/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/s1iff.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 22:55:01,087 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 22:55:01,091 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 22:55:01,117 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 22:55:01,117 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 22:55:01,118 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 22:55:01,120 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 22:55:01,122 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 22:55:01,124 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 22:55:01,125 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 22:55:01,126 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 22:55:01,127 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 22:55:01,127 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 22:55:01,128 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 22:55:01,129 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 22:55:01,131 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 22:55:01,132 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 22:55:01,133 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 22:55:01,135 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 22:55:01,137 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 22:55:01,138 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 22:55:01,139 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 22:55:01,141 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 22:55:01,142 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 22:55:01,144 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 22:55:01,145 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 22:55:01,145 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 22:55:01,146 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 22:55:01,146 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 22:55:01,148 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 22:55:01,148 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 22:55:01,149 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 22:55:01,150 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 22:55:01,151 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 22:55:01,152 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 22:55:01,152 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 22:55:01,153 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 22:55:01,153 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 22:55:01,153 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 22:55:01,154 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 22:55:01,155 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 22:55:01,156 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 22:55:01,187 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 22:55:01,188 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 22:55:01,189 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 22:55:01,189 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 22:55:01,190 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 22:55:01,190 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 22:55:01,190 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 22:55:01,190 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 22:55:01,191 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 22:55:01,191 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 22:55:01,191 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 22:55:01,191 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 22:55:01,191 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 22:55:01,192 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 22:55:01,192 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 22:55:01,192 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 22:55:01,192 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 22:55:01,193 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 22:55:01,193 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 22:55:01,193 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 22:55:01,193 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 22:55:01,193 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 22:55:01,194 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 22:55:01,194 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 22:55:01,194 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 22:55:01,194 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 22:55:01,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 22:55:01,195 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 22:55:01,195 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 22:55:01,195 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 22:55:01,707 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 22:55:01,732 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 22:55:01,737 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 22:55:01,740 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 22:55:01,740 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 22:55:01,742 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s1iff.c [2020-09-24 22:55:01,836 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/df22e1569/8f9ce51aa13a49d29ae621f3249bcc46/FLAG79a28f621 [2020-09-24 22:55:02,401 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 22:55:02,401 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/s1iff.c [2020-09-24 22:55:02,410 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/df22e1569/8f9ce51aa13a49d29ae621f3249bcc46/FLAG79a28f621 [2020-09-24 22:55:02,769 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/df22e1569/8f9ce51aa13a49d29ae621f3249bcc46 [2020-09-24 22:55:02,785 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 22:55:02,791 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 22:55:02,793 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 22:55:02,793 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 22:55:02,797 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 22:55:02,798 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:55:02" (1/1) ... [2020-09-24 22:55:02,802 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@243023c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:55:02, skipping insertion in model container [2020-09-24 22:55:02,803 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:55:02" (1/1) ... [2020-09-24 22:55:02,812 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 22:55:02,838 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 22:55:03,069 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:55:03,079 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 22:55:03,104 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:55:03,213 INFO L208 MainTranslator]: Completed translation [2020-09-24 22:55:03,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:55:03 WrapperNode [2020-09-24 22:55:03,215 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 22:55:03,216 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 22:55:03,216 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 22:55:03,216 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 22:55:03,234 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:55:03" (1/1) ... [2020-09-24 22:55:03,235 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:55:03" (1/1) ... [2020-09-24 22:55:03,244 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:55:03" (1/1) ... [2020-09-24 22:55:03,245 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:55:03" (1/1) ... [2020-09-24 22:55:03,254 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:55:03" (1/1) ... [2020-09-24 22:55:03,260 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:55:03" (1/1) ... [2020-09-24 22:55:03,262 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:55:03" (1/1) ... [2020-09-24 22:55:03,265 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 22:55:03,266 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 22:55:03,266 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 22:55:03,266 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 22:55:03,270 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:55:03" (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 22:55:03,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 22:55:03,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 22:55:03,351 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 22:55:03,352 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 22:55:03,352 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 22:55:03,353 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 22:55:03,354 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 22:55:03,354 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 22:55:03,355 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 22:55:03,355 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 22:55:03,355 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 22:55:03,355 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 22:55:03,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 22:55:03,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 22:55:03,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 22:55:03,357 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 22:55:03,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 22:55:03,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 22:55:03,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 22:55:03,751 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 22:55:03,751 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-24 22:55:03,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:55:03 BoogieIcfgContainer [2020-09-24 22:55:03,757 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 22:55:03,758 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 22:55:03,759 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 22:55:03,762 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 22:55:03,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 10:55:02" (1/3) ... [2020-09-24 22:55:03,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19a41d23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:55:03, skipping insertion in model container [2020-09-24 22:55:03,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:55:03" (2/3) ... [2020-09-24 22:55:03,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19a41d23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:55:03, skipping insertion in model container [2020-09-24 22:55:03,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:55:03" (3/3) ... [2020-09-24 22:55:03,767 INFO L109 eAbstractionObserver]: Analyzing ICFG s1iff.c [2020-09-24 22:55:03,779 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 22:55:03,790 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 22:55:03,814 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 22:55:03,846 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 22:55:03,847 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 22:55:03,847 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 22:55:03,847 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 22:55:03,847 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 22:55:03,847 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 22:55:03,847 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 22:55:03,847 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 22:55:03,871 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2020-09-24 22:55:03,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-24 22:55:03,880 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:55:03,881 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 22:55:03,881 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:55:03,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:55:03,887 INFO L82 PathProgramCache]: Analyzing trace with hash 171473808, now seen corresponding path program 1 times [2020-09-24 22:55:03,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:55:03,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [844602007] [2020-09-24 22:55:03,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:55:04,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:04,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:04,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:04,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:04,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-24 22:55:04,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:55:04,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-09-24 22:55:04,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:04,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:55:04,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-09-24 22:55:04,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:55:04,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 22:55:04,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:55:04,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:04,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:04,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:04,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:55:04,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:55:04,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 22:55:04,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:04,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:55:04,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:55:04,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:55:04,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:55:04,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 22:55:04,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:04,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:04,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:04,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:55:04,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:55:04,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 22:55:04,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:04,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:55:04,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:55:04,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:55:04,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:55:04,422 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 22:55:04,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [844602007] [2020-09-24 22:55:04,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:55:04,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 22:55:04,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57526305] [2020-09-24 22:55:04,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 22:55:04,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:55:04,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 22:55:04,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 22:55:04,458 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 3 states. [2020-09-24 22:55:04,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:55:04,662 INFO L93 Difference]: Finished difference Result 113 states and 126 transitions. [2020-09-24 22:55:04,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 22:55:04,664 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-09-24 22:55:04,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:55:04,676 INFO L225 Difference]: With dead ends: 113 [2020-09-24 22:55:04,676 INFO L226 Difference]: Without dead ends: 53 [2020-09-24 22:55:04,683 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 22:55:04,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-09-24 22:55:04,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-09-24 22:55:04,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-24 22:55:04,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2020-09-24 22:55:04,742 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 31 [2020-09-24 22:55:04,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:55:04,742 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2020-09-24 22:55:04,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 22:55:04,743 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2020-09-24 22:55:04,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-24 22:55:04,744 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:55:04,744 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 22:55:04,745 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 22:55:04,745 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:55:04,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:55:04,746 INFO L82 PathProgramCache]: Analyzing trace with hash 921692051, now seen corresponding path program 1 times [2020-09-24 22:55:04,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:55:04,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1635439392] [2020-09-24 22:55:04,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:55:04,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:04,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:04,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:05,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:05,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-24 22:55:05,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:55:05,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 417 [2020-09-24 22:55:05,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:05,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 22:55:05,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 22:55:05,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 22:55:05,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:55:05,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:55:05,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:05,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:05,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:05,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:55:05,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:55:05,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 22:55:05,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:05,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:55:05,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:55:05,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:55:05,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:55:05,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 22:55:05,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:05,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:05,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:05,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:55:05,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:55:05,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 22:55:05,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:05,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:55:05,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:55:05,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:55:05,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:55:05,345 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 22:55:05,346 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1635439392] [2020-09-24 22:55:05,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:55:05,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 22:55:05,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651101116] [2020-09-24 22:55:05,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 22:55:05,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:55:05,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 22:55:05,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 22:55:05,355 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand 5 states. [2020-09-24 22:55:05,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:55:05,556 INFO L93 Difference]: Finished difference Result 80 states and 85 transitions. [2020-09-24 22:55:05,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 22:55:05,557 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-09-24 22:55:05,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:55:05,559 INFO L225 Difference]: With dead ends: 80 [2020-09-24 22:55:05,559 INFO L226 Difference]: Without dead ends: 55 [2020-09-24 22:55:05,560 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 22:55:05,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-24 22:55:05,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-09-24 22:55:05,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-24 22:55:05,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2020-09-24 22:55:05,571 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 31 [2020-09-24 22:55:05,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:55:05,571 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 57 transitions. [2020-09-24 22:55:05,571 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 22:55:05,571 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2020-09-24 22:55:05,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-24 22:55:05,573 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:55:05,573 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 22:55:05,574 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 22:55:05,574 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:55:05,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:55:05,574 INFO L82 PathProgramCache]: Analyzing trace with hash -827220298, now seen corresponding path program 1 times [2020-09-24 22:55:05,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:55:05,575 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [303328502] [2020-09-24 22:55:05,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:55:05,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:05,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:05,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:06,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:06,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:07,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:08,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:08,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:08,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:08,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:09,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:10,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:10,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:10,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:10,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:10,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-24 22:55:10,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-24 22:55:10,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-24 22:55:10,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:10,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 22:55:10,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-24 22:55:10,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 22:55:10,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 22:55:11,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:55:11,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:11,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:11,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:11,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:55:11,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:55:11,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 22:55:11,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:11,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:55:11,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:55:11,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:55:11,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:55:11,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 22:55:11,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:11,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:11,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:11,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:55:11,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:55:11,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:55:11,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:11,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:55:11,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:55:11,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:55:11,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:55:11,165 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 22:55:11,165 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [303328502] [2020-09-24 22:55:11,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:55:11,166 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-24 22:55:11,166 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884609791] [2020-09-24 22:55:11,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-24 22:55:11,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:55:11,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-24 22:55:11,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2020-09-24 22:55:11,172 INFO L87 Difference]: Start difference. First operand 55 states and 57 transitions. Second operand 17 states. [2020-09-24 22:55:12,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:55:12,034 INFO L93 Difference]: Finished difference Result 84 states and 87 transitions. [2020-09-24 22:55:12,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-24 22:55:12,035 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 48 [2020-09-24 22:55:12,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:55:12,037 INFO L225 Difference]: With dead ends: 84 [2020-09-24 22:55:12,037 INFO L226 Difference]: Without dead ends: 78 [2020-09-24 22:55:12,038 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=141, Invalid=671, Unknown=0, NotChecked=0, Total=812 [2020-09-24 22:55:12,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-09-24 22:55:12,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 67. [2020-09-24 22:55:12,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-09-24 22:55:12,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 70 transitions. [2020-09-24 22:55:12,048 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 70 transitions. Word has length 48 [2020-09-24 22:55:12,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:55:12,049 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 70 transitions. [2020-09-24 22:55:12,049 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-24 22:55:12,049 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 70 transitions. [2020-09-24 22:55:12,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-24 22:55:12,051 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:55:12,051 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 22:55:12,051 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 22:55:12,052 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:55:12,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:55:12,052 INFO L82 PathProgramCache]: Analyzing trace with hash -1272927570, now seen corresponding path program 1 times [2020-09-24 22:55:12,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:55:12,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1835239020] [2020-09-24 22:55:12,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:55:12,068 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-09-24 22:55:12,068 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-09-24 22:55:12,069 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 22:55:12,074 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 22:55:12,096 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-09-24 22:55:12,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 10:55:12 BoogieIcfgContainer [2020-09-24 22:55:12,096 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 22:55:12,100 INFO L168 Benchmark]: Toolchain (without parser) took 9312.33 ms. Allocated memory was 147.3 MB in the beginning and 276.8 MB in the end (delta: 129.5 MB). Free memory was 103.0 MB in the beginning and 190.2 MB in the end (delta: -87.1 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. [2020-09-24 22:55:12,102 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 147.3 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-09-24 22:55:12,102 INFO L168 Benchmark]: CACSL2BoogieTranslator took 423.05 ms. Allocated memory was 147.3 MB in the beginning and 203.4 MB in the end (delta: 56.1 MB). Free memory was 102.4 MB in the beginning and 182.3 MB in the end (delta: -79.9 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. [2020-09-24 22:55:12,103 INFO L168 Benchmark]: Boogie Preprocessor took 49.11 ms. Allocated memory is still 203.4 MB. Free memory was 182.3 MB in the beginning and 179.9 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-09-24 22:55:12,104 INFO L168 Benchmark]: RCFGBuilder took 491.83 ms. Allocated memory is still 203.4 MB. Free memory was 179.9 MB in the beginning and 160.3 MB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. [2020-09-24 22:55:12,105 INFO L168 Benchmark]: TraceAbstraction took 8338.20 ms. Allocated memory was 203.4 MB in the beginning and 276.8 MB in the end (delta: 73.4 MB). Free memory was 160.3 MB in the beginning and 190.2 MB in the end (delta: -29.9 MB). Peak memory consumption was 43.5 MB. Max. memory is 7.1 GB. [2020-09-24 22:55:12,109 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 147.3 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 423.05 ms. Allocated memory was 147.3 MB in the beginning and 203.4 MB in the end (delta: 56.1 MB). Free memory was 102.4 MB in the beginning and 182.3 MB in the end (delta: -79.9 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 49.11 ms. Allocated memory is still 203.4 MB. Free memory was 182.3 MB in the beginning and 179.9 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 491.83 ms. Allocated memory is still 203.4 MB. Free memory was 179.9 MB in the beginning and 160.3 MB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 8338.20 ms. Allocated memory was 203.4 MB in the beginning and 276.8 MB in the end (delta: 73.4 MB). Free memory was 160.3 MB in the beginning and 190.2 MB in the end (delta: -29.9 MB). Peak memory consumption was 43.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 13]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L17] int N; [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L11] COND FALSE !(!cond) [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L25] int i; [L26] long long sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] sum[0] = 1 [L30] i=0 [L30] COND TRUE i