/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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 language data_model -i ../../../trunk/examples/svcomp/array-fpi/brs3f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 03:50:22,645 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 03:50:22,648 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 03:50:22,681 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 03:50:22,681 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 03:50:22,683 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 03:50:22,684 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 03:50:22,687 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 03:50:22,689 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 03:50:22,690 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 03:50:22,691 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 03:50:22,693 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 03:50:22,693 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 03:50:22,694 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 03:50:22,696 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 03:50:22,697 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 03:50:22,698 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 03:50:22,699 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 03:50:22,701 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 03:50:22,703 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 03:50:22,705 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 03:50:22,707 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 03:50:22,708 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 03:50:22,709 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 03:50:22,712 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 03:50:22,713 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 03:50:22,713 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 03:50:22,714 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 03:50:22,715 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 03:50:22,720 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 03:50:22,721 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 03:50:22,724 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 03:50:22,725 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 03:50:22,726 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 03:50:22,729 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 03:50:22,729 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 03:50:22,730 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 03:50:22,731 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 03:50:22,731 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 03:50:22,740 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 03:50:22,742 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 03:50:22,744 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 [2020-10-29 03:50:22,777 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 03:50:22,777 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 03:50:22,779 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 03:50:22,779 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 03:50:22,779 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 03:50:22,780 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 03:50:22,780 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 03:50:22,780 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 03:50:22,781 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 03:50:22,781 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 03:50:22,781 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 03:50:22,781 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 03:50:22,782 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 03:50:22,782 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 03:50:22,782 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 03:50:22,782 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 03:50:22,782 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 03:50:22,783 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 03:50:22,783 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 03:50:22,783 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 03:50:22,783 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 03:50:22,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 03:50:22,784 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 03:50:22,784 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 03:50:22,785 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 03:50:22,785 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 03:50:22,785 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 03:50:22,785 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 03:50:22,786 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 03:50:22,786 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 03:50:23,176 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 03:50:23,206 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 03:50:23,209 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 03:50:23,210 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 03:50:23,211 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 03:50:23,212 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/brs3f.c [2020-10-29 03:50:23,297 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7de745ce2/ee79481cab5e4f58a6a9bb5f22ef5b77/FLAG9dfe8678a [2020-10-29 03:50:23,926 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 03:50:23,927 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/brs3f.c [2020-10-29 03:50:23,934 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7de745ce2/ee79481cab5e4f58a6a9bb5f22ef5b77/FLAG9dfe8678a [2020-10-29 03:50:24,303 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7de745ce2/ee79481cab5e4f58a6a9bb5f22ef5b77 [2020-10-29 03:50:24,309 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 03:50:24,318 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 03:50:24,322 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 03:50:24,323 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 03:50:24,327 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 03:50:24,328 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:50:24" (1/1) ... [2020-10-29 03:50:24,332 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c388ad8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:50:24, skipping insertion in model container [2020-10-29 03:50:24,332 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:50:24" (1/1) ... [2020-10-29 03:50:24,341 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 03:50:24,360 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 03:50:24,608 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:50:24,618 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 03:50:24,656 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:50:24,678 INFO L208 MainTranslator]: Completed translation [2020-10-29 03:50:24,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:50:24 WrapperNode [2020-10-29 03:50:24,679 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 03:50:24,680 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 03:50:24,680 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 03:50:24,681 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 03:50:24,694 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:50:24" (1/1) ... [2020-10-29 03:50:24,696 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:50:24" (1/1) ... [2020-10-29 03:50:24,718 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:50:24" (1/1) ... [2020-10-29 03:50:24,718 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:50:24" (1/1) ... [2020-10-29 03:50:24,739 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:50:24" (1/1) ... [2020-10-29 03:50:24,747 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:50:24" (1/1) ... [2020-10-29 03:50:24,749 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:50:24" (1/1) ... [2020-10-29 03:50:24,757 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 03:50:24,761 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 03:50:24,762 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 03:50:24,762 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 03:50:24,763 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:50:24" (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 [2020-10-29 03:50:24,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 03:50:24,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 03:50:24,853 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 03:50:24,854 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 03:50:24,854 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 03:50:24,854 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 03:50:24,855 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 03:50:24,855 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 03:50:24,855 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 03:50:24,855 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 03:50:24,856 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 03:50:24,857 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 03:50:24,857 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 03:50:24,857 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-29 03:50:24,857 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 03:50:24,858 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-29 03:50:24,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 03:50:24,858 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 03:50:24,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 03:50:24,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 03:50:24,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 03:50:24,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 03:50:25,281 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 03:50:25,281 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-29 03:50:25,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:50:25 BoogieIcfgContainer [2020-10-29 03:50:25,293 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 03:50:25,298 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 03:50:25,298 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 03:50:25,305 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 03:50:25,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 03:50:24" (1/3) ... [2020-10-29 03:50:25,306 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f830808 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:50:25, skipping insertion in model container [2020-10-29 03:50:25,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:50:24" (2/3) ... [2020-10-29 03:50:25,307 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f830808 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:50:25, skipping insertion in model container [2020-10-29 03:50:25,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:50:25" (3/3) ... [2020-10-29 03:50:25,309 INFO L111 eAbstractionObserver]: Analyzing ICFG brs3f.c [2020-10-29 03:50:25,322 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 03:50:25,326 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 03:50:25,340 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 03:50:25,366 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 03:50:25,367 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 03:50:25,367 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 03:50:25,367 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 03:50:25,367 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 03:50:25,367 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 03:50:25,368 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 03:50:25,368 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 03:50:25,385 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-10-29 03:50:25,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-29 03:50:25,391 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:50:25,391 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:50:25,392 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:50:25,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:50:25,398 INFO L82 PathProgramCache]: Analyzing trace with hash 288317380, now seen corresponding path program 1 times [2020-10-29 03:50:25,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:50:25,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1387937283] [2020-10-29 03:50:25,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:50:25,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:25,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:25,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:25,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:25,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:25,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 03:50:25,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:50:25,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 307 [2020-10-29 03:50:25,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:25,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:25,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:50:25,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 03:50:25,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:50:25,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 03:50:25,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:50:25,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:25,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:25,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:25,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:50:25,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:25,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 03:50:25,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:25,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:25,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:50:25,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:25,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:50:25,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:50:25,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:50:25,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:25,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:25,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:25,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:25,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:25,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:50:25,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:50:25,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:25,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:25,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:50:25,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:25,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:50:25,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:50:25,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:50:26,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1387937283] [2020-10-29 03:50:26,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:50:26,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 03:50:26,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396435349] [2020-10-29 03:50:26,013 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-29 03:50:26,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:50:26,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-29 03:50:26,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-29 03:50:26,033 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-10-29 03:50:26,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:50:26,153 INFO L93 Difference]: Finished difference Result 61 states and 77 transitions. [2020-10-29 03:50:26,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-29 03:50:26,155 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-10-29 03:50:26,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:50:26,163 INFO L225 Difference]: With dead ends: 61 [2020-10-29 03:50:26,163 INFO L226 Difference]: Without dead ends: 27 [2020-10-29 03:50:26,166 INFO L677 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 [2020-10-29 03:50:26,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-29 03:50:26,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-10-29 03:50:26,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-29 03:50:26,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2020-10-29 03:50:26,208 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 22 [2020-10-29 03:50:26,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:50:26,209 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2020-10-29 03:50:26,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-29 03:50:26,209 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2020-10-29 03:50:26,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-29 03:50:26,210 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:50:26,210 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:50:26,211 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 03:50:26,211 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:50:26,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:50:26,212 INFO L82 PathProgramCache]: Analyzing trace with hash 1231035376, now seen corresponding path program 1 times [2020-10-29 03:50:26,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:50:26,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1702022755] [2020-10-29 03:50:26,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:50:26,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:26,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:26,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:26,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:26,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 03:50:26,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:50:26,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 392 [2020-10-29 03:50:26,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:26,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:26,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 03:50:26,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:50:26,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 03:50:26,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-29 03:50:26,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:50:26,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:26,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:26,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:26,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:50:26,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:26,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 03:50:26,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:26,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:26,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:50:26,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:26,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:50:26,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:50:26,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:50:26,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:26,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:26,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:26,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:26,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:26,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 03:50:26,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:26,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:26,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:50:26,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:26,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:50:26,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:26,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:50:26,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1702022755] [2020-10-29 03:50:26,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:50:26,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 03:50:26,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292647975] [2020-10-29 03:50:26,811 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 03:50:26,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:50:26,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 03:50:26,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 03:50:26,814 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 5 states. [2020-10-29 03:50:27,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:50:27,016 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2020-10-29 03:50:27,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 03:50:27,017 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-10-29 03:50:27,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:50:27,018 INFO L225 Difference]: With dead ends: 40 [2020-10-29 03:50:27,019 INFO L226 Difference]: Without dead ends: 29 [2020-10-29 03:50:27,020 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 03:50:27,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-29 03:50:27,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-29 03:50:27,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-29 03:50:27,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-10-29 03:50:27,028 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 22 [2020-10-29 03:50:27,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:50:27,029 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-10-29 03:50:27,029 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 03:50:27,029 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-10-29 03:50:27,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-29 03:50:27,030 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:50:27,030 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:50:27,030 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 03:50:27,031 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:50:27,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:50:27,031 INFO L82 PathProgramCache]: Analyzing trace with hash -1214934215, now seen corresponding path program 1 times [2020-10-29 03:50:27,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:50:27,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1685773211] [2020-10-29 03:50:27,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:50:27,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:27,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:27,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:27,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:27,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:27,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 03:50:27,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:50:27,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 821 [2020-10-29 03:50:27,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:27,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:27,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:50:27,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:50:27,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 03:50:27,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:28,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:50:28,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:28,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:28,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:28,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:50:28,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:28,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:50:28,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:28,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:28,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:50:28,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:28,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:50:28,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:28,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:50:28,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:28,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:28,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:28,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:28,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:28,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:50:28,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:28,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:28,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:50:28,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:28,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:50:28,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:50:28,085 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:50:28,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1685773211] [2020-10-29 03:50:28,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:50:28,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 03:50:28,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957790574] [2020-10-29 03:50:28,086 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 03:50:28,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:50:28,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 03:50:28,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:50:28,088 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 10 states. [2020-10-29 03:50:28,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:50:28,485 INFO L93 Difference]: Finished difference Result 69 states and 83 transitions. [2020-10-29 03:50:28,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 03:50:28,486 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 28 [2020-10-29 03:50:28,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:50:28,487 INFO L225 Difference]: With dead ends: 69 [2020-10-29 03:50:28,487 INFO L226 Difference]: Without dead ends: 57 [2020-10-29 03:50:28,488 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:50:28,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-29 03:50:28,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 42. [2020-10-29 03:50:28,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-29 03:50:28,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 51 transitions. [2020-10-29 03:50:28,498 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 51 transitions. Word has length 28 [2020-10-29 03:50:28,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:50:28,499 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 51 transitions. [2020-10-29 03:50:28,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 03:50:28,499 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 51 transitions. [2020-10-29 03:50:28,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-29 03:50:28,500 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:50:28,500 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] [2020-10-29 03:50:28,500 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 03:50:28,501 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:50:28,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:50:28,501 INFO L82 PathProgramCache]: Analyzing trace with hash -1894992585, now seen corresponding path program 1 times [2020-10-29 03:50:28,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:50:28,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1595440886] [2020-10-29 03:50:28,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:50:28,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:28,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:28,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:28,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:29,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:29,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 03:50:29,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:50:29,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 704 [2020-10-29 03:50:29,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:29,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:29,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 03:50:29,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:50:29,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 03:50:29,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:29,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:50:29,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:29,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:29,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:29,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:50:29,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:29,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:50:29,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:29,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:29,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:50:29,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:29,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:50:29,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 03:50:29,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:50:29,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:29,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:29,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:29,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:29,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:29,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:50:29,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:29,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:29,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:50:29,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:29,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:50:29,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:50:29,373 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 03:50:29,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1595440886] [2020-10-29 03:50:29,374 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:50:29,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 03:50:29,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651827134] [2020-10-29 03:50:29,375 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 03:50:29,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:50:29,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 03:50:29,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-29 03:50:29,377 INFO L87 Difference]: Start difference. First operand 42 states and 51 transitions. Second operand 8 states. [2020-10-29 03:50:29,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:50:29,671 INFO L93 Difference]: Finished difference Result 53 states and 64 transitions. [2020-10-29 03:50:29,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 03:50:29,672 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2020-10-29 03:50:29,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:50:29,674 INFO L225 Difference]: With dead ends: 53 [2020-10-29 03:50:29,674 INFO L226 Difference]: Without dead ends: 39 [2020-10-29 03:50:29,677 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:50:29,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-29 03:50:29,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2020-10-29 03:50:29,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-29 03:50:29,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2020-10-29 03:50:29,688 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 28 [2020-10-29 03:50:29,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:50:29,689 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2020-10-29 03:50:29,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 03:50:29,689 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2020-10-29 03:50:29,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-29 03:50:29,690 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:50:29,690 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:50:29,690 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 03:50:29,690 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:50:29,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:50:29,691 INFO L82 PathProgramCache]: Analyzing trace with hash -1229914284, now seen corresponding path program 1 times [2020-10-29 03:50:29,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:50:29,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1383362813] [2020-10-29 03:50:29,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:50:29,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-29 03:50:29,713 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-29 03:50:29,713 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-29 03:50:29,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 03:50:29,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 03:50:29 BoogieIcfgContainer [2020-10-29 03:50:29,734 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 03:50:29,737 INFO L168 Benchmark]: Toolchain (without parser) took 5423.02 ms. Allocated memory was 155.2 MB in the beginning and 186.6 MB in the end (delta: 31.5 MB). Free memory was 130.7 MB in the beginning and 100.5 MB in the end (delta: 30.2 MB). Peak memory consumption was 62.3 MB. Max. memory is 8.0 GB. [2020-10-29 03:50:29,738 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 125.8 MB. Free memory is still 100.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 03:50:29,739 INFO L168 Benchmark]: CACSL2BoogieTranslator took 356.67 ms. Allocated memory is still 155.2 MB. Free memory was 130.1 MB in the beginning and 120.4 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-29 03:50:29,739 INFO L168 Benchmark]: Boogie Preprocessor took 77.72 ms. Allocated memory is still 155.2 MB. Free memory was 120.4 MB in the beginning and 118.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-29 03:50:29,740 INFO L168 Benchmark]: RCFGBuilder took 531.51 ms. Allocated memory is still 155.2 MB. Free memory was 118.7 MB in the beginning and 138.7 MB in the end (delta: -19.9 MB). Peak memory consumption was 19.3 MB. Max. memory is 8.0 GB. [2020-10-29 03:50:29,741 INFO L168 Benchmark]: TraceAbstraction took 4436.41 ms. Allocated memory was 155.2 MB in the beginning and 186.6 MB in the end (delta: 31.5 MB). Free memory was 138.3 MB in the beginning and 100.5 MB in the end (delta: 37.8 MB). Peak memory consumption was 69.3 MB. Max. memory is 8.0 GB. [2020-10-29 03:50:29,745 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 125.8 MB. Free memory is still 100.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 356.67 ms. Allocated memory is still 155.2 MB. Free memory was 130.1 MB in the beginning and 120.4 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 77.72 ms. Allocated memory is still 155.2 MB. Free memory was 120.4 MB in the beginning and 118.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 531.51 ms. Allocated memory is still 155.2 MB. Free memory was 118.7 MB in the beginning and 138.7 MB in the end (delta: -19.9 MB). Peak memory consumption was 19.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4436.41 ms. Allocated memory was 155.2 MB in the beginning and 186.6 MB in the end (delta: 31.5 MB). Free memory was 138.3 MB in the beginning and 100.5 MB in the end (delta: 37.8 MB). Peak memory consumption was 69.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND FALSE !(!cond) [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] i=0 [L31] COND TRUE i