/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=LOWLEXORDER --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/res1of.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:49:23,780 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:49:23,784 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:49:23,810 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:49:23,810 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:49:23,811 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:49:23,813 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:49:23,814 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:49:23,816 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:49:23,817 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:49:23,818 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:49:23,819 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:49:23,820 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:49:23,821 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:49:23,822 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:49:23,823 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:49:23,825 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:49:23,826 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:49:23,829 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:49:23,834 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:49:23,837 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:49:23,839 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:49:23,840 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:49:23,841 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:49:23,847 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:49:23,847 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:49:23,847 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:49:23,851 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:49:23,852 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:49:23,854 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:49:23,854 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:49:23,855 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:49:23,856 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:49:23,857 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:49:23,858 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:49:23,858 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:49:23,859 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:49:23,859 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:49:23,859 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:49:23,860 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:49:23,862 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:49:23,863 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 21:49:23,920 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:49:23,921 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:49:23,922 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:49:23,922 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:49:23,923 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:49:23,923 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:49:23,923 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:49:23,923 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:49:23,923 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:49:23,924 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:49:23,925 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:49:23,925 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:49:23,925 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:49:23,925 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:49:23,926 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:49:23,926 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:49:23,926 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:49:23,926 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:49:23,926 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:49:23,927 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:49:23,927 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:49:23,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:49:23,927 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:49:23,927 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:49:23,928 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:49:23,928 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:49:23,928 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:49:23,928 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:49:23,928 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:49:23,928 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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:49:24,428 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:49:24,446 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:49:24,450 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:49:24,452 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:49:24,453 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:49:24,454 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/res1of.c [2020-09-24 21:49:24,546 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8f726b700/d7cda5ec2d464a17b00739d6fdbb0f97/FLAG843d2c424 [2020-09-24 21:49:25,062 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:49:25,063 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/res1of.c [2020-09-24 21:49:25,073 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8f726b700/d7cda5ec2d464a17b00739d6fdbb0f97/FLAG843d2c424 [2020-09-24 21:49:25,408 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8f726b700/d7cda5ec2d464a17b00739d6fdbb0f97 [2020-09-24 21:49:25,422 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:49:25,429 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:49:25,431 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:49:25,431 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:49:25,435 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:49:25,436 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:49:25" (1/1) ... [2020-09-24 21:49:25,441 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@629af9c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:49:25, skipping insertion in model container [2020-09-24 21:49:25,441 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:49:25" (1/1) ... [2020-09-24 21:49:25,451 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:49:25,479 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:49:25,699 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:49:25,709 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:49:25,732 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:49:25,751 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:49:25,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:49:25 WrapperNode [2020-09-24 21:49:25,751 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:49:25,752 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:49:25,752 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:49:25,753 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:49:25,849 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:49:25" (1/1) ... [2020-09-24 21:49:25,849 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:49:25" (1/1) ... [2020-09-24 21:49:25,859 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:49:25" (1/1) ... [2020-09-24 21:49:25,859 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:49:25" (1/1) ... [2020-09-24 21:49:25,869 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:49:25" (1/1) ... [2020-09-24 21:49:25,878 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:49:25" (1/1) ... [2020-09-24 21:49:25,886 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:49:25" (1/1) ... [2020-09-24 21:49:25,889 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:49:25,889 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:49:25,893 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:49:25,893 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:49:25,894 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:49:25" (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 21:49:25,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:49:25,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:49:25,962 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 21:49:25,962 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 21:49:25,963 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:49:25,963 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:49:25,963 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 21:49:25,963 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 21:49:25,964 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 21:49:25,964 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:49:25,964 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 21:49:25,965 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:49:25,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 21:49:25,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 21:49:25,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 21:49:25,965 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 21:49:25,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 21:49:25,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:49:25,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:49:26,343 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:49:26,343 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-24 21:49:26,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:49:26 BoogieIcfgContainer [2020-09-24 21:49:26,349 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:49:26,350 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:49:26,350 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:49:26,353 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:49:26,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:49:25" (1/3) ... [2020-09-24 21:49:26,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a43c24a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:49:26, skipping insertion in model container [2020-09-24 21:49:26,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:49:25" (2/3) ... [2020-09-24 21:49:26,358 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a43c24a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:49:26, skipping insertion in model container [2020-09-24 21:49:26,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:49:26" (3/3) ... [2020-09-24 21:49:26,361 INFO L109 eAbstractionObserver]: Analyzing ICFG res1of.c [2020-09-24 21:49:26,372 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:49:26,382 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:49:26,402 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:49:26,430 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:49:26,430 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:49:26,430 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:49:26,431 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:49:26,431 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:49:26,431 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:49:26,431 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:49:26,431 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:49:26,452 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-09-24 21:49:26,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-24 21:49:26,460 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:49:26,461 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] [2020-09-24 21:49:26,461 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:49:26,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:49:26,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1485233439, now seen corresponding path program 1 times [2020-09-24 21:49:26,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:49:26,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [290663961] [2020-09-24 21:49:26,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:49:26,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:26,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:26,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:26,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:26,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:27,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:27,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:49:27,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-24 21:49:27,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 21:49:27,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1092 [2020-09-24 21:49:27,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:49:27,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:49:27,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 21:49:27,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 21:49:27,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 21:49:27,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:49:27,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:27,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:27,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:49:27,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:49:27,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:49:27,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 21:49:27,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:49:27,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:49:27,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:49:27,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:49:27,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:49:27,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 21:49:27,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:27,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:27,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:49:27,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 21:49:27,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:49:27,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 21:49:27,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:49:27,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:49:27,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:49:27,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 21:49:27,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:49:27,986 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 21:49:27,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [290663961] [2020-09-24 21:49:27,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:49:27,990 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 21:49:27,991 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270715759] [2020-09-24 21:49:27,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 21:49:27,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:49:28,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 21:49:28,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 21:49:28,018 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 8 states. [2020-09-24 21:49:28,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:49:28,442 INFO L93 Difference]: Finished difference Result 160 states and 188 transitions. [2020-09-24 21:49:28,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 21:49:28,445 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 37 [2020-09-24 21:49:28,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:49:28,457 INFO L225 Difference]: With dead ends: 160 [2020-09-24 21:49:28,457 INFO L226 Difference]: Without dead ends: 77 [2020-09-24 21:49:28,462 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-09-24 21:49:28,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-09-24 21:49:28,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 69. [2020-09-24 21:49:28,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-09-24 21:49:28,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 75 transitions. [2020-09-24 21:49:28,518 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 75 transitions. Word has length 37 [2020-09-24 21:49:28,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:49:28,519 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 75 transitions. [2020-09-24 21:49:28,519 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 21:49:28,519 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 75 transitions. [2020-09-24 21:49:28,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-24 21:49:28,521 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:49:28,521 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] [2020-09-24 21:49:28,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:49:28,522 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:49:28,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:49:28,522 INFO L82 PathProgramCache]: Analyzing trace with hash -1830842721, now seen corresponding path program 1 times [2020-09-24 21:49:28,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:49:28,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1409614675] [2020-09-24 21:49:28,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:49:28,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:28,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:28,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:28,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:28,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:28,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:29,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:29,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:29,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:31,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:49:31,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-24 21:49:31,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 21:49:31,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2791 [2020-09-24 21:49:31,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:49:31,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:49:31,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 21:49:31,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 21:49:31,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-24 21:49:31,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:49:31,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:31,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:31,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:49:31,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:49:31,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:49:31,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 21:49:31,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:49:31,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:49:31,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:49:31,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:49:31,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:49:31,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 21:49:31,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:31,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:31,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:49:31,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 21:49:31,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:49:31,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 21:49:31,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:49:31,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:49:31,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:49:31,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 21:49:31,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:49:31,531 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:49:31,531 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1409614675] [2020-09-24 21:49:31,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:49:31,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 21:49:31,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700223835] [2020-09-24 21:49:31,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 21:49:31,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:49:31,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 21:49:31,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-24 21:49:31,537 INFO L87 Difference]: Start difference. First operand 69 states and 75 transitions. Second operand 9 states. [2020-09-24 21:49:31,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:49:31,952 INFO L93 Difference]: Finished difference Result 98 states and 106 transitions. [2020-09-24 21:49:31,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 21:49:31,953 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 42 [2020-09-24 21:49:31,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:49:31,955 INFO L225 Difference]: With dead ends: 98 [2020-09-24 21:49:31,957 INFO L226 Difference]: Without dead ends: 92 [2020-09-24 21:49:31,959 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-09-24 21:49:31,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-09-24 21:49:31,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 71. [2020-09-24 21:49:31,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-09-24 21:49:31,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 76 transitions. [2020-09-24 21:49:31,988 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 76 transitions. Word has length 42 [2020-09-24 21:49:31,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:49:31,989 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 76 transitions. [2020-09-24 21:49:31,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 21:49:31,990 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 76 transitions. [2020-09-24 21:49:31,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-24 21:49:31,992 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:49:31,992 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] [2020-09-24 21:49:31,993 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:49:31,994 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:49:31,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:49:31,994 INFO L82 PathProgramCache]: Analyzing trace with hash 1563324654, now seen corresponding path program 1 times [2020-09-24 21:49:31,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:49:31,995 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1484787501] [2020-09-24 21:49:31,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:49:32,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:32,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:32,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:32,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:32,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:32,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:32,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:33,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:49:33,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-24 21:49:33,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 21:49:33,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1346 [2020-09-24 21:49:33,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:49:33,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:49:33,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 21:49:33,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 21:49:33,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:49:33,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:49:33,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:33,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:33,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:49:33,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:49:33,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:49:33,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 21:49:33,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:49:33,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:49:33,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:49:33,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:49:33,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:49:33,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 21:49:33,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:33,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:33,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:49:33,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 21:49:33,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:49:33,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 21:49:33,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:49:33,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:49:33,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:49:33,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 21:49:33,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:49:33,445 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 21:49:33,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1484787501] [2020-09-24 21:49:33,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:49:33,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 21:49:33,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491884539] [2020-09-24 21:49:33,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 21:49:33,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:49:33,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 21:49:33,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:49:33,453 INFO L87 Difference]: Start difference. First operand 71 states and 76 transitions. Second operand 5 states. [2020-09-24 21:49:33,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:49:33,630 INFO L93 Difference]: Finished difference Result 107 states and 118 transitions. [2020-09-24 21:49:33,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 21:49:33,631 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 46 [2020-09-24 21:49:33,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:49:33,632 INFO L225 Difference]: With dead ends: 107 [2020-09-24 21:49:33,633 INFO L226 Difference]: Without dead ends: 66 [2020-09-24 21:49:33,633 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 21:49:33,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-24 21:49:33,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-09-24 21:49:33,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-24 21:49:33,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 69 transitions. [2020-09-24 21:49:33,651 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 69 transitions. Word has length 46 [2020-09-24 21:49:33,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:49:33,652 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 69 transitions. [2020-09-24 21:49:33,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 21:49:33,652 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 69 transitions. [2020-09-24 21:49:33,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-24 21:49:33,655 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:49:33,657 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:49:33,657 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:49:33,657 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:49:33,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:49:33,658 INFO L82 PathProgramCache]: Analyzing trace with hash 499886001, now seen corresponding path program 1 times [2020-09-24 21:49:33,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:49:33,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [494778515] [2020-09-24 21:49:33,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:49:33,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 21:49:33,694 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 21:49:33,695 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 21:49:33,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 21:49:33,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 09:49:33 BoogieIcfgContainer [2020-09-24 21:49:33,731 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 21:49:33,736 INFO L168 Benchmark]: Toolchain (without parser) took 8309.24 ms. Allocated memory was 137.9 MB in the beginning and 299.4 MB in the end (delta: 161.5 MB). Free memory was 101.0 MB in the beginning and 125.1 MB in the end (delta: -24.1 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2020-09-24 21:49:33,738 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-09-24 21:49:33,738 INFO L168 Benchmark]: CACSL2BoogieTranslator took 321.39 ms. Allocated memory is still 137.9 MB. Free memory was 100.4 MB in the beginning and 89.8 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2020-09-24 21:49:33,741 INFO L168 Benchmark]: Boogie Preprocessor took 136.88 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 89.8 MB in the beginning and 177.9 MB in the end (delta: -88.1 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-09-24 21:49:33,742 INFO L168 Benchmark]: RCFGBuilder took 459.25 ms. Allocated memory is still 200.8 MB. Free memory was 177.9 MB in the beginning and 157.4 MB in the end (delta: 20.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. [2020-09-24 21:49:33,747 INFO L168 Benchmark]: TraceAbstraction took 7381.61 ms. Allocated memory was 200.8 MB in the beginning and 299.4 MB in the end (delta: 98.6 MB). Free memory was 156.7 MB in the beginning and 125.1 MB in the end (delta: 31.6 MB). Peak memory consumption was 130.1 MB. Max. memory is 7.1 GB. [2020-09-24 21:49:33,757 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 321.39 ms. Allocated memory is still 137.9 MB. Free memory was 100.4 MB in the beginning and 89.8 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 136.88 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 89.8 MB in the beginning and 177.9 MB in the end (delta: -88.1 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 459.25 ms. Allocated memory is still 200.8 MB. Free memory was 177.9 MB in the beginning and 157.4 MB in the end (delta: 20.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7381.61 ms. Allocated memory was 200.8 MB in the beginning and 299.4 MB in the end (delta: 98.6 MB). Free memory was 156.7 MB in the beginning and 125.1 MB in the end (delta: 31.6 MB). Peak memory consumption was 130.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int N; [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L11] COND FALSE !(!cond) [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L25] int i; [L26] long long sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L28] int *b = malloc(sizeof(int)*N); [L30] sum[0] = 0 [L31] i=0 [L31] COND TRUE i