/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/Problem02_label26.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:09:08,438 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:09:08,443 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:09:08,494 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:09:08,494 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:09:08,507 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:09:08,508 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:09:08,511 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:09:08,514 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:09:08,518 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:09:08,519 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:09:08,521 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:09:08,521 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:09:08,525 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:09:08,528 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:09:08,530 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:09:08,531 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:09:08,533 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:09:08,534 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:09:08,542 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:09:08,545 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:09:08,546 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:09:08,547 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:09:08,549 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:09:08,554 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:09:08,554 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:09:08,554 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:09:08,557 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:09:08,558 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:09:08,561 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:09:08,561 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:09:08,562 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:09:08,563 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:09:08,564 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:09:08,565 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:09:08,565 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:09:08,566 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:09:08,566 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:09:08,567 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:09:08,568 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:09:08,569 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:09:08,570 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 10:09:08,622 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:09:08,622 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:09:08,625 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:09:08,625 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:09:08,625 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:09:08,626 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:09:08,626 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:09:08,626 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:09:08,627 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:09:08,627 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:09:08,628 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:09:08,628 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:09:08,629 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:09:08,629 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:09:08,629 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:09:08,630 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:09:08,630 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:09:08,630 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:09:08,630 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:09:08,631 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:09:08,631 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:09:08,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:09:08,631 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:09:08,631 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:09:08,632 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:09:08,632 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:09:08,632 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:09:08,632 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:09:08,632 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:09:08,633 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 10:09:09,102 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:09:09,129 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:09:09,134 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:09:09,136 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:09:09,137 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:09:09,138 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label26.c [2020-09-25 10:09:09,217 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3c506b1a3/66262641b5cb4c39a67a2fc2c4aface8/FLAG2fa8af54b [2020-09-25 10:09:09,920 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:09:09,921 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label26.c [2020-09-25 10:09:09,941 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3c506b1a3/66262641b5cb4c39a67a2fc2c4aface8/FLAG2fa8af54b [2020-09-25 10:09:10,087 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3c506b1a3/66262641b5cb4c39a67a2fc2c4aface8 [2020-09-25 10:09:10,104 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:09:10,111 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:09:10,115 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:09:10,115 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:09:10,120 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:09:10,122 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:09:10" (1/1) ... [2020-09-25 10:09:10,128 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c31b5ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:10, skipping insertion in model container [2020-09-25 10:09:10,129 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:09:10" (1/1) ... [2020-09-25 10:09:10,139 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:09:10,214 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:09:10,675 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:09:10,682 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:09:10,895 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:09:10,928 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:09:10,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:10 WrapperNode [2020-09-25 10:09:10,929 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:09:10,930 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:09:10,930 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:09:10,930 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:09:10,944 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:10" (1/1) ... [2020-09-25 10:09:10,944 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:10" (1/1) ... [2020-09-25 10:09:10,967 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:10" (1/1) ... [2020-09-25 10:09:10,968 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:10" (1/1) ... [2020-09-25 10:09:11,013 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:10" (1/1) ... [2020-09-25 10:09:11,031 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:10" (1/1) ... [2020-09-25 10:09:11,042 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:10" (1/1) ... [2020-09-25 10:09:11,053 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:09:11,054 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:09:11,054 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:09:11,054 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:09:11,055 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:10" (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 10:09:11,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:09:11,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:09:11,135 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:09:11,135 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:09:11,135 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:09:11,135 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:09:11,135 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:09:11,136 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:09:11,136 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:09:11,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:09:11,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:09:12,578 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:09:12,579 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:09:12,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:09:12 BoogieIcfgContainer [2020-09-25 10:09:12,596 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:09:12,599 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:09:12,599 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:09:12,603 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:09:12,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:09:10" (1/3) ... [2020-09-25 10:09:12,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17dd8018 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:09:12, skipping insertion in model container [2020-09-25 10:09:12,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:10" (2/3) ... [2020-09-25 10:09:12,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17dd8018 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:09:12, skipping insertion in model container [2020-09-25 10:09:12,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:09:12" (3/3) ... [2020-09-25 10:09:12,609 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label26.c [2020-09-25 10:09:12,622 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:09:12,639 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:09:12,665 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:09:12,706 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:09:12,707 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:09:12,708 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:09:12,708 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:09:12,708 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:09:12,708 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:09:12,708 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:09:12,708 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:09:12,752 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 10:09:12,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-09-25 10:09:12,775 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:09:12,776 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, 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 10:09:12,777 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:09:12,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:09:12,785 INFO L82 PathProgramCache]: Analyzing trace with hash 1114585457, now seen corresponding path program 1 times [2020-09-25 10:09:12,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:09:12,796 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1990559666] [2020-09-25 10:09:12,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:09:13,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:13,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:13,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:13,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:14,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:16,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:17,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:17,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:18,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:18,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-09-25 10:09:18,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:09:18,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 10:09:18,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:18,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:18,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:09:18,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 10:09:18,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-09-25 10:09:18,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 10:09:18,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:09:18,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:18,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:18,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:18,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:09:18,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:09:18,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 10:09:18,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:18,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:18,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:09:18,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:09:18,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 10:09:18,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:09:18,484 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 10:09:18,486 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1990559666] [2020-09-25 10:09:18,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:09:18,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:09:18,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052010617] [2020-09-25 10:09:18,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:09:18,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:09:18,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:09:18,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:09:18,522 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 10:09:20,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:09:20,733 INFO L93 Difference]: Finished difference Result 1205 states and 1651 transitions. [2020-09-25 10:09:20,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:09:20,736 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 162 [2020-09-25 10:09:20,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:09:20,764 INFO L225 Difference]: With dead ends: 1205 [2020-09-25 10:09:20,764 INFO L226 Difference]: Without dead ends: 627 [2020-09-25 10:09:20,775 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:09:20,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2020-09-25 10:09:20,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 613. [2020-09-25 10:09:20,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 613 states. [2020-09-25 10:09:20,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 759 transitions. [2020-09-25 10:09:20,879 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 759 transitions. Word has length 162 [2020-09-25 10:09:20,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:09:20,880 INFO L479 AbstractCegarLoop]: Abstraction has 613 states and 759 transitions. [2020-09-25 10:09:20,880 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:09:20,880 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 759 transitions. [2020-09-25 10:09:20,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-09-25 10:09:20,888 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:09:20,888 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:09:20,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:09:20,889 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:09:20,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:09:20,889 INFO L82 PathProgramCache]: Analyzing trace with hash 156587372, now seen corresponding path program 1 times [2020-09-25 10:09:20,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:09:20,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [713825056] [2020-09-25 10:09:20,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:09:20,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:20,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:21,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:21,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:22,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:24,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:25,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:25,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:25,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:25,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:25,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-09-25 10:09:25,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:09:25,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-09-25 10:09:25,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:25,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:25,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:09:25,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 10:09:25,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-09-25 10:09:25,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-09-25 10:09:26,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:09:26,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:26,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:26,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:26,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:09:26,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:09:26,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 10:09:26,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:26,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:26,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:09:26,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:09:26,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 10:09:26,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:26,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:09:26,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:26,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:26,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:26,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:26,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 10:09:26,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:09:26,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-09-25 10:09:26,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:26,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:26,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:09:26,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:09:26,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 10:09:26,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:26,794 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:09:26,795 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [713825056] [2020-09-25 10:09:26,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:09:26,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 10:09:26,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666554344] [2020-09-25 10:09:26,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 10:09:26,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:09:26,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 10:09:26,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:09:26,802 INFO L87 Difference]: Start difference. First operand 613 states and 759 transitions. Second operand 11 states. [2020-09-25 10:09:29,431 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2020-09-25 10:09:30,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:09:30,154 INFO L93 Difference]: Finished difference Result 1426 states and 1874 transitions. [2020-09-25 10:09:30,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 10:09:30,155 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 196 [2020-09-25 10:09:30,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:09:30,168 INFO L225 Difference]: With dead ends: 1426 [2020-09-25 10:09:30,168 INFO L226 Difference]: Without dead ends: 689 [2020-09-25 10:09:30,173 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=129, Invalid=251, Unknown=0, NotChecked=0, Total=380 [2020-09-25 10:09:30,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2020-09-25 10:09:30,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 521. [2020-09-25 10:09:30,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 521 states. [2020-09-25 10:09:30,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 585 transitions. [2020-09-25 10:09:30,230 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 585 transitions. Word has length 196 [2020-09-25 10:09:30,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:09:30,230 INFO L479 AbstractCegarLoop]: Abstraction has 521 states and 585 transitions. [2020-09-25 10:09:30,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 10:09:30,231 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 585 transitions. [2020-09-25 10:09:30,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-09-25 10:09:30,234 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:09:30,234 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:09:30,235 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:09:30,235 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:09:30,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:09:30,235 INFO L82 PathProgramCache]: Analyzing trace with hash 1036654265, now seen corresponding path program 1 times [2020-09-25 10:09:30,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:09:30,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1039987995] [2020-09-25 10:09:30,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:09:30,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:30,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:30,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:30,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:30,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:32,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:32,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:32,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:33,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:34,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:34,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:35,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:35,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:35,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-09-25 10:09:35,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 10:09:35,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 10:09:35,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:35,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:35,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:09:35,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 10:09:35,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-09-25 10:09:35,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:35,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:09:35,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:35,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:35,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:35,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:09:35,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:09:35,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 10:09:35,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:35,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:35,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:09:35,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:09:35,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 10:09:35,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:35,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:09:35,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:35,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:35,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:35,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:35,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 10:09:35,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:09:35,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-09-25 10:09:35,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:35,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:35,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:09:35,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:09:35,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 10:09:35,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:36,256 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:09:36,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1039987995] [2020-09-25 10:09:36,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:09:36,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 10:09:36,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289013353] [2020-09-25 10:09:36,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 10:09:36,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:09:36,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 10:09:36,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:09:36,274 INFO L87 Difference]: Start difference. First operand 521 states and 585 transitions. Second operand 11 states. [2020-09-25 10:09:39,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:09:39,717 INFO L93 Difference]: Finished difference Result 1114 states and 1187 transitions. [2020-09-25 10:09:39,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 10:09:39,722 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 200 [2020-09-25 10:09:39,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:09:39,726 INFO L225 Difference]: With dead ends: 1114 [2020-09-25 10:09:39,726 INFO L226 Difference]: Without dead ends: 514 [2020-09-25 10:09:39,728 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=135, Invalid=245, Unknown=0, NotChecked=0, Total=380 [2020-09-25 10:09:39,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2020-09-25 10:09:39,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 500. [2020-09-25 10:09:39,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 500 states. [2020-09-25 10:09:39,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 560 transitions. [2020-09-25 10:09:39,757 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 560 transitions. Word has length 200 [2020-09-25 10:09:39,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:09:39,757 INFO L479 AbstractCegarLoop]: Abstraction has 500 states and 560 transitions. [2020-09-25 10:09:39,760 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 10:09:39,760 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 560 transitions. [2020-09-25 10:09:39,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-09-25 10:09:39,764 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:09:39,764 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, 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] [2020-09-25 10:09:39,764 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:09:39,765 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:09:39,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:09:39,765 INFO L82 PathProgramCache]: Analyzing trace with hash -1815463774, now seen corresponding path program 1 times [2020-09-25 10:09:39,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:09:39,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [271965749] [2020-09-25 10:09:39,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:09:39,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:39,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:39,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:40,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:40,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:41,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:43,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:44,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:44,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-09-25 10:09:44,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:09:44,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-09-25 10:09:44,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:44,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:44,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 10:09:44,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 10:09:44,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 236 [2020-09-25 10:09:44,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:45,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:09:45,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:45,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:45,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:45,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:09:45,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:09:45,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 10:09:45,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:45,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:45,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:09:45,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:09:45,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 10:09:45,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 10:09:45,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:09:45,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:45,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:45,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:45,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:45,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 10:09:45,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:09:45,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 743 [2020-09-25 10:09:45,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:45,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:45,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:09:45,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:09:45,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 10:09:45,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:46,156 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:09:46,156 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [271965749] [2020-09-25 10:09:46,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:09:46,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 10:09:46,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464216687] [2020-09-25 10:09:46,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 10:09:46,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:09:46,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 10:09:46,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-25 10:09:46,161 INFO L87 Difference]: Start difference. First operand 500 states and 560 transitions. Second operand 12 states. [2020-09-25 10:09:50,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:09:50,850 INFO L93 Difference]: Finished difference Result 2037 states and 2503 transitions. [2020-09-25 10:09:50,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-25 10:09:50,851 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 243 [2020-09-25 10:09:50,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:09:50,863 INFO L225 Difference]: With dead ends: 2037 [2020-09-25 10:09:50,863 INFO L226 Difference]: Without dead ends: 1559 [2020-09-25 10:09:50,868 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=199, Invalid=557, Unknown=0, NotChecked=0, Total=756 [2020-09-25 10:09:50,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1559 states. [2020-09-25 10:09:50,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1559 to 1046. [2020-09-25 10:09:50,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1046 states. [2020-09-25 10:09:50,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1046 states to 1046 states and 1212 transitions. [2020-09-25 10:09:50,943 INFO L78 Accepts]: Start accepts. Automaton has 1046 states and 1212 transitions. Word has length 243 [2020-09-25 10:09:50,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:09:50,945 INFO L479 AbstractCegarLoop]: Abstraction has 1046 states and 1212 transitions. [2020-09-25 10:09:50,945 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 10:09:50,945 INFO L276 IsEmpty]: Start isEmpty. Operand 1046 states and 1212 transitions. [2020-09-25 10:09:50,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-09-25 10:09:50,952 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:09:50,952 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-09-25 10:09:50,952 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:09:50,953 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:09:50,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:09:50,953 INFO L82 PathProgramCache]: Analyzing trace with hash 1401964617, now seen corresponding path program 1 times [2020-09-25 10:09:50,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:09:50,954 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [292727320] [2020-09-25 10:09:50,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:09:50,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:51,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:51,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:51,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:53,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:54,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:54,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:55,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:55,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-09-25 10:09:55,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:09:55,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 10:09:55,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:55,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:55,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 10:09:55,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 10:09:55,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 254 [2020-09-25 10:09:55,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:56,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:09:56,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:56,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:56,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:56,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:09:56,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:09:56,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 10:09:56,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:56,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:56,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:09:56,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:09:56,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 10:09:56,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:56,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:09:56,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:56,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:56,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:56,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 10:09:56,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:09:56,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-25 10:09:56,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:56,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:56,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:09:56,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:09:56,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 10:09:56,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:56,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 10:09:56,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat