/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=0.4 --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_label36.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:32:19,784 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:32:19,788 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:32:19,837 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:32:19,838 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:32:19,849 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:32:19,851 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:32:19,855 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:32:19,858 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:32:19,862 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:32:19,863 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:32:19,864 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:32:19,865 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:32:19,868 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:32:19,871 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:32:19,873 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:32:19,875 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:32:19,876 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:32:19,878 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:32:19,888 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:32:19,891 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:32:19,892 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:32:19,893 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:32:19,894 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:32:19,897 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:32:19,898 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:32:19,898 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:32:19,901 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:32:19,901 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:32:19,904 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:32:19,904 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:32:19,905 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:32:19,906 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:32:19,907 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:32:19,908 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:32:19,908 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:32:19,909 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:32:19,910 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:32:19,910 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:32:19,911 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:32:19,913 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:32:19,914 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 13:32:19,945 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:32:19,945 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:32:19,947 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:32:19,947 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:32:19,947 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:32:19,947 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:32:19,947 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:32:19,948 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:32:19,948 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:32:19,948 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:32:19,948 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:32:19,948 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:32:19,949 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:32:19,949 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:32:19,949 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:32:19,949 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:32:19,950 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:32:19,950 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:32:19,950 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:32:19,950 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:32:19,950 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:32:19,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:32:19,951 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:32:19,951 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:32:19,951 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:32:19,951 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:32:19,952 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:32:19,952 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:32:19,952 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:32:19,952 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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;log-additional-information=true; [2020-09-25 13:32:20,429 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:32:20,455 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:32:20,461 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:32:20,463 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:32:20,463 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:32:20,464 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label36.c [2020-09-25 13:32:20,555 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dbcd6391f/12566b2be10b4b3aa00e62f63255d343/FLAG408480d35 [2020-09-25 13:32:21,271 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:32:21,272 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label36.c [2020-09-25 13:32:21,289 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dbcd6391f/12566b2be10b4b3aa00e62f63255d343/FLAG408480d35 [2020-09-25 13:32:21,436 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dbcd6391f/12566b2be10b4b3aa00e62f63255d343 [2020-09-25 13:32:21,449 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:32:21,455 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:32:21,459 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:32:21,459 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:32:21,463 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:32:21,464 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:32:21" (1/1) ... [2020-09-25 13:32:21,469 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55e164ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:21, skipping insertion in model container [2020-09-25 13:32:21,469 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:32:21" (1/1) ... [2020-09-25 13:32:21,480 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:32:21,530 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:32:22,072 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:32:22,078 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:32:22,184 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:32:22,207 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:32:22,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:22 WrapperNode [2020-09-25 13:32:22,208 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:32:22,209 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:32:22,209 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:32:22,209 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:32:22,223 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:22" (1/1) ... [2020-09-25 13:32:22,223 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:22" (1/1) ... [2020-09-25 13:32:22,246 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:22" (1/1) ... [2020-09-25 13:32:22,247 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:22" (1/1) ... [2020-09-25 13:32:22,295 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:22" (1/1) ... [2020-09-25 13:32:22,313 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:22" (1/1) ... [2020-09-25 13:32:22,317 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:22" (1/1) ... [2020-09-25 13:32:22,325 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:32:22,325 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:32:22,326 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:32:22,326 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:32:22,331 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:22" (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 13:32:22,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:32:22,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:32:22,416 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:32:22,416 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:32:22,416 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:32:22,416 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:32:22,416 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:32:22,416 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:32:22,417 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:32:22,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:32:22,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:32:23,719 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:32:23,720 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:32:23,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:32:23 BoogieIcfgContainer [2020-09-25 13:32:23,737 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:32:23,740 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:32:23,740 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:32:23,744 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:32:23,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:32:21" (1/3) ... [2020-09-25 13:32:23,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c1c64d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:32:23, skipping insertion in model container [2020-09-25 13:32:23,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:22" (2/3) ... [2020-09-25 13:32:23,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c1c64d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:32:23, skipping insertion in model container [2020-09-25 13:32:23,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:32:23" (3/3) ... [2020-09-25 13:32:23,750 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label36.c [2020-09-25 13:32:23,762 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:32:23,779 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:32:23,803 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:32:23,848 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:32:23,848 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:32:23,848 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:32:23,848 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:32:23,849 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:32:23,849 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:32:23,849 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:32:23,849 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:32:23,884 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 13:32:23,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-09-25 13:32:23,909 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:32:23,911 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] [2020-09-25 13:32:23,911 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:32:23,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:32:23,920 INFO L82 PathProgramCache]: Analyzing trace with hash -404902623, now seen corresponding path program 1 times [2020-09-25 13:32:23,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:32:23,931 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1400466314] [2020-09-25 13:32:23,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:32:24,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:24,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:24,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:25,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:25,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:26,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:26,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:27,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:29,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:29,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-25 13:32:29,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:32:29,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-09-25 13:32:29,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:29,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:29,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:32:29,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 13:32:29,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-09-25 13:32:29,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 13:32:29,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:32:29,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:29,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:29,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:29,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:32:29,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:29,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-25 13:32:29,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:29,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:29,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:32:29,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:29,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 13:32:29,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:32:29,630 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 13:32:29,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1400466314] [2020-09-25 13:32:29,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:32:29,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:32:29,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034608471] [2020-09-25 13:32:29,645 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:32:29,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:32:29,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:32:29,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:32:29,667 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 13:32:31,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:32:31,896 INFO L93 Difference]: Finished difference Result 1206 states and 1652 transitions. [2020-09-25 13:32:31,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:32:31,899 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 158 [2020-09-25 13:32:31,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:32:31,924 INFO L225 Difference]: With dead ends: 1206 [2020-09-25 13:32:31,924 INFO L226 Difference]: Without dead ends: 628 [2020-09-25 13:32:31,936 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 13:32:31,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2020-09-25 13:32:32,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 615. [2020-09-25 13:32:32,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 615 states. [2020-09-25 13:32:32,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 751 transitions. [2020-09-25 13:32:32,039 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 751 transitions. Word has length 158 [2020-09-25 13:32:32,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:32:32,040 INFO L479 AbstractCegarLoop]: Abstraction has 615 states and 751 transitions. [2020-09-25 13:32:32,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:32:32,040 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 751 transitions. [2020-09-25 13:32:32,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-09-25 13:32:32,056 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:32:32,056 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] [2020-09-25 13:32:32,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:32:32,057 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:32:32,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:32:32,057 INFO L82 PathProgramCache]: Analyzing trace with hash 856620700, now seen corresponding path program 1 times [2020-09-25 13:32:32,057 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:32:32,058 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [281576610] [2020-09-25 13:32:32,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:32:32,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:32,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:32,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:32,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:32,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:37,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:37,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-09-25 13:32:37,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:32:37,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 13:32:37,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:37,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:37,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:32:37,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 13:32:37,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-25 13:32:37,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:37,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:32:37,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:37,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:37,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:37,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:32:37,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:37,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 13:32:37,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:37,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:37,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:32:37,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:37,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 13:32:37,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:37,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:32:37,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:37,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:37,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:37,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:37,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 13:32:37,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:32:37,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-09-25 13:32:37,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:37,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:37,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:32:37,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:37,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 13:32:37,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:37,825 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 13:32:37,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [281576610] [2020-09-25 13:32:37,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:32:37,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 13:32:37,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469391316] [2020-09-25 13:32:37,830 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 13:32:37,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:32:37,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 13:32:37,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-09-25 13:32:37,832 INFO L87 Difference]: Start difference. First operand 615 states and 751 transitions. Second operand 11 states. [2020-09-25 13:32:41,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:32:41,238 INFO L93 Difference]: Finished difference Result 1927 states and 2548 transitions. [2020-09-25 13:32:41,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 13:32:41,238 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 192 [2020-09-25 13:32:41,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:32:41,246 INFO L225 Difference]: With dead ends: 1927 [2020-09-25 13:32:41,246 INFO L226 Difference]: Without dead ends: 887 [2020-09-25 13:32:41,252 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2020-09-25 13:32:41,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2020-09-25 13:32:41,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 722. [2020-09-25 13:32:41,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 722 states. [2020-09-25 13:32:41,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 845 transitions. [2020-09-25 13:32:41,296 INFO L78 Accepts]: Start accepts. Automaton has 722 states and 845 transitions. Word has length 192 [2020-09-25 13:32:41,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:32:41,297 INFO L479 AbstractCegarLoop]: Abstraction has 722 states and 845 transitions. [2020-09-25 13:32:41,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 13:32:41,297 INFO L276 IsEmpty]: Start isEmpty. Operand 722 states and 845 transitions. [2020-09-25 13:32:41,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-25 13:32:41,301 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:32:41,301 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:32:41,302 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:32:41,302 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:32:41,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:32:41,302 INFO L82 PathProgramCache]: Analyzing trace with hash 564185116, now seen corresponding path program 1 times [2020-09-25 13:32:41,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:32:41,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2112100175] [2020-09-25 13:32:41,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:32:41,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:41,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:41,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:41,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:42,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:42,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:44,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:44,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:44,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:46,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:46,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-09-25 13:32:46,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 13:32:46,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 13:32:46,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:46,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:46,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 13:32:46,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 13:32:46,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 13:32:46,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:32:47,002 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 37 [2020-09-25 13:32:47,152 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 37 [2020-09-25 13:32:47,304 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-09-25 13:32:47,434 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 28 [2020-09-25 13:32:47,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:32:47,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:47,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:47,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:47,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:32:47,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:47,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 13:32:47,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:47,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:47,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:32:47,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:47,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 13:32:47,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:47,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:32:47,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:47,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:47,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:47,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:47,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 13:32:47,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:32:47,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-09-25 13:32:47,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:47,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:47,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:32:47,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:47,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 13:32:47,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:48,083 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:32:48,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2112100175] [2020-09-25 13:32:48,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:32:48,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 13:32:48,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797372555] [2020-09-25 13:32:48,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 13:32:48,086 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:32:48,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 13:32:48,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-09-25 13:32:48,087 INFO L87 Difference]: Start difference. First operand 722 states and 845 transitions. Second operand 17 states. [2020-09-25 13:32:51,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:32:51,097 INFO L93 Difference]: Finished difference Result 1359 states and 1617 transitions. [2020-09-25 13:32:51,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 13:32:51,098 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 193 [2020-09-25 13:32:51,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:32:51,102 INFO L225 Difference]: With dead ends: 1359 [2020-09-25 13:32:51,102 INFO L226 Difference]: Without dead ends: 658 [2020-09-25 13:32:51,105 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=133, Invalid=373, Unknown=0, NotChecked=0, Total=506 [2020-09-25 13:32:51,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2020-09-25 13:32:51,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 648. [2020-09-25 13:32:51,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 648 states. [2020-09-25 13:32:51,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 709 transitions. [2020-09-25 13:32:51,130 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 709 transitions. Word has length 193 [2020-09-25 13:32:51,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:32:51,131 INFO L479 AbstractCegarLoop]: Abstraction has 648 states and 709 transitions. [2020-09-25 13:32:51,131 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 13:32:51,131 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 709 transitions. [2020-09-25 13:32:51,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-09-25 13:32:51,135 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:32:51,140 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, 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] [2020-09-25 13:32:51,140 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:32:51,140 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:32:51,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:32:51,141 INFO L82 PathProgramCache]: Analyzing trace with hash -784683625, now seen corresponding path program 1 times [2020-09-25 13:32:51,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:32:51,141 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1758361726] [2020-09-25 13:32:51,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:32:51,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:51,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:51,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:51,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:51,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:56,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:56,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 249 [2020-09-25 13:32:56,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:32:56,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 13:32:56,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:56,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:56,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:32:56,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-09-25 13:32:56,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-09-25 13:32:56,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:32:56,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:32:56,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:56,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:56,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:56,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:32:56,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:56,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 13:32:56,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:56,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:56,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:32:56,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:56,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:32:56,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:56,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:32:56,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:56,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:56,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:56,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 13:32:56,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:56,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 13:32:56,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:56,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:56,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:32:56,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:56,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:32:56,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:32:56,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 13:32:56,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:56,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:56,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:56,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 13:32:56,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:56,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-25 13:32:56,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:56,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:56,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:32:56,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:56,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 13:32:56,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:32:56,849 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 63 proven. 2 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-09-25 13:32:56,849 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1758361726] [2020-09-25 13:32:56,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:32:56,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 13:32:56,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875086545] [2020-09-25 13:32:56,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:32:56,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:32:56,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:32:56,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:32:56,853 INFO L87 Difference]: Start difference. First operand 648 states and 709 transitions. Second operand 8 states. [2020-09-25 13:32:59,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:32:59,217 INFO L93 Difference]: Finished difference Result 1533 states and 1687 transitions. [2020-09-25 13:32:59,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 13:32:59,218 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 236 [2020-09-25 13:32:59,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:32:59,224 INFO L225 Difference]: With dead ends: 1533 [2020-09-25 13:32:59,224 INFO L226 Difference]: Without dead ends: 809 [2020-09-25 13:32:59,227 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-09-25 13:32:59,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 809 states. [2020-09-25 13:32:59,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 809 to 794. [2020-09-25 13:32:59,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 794 states. [2020-09-25 13:32:59,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 864 transitions. [2020-09-25 13:32:59,251 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 864 transitions. Word has length 236 [2020-09-25 13:32:59,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:32:59,251 INFO L479 AbstractCegarLoop]: Abstraction has 794 states and 864 transitions. [2020-09-25 13:32:59,251 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:32:59,252 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 864 transitions. [2020-09-25 13:32:59,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-09-25 13:32:59,256 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:32:59,256 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, 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] [2020-09-25 13:32:59,257 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:32:59,257 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:32:59,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:32:59,257 INFO L82 PathProgramCache]: Analyzing trace with hash 902720122, now seen corresponding path program 1 times [2020-09-25 13:32:59,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:32:59,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1127178510] [2020-09-25 13:32:59,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:32:59,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:59,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:59,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:59,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:59,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:02,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:02,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:03,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:04,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:04,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-09-25 13:33:04,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:33:04,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-09-25 13:33:04,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:04,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:04,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:33:04,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-09-25 13:33:04,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-09-25 13:33:04,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:04,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:04,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:04,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:04,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:04,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:33:04,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:04,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:33:04,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:04,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:04,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:33:04,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:04,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:33:04,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:04,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:33:04,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:04,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:04,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:04,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 13:33:04,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:04,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-25 13:33:04,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:04,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:04,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:33:04,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:04,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 13:33:04,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:04,700 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 72 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:33:04,701 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1127178510] [2020-09-25 13:33:04,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:33:04,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:33:04,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175136747] [2020-09-25 13:33:04,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:33:04,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:04,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:33:04,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:33:04,703 INFO L87 Difference]: Start difference. First operand 794 states and 864 transitions. Second operand 5 states. [2020-09-25 13:33:06,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:33:06,277 INFO L93 Difference]: Finished difference Result 1910 states and 2139 transitions. [2020-09-25 13:33:06,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:33:06,277 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 242 [2020-09-25 13:33:06,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:33:06,278 INFO L225 Difference]: With dead ends: 1910 [2020-09-25 13:33:06,278 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 13:33:06,283 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:33:06,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 13:33:06,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 13:33:06,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 13:33:06,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 13:33:06,284 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 242 [2020-09-25 13:33:06,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:33:06,284 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 13:33:06,284 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:33:06,284 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 13:33:06,284 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 13:33:06,285 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:33:06,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 13:33:06,853 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 88 [2020-09-25 13:33:07,015 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 88 [2020-09-25 13:33:07,485 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 54