/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=0.1 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label55.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:07:44,109 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:07:44,114 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:07:44,162 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:07:44,162 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:07:44,173 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:07:44,176 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:07:44,180 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:07:44,183 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:07:44,187 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:07:44,189 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:07:44,190 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:07:44,190 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:07:44,193 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:07:44,197 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:07:44,199 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:07:44,201 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:07:44,202 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:07:44,203 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:07:44,213 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:07:44,215 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:07:44,216 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:07:44,217 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:07:44,218 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:07:44,221 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:07:44,222 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:07:44,222 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:07:44,225 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:07:44,226 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:07:44,227 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:07:44,227 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:07:44,228 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:07:44,229 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:07:44,230 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:07:44,231 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:07:44,232 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:07:44,232 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:07:44,233 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:07:44,233 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:07:44,234 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:07:44,236 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:07:44,237 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 10:07:44,268 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:07:44,268 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:07:44,269 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:07:44,270 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:07:44,270 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:07:44,270 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:07:44,270 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:07:44,270 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:07:44,271 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:07:44,271 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:07:44,271 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:07:44,271 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:07:44,271 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:07:44,272 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:07:44,272 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:07:44,272 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:07:44,272 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:07:44,272 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:07:44,273 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:07:44,273 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:07:44,273 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:07:44,273 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:07:44,273 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:07:44,274 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:07:44,274 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:07:44,274 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:07:44,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:07:44,274 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:07:44,274 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:07:44,275 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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;log-additional-information=true; [2020-09-25 10:07:44,727 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:07:44,745 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:07:44,749 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:07:44,751 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:07:44,752 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:07:44,753 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label55.c [2020-09-25 10:07:44,849 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8527f3e00/d04de0a9f38040d59a052697102684ab/FLAG17d193048 [2020-09-25 10:07:45,522 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:07:45,523 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label55.c [2020-09-25 10:07:45,535 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8527f3e00/d04de0a9f38040d59a052697102684ab/FLAG17d193048 [2020-09-25 10:07:45,740 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8527f3e00/d04de0a9f38040d59a052697102684ab [2020-09-25 10:07:45,754 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:07:45,760 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:07:45,761 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:07:45,762 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:07:45,766 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:07:45,767 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:07:45" (1/1) ... [2020-09-25 10:07:45,774 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f78b0b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:45, skipping insertion in model container [2020-09-25 10:07:45,774 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:07:45" (1/1) ... [2020-09-25 10:07:45,784 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:07:45,855 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:07:46,376 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:07:46,383 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:07:46,681 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:07:46,708 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:07:46,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:46 WrapperNode [2020-09-25 10:07:46,709 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:07:46,710 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:07:46,710 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:07:46,710 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:07:46,734 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:46" (1/1) ... [2020-09-25 10:07:46,738 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:46" (1/1) ... [2020-09-25 10:07:46,791 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:46" (1/1) ... [2020-09-25 10:07:46,791 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:46" (1/1) ... [2020-09-25 10:07:46,872 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:46" (1/1) ... [2020-09-25 10:07:46,898 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:46" (1/1) ... [2020-09-25 10:07:46,913 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:46" (1/1) ... [2020-09-25 10:07:46,924 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:07:46,925 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:07:46,926 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:07:46,926 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:07:46,927 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:46" (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 10:07:47,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:07:47,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:07:47,053 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:07:47,053 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:07:47,053 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:07:47,054 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:07:47,055 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:07:47,056 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:07:47,056 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:07:47,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:07:47,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:07:48,742 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:07:48,742 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:07:48,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:07:48 BoogieIcfgContainer [2020-09-25 10:07:48,757 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:07:48,758 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:07:48,758 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:07:48,762 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:07:48,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:07:45" (1/3) ... [2020-09-25 10:07:48,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d6b3b80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:07:48, skipping insertion in model container [2020-09-25 10:07:48,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:46" (2/3) ... [2020-09-25 10:07:48,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d6b3b80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:07:48, skipping insertion in model container [2020-09-25 10:07:48,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:07:48" (3/3) ... [2020-09-25 10:07:48,767 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label55.c [2020-09-25 10:07:48,780 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:07:48,792 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:07:48,815 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:07:48,849 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:07:48,849 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:07:48,849 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:07:48,849 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:07:48,850 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:07:48,850 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:07:48,850 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:07:48,850 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:07:48,883 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 10:07:48,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-09-25 10:07:48,906 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:07:48,908 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:07:48,908 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:07:48,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:07:48,917 INFO L82 PathProgramCache]: Analyzing trace with hash -2144769179, now seen corresponding path program 1 times [2020-09-25 10:07:48,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:07:48,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [424349087] [2020-09-25 10:07:48,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:07:49,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:49,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:49,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:50,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:51,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:53,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:54,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:54,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-25 10:07:54,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:07:54,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 10:07:54,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:54,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:54,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:07:54,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 10:07:54,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 10:07:54,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 10:07:54,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:07:54,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:54,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:54,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:54,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:07:54,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:07:54,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 10:07:54,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:54,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:54,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:07:54,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:54,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 10:07:54,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:54,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:07:54,580 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [424349087] [2020-09-25 10:07:54,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:07:54,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 10:07:54,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065634229] [2020-09-25 10:07:54,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 10:07:54,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:07:54,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 10:07:54,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:07:54,617 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 5 states. [2020-09-25 10:07:56,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:07:56,842 INFO L93 Difference]: Finished difference Result 1270 states and 1669 transitions. [2020-09-25 10:07:56,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:07:56,845 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-09-25 10:07:56,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:07:56,870 INFO L225 Difference]: With dead ends: 1270 [2020-09-25 10:07:56,871 INFO L226 Difference]: Without dead ends: 696 [2020-09-25 10:07:56,883 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:07:56,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-09-25 10:07:56,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 603. [2020-09-25 10:07:56,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 10:07:56,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 731 transitions. [2020-09-25 10:07:57,001 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 731 transitions. Word has length 139 [2020-09-25 10:07:57,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:07:57,003 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 731 transitions. [2020-09-25 10:07:57,003 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 10:07:57,004 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 731 transitions. [2020-09-25 10:07:57,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-25 10:07:57,022 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:07:57,023 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:07:57,023 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:07:57,023 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:07:57,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:07:57,025 INFO L82 PathProgramCache]: Analyzing trace with hash 473875351, now seen corresponding path program 1 times [2020-09-25 10:07:57,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:07:57,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [212987596] [2020-09-25 10:07:57,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:07:57,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:57,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:57,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:57,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:57,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:57,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:59,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:59,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:00,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:00,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:02,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:02,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-09-25 10:08:02,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 10:08:02,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-09-25 10:08:02,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:02,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:02,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:08:02,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 10:08:02,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-09-25 10:08:02,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:08:02,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:08:02,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:02,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:02,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:02,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:08:02,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:08:02,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 10:08:02,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:02,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:02,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:08:02,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:08:02,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:08:02,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 10:08:02,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 10:08:02,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:02,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:02,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:02,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:08:02,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:08:02,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 10:08:02,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:02,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:02,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:08:02,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:08:02,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:08:02,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:08:02,440 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:08:02,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [212987596] [2020-09-25 10:08:02,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:08:02,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 10:08:02,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803689195] [2020-09-25 10:08:02,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 10:08:02,445 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:08:02,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 10:08:02,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:08:02,446 INFO L87 Difference]: Start difference. First operand 603 states and 731 transitions. Second operand 5 states. [2020-09-25 10:08:04,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:08:04,885 INFO L93 Difference]: Finished difference Result 1597 states and 2001 transitions. [2020-09-25 10:08:04,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 10:08:04,888 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-09-25 10:08:04,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:08:04,896 INFO L225 Difference]: With dead ends: 1597 [2020-09-25 10:08:04,896 INFO L226 Difference]: Without dead ends: 1018 [2020-09-25 10:08:04,900 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:08:04,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1018 states. [2020-09-25 10:08:04,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1018 to 758. [2020-09-25 10:08:04,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 758 states. [2020-09-25 10:08:04,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 758 states to 758 states and 933 transitions. [2020-09-25 10:08:04,941 INFO L78 Accepts]: Start accepts. Automaton has 758 states and 933 transitions. Word has length 161 [2020-09-25 10:08:04,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:08:04,942 INFO L479 AbstractCegarLoop]: Abstraction has 758 states and 933 transitions. [2020-09-25 10:08:04,942 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 10:08:04,942 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states and 933 transitions. [2020-09-25 10:08:04,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-09-25 10:08:04,947 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:08:04,947 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:08:04,948 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:08:04,948 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:08:04,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:08:04,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1701451615, now seen corresponding path program 1 times [2020-09-25 10:08:04,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:08:04,949 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1362214100] [2020-09-25 10:08:04,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:08:04,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:04,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:05,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:05,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:06,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:06,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:08,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:09,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:10,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:10,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-25 10:08:10,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:08:10,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-09-25 10:08:10,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:10,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:10,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-25 10:08:10,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 10:08:10,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 10:08:10,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:08:10,841 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2020-09-25 10:08:11,041 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 46 [2020-09-25 10:08:11,379 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 57 [2020-09-25 10:08:11,732 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 56 [2020-09-25 10:08:12,030 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 51 [2020-09-25 10:08:12,400 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 51 [2020-09-25 10:08:12,845 WARN L193 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 50 [2020-09-25 10:08:13,323 WARN L193 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 49 [2020-09-25 10:08:13,668 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 46 [2020-09-25 10:08:13,964 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 43 [2020-09-25 10:08:14,250 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 40 [2020-09-25 10:08:14,608 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 40 [2020-09-25 10:08:14,811 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 35 [2020-09-25 10:08:14,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:08:14,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:14,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:14,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:14,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:08:14,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:08:14,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-25 10:08:14,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:14,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:14,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:08:14,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:08:14,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 10:08:14,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:08:15,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 10:08:15,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:15,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:15,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:15,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 10:08:15,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:08:15,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-09-25 10:08:15,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:15,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:15,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:08:15,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:08:15,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 10:08:15,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:08:15,676 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 7 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:08:15,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1362214100] [2020-09-25 10:08:15,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:08:15,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-09-25 10:08:15,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933881904] [2020-09-25 10:08:15,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-09-25 10:08:15,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:08:15,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-09-25 10:08:15,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=525, Unknown=0, NotChecked=0, Total=650 [2020-09-25 10:08:15,681 INFO L87 Difference]: Start difference. First operand 758 states and 933 transitions. Second operand 26 states. [2020-09-25 10:08:16,098 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2020-09-25 10:08:17,058 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 66 [2020-09-25 10:08:17,241 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2020-09-25 10:08:18,174 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 50 [2020-09-25 10:08:18,574 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 98 [2020-09-25 10:08:19,060 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 118 [2020-09-25 10:08:19,641 WARN L193 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 124 [2020-09-25 10:08:20,318 WARN L193 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 122 [2020-09-25 10:08:21,431 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 119 [2020-09-25 10:08:22,043 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 74 [2020-09-25 10:08:22,717 WARN L193 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 119 [2020-09-25 10:08:23,152 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 81 [2020-09-25 10:08:24,185 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 117 [2020-09-25 10:08:24,900 WARN L193 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 116 [2020-09-25 10:08:25,282 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 71 [2020-09-25 10:08:25,887 WARN L193 SmtUtils]: Spent 394.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 113 [2020-09-25 10:08:26,436 WARN L193 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 109 [2020-09-25 10:08:26,990 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 81 [2020-09-25 10:08:27,495 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 108 [2020-09-25 10:08:28,372 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 108 [2020-09-25 10:08:28,878 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 101 [2020-09-25 10:08:29,536 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 60 [2020-09-25 10:08:31,104 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2020-09-25 10:08:31,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:08:31,341 INFO L93 Difference]: Finished difference Result 3040 states and 4141 transitions. [2020-09-25 10:08:31,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-09-25 10:08:31,342 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 176 [2020-09-25 10:08:31,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:08:31,367 INFO L225 Difference]: With dead ends: 3040 [2020-09-25 10:08:31,367 INFO L226 Difference]: Without dead ends: 2299 [2020-09-25 10:08:31,376 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 659 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=778, Invalid=2084, Unknown=0, NotChecked=0, Total=2862 [2020-09-25 10:08:31,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2299 states. [2020-09-25 10:08:31,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2299 to 2173. [2020-09-25 10:08:31,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2173 states. [2020-09-25 10:08:31,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2173 states to 2173 states and 2772 transitions. [2020-09-25 10:08:31,504 INFO L78 Accepts]: Start accepts. Automaton has 2173 states and 2772 transitions. Word has length 176 [2020-09-25 10:08:31,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:08:31,506 INFO L479 AbstractCegarLoop]: Abstraction has 2173 states and 2772 transitions. [2020-09-25 10:08:31,506 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-09-25 10:08:31,506 INFO L276 IsEmpty]: Start isEmpty. Operand 2173 states and 2772 transitions. [2020-09-25 10:08:31,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-09-25 10:08:31,521 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:08:31,522 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:08:31,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:08:31,522 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:08:31,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:08:31,523 INFO L82 PathProgramCache]: Analyzing trace with hash -1308161936, now seen corresponding path program 1 times [2020-09-25 10:08:31,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:08:31,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [189200021] [2020-09-25 10:08:31,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:08:31,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:31,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:31,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:31,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:31,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:32,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:32,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:36,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:36,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-09-25 10:08:36,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:08:36,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-09-25 10:08:36,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:36,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:36,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:08:36,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 10:08:36,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 10:08:36,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:08:36,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:08:36,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:36,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:36,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:36,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:08:36,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:08:36,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 10:08:36,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:36,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:36,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:08:36,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:08:36,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 10:08:36,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:08:36,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 10:08:36,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:36,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:36,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:36,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:36,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 10:08:36,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:08:36,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 10:08:36,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:36,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:36,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:08:36,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:08:36,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 10:08:36,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:08:36,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 10:08:36,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:36,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:36,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:36,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 10:08:36,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:08:36,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-25 10:08:36,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:36,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:36,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:08:36,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:08:36,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 10:08:36,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0