/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:47:22,000 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:47:22,005 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:47:22,048 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:47:22,048 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:47:22,060 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:47:22,063 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:47:22,067 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:47:22,071 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:47:22,075 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:47:22,076 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:47:22,078 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:47:22,079 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:47:22,082 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:47:22,085 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:47:22,087 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:47:22,089 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:47:22,090 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:47:22,092 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:47:22,102 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:47:22,104 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:47:22,106 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:47:22,107 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:47:22,108 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:47:22,111 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:47:22,111 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:47:22,111 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:47:22,114 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:47:22,114 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:47:22,116 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:47:22,117 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:47:22,118 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:47:22,119 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:47:22,119 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:47:22,121 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:47:22,121 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:47:22,122 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:47:22,122 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:47:22,122 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:47:22,124 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:47:22,125 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:47:22,126 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 [2020-09-25 14:47:22,166 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:47:22,166 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:47:22,167 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:47:22,168 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:47:22,168 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:47:22,168 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:47:22,168 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:47:22,169 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:47:22,169 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:47:22,169 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:47:22,169 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:47:22,169 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:47:22,170 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:47:22,170 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:47:22,170 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:47:22,170 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:47:22,171 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:47:22,171 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:47:22,171 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:47:22,171 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:47:22,171 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:47:22,172 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:47:22,172 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:47:22,172 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:47:22,172 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:47:22,172 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:47:22,173 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:47:22,173 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:47:22,173 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:47:22,173 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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-09-25 14:47:22,655 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:47:22,673 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:47:22,678 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:47:22,680 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:47:22,680 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:47:22,681 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i [2020-09-25 14:47:22,766 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b3ab0e627/841808a028944139bb8faf13ab374784/FLAG1ce79a28d [2020-09-25 14:47:23,344 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:47:23,344 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i [2020-09-25 14:47:23,352 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b3ab0e627/841808a028944139bb8faf13ab374784/FLAG1ce79a28d [2020-09-25 14:47:23,694 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b3ab0e627/841808a028944139bb8faf13ab374784 [2020-09-25 14:47:23,710 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:47:23,716 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:47:23,718 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:47:23,718 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:47:23,726 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:47:23,727 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:47:23" (1/1) ... [2020-09-25 14:47:23,732 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a2c32e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:47:23, skipping insertion in model container [2020-09-25 14:47:23,732 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:47:23" (1/1) ... [2020-09-25 14:47:23,742 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:47:23,769 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:47:24,005 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:47:24,011 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:47:24,040 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:47:24,066 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:47:24,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:47:24 WrapperNode [2020-09-25 14:47:24,067 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:47:24,068 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:47:24,068 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:47:24,068 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:47:24,168 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:47:24" (1/1) ... [2020-09-25 14:47:24,169 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:47:24" (1/1) ... [2020-09-25 14:47:24,179 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:47:24" (1/1) ... [2020-09-25 14:47:24,180 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:47:24" (1/1) ... [2020-09-25 14:47:24,189 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:47:24" (1/1) ... [2020-09-25 14:47:24,198 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:47:24" (1/1) ... [2020-09-25 14:47:24,206 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:47:24" (1/1) ... [2020-09-25 14:47:24,208 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:47:24,209 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:47:24,209 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:47:24,209 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:47:24,210 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:47:24" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:47:24,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:47:24,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:47:24,281 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 14:47:24,281 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 14:47:24,281 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:47:24,281 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:47:24,281 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 14:47:24,282 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 14:47:24,282 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 14:47:24,282 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-25 14:47:24,282 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:47:24,282 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 14:47:24,282 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 14:47:24,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 14:47:24,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:47:24,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:47:24,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 14:47:24,672 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:47:24,672 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-25 14:47:24,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:47:24 BoogieIcfgContainer [2020-09-25 14:47:24,679 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:47:24,680 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:47:24,680 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:47:24,684 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:47:24,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:47:23" (1/3) ... [2020-09-25 14:47:24,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@205559e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:47:24, skipping insertion in model container [2020-09-25 14:47:24,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:47:24" (2/3) ... [2020-09-25 14:47:24,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@205559e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:47:24, skipping insertion in model container [2020-09-25 14:47:24,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:47:24" (3/3) ... [2020-09-25 14:47:24,689 INFO L109 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_4.i [2020-09-25 14:47:24,699 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:47:24,710 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:47:24,732 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:47:24,762 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:47:24,763 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:47:24,763 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:47:24,763 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:47:24,763 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:47:24,764 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:47:24,764 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:47:24,764 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:47:24,786 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2020-09-25 14:47:24,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-25 14:47:24,794 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:47:24,795 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:47:24,795 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:47:24,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:47:24,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1727331883, now seen corresponding path program 1 times [2020-09-25 14:47:24,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:47:24,811 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1677214552] [2020-09-25 14:47:24,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:47:24,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:25,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:25,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:25,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:25,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 14:47:25,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:47:25,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 910 [2020-09-25 14:47:25,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:25,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:25,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:47:25,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-25 14:47:25,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 14:47:25,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 14:47:26,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:47:26,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:26,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:26,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:26,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:47:26,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:26,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:47:26,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:26,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:26,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:47:26,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:26,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:47:26,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:26,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-25 14:47:26,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:26,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:26,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:26,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:26,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:26,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 14:47:26,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:26,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:26,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:47:26,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:26,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:47:26,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:26,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-25 14:47:26,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:26,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:26,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:26,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:26,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:26,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 14:47:26,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:26,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:26,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:47:26,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:26,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:47:26,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:26,199 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 14:47:26,200 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1677214552] [2020-09-25 14:47:26,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:47:26,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 14:47:26,204 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987876228] [2020-09-25 14:47:26,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 14:47:26,212 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:47:26,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 14:47:26,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:47:26,235 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 9 states. [2020-09-25 14:47:26,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:47:26,733 INFO L93 Difference]: Finished difference Result 141 states and 174 transitions. [2020-09-25 14:47:26,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 14:47:26,735 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-09-25 14:47:26,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:47:26,750 INFO L225 Difference]: With dead ends: 141 [2020-09-25 14:47:26,750 INFO L226 Difference]: Without dead ends: 79 [2020-09-25 14:47:26,756 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-09-25 14:47:26,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-09-25 14:47:26,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 60. [2020-09-25 14:47:26,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-25 14:47:26,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 65 transitions. [2020-09-25 14:47:26,823 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 65 transitions. Word has length 30 [2020-09-25 14:47:26,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:47:26,824 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 65 transitions. [2020-09-25 14:47:26,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 14:47:26,825 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 65 transitions. [2020-09-25 14:47:26,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 14:47:26,827 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:47:26,828 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:47:26,828 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:47:26,828 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:47:26,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:47:26,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1086220015, now seen corresponding path program 1 times [2020-09-25 14:47:26,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:47:26,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1571050677] [2020-09-25 14:47:26,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:47:26,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:26,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:26,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:26,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 14:47:26,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:26,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-25 14:47:26,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:26,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:26,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:26,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 14:47:26,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 14:47:26,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:26,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:47:27,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:27,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:27,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:27,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:47:27,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:27,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 14:47:27,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:27,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:27,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:47:27,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:27,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:47:27,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:47:27,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-25 14:47:27,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:27,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:27,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:27,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:27,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:27,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 14:47:27,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:27,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:27,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:27,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:27,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:27,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:27,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-25 14:47:27,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:27,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:27,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:27,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:27,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:27,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 14:47:27,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:27,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:27,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:27,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:27,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:27,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:27,088 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 14:47:27,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1571050677] [2020-09-25 14:47:27,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:47:27,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:47:27,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568601999] [2020-09-25 14:47:27,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:47:27,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:47:27,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:47:27,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:47:27,094 INFO L87 Difference]: Start difference. First operand 60 states and 65 transitions. Second operand 4 states. [2020-09-25 14:47:27,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:47:27,297 INFO L93 Difference]: Finished difference Result 91 states and 97 transitions. [2020-09-25 14:47:27,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 14:47:27,299 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-09-25 14:47:27,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:47:27,301 INFO L225 Difference]: With dead ends: 91 [2020-09-25 14:47:27,303 INFO L226 Difference]: Without dead ends: 72 [2020-09-25 14:47:27,305 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:47:27,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-25 14:47:27,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 60. [2020-09-25 14:47:27,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-25 14:47:27,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2020-09-25 14:47:27,331 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 34 [2020-09-25 14:47:27,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:47:27,332 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2020-09-25 14:47:27,333 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:47:27,333 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2020-09-25 14:47:27,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 14:47:27,335 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:47:27,335 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:47:27,336 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:47:27,336 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:47:27,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:47:27,336 INFO L82 PathProgramCache]: Analyzing trace with hash 1811286385, now seen corresponding path program 1 times [2020-09-25 14:47:27,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:47:27,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [714980025] [2020-09-25 14:47:27,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:47:27,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:27,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:27,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:28,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:28,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:32,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:32,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 14:47:32,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:47:32,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 14:47:32,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:32,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:32,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 14:47:32,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-25 14:47:32,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 14:47:32,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:32,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:47:32,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:32,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:32,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:32,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:47:32,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:32,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:47:32,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:32,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:32,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:47:32,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:32,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:47:32,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 14:47:32,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-25 14:47:32,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:32,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:32,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:32,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:32,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:32,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 14:47:32,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:32,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:32,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:47:32,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:32,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:47:32,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:32,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-25 14:47:32,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:32,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:32,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:32,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:32,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:32,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 14:47:32,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:32,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:32,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:47:32,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:32,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:47:32,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:32,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-25 14:47:32,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:32,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:32,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:32,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:32,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:32,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 14:47:32,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:32,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:32,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:32,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:32,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:32,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:32,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-25 14:47:32,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:32,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:32,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:32,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:32,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:32,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 14:47:32,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:32,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:32,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:32,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:32,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:32,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:32,755 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-25 14:47:32,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [714980025] [2020-09-25 14:47:32,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:47:32,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 14:47:32,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170035265] [2020-09-25 14:47:32,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 14:47:32,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:47:32,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 14:47:32,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:47:32,759 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand 12 states. [2020-09-25 14:47:33,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:47:33,312 INFO L93 Difference]: Finished difference Result 84 states and 89 transitions. [2020-09-25 14:47:33,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 14:47:33,314 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 52 [2020-09-25 14:47:33,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:47:33,315 INFO L225 Difference]: With dead ends: 84 [2020-09-25 14:47:33,316 INFO L226 Difference]: Without dead ends: 82 [2020-09-25 14:47:33,317 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2020-09-25 14:47:33,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-09-25 14:47:33,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 59. [2020-09-25 14:47:33,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-09-25 14:47:33,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 62 transitions. [2020-09-25 14:47:33,341 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 62 transitions. Word has length 52 [2020-09-25 14:47:33,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:47:33,342 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 62 transitions. [2020-09-25 14:47:33,342 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 14:47:33,342 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 62 transitions. [2020-09-25 14:47:33,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 14:47:33,344 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:47:33,344 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:47:33,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:47:33,344 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:47:33,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:47:33,345 INFO L82 PathProgramCache]: Analyzing trace with hash 2082234165, now seen corresponding path program 1 times [2020-09-25 14:47:33,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:47:33,346 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [582550371] [2020-09-25 14:47:33,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:47:33,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:33,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:34,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:36,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:36,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-25 14:47:36,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:47:36,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2701 [2020-09-25 14:47:36,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:36,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:36,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 14:47:36,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-09-25 14:47:36,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 14:47:36,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:36,945 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 49 [2020-09-25 14:47:56,564 WARN L193 SmtUtils]: Spent 19.57 s on a formula simplification. DAG size of input: 139 DAG size of output: 87 [2020-09-25 14:48:32,657 WARN L193 SmtUtils]: Spent 36.02 s on a formula simplification. DAG size of input: 147 DAG size of output: 100