26,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:26,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:27,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:27,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:28,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:41:28,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-24 20:41:28,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 20:41:28,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-24 20:41:28,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:41:28,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 20:41:28,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 20:41:28,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-24 20:41:28,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:41:29,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:41:29,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:41:29,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:29,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:41:29,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:41:29,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:41:29,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 20:41:29,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:41:29,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:41:29,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:41:29,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:41:29,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:41:29,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 20:41:29,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:41:29,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:29,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:41:29,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 20:41:29,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:41:29,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 20:41:29,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:41:29,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:41:29,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:41:29,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:41:29,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:41:29,888 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:41:29,889 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1000299462] [2020-09-24 20:41:29,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:41:29,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-24 20:41:29,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890159290] [2020-09-24 20:41:29,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-24 20:41:29,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:41:29,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-24 20:41:29,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2020-09-24 20:41:29,895 INFO L87 Difference]: Start difference. First operand 55 states and 57 transitions. Second operand 23 states. [2020-09-24 20:41:31,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:41:31,304 INFO L93 Difference]: Finished difference Result 81 states and 84 transitions. [2020-09-24 20:41:31,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-09-24 20:41:31,305 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 48 [2020-09-24 20:41:31,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:41:31,307 INFO L225 Difference]: With dead ends: 81 [2020-09-24 20:41:31,307 INFO L226 Difference]: Without dead ends: 75 [2020-09-24 20:41:31,308 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=370, Invalid=1700, Unknown=0, NotChecked=0, Total=2070 [2020-09-24 20:41:31,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-09-24 20:41:31,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 67. [2020-09-24 20:41:31,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-09-24 20:41:31,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 70 transitions. [2020-09-24 20:41:31,318 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 70 transitions. Word has length 48 [2020-09-24 20:41:31,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:41:31,318 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 70 transitions. [2020-09-24 20:41:31,319 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-24 20:41:31,319 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 70 transitions. [2020-09-24 20:41:31,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-24 20:41:31,320 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:41:31,321 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:41:31,321 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 20:41:31,321 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:41:31,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:41:31,322 INFO L82 PathProgramCache]: Analyzing trace with hash -1272927570, now seen corresponding path program 1 times [2020-09-24 20:41:31,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:41:31,322 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1929710758] [2020-09-24 20:41:31,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:41:31,338 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-09-24 20:41:31,338 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-09-24 20:41:31,339 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 20:41:31,345 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 20:41:31,370 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-09-24 20:41:31,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 08:41:31 BoogieIcfgContainer [2020-09-24 20:41:31,370 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 20:41:31,374 INFO L168 Benchmark]: Toolchain (without parser) took 10611.88 ms. Allocated memory was 146.3 MB in the beginning and 278.9 MB in the end (delta: 132.6 MB). Free memory was 102.8 MB in the beginning and 110.7 MB in the end (delta: -7.9 MB). Peak memory consumption was 124.8 MB. Max. memory is 7.1 GB. [2020-09-24 20:41:31,375 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 146.3 MB. Free memory was 120.9 MB in the beginning and 120.5 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-09-24 20:41:31,376 INFO L168 Benchmark]: CACSL2BoogieTranslator took 358.75 ms. Allocated memory is still 146.3 MB. Free memory was 102.3 MB in the beginning and 91.7 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2020-09-24 20:41:31,377 INFO L168 Benchmark]: Boogie Preprocessor took 141.24 ms. Allocated memory was 146.3 MB in the beginning and 201.9 MB in the end (delta: 55.6 MB). Free memory was 91.7 MB in the beginning and 179.1 MB in the end (delta: -87.3 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-09-24 20:41:31,378 INFO L168 Benchmark]: RCFGBuilder took 386.73 ms. Allocated memory is still 201.9 MB. Free memory was 179.1 MB in the beginning and 159.6 MB in the end (delta: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 7.1 GB. [2020-09-24 20:41:31,379 INFO L168 Benchmark]: TraceAbstraction took 9714.96 ms. Allocated memory was 201.9 MB in the beginning and 278.9 MB in the end (delta: 77.1 MB). Free memory was 159.6 MB in the beginning and 110.7 MB in the end (delta: 48.9 MB). Peak memory consumption was 126.0 MB. Max. memory is 7.1 GB. [2020-09-24 20:41:31,383 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 146.3 MB. Free memory was 120.9 MB in the beginning and 120.5 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 358.75 ms. Allocated memory is still 146.3 MB. Free memory was 102.3 MB in the beginning and 91.7 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 141.24 ms. Allocated memory was 146.3 MB in the beginning and 201.9 MB in the end (delta: 55.6 MB). Free memory was 91.7 MB in the beginning and 179.1 MB in the end (delta: -87.3 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 386.73 ms. Allocated memory is still 201.9 MB. Free memory was 179.1 MB in the beginning and 159.6 MB in the end (delta: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 9714.96 ms. Allocated memory was 201.9 MB in the beginning and 278.9 MB in the end (delta: 77.1 MB). Free memory was 159.6 MB in the beginning and 110.7 MB in the end (delta: 48.9 MB). Peak memory consumption was 126.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 13]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible 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); [L29] sum[0] = 1 [L30] i=0 [L30] COND TRUE i