/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label40.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:40:03,670 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:40:03,674 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:40:03,706 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:40:03,706 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:40:03,708 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:40:03,709 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:40:03,711 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:40:03,713 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:40:03,714 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:40:03,716 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:40:03,717 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:40:03,718 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:40:03,719 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:40:03,720 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:40:03,721 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:40:03,723 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:40:03,724 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:40:03,726 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:40:03,728 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:40:03,730 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:40:03,732 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:40:03,733 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:40:03,734 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:40:03,737 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:40:03,737 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:40:03,737 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:40:03,739 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:40:03,739 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:40:03,740 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:40:03,741 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:40:03,742 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:40:03,742 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:40:03,743 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:40:03,745 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:40:03,745 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:40:03,746 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:40:03,746 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:40:03,746 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:40:03,747 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:40:03,748 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:40:03,749 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 14:40:03,798 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:40:03,798 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:40:03,801 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:40:03,801 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:40:03,801 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:40:03,801 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:40:03,802 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:40:03,802 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:40:03,802 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:40:03,802 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:40:03,804 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:40:03,804 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:40:03,804 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:40:03,805 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:40:03,805 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:40:03,805 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:40:03,805 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:40:03,806 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:40:03,806 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:40:03,806 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:40:03,806 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:40:03,807 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:40:03,807 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:40:03,807 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:40:03,807 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:40:03,807 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:40:03,808 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:40:03,808 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:40:03,808 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:40:03,808 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-09-25 14:40:04,283 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:40:04,307 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:40:04,313 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:40:04,315 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:40:04,316 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:40:04,317 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label40.c [2020-09-25 14:40:04,405 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8cb2db897/f451b43ff17b4315b039c420e5f841ab/FLAG2ba3394cf [2020-09-25 14:40:05,055 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:40:05,056 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label40.c [2020-09-25 14:40:05,081 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8cb2db897/f451b43ff17b4315b039c420e5f841ab/FLAG2ba3394cf [2020-09-25 14:40:05,263 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8cb2db897/f451b43ff17b4315b039c420e5f841ab [2020-09-25 14:40:05,278 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:40:05,285 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:40:05,286 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:40:05,286 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:40:05,291 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:40:05,292 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:40:05" (1/1) ... [2020-09-25 14:40:05,296 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@194bd3d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:05, skipping insertion in model container [2020-09-25 14:40:05,296 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:40:05" (1/1) ... [2020-09-25 14:40:05,305 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:40:05,383 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:40:05,930 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:40:05,937 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:40:06,187 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:40:06,211 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:40:06,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:06 WrapperNode [2020-09-25 14:40:06,214 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:40:06,215 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:40:06,215 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:40:06,215 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:40:06,235 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:06" (1/1) ... [2020-09-25 14:40:06,238 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:06" (1/1) ... [2020-09-25 14:40:06,285 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:06" (1/1) ... [2020-09-25 14:40:06,285 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:06" (1/1) ... [2020-09-25 14:40:06,334 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:06" (1/1) ... [2020-09-25 14:40:06,352 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:06" (1/1) ... [2020-09-25 14:40:06,358 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:06" (1/1) ... [2020-09-25 14:40:06,373 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:40:06,373 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:40:06,374 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:40:06,374 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:40:06,375 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:06" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:40:06,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:40:06,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:40:06,471 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 14:40:06,471 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:40:06,471 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 14:40:06,472 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:40:06,472 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:40:06,473 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:40:06,473 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:40:06,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:40:06,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:40:07,822 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:40:07,822 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:40:07,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:40:07 BoogieIcfgContainer [2020-09-25 14:40:07,832 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:40:07,833 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:40:07,834 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:40:07,837 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:40:07,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:40:05" (1/3) ... [2020-09-25 14:40:07,839 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a66a94e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:40:07, skipping insertion in model container [2020-09-25 14:40:07,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:06" (2/3) ... [2020-09-25 14:40:07,840 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a66a94e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:40:07, skipping insertion in model container [2020-09-25 14:40:07,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:40:07" (3/3) ... [2020-09-25 14:40:07,842 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label40.c [2020-09-25 14:40:07,854 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:40:07,866 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:40:07,895 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:40:07,946 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:40:07,947 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:40:07,947 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:40:07,947 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:40:07,947 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:40:07,947 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:40:07,948 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:40:07,948 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:40:07,985 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 14:40:08,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-09-25 14:40:08,009 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:40:08,012 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] [2020-09-25 14:40:08,013 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:40:08,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:40:08,021 INFO L82 PathProgramCache]: Analyzing trace with hash 632775426, now seen corresponding path program 1 times [2020-09-25 14:40:08,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:40:08,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [840094341] [2020-09-25 14:40:08,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:40:08,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:08,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:08,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:09,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:11,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:11,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:13,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:13,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-09-25 14:40:13,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 14:40:13,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 14:40:13,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:13,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:13,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:40:13,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 14:40:13,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-25 14:40:13,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 14:40:13,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:40:13,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:13,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:13,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:13,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:40:13,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:13,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 14:40:13,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:13,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:13,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:40:13,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:13,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 14:40:13,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:40:13,644 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 14:40:13,646 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [840094341] [2020-09-25 14:40:13,648 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:40:13,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:40:13,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437127269] [2020-09-25 14:40:13,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:40:13,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:40:13,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:40:13,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:40:13,691 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 14:40:16,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:40:16,221 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-09-25 14:40:16,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:40:16,223 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 115 [2020-09-25 14:40:16,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:40:16,250 INFO L225 Difference]: With dead ends: 1386 [2020-09-25 14:40:16,250 INFO L226 Difference]: Without dead ends: 787 [2020-09-25 14:40:16,262 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 14:40:16,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-09-25 14:40:16,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 733. [2020-09-25 14:40:16,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-09-25 14:40:16,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 884 transitions. [2020-09-25 14:40:16,383 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 884 transitions. Word has length 115 [2020-09-25 14:40:16,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:40:16,384 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 884 transitions. [2020-09-25 14:40:16,384 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:40:16,384 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 884 transitions. [2020-09-25 14:40:16,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-09-25 14:40:16,395 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:40:16,396 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 14:40:16,396 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:40:16,397 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:40:16,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:40:16,397 INFO L82 PathProgramCache]: Analyzing trace with hash -1507069906, now seen corresponding path program 1 times [2020-09-25 14:40:16,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:40:16,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1567614676] [2020-09-25 14:40:16,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:40:16,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:16,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:16,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:16,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:17,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:18,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:18,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:19,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:21,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:21,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-09-25 14:40:21,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:40:21,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 14:40:21,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:21,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:21,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:40:21,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 14:40:21,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-09-25 14:40:21,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:21,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:40:21,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:21,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:21,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:21,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:40:21,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:21,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 14:40:21,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:21,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:21,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:40:21,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:21,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:40:21,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:21,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:40:21,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:21,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:21,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:21,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 14:40:21,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:21,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 14:40:21,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:21,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:21,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:40:21,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:21,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:40:21,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:21,628 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:40:21,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1567614676] [2020-09-25 14:40:21,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:40:21,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:40:21,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766553680] [2020-09-25 14:40:21,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:40:21,632 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:40:21,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:40:21,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:40:21,632 INFO L87 Difference]: Start difference. First operand 733 states and 884 transitions. Second operand 5 states. [2020-09-25 14:40:24,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:40:24,045 INFO L93 Difference]: Finished difference Result 1900 states and 2381 transitions. [2020-09-25 14:40:24,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:40:24,047 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2020-09-25 14:40:24,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:40:24,055 INFO L225 Difference]: With dead ends: 1900 [2020-09-25 14:40:24,055 INFO L226 Difference]: Without dead ends: 1189 [2020-09-25 14:40:24,059 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 14:40:24,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1189 states. [2020-09-25 14:40:24,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1189 to 1055. [2020-09-25 14:40:24,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1055 states. [2020-09-25 14:40:24,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 1308 transitions. [2020-09-25 14:40:24,103 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 1308 transitions. Word has length 133 [2020-09-25 14:40:24,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:40:24,104 INFO L479 AbstractCegarLoop]: Abstraction has 1055 states and 1308 transitions. [2020-09-25 14:40:24,104 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:40:24,104 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 1308 transitions. [2020-09-25 14:40:24,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-09-25 14:40:24,116 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:40:24,117 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 14:40:24,117 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:40:24,117 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:40:24,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:40:24,118 INFO L82 PathProgramCache]: Analyzing trace with hash -2051843805, now seen corresponding path program 1 times [2020-09-25 14:40:24,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:40:24,118 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [88199374] [2020-09-25 14:40:24,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:40:24,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:24,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:24,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:24,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:25,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:28,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:28,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-09-25 14:40:28,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:40:28,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4451 [2020-09-25 14:40:28,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:28,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:28,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:40:28,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 14:40:28,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-25 14:40:28,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:28,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:40:28,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:28,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:28,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:28,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:40:28,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:28,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 14:40:28,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:28,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:28,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:40:28,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:28,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:40:28,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:28,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:40:28,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:28,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:28,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:28,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 14:40:28,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:28,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 14:40:28,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:28,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:28,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:40:28,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:28,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:40:28,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:28,970 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:40:28,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [88199374] [2020-09-25 14:40:28,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:40:28,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:40:28,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498192122] [2020-09-25 14:40:28,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:40:28,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:40:28,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:40:28,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:40:28,976 INFO L87 Difference]: Start difference. First operand 1055 states and 1308 transitions. Second operand 5 states. [2020-09-25 14:40:31,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:40:31,301 INFO L93 Difference]: Finished difference Result 2737 states and 3595 transitions. [2020-09-25 14:40:31,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:40:31,302 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-09-25 14:40:31,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:40:31,312 INFO L225 Difference]: With dead ends: 2737 [2020-09-25 14:40:31,312 INFO L226 Difference]: Without dead ends: 1704 [2020-09-25 14:40:31,316 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:40:31,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1704 states. [2020-09-25 14:40:31,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1704 to 1664. [2020-09-25 14:40:31,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1664 states. [2020-09-25 14:40:31,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1664 states to 1664 states and 2048 transitions. [2020-09-25 14:40:31,404 INFO L78 Accepts]: Start accepts. Automaton has 1664 states and 2048 transitions. Word has length 139 [2020-09-25 14:40:31,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:40:31,407 INFO L479 AbstractCegarLoop]: Abstraction has 1664 states and 2048 transitions. [2020-09-25 14:40:31,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:40:31,407 INFO L276 IsEmpty]: Start isEmpty. Operand 1664 states and 2048 transitions. [2020-09-25 14:40:31,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-25 14:40:31,417 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:40:31,417 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 14:40:31,417 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:40:31,417 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:40:31,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:40:31,418 INFO L82 PathProgramCache]: Analyzing trace with hash 79526696, now seen corresponding path program 1 times [2020-09-25 14:40:31,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:40:31,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1344467930] [2020-09-25 14:40:31,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:40:31,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:31,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:31,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:31,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:32,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:36,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:36,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-09-25 14:40:36,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:40:36,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 14:40:36,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:36,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:36,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 14:40:36,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-09-25 14:40:36,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 14:40:36,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:37,056 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 38 [2020-09-25 14:40:37,180 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 34 [2020-09-25 14:40:37,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:40:37,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:37,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:37,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:37,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:40:37,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:37,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 14:40:37,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:37,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:37,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:40:37,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:37,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:40:37,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:37,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:40:37,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:37,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:37,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:37,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 14:40:37,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:37,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:40:37,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:37,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:37,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:40:37,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:37,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:40:37,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:37,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 14:40:37,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:37,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:37,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:37,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-25 14:40:37,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:37,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 14:40:37,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:37,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:37,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:40:37,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:37,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:40:37,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:37,733 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 14:40:37,733 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1344467930] [2020-09-25 14:40:37,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:40:37,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 14:40:37,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657721527] [2020-09-25 14:40:37,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 14:40:37,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:40:37,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 14:40:37,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:40:37,736 INFO L87 Difference]: Start difference. First operand 1664 states and 2048 transitions. Second operand 12 states. [2020-09-25 14:40:38,467 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-09-25 14:40:38,723 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-09-25 14:40:41,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:40:41,326 INFO L93 Difference]: Finished difference Result 3726 states and 4776 transitions. [2020-09-25 14:40:41,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-25 14:40:41,333 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 153 [2020-09-25 14:40:41,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:40:41,345 INFO L225 Difference]: With dead ends: 3726 [2020-09-25 14:40:41,346 INFO L226 Difference]: Without dead ends: 1672 [2020-09-25 14:40:41,354 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=230, Invalid=526, Unknown=0, NotChecked=0, Total=756 [2020-09-25 14:40:41,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1672 states. [2020-09-25 14:40:41,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1672 to 1632. [2020-09-25 14:40:41,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1632 states. [2020-09-25 14:40:41,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1632 states to 1632 states and 1996 transitions. [2020-09-25 14:40:41,432 INFO L78 Accepts]: Start accepts. Automaton has 1632 states and 1996 transitions. Word has length 153 [2020-09-25 14:40:41,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:40:41,432 INFO L479 AbstractCegarLoop]: Abstraction has 1632 states and 1996 transitions. [2020-09-25 14:40:41,433 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 14:40:41,433 INFO L276 IsEmpty]: Start isEmpty. Operand 1632 states and 1996 transitions. [2020-09-25 14:40:41,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-09-25 14:40:41,441 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:40:41,442 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 14:40:41,442 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:40:41,442 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:40:41,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:40:41,443 INFO L82 PathProgramCache]: Analyzing trace with hash -240738087, now seen corresponding path program 1 times [2020-09-25 14:40:41,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:40:41,444 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1637718138] [2020-09-25 14:40:41,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:40:41,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:41,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:41,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:41,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:46,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:46,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-09-25 14:40:46,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:40:46,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 14:40:46,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:46,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:46,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 14:40:46,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-09-25 14:40:46,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 14:40:46,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:47,042 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 40 [2020-09-25 14:40:47,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:40:47,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:47,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:47,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:47,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:40:47,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:47,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 14:40:47,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:47,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:47,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:40:47,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:47,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:40:47,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:40:47,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:40:47,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:47,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:47,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:47,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 14:40:47,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:47,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:40:47,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:47,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:47,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:40:47,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:47,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:40:47,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:47,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 14:40:47,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:47,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:47,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:47,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 14:40:47,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:47,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 14:40:47,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:47,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:47,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:40:47,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:47,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 14:40:47,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:40:47,757 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 14:40:47,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1637718138] [2020-09-25 14:40:47,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:40:47,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 14:40:47,758 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361025980] [2020-09-25 14:40:47,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 14:40:47,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:40:47,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 14:40:47,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-25 14:40:47,759 INFO L87 Difference]: Start difference. First operand 1632 states and 1996 transitions. Second operand 13 states. [2020-09-25 14:40:48,428 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-09-25 14:40:48,840 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 97 [2020-09-25 14:40:49,980 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 94 [2020-09-25 14:40:50,350 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 91 [2020-09-25 14:40:50,967 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 86 [2020-09-25 14:40:52,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:40:52,005 INFO L93 Difference]: Finished difference Result 4181 states and 5473 transitions. [2020-09-25 14:40:52,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 14:40:52,006 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 158 [2020-09-25 14:40:52,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:40:52,019 INFO L225 Difference]: With dead ends: 4181 [2020-09-25 14:40:52,019 INFO L226 Difference]: Without dead ends: 2253 [2020-09-25 14:40:52,028 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=132, Invalid=248, Unknown=0, NotChecked=0, Total=380 [2020-09-25 14:40:52,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2253 states. [2020-09-25 14:40:52,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2253 to 2195. [2020-09-25 14:40:52,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2195 states. [2020-09-25 14:40:52,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2195 states to 2195 states and 2628 transitions. [2020-09-25 14:40:52,088 INFO L78 Accepts]: Start accepts. Automaton has 2195 states and 2628 transitions. Word has length 158 [2020-09-25 14:40:52,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:40:52,089 INFO L479 AbstractCegarLoop]: Abstraction has 2195 states and 2628 transitions. [2020-09-25 14:40:52,089 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 14:40:52,089 INFO L276 IsEmpty]: Start isEmpty. Operand 2195 states and 2628 transitions. [2020-09-25 14:40:52,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-25 14:40:52,097 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:40:52,097 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:40:52,097 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:40:52,097 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:40:52,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:40:52,098 INFO L82 PathProgramCache]: Analyzing trace with hash 1265978914, now seen corresponding path program 1 times [2020-09-25 14:40:52,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:40:52,098 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1458172253] [2020-09-25 14:40:52,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:40:52,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:52,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:52,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:52,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:52,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking...