/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=HIGHLEXORDER --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/condnf.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 22:54:34,036 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 22:54:34,040 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 22:54:34,067 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 22:54:34,069 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 22:54:34,077 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 22:54:34,080 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 22:54:34,083 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 22:54:34,086 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 22:54:34,090 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 22:54:34,091 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 22:54:34,093 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 22:54:34,093 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 22:54:34,096 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 22:54:34,099 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 22:54:34,102 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 22:54:34,104 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 22:54:34,106 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 22:54:34,107 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 22:54:34,116 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 22:54:34,119 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 22:54:34,120 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 22:54:34,121 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 22:54:34,122 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 22:54:34,135 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 22:54:34,135 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 22:54:34,136 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 22:54:34,138 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 22:54:34,138 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 22:54:34,142 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 22:54:34,142 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 22:54:34,143 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 22:54:34,144 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 22:54:34,145 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 22:54:34,146 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 22:54:34,146 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 22:54:34,147 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 22:54:34,147 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 22:54:34,148 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 22:54:34,149 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 22:54:34,150 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 22:54:34,151 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 22:54:34,206 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 22:54:34,206 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 22:54:34,208 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 22:54:34,209 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 22:54:34,209 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 22:54:34,209 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 22:54:34,210 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 22:54:34,210 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 22:54:34,210 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 22:54:34,210 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 22:54:34,211 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 22:54:34,211 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 22:54:34,212 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 22:54:34,212 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 22:54:34,212 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 22:54:34,213 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 22:54:34,213 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 22:54:34,213 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 22:54:34,213 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 22:54:34,213 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 22:54:34,214 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 22:54:34,214 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 22:54:34,214 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 22:54:34,214 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 22:54:34,214 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 22:54:34,215 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 22:54:34,215 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 22:54:34,215 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 22:54:34,215 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 22:54:34,215 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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;log-additional-information=true; [2020-09-24 22:54:34,716 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 22:54:34,739 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 22:54:34,744 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 22:54:34,747 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 22:54:34,747 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 22:54:34,748 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/condnf.c [2020-09-24 22:54:34,840 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/165f61121/8a09ee46324444acbeb5fd9d7b24d0e6/FLAG75d41e025 [2020-09-24 22:54:35,392 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 22:54:35,393 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/condnf.c [2020-09-24 22:54:35,402 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/165f61121/8a09ee46324444acbeb5fd9d7b24d0e6/FLAG75d41e025 [2020-09-24 22:54:35,718 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/165f61121/8a09ee46324444acbeb5fd9d7b24d0e6 [2020-09-24 22:54:35,734 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 22:54:35,741 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 22:54:35,745 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 22:54:35,745 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 22:54:35,750 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 22:54:35,751 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:54:35" (1/1) ... [2020-09-24 22:54:35,756 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@434f45a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:35, skipping insertion in model container [2020-09-24 22:54:35,756 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:54:35" (1/1) ... [2020-09-24 22:54:35,767 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 22:54:35,797 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 22:54:36,031 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:54:36,043 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 22:54:36,064 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:54:36,083 INFO L208 MainTranslator]: Completed translation [2020-09-24 22:54:36,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:36 WrapperNode [2020-09-24 22:54:36,084 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 22:54:36,085 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 22:54:36,085 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 22:54:36,086 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 22:54:36,186 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:36" (1/1) ... [2020-09-24 22:54:36,186 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:36" (1/1) ... [2020-09-24 22:54:36,198 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:36" (1/1) ... [2020-09-24 22:54:36,199 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:36" (1/1) ... [2020-09-24 22:54:36,220 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:36" (1/1) ... [2020-09-24 22:54:36,231 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:36" (1/1) ... [2020-09-24 22:54:36,237 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:36" (1/1) ... [2020-09-24 22:54:36,240 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 22:54:36,241 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 22:54:36,241 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 22:54:36,241 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 22:54:36,242 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:36" (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 22:54:36,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 22:54:36,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 22:54:36,322 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 22:54:36,322 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 22:54:36,322 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 22:54:36,322 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 22:54:36,323 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 22:54:36,323 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 22:54:36,324 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 22:54:36,324 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 22:54:36,324 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 22:54:36,324 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 22:54:36,324 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 22:54:36,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 22:54:36,325 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 22:54:36,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 22:54:36,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 22:54:36,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 22:54:36,714 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 22:54:36,714 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-24 22:54:36,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:54:36 BoogieIcfgContainer [2020-09-24 22:54:36,720 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 22:54:36,722 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 22:54:36,722 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 22:54:36,726 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 22:54:36,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 10:54:35" (1/3) ... [2020-09-24 22:54:36,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3180a5d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:54:36, skipping insertion in model container [2020-09-24 22:54:36,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:36" (2/3) ... [2020-09-24 22:54:36,728 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3180a5d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:54:36, skipping insertion in model container [2020-09-24 22:54:36,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:54:36" (3/3) ... [2020-09-24 22:54:36,730 INFO L109 eAbstractionObserver]: Analyzing ICFG condnf.c [2020-09-24 22:54:36,743 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 22:54:36,754 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 22:54:36,777 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 22:54:36,807 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 22:54:36,807 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 22:54:36,807 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 22:54:36,807 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 22:54:36,807 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 22:54:36,808 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 22:54:36,808 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 22:54:36,808 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 22:54:36,832 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states. [2020-09-24 22:54:36,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-24 22:54:36,840 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:54:36,842 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:54:36,842 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:54:36,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:54:36,849 INFO L82 PathProgramCache]: Analyzing trace with hash -386984160, now seen corresponding path program 1 times [2020-09-24 22:54:36,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:54:36,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1651554806] [2020-09-24 22:54:36,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:54:36,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:54:37,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:37,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:37,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:54:37,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-24 22:54:37,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:54:37,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 275 [2020-09-24 22:54:37,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:54:37,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:54:37,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-24 22:54:37,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:54:37,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 22:54:37,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:54:37,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:54:37,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:37,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:54:37,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:54:37,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:54:37,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 22:54:37,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:54:37,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:54:37,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:54:37,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:54:37,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:54:37,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 22:54:37,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:54:37,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:37,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:54:37,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:54:37,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:54:37,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 22:54:37,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:54:37,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:54:37,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:54:37,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:54:37,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:54:37,420 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 22:54:37,421 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1651554806] [2020-09-24 22:54:37,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:54:37,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 22:54:37,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609202659] [2020-09-24 22:54:37,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 22:54:37,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:54:37,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 22:54:37,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 22:54:37,459 INFO L87 Difference]: Start difference. First operand 62 states. Second operand 3 states. [2020-09-24 22:54:37,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:54:37,656 INFO L93 Difference]: Finished difference Result 107 states and 124 transitions. [2020-09-24 22:54:37,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 22:54:37,659 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-09-24 22:54:37,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:54:37,672 INFO L225 Difference]: With dead ends: 107 [2020-09-24 22:54:37,673 INFO L226 Difference]: Without dead ends: 55 [2020-09-24 22:54:37,678 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 22:54:37,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-24 22:54:37,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-09-24 22:54:37,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-24 22:54:37,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 58 transitions. [2020-09-24 22:54:37,735 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 58 transitions. Word has length 31 [2020-09-24 22:54:37,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:54:37,736 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 58 transitions. [2020-09-24 22:54:37,736 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 22:54:37,736 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 58 transitions. [2020-09-24 22:54:37,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-24 22:54:37,738 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:54:37,738 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:54:37,739 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 22:54:37,739 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:54:37,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:54:37,740 INFO L82 PathProgramCache]: Analyzing trace with hash 1278196063, now seen corresponding path program 1 times [2020-09-24 22:54:37,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:54:37,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1559997220] [2020-09-24 22:54:37,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:54:37,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:54:37,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:37,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:37,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:38,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:38,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:54:38,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-24 22:54:38,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 22:54:38,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 814 [2020-09-24 22:54:38,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:54:38,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:54:38,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-24 22:54:38,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 22:54:38,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 22:54:38,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:54:38,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:54:38,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:38,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:54:38,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:54:38,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:54:38,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 22:54:38,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:54:38,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:54:38,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:54:38,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:54:38,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 22:54:38,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 22:54:38,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:54:38,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:38,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:54:38,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:54:38,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:54:38,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 22:54:38,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:54:38,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:54:38,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:54:38,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:54:38,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:54:38,696 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 22:54:38,698 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1559997220] [2020-09-24 22:54:38,699 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:54:38,699 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 22:54:38,699 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236814380] [2020-09-24 22:54:38,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 22:54:38,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:54:38,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 22:54:38,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 22:54:38,706 INFO L87 Difference]: Start difference. First operand 55 states and 58 transitions. Second operand 6 states. [2020-09-24 22:54:39,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:54:39,039 INFO L93 Difference]: Finished difference Result 108 states and 118 transitions. [2020-09-24 22:54:39,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 22:54:39,040 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2020-09-24 22:54:39,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:54:39,044 INFO L225 Difference]: With dead ends: 108 [2020-09-24 22:54:39,045 INFO L226 Difference]: Without dead ends: 78 [2020-09-24 22:54:39,047 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-24 22:54:39,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-09-24 22:54:39,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 57. [2020-09-24 22:54:39,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-09-24 22:54:39,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 60 transitions. [2020-09-24 22:54:39,070 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 60 transitions. Word has length 31 [2020-09-24 22:54:39,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:54:39,070 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 60 transitions. [2020-09-24 22:54:39,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 22:54:39,071 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 60 transitions. [2020-09-24 22:54:39,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-24 22:54:39,072 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:54:39,073 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 22:54:39,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 22:54:39,073 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:54:39,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:54:39,074 INFO L82 PathProgramCache]: Analyzing trace with hash -620119431, now seen corresponding path program 1 times [2020-09-24 22:54:39,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:54:39,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [596023828] [2020-09-24 22:54:39,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:54:39,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:54:39,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:39,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:39,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:39,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:41,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:54:41,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-24 22:54:41,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 22:54:41,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2096 [2020-09-24 22:54:41,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:54:41,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 22:54:41,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-24 22:54:41,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 22:54:41,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 22:54:41,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:54:41,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:54:41,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:41,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:54:41,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:54:41,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:54:41,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 22:54:41,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:54:41,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:54:41,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:54:41,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:54:41,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:54:41,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 22:54:41,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:54:41,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:41,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:54:41,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:54:41,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:54:41,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:54:41,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:54:41,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:54:41,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:54:41,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:54:41,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:54:41,399 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 22:54:41,400 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [596023828] [2020-09-24 22:54:41,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:54:41,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 22:54:41,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083187730] [2020-09-24 22:54:41,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 22:54:41,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:54:41,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 22:54:41,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:54:41,406 INFO L87 Difference]: Start difference. First operand 57 states and 60 transitions. Second operand 9 states. [2020-09-24 22:54:41,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:54:41,921 INFO L93 Difference]: Finished difference Result 113 states and 121 transitions. [2020-09-24 22:54:41,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 22:54:41,922 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 46 [2020-09-24 22:54:41,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:54:41,925 INFO L225 Difference]: With dead ends: 113 [2020-09-24 22:54:41,925 INFO L226 Difference]: Without dead ends: 111 [2020-09-24 22:54:41,926 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2020-09-24 22:54:41,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-09-24 22:54:41,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 73. [2020-09-24 22:54:41,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-09-24 22:54:41,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 78 transitions. [2020-09-24 22:54:41,951 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 78 transitions. Word has length 46 [2020-09-24 22:54:41,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:54:41,952 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 78 transitions. [2020-09-24 22:54:41,952 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 22:54:41,952 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 78 transitions. [2020-09-24 22:54:41,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-24 22:54:41,956 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:54:41,956 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:54:41,957 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 22:54:41,957 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:54:41,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:54:41,959 INFO L82 PathProgramCache]: Analyzing trace with hash 1321326334, now seen corresponding path program 1 times [2020-09-24 22:54:41,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:54:41,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [819154844] [2020-09-24 22:54:41,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:54:41,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 22:54:41,988 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 22:54:41,988 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 22:54:41,994 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 22:54:42,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 10:54:42 BoogieIcfgContainer [2020-09-24 22:54:42,024 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 22:54:42,029 INFO L168 Benchmark]: Toolchain (without parser) took 6290.29 ms. Allocated memory was 137.4 MB in the beginning and 252.7 MB in the end (delta: 115.3 MB). Free memory was 100.5 MB in the beginning and 185.6 MB in the end (delta: -85.1 MB). Peak memory consumption was 30.2 MB. Max. memory is 7.1 GB. [2020-09-24 22:54:42,031 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 137.4 MB. Free memory was 118.8 MB in the beginning and 118.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-09-24 22:54:42,032 INFO L168 Benchmark]: CACSL2BoogieTranslator took 339.70 ms. Allocated memory is still 137.4 MB. Free memory was 99.8 MB in the beginning and 89.6 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-09-24 22:54:42,035 INFO L168 Benchmark]: Boogie Preprocessor took 155.23 ms. Allocated memory was 137.4 MB in the beginning and 200.8 MB in the end (delta: 63.4 MB). Free memory was 89.6 MB in the beginning and 178.6 MB in the end (delta: -89.0 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. [2020-09-24 22:54:42,036 INFO L168 Benchmark]: RCFGBuilder took 479.54 ms. Allocated memory is still 200.8 MB. Free memory was 178.6 MB in the beginning and 159.8 MB in the end (delta: 18.8 MB). Peak memory consumption was 18.8 MB. Max. memory is 7.1 GB. [2020-09-24 22:54:42,042 INFO L168 Benchmark]: TraceAbstraction took 5302.57 ms. Allocated memory was 200.8 MB in the beginning and 252.7 MB in the end (delta: 51.9 MB). Free memory was 159.1 MB in the beginning and 185.6 MB in the end (delta: -26.5 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. [2020-09-24 22:54:42,054 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 137.4 MB. Free memory was 118.8 MB in the beginning and 118.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 339.70 ms. Allocated memory is still 137.4 MB. Free memory was 99.8 MB in the beginning and 89.6 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 155.23 ms. Allocated memory was 137.4 MB in the beginning and 200.8 MB in the end (delta: 63.4 MB). Free memory was 89.6 MB in the beginning and 178.6 MB in the end (delta: -89.0 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 479.54 ms. Allocated memory is still 200.8 MB. Free memory was 178.6 MB in the beginning and 159.8 MB in the end (delta: 18.8 MB). Peak memory consumption was 18.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5302.57 ms. Allocated memory was 200.8 MB in the beginning and 252.7 MB in the end (delta: 51.9 MB). Free memory was 159.1 MB in the beginning and 185.6 MB in the end (delta: -26.5 MB). Peak memory consumption was 25.4 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] int *a = malloc(sizeof(int)*N); [L28] i=0 [L28] COND TRUE i N [L36] EXPR a[i] [L36] a[i] = a[i] [L33] i++ [L33] COND FALSE !(i