/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=0.3 --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/Problem10_label07.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:26:07,470 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:26:07,476 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:26:07,521 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:26:07,522 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:26:07,530 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:26:07,532 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:26:07,536 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:26:07,538 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:26:07,542 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:26:07,543 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:26:07,544 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:26:07,544 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:26:07,547 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:26:07,551 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:26:07,553 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:26:07,554 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:26:07,556 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:26:07,557 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:26:07,566 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:26:07,568 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:26:07,569 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:26:07,571 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:26:07,571 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:26:07,576 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:26:07,576 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:26:07,576 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:26:07,583 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:26:07,583 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:26:07,586 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:26:07,586 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:26:07,587 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:26:07,588 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:26:07,589 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:26:07,591 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:26:07,591 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:26:07,592 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:26:07,592 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:26:07,592 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:26:07,593 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:26:07,595 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:26:07,596 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 12:26:07,643 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:26:07,643 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:26:07,646 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:26:07,646 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:26:07,646 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:26:07,646 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:26:07,647 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:26:07,647 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:26:07,648 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:26:07,648 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:26:07,649 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:26:07,649 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:26:07,649 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:26:07,650 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:26:07,650 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:26:07,650 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:26:07,650 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:26:07,651 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:26:07,651 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:26:07,651 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:26:07,651 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:26:07,651 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:26:07,652 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:26:07,652 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:26:07,652 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:26:07,652 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:26:07,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:26:07,653 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:26:07,653 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:26:07,653 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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;log-additional-information=true; [2020-09-25 12:26:08,145 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:26:08,165 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:26:08,170 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:26:08,172 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:26:08,172 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:26:08,174 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label07.c [2020-09-25 12:26:08,263 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/70440e848/be5369cf2e6a462cab02ec18487e555c/FLAGfae1b0f46 [2020-09-25 12:26:08,904 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:26:08,905 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label07.c [2020-09-25 12:26:08,919 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/70440e848/be5369cf2e6a462cab02ec18487e555c/FLAGfae1b0f46 [2020-09-25 12:26:09,143 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/70440e848/be5369cf2e6a462cab02ec18487e555c [2020-09-25 12:26:09,158 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:26:09,166 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:26:09,170 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:26:09,170 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:26:09,174 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:26:09,176 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:26:09" (1/1) ... [2020-09-25 12:26:09,181 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ad15a05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:09, skipping insertion in model container [2020-09-25 12:26:09,181 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:26:09" (1/1) ... [2020-09-25 12:26:09,192 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:26:09,262 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:26:09,748 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:26:09,755 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:26:09,958 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:26:09,977 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:26:09,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:09 WrapperNode [2020-09-25 12:26:09,980 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:26:09,980 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:26:09,980 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:26:09,981 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:26:09,997 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:09" (1/1) ... [2020-09-25 12:26:09,997 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:09" (1/1) ... [2020-09-25 12:26:10,020 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:09" (1/1) ... [2020-09-25 12:26:10,020 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:09" (1/1) ... [2020-09-25 12:26:10,058 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:09" (1/1) ... [2020-09-25 12:26:10,075 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:09" (1/1) ... [2020-09-25 12:26:10,087 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:09" (1/1) ... [2020-09-25 12:26:10,105 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:26:10,106 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:26:10,106 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:26:10,106 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:26:10,108 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:09" (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 12:26:10,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:26:10,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:26:10,187 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 12:26:10,187 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:26:10,187 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 12:26:10,187 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:26:10,187 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:26:10,188 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:26:10,188 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:26:10,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:26:10,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:26:11,591 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:26:11,591 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:26:11,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:26:11 BoogieIcfgContainer [2020-09-25 12:26:11,601 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:26:11,602 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:26:11,602 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:26:11,607 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:26:11,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:26:09" (1/3) ... [2020-09-25 12:26:11,609 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b9dacaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:26:11, skipping insertion in model container [2020-09-25 12:26:11,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:09" (2/3) ... [2020-09-25 12:26:11,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b9dacaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:26:11, skipping insertion in model container [2020-09-25 12:26:11,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:26:11" (3/3) ... [2020-09-25 12:26:11,612 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label07.c [2020-09-25 12:26:11,627 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:26:11,639 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:26:11,666 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:26:11,708 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:26:11,708 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:26:11,708 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:26:11,709 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:26:11,709 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:26:11,709 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:26:11,709 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:26:11,709 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:26:11,747 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 12:26:11,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-25 12:26:11,760 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:11,762 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] [2020-09-25 12:26:11,762 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:11,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:11,771 INFO L82 PathProgramCache]: Analyzing trace with hash -843476993, now seen corresponding path program 1 times [2020-09-25 12:26:11,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:11,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1939204010] [2020-09-25 12:26:11,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:11,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:12,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:12,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:12,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:13,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:13,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-25 12:26:13,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:26:13,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1036 [2020-09-25 12:26:13,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:13,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:13,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:26:13,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:26:13,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 12:26:13,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-09-25 12:26:13,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:26:13,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:13,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:13,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:13,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:26:13,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:13,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 12:26:13,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:13,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:13,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:26:13,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:13,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:26:13,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:13,317 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 12:26:13,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1939204010] [2020-09-25 12:26:13,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:26:13,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 12:26:13,322 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266005399] [2020-09-25 12:26:13,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:26:13,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:26:13,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:26:13,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:26:13,354 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-09-25 12:26:16,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:26:16,134 INFO L93 Difference]: Finished difference Result 1226 states and 1798 transitions. [2020-09-25 12:26:16,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 12:26:16,139 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-09-25 12:26:16,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:26:16,180 INFO L225 Difference]: With dead ends: 1226 [2020-09-25 12:26:16,180 INFO L226 Difference]: Without dead ends: 707 [2020-09-25 12:26:16,194 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:26:16,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2020-09-25 12:26:16,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 695. [2020-09-25 12:26:16,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-25 12:26:16,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 902 transitions. [2020-09-25 12:26:16,319 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 902 transitions. Word has length 64 [2020-09-25 12:26:16,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:26:16,320 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 902 transitions. [2020-09-25 12:26:16,320 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:26:16,320 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 902 transitions. [2020-09-25 12:26:16,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-25 12:26:16,330 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:16,331 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, 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] [2020-09-25 12:26:16,331 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:26:16,331 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:16,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:16,332 INFO L82 PathProgramCache]: Analyzing trace with hash -685131667, now seen corresponding path program 1 times [2020-09-25 12:26:16,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:16,333 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1464373436] [2020-09-25 12:26:16,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:16,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:16,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:16,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:16,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:17,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:18,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:19,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:19,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:19,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:21,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:21,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-09-25 12:26:21,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 12:26:21,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 12:26:21,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:21,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:21,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:26:21,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:26:21,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-09-25 12:26:21,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:21,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:26:21,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:21,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:21,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:21,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:26:21,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:21,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 12:26:21,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:21,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:21,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:26:21,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:21,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:26:21,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:21,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:26:21,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:21,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:21,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:21,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 12:26:21,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:21,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-09-25 12:26:21,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:21,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:21,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:26:21,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:26:21,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 12:26:21,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:21,842 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 7 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:26:21,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1464373436] [2020-09-25 12:26:21,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:26:21,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 12:26:21,844 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26375339] [2020-09-25 12:26:21,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 12:26:21,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:26:21,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 12:26:21,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:26:21,847 INFO L87 Difference]: Start difference. First operand 695 states and 902 transitions. Second operand 8 states. [2020-09-25 12:26:25,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:26:25,002 INFO L93 Difference]: Finished difference Result 2530 states and 3596 transitions. [2020-09-25 12:26:25,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 12:26:25,003 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 153 [2020-09-25 12:26:25,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:26:25,020 INFO L225 Difference]: With dead ends: 2530 [2020-09-25 12:26:25,020 INFO L226 Difference]: Without dead ends: 1850 [2020-09-25 12:26:25,026 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-09-25 12:26:25,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1850 states. [2020-09-25 12:26:25,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1850 to 1367. [2020-09-25 12:26:25,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1367 states. [2020-09-25 12:26:25,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1367 states to 1367 states and 1804 transitions. [2020-09-25 12:26:25,104 INFO L78 Accepts]: Start accepts. Automaton has 1367 states and 1804 transitions. Word has length 153 [2020-09-25 12:26:25,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:26:25,105 INFO L479 AbstractCegarLoop]: Abstraction has 1367 states and 1804 transitions. [2020-09-25 12:26:25,106 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 12:26:25,106 INFO L276 IsEmpty]: Start isEmpty. Operand 1367 states and 1804 transitions. [2020-09-25 12:26:25,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 12:26:25,112 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:25,113 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, 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] [2020-09-25 12:26:25,113 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:26:25,113 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:25,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:25,114 INFO L82 PathProgramCache]: Analyzing trace with hash -188026709, now seen corresponding path program 1 times [2020-09-25 12:26:25,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:25,115 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [655528269] [2020-09-25 12:26:25,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:25,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:25,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:25,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:26,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:26,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:27,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:27,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:28,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:30,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:30,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-25 12:26:30,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:26:30,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 12:26:30,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:30,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:30,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:26:30,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:26:30,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 12:26:30,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 12:26:30,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:26:30,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:30,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:30,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:30,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:26:30,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:30,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 12:26:30,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:30,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:30,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:26:30,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:30,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:26:30,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:30,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:26:30,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:30,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:30,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:30,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 12:26:30,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:30,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-09-25 12:26:30,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:30,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:30,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:26:30,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:26:30,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 12:26:30,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:30,528 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:26:30,528 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [655528269] [2020-09-25 12:26:30,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:26:30,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 12:26:30,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787357083] [2020-09-25 12:26:30,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:26:30,533 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:26:30,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:26:30,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:26:30,534 INFO L87 Difference]: Start difference. First operand 1367 states and 1804 transitions. Second operand 7 states. [2020-09-25 12:26:32,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:26:32,372 INFO L93 Difference]: Finished difference Result 3431 states and 4659 transitions. [2020-09-25 12:26:32,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 12:26:32,373 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 156 [2020-09-25 12:26:32,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:26:32,395 INFO L225 Difference]: With dead ends: 3431 [2020-09-25 12:26:32,396 INFO L226 Difference]: Without dead ends: 2079 [2020-09-25 12:26:32,403 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-25 12:26:32,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2079 states. [2020-09-25 12:26:32,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2079 to 2020. [2020-09-25 12:26:32,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2020 states. [2020-09-25 12:26:32,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2020 states to 2020 states and 2724 transitions. [2020-09-25 12:26:32,568 INFO L78 Accepts]: Start accepts. Automaton has 2020 states and 2724 transitions. Word has length 156 [2020-09-25 12:26:32,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:26:32,570 INFO L479 AbstractCegarLoop]: Abstraction has 2020 states and 2724 transitions. [2020-09-25 12:26:32,570 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:26:32,570 INFO L276 IsEmpty]: Start isEmpty. Operand 2020 states and 2724 transitions. [2020-09-25 12:26:32,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-25 12:26:32,577 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:32,577 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, 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] [2020-09-25 12:26:32,577 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:26:32,578 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:32,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:32,578 INFO L82 PathProgramCache]: Analyzing trace with hash 370694072, now seen corresponding path program 1 times [2020-09-25 12:26:32,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:32,580 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1193418708] [2020-09-25 12:26:32,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:32,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:32,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:32,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:33,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:33,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:33,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:33,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:37,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:37,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-09-25 12:26:37,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:26:37,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 12:26:37,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:37,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:37,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:26:37,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:26:37,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-09-25 12:26:37,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:37,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:26:37,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:37,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:37,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:37,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:26:37,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:37,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 12:26:37,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:37,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:37,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:26:37,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:37,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:26:37,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:37,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:26:37,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:37,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:38,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:38,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-25 12:26:38,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:38,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-09-25 12:26:38,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:38,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:38,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:26:38,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:26:38,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 12:26:38,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:38,239 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:26:38,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1193418708] [2020-09-25 12:26:38,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:26:38,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 12:26:38,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289033004] [2020-09-25 12:26:38,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:26:38,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:26:38,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:26:38,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:26:38,242 INFO L87 Difference]: Start difference. First operand 2020 states and 2724 transitions. Second operand 7 states. [2020-09-25 12:26:40,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:26:40,590 INFO L93 Difference]: Finished difference Result 3914 states and 5320 transitions. [2020-09-25 12:26:40,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 12:26:40,591 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 193 [2020-09-25 12:26:40,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:26:40,605 INFO L225 Difference]: With dead ends: 3914 [2020-09-25 12:26:40,605 INFO L226 Difference]: Without dead ends: 2059 [2020-09-25 12:26:40,614 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-09-25 12:26:40,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2059 states. [2020-09-25 12:26:40,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2059 to 2030. [2020-09-25 12:26:40,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2030 states. [2020-09-25 12:26:40,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2030 states to 2030 states and 2756 transitions. [2020-09-25 12:26:40,697 INFO L78 Accepts]: Start accepts. Automaton has 2030 states and 2756 transitions. Word has length 193 [2020-09-25 12:26:40,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:26:40,697 INFO L479 AbstractCegarLoop]: Abstraction has 2030 states and 2756 transitions. [2020-09-25 12:26:40,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:26:40,698 INFO L276 IsEmpty]: Start isEmpty. Operand 2030 states and 2756 transitions. [2020-09-25 12:26:40,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-09-25 12:26:40,704 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:40,704 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, 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] [2020-09-25 12:26:40,704 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:26:40,704 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:40,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:40,705 INFO L82 PathProgramCache]: Analyzing trace with hash 858722410, now seen corresponding path program 1 times [2020-09-25 12:26:40,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:40,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [323056530] [2020-09-25 12:26:40,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:40,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:40,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:40,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:40,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:41,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:45,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:45,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-09-25 12:26:45,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:26:45,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-09-25 12:26:45,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:45,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:45,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:26:45,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 12:26:45,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-09-25 12:26:45,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:45,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:26:45,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:45,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:45,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:45,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:26:45,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:45,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 12:26:45,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:45,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:45,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:26:45,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:45,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:26:45,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:45,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:26:45,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:45,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:46,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:46,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 12:26:46,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:46,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-09-25 12:26:46,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:46,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:46,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:26:46,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:26:46,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-09-25 12:26:46,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:46,416 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:26:46,416 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [323056530] [2020-09-25 12:26:46,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:26:46,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 12:26:46,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142987814] [2020-09-25 12:26:46,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 12:26:46,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:26:46,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 12:26:46,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:26:46,418 INFO L87 Difference]: Start difference. First operand 2030 states and 2756 transitions. Second operand 8 states. [2020-09-25 12:26:49,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:26:49,400 INFO L93 Difference]: Finished difference Result 6261 states and 9097 transitions. [2020-09-25 12:26:49,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 12:26:49,401 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 210 [2020-09-25 12:26:49,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:26:49,428 INFO L225 Difference]: With dead ends: 6261 [2020-09-25 12:26:49,428 INFO L226 Difference]: Without dead ends: 4396 [2020-09-25 12:26:49,438 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-25 12:26:49,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4396 states. [2020-09-25 12:26:49,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4396 to 4056. [2020-09-25 12:26:49,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4056 states. [2020-09-25 12:26:49,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4056 states to 4056 states and 5430 transitions. [2020-09-25 12:26:49,581 INFO L78 Accepts]: Start accepts. Automaton has 4056 states and 5430 transitions. Word has length 210 [2020-09-25 12:26:49,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:26:49,582 INFO L479 AbstractCegarLoop]: Abstraction has 4056 states and 5430 transitions. [2020-09-25 12:26:49,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 12:26:49,582 INFO L276 IsEmpty]: Start isEmpty. Operand 4056 states and 5430 transitions. [2020-09-25 12:26:49,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-09-25 12:26:49,587 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:49,588 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-09-25 12:26:49,588 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:26:49,588 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:49,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:49,588 INFO L82 PathProgramCache]: Analyzing trace with hash -1595178403, now seen corresponding path program 1 times [2020-09-25 12:26:49,589 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:49,589 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [497520903] [2020-09-25 12:26:49,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:49,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:49,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:49,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:50,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:50,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:51,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:51,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:51,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:54,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:54,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 245 [2020-09-25 12:26:54,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:26:54,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 12:26:54,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:54,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:54,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:26:54,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:26:54,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-09-25 12:26:54,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:26:54,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:26:54,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:54,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:54,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:54,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:26:54,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:54,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 12:26:54,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:54,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:54,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:26:54,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:54,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:26:54,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:54,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:26:54,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:54,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:54,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:54,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 12:26:54,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:54,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-25 12:26:54,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:54,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:54,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:26:54,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:26:54,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 12:26:54,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:26:54,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 12:26:54,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:54,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:55,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:55,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 12:26:55,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:55,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-09-25 12:26:55,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:55,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:55,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:26:55,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:26:55,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 12:26:55,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:26:55,148 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 169 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 12:26:55,148 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [497520903] [2020-09-25 12:26:55,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:26:55,149 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 12:26:55,149 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856307507] [2020-09-25 12:26:55,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 12:26:55,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:26:55,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 12:26:55,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-09-25 12:26:55,151 INFO L87 Difference]: Start difference. First operand 4056 states and 5430 transitions. Second operand 10 states.