/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_label50.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:32:50,680 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:32:50,684 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:32:50,728 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:32:50,728 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:32:50,735 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:32:50,737 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:32:50,741 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:32:50,743 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:32:50,746 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:32:50,747 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:32:50,748 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:32:50,749 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:32:50,751 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:32:50,754 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:32:50,755 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:32:50,757 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:32:50,758 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:32:50,760 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:32:50,768 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:32:50,770 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:32:50,771 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:32:50,772 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:32:50,773 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:32:50,784 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:32:50,785 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:32:50,785 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:32:50,792 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:32:50,793 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:32:50,797 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:32:50,797 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:32:50,798 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:32:50,799 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:32:50,800 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:32:50,801 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:32:50,801 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:32:50,802 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:32:50,802 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:32:50,802 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:32:50,803 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:32:50,805 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:32:50,806 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 13:32:50,831 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:32:50,831 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:32:50,833 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:32:50,833 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:32:50,833 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:32:50,833 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:32:50,834 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:32:50,834 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:32:50,834 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:32:50,834 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:32:50,834 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:32:50,835 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:32:50,835 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:32:50,835 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:32:50,835 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:32:50,835 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:32:50,836 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:32:50,836 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:32:50,836 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:32:50,836 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:32:50,836 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:32:50,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:32:50,837 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:32:50,837 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:32:50,837 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:32:50,837 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:32:50,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:32:50,838 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:32:50,838 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:32:50,838 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 13:32:51,307 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:32:51,330 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:32:51,337 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:32:51,339 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:32:51,339 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:32:51,340 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label50.c [2020-09-25 13:32:51,417 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/958fd8063/f89f295ff5d24d66ba7d1e446fc95ddb/FLAG4d003ac7e [2020-09-25 13:32:52,012 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:32:52,013 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label50.c [2020-09-25 13:32:52,028 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/958fd8063/f89f295ff5d24d66ba7d1e446fc95ddb/FLAG4d003ac7e [2020-09-25 13:32:52,251 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/958fd8063/f89f295ff5d24d66ba7d1e446fc95ddb [2020-09-25 13:32:52,265 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:32:52,271 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:32:52,272 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:32:52,273 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:32:52,278 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:32:52,279 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:32:52" (1/1) ... [2020-09-25 13:32:52,284 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d72532b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:52, skipping insertion in model container [2020-09-25 13:32:52,284 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:32:52" (1/1) ... [2020-09-25 13:32:52,294 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:32:52,349 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:32:52,819 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:32:52,829 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:32:53,107 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:32:53,129 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:32:53,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:53 WrapperNode [2020-09-25 13:32:53,131 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:32:53,132 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:32:53,132 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:32:53,133 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:32:53,153 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:53" (1/1) ... [2020-09-25 13:32:53,156 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:53" (1/1) ... [2020-09-25 13:32:53,201 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:53" (1/1) ... [2020-09-25 13:32:53,201 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:53" (1/1) ... [2020-09-25 13:32:53,249 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:53" (1/1) ... [2020-09-25 13:32:53,265 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:53" (1/1) ... [2020-09-25 13:32:53,271 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:53" (1/1) ... [2020-09-25 13:32:53,280 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:32:53,280 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:32:53,281 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:32:53,281 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:32:53,282 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:53" (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 13:32:53,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:32:53,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:32:53,366 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:32:53,366 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:32:53,366 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:32:53,367 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:32:53,367 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:32:53,367 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:32:53,367 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:32:53,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:32:53,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:32:54,688 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:32:54,688 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:32:54,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:32:54 BoogieIcfgContainer [2020-09-25 13:32:54,698 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:32:54,699 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:32:54,700 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:32:54,704 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:32:54,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:32:52" (1/3) ... [2020-09-25 13:32:54,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@590b40ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:32:54, skipping insertion in model container [2020-09-25 13:32:54,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:53" (2/3) ... [2020-09-25 13:32:54,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@590b40ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:32:54, skipping insertion in model container [2020-09-25 13:32:54,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:32:54" (3/3) ... [2020-09-25 13:32:54,709 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label50.c [2020-09-25 13:32:54,724 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:32:54,736 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:32:54,762 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:32:54,807 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:32:54,807 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:32:54,807 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:32:54,808 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:32:54,808 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:32:54,808 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:32:54,808 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:32:54,808 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:32:54,845 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 13:32:54,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-09-25 13:32:54,864 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:32:54,866 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] [2020-09-25 13:32:54,866 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:32:54,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:32:54,876 INFO L82 PathProgramCache]: Analyzing trace with hash -593885342, now seen corresponding path program 1 times [2020-09-25 13:32:54,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:32:54,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [100677907] [2020-09-25 13:32:54,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:32:55,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:55,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:55,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:55,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:57,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:59,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:59,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-09-25 13:32:59,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:32:59,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3949 [2020-09-25 13:32:59,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:59,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:59,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:32:59,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 13:32:59,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 13:32:59,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 13:32:59,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:32:59,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:59,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:59,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:59,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:32:59,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:59,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 13:32:59,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:59,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:59,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:32:59,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:59,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 13:32:59,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:59,464 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 13:32:59,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [100677907] [2020-09-25 13:32:59,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:32:59,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 13:32:59,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358653993] [2020-09-25 13:32:59,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:32:59,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:32:59,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:32:59,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:32:59,496 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 5 states. [2020-09-25 13:33:02,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:33:02,420 INFO L93 Difference]: Finished difference Result 1539 states and 2132 transitions. [2020-09-25 13:33:02,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 13:33:02,422 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2020-09-25 13:33:02,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:33:02,455 INFO L225 Difference]: With dead ends: 1539 [2020-09-25 13:33:02,455 INFO L226 Difference]: Without dead ends: 935 [2020-09-25 13:33:02,464 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:33:02,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 935 states. [2020-09-25 13:33:02,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 935 to 878. [2020-09-25 13:33:02,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 878 states. [2020-09-25 13:33:02,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1089 transitions. [2020-09-25 13:33:02,584 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1089 transitions. Word has length 107 [2020-09-25 13:33:02,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:33:02,585 INFO L479 AbstractCegarLoop]: Abstraction has 878 states and 1089 transitions. [2020-09-25 13:33:02,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:33:02,586 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1089 transitions. [2020-09-25 13:33:02,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-09-25 13:33:02,594 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:02,594 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] [2020-09-25 13:33:02,595 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:33:02,595 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:02,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:02,595 INFO L82 PathProgramCache]: Analyzing trace with hash 1658093710, now seen corresponding path program 1 times [2020-09-25 13:33:02,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:02,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [262525804] [2020-09-25 13:33:02,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:02,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:02,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:02,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:02,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:02,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:03,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:05,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:05,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-09-25 13:33:05,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:33:05,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3005 [2020-09-25 13:33:05,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:05,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:05,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:33:05,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 13:33:05,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 13:33:05,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:33:05,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:05,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:05,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:05,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:05,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:33:05,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:05,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 13:33:05,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:05,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:05,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:33:05,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:05,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:33:05,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:05,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:33:05,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:05,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:05,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:05,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 13:33:05,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:05,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 13:33:05,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:05,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:05,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:33:05,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:05,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 13:33:05,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:05,872 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 13:33:05,873 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [262525804] [2020-09-25 13:33:05,873 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:33:05,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:33:05,874 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639397148] [2020-09-25 13:33:05,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:33:05,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:05,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:33:05,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:33:05,877 INFO L87 Difference]: Start difference. First operand 878 states and 1089 transitions. Second operand 5 states. [2020-09-25 13:33:07,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:33:07,696 INFO L93 Difference]: Finished difference Result 2199 states and 2857 transitions. [2020-09-25 13:33:07,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:33:07,697 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2020-09-25 13:33:07,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:33:07,706 INFO L225 Difference]: With dead ends: 2199 [2020-09-25 13:33:07,706 INFO L226 Difference]: Without dead ends: 1343 [2020-09-25 13:33:07,711 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 13:33:07,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1343 states. [2020-09-25 13:33:07,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1343 to 1330. [2020-09-25 13:33:07,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1330 states. [2020-09-25 13:33:07,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1330 states to 1330 states and 1680 transitions. [2020-09-25 13:33:07,774 INFO L78 Accepts]: Start accepts. Automaton has 1330 states and 1680 transitions. Word has length 125 [2020-09-25 13:33:07,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:33:07,775 INFO L479 AbstractCegarLoop]: Abstraction has 1330 states and 1680 transitions. [2020-09-25 13:33:07,775 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:33:07,775 INFO L276 IsEmpty]: Start isEmpty. Operand 1330 states and 1680 transitions. [2020-09-25 13:33:07,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-09-25 13:33:07,780 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:07,781 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] [2020-09-25 13:33:07,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:33:07,781 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:07,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:07,782 INFO L82 PathProgramCache]: Analyzing trace with hash -125182521, now seen corresponding path program 1 times [2020-09-25 13:33:07,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:07,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1475115526] [2020-09-25 13:33:07,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:07,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:07,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:08,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:08,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:08,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:09,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:09,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-09-25 13:33:09,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:33:09,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2158 [2020-09-25 13:33:09,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:09,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:09,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:33:09,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-25 13:33:09,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-09-25 13:33:09,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:33:10,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:10,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:10,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:10,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:10,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:33:10,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:10,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 13:33:10,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:10,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:10,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:33:10,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:10,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:33:10,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:10,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:33:10,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:10,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:10,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:10,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 13:33:10,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:10,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 13:33:10,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:10,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:10,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:33:10,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:10,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 13:33:10,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:10,209 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 13:33:10,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1475115526] [2020-09-25 13:33:10,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:33:10,210 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:33:10,210 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103115236] [2020-09-25 13:33:10,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:33:10,212 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:10,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:33:10,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:33:10,213 INFO L87 Difference]: Start difference. First operand 1330 states and 1680 transitions. Second operand 5 states. [2020-09-25 13:33:11,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:33:11,835 INFO L93 Difference]: Finished difference Result 3587 states and 4700 transitions. [2020-09-25 13:33:11,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:33:11,836 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2020-09-25 13:33:11,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:33:11,849 INFO L225 Difference]: With dead ends: 3587 [2020-09-25 13:33:11,850 INFO L226 Difference]: Without dead ends: 1730 [2020-09-25 13:33:11,859 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:33:11,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1730 states. [2020-09-25 13:33:11,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1730 to 1699. [2020-09-25 13:33:11,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1699 states. [2020-09-25 13:33:11,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1699 states to 1699 states and 2012 transitions. [2020-09-25 13:33:11,933 INFO L78 Accepts]: Start accepts. Automaton has 1699 states and 2012 transitions. Word has length 141 [2020-09-25 13:33:11,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:33:11,935 INFO L479 AbstractCegarLoop]: Abstraction has 1699 states and 2012 transitions. [2020-09-25 13:33:11,941 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:33:11,941 INFO L276 IsEmpty]: Start isEmpty. Operand 1699 states and 2012 transitions. [2020-09-25 13:33:11,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-09-25 13:33:11,950 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:11,950 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:33:11,951 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:33:11,951 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:11,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:11,952 INFO L82 PathProgramCache]: Analyzing trace with hash 1712229635, now seen corresponding path program 1 times [2020-09-25 13:33:11,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:11,953 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [990067037] [2020-09-25 13:33:11,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:11,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:11,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:12,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:12,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-25 13:33:12,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:12,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 394 [2020-09-25 13:33:12,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:12,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:12,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:33:12,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 13:33:12,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 13:33:12,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:12,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:12,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:12,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:12,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:12,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:33:12,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:12,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 13:33:12,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:12,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:12,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:33:12,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:12,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 13:33:12,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:12,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:33:12,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:12,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:12,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:12,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 13:33:12,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:12,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-09-25 13:33:12,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:12,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:12,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:33:12,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:33:12,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 13:33:12,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:12,778 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:33:12,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [990067037] [2020-09-25 13:33:12,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:33:12,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 13:33:12,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214926866] [2020-09-25 13:33:12,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:33:12,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:12,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:33:12,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:33:12,781 INFO L87 Difference]: Start difference. First operand 1699 states and 2012 transitions. Second operand 7 states. [2020-09-25 13:33:14,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:33:14,869 INFO L93 Difference]: Finished difference Result 4375 states and 5355 transitions. [2020-09-25 13:33:14,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 13:33:14,870 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 145 [2020-09-25 13:33:14,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:33:14,887 INFO L225 Difference]: With dead ends: 4375 [2020-09-25 13:33:14,887 INFO L226 Difference]: Without dead ends: 2698 [2020-09-25 13:33:14,895 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 13:33:14,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2698 states. [2020-09-25 13:33:14,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2698 to 2499. [2020-09-25 13:33:14,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2499 states. [2020-09-25 13:33:15,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2499 states to 2499 states and 2906 transitions. [2020-09-25 13:33:15,009 INFO L78 Accepts]: Start accepts. Automaton has 2499 states and 2906 transitions. Word has length 145 [2020-09-25 13:33:15,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:33:15,010 INFO L479 AbstractCegarLoop]: Abstraction has 2499 states and 2906 transitions. [2020-09-25 13:33:15,010 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:33:15,010 INFO L276 IsEmpty]: Start isEmpty. Operand 2499 states and 2906 transitions. [2020-09-25 13:33:15,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-25 13:33:15,017 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:15,017 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:33:15,017 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:33:15,017 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:15,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:15,018 INFO L82 PathProgramCache]: Analyzing trace with hash -451289247, now seen corresponding path program 1 times [2020-09-25 13:33:15,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:15,018 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1797549231] [2020-09-25 13:33:15,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:15,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:15,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:15,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:15,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:15,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-09-25 13:33:15,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:33:15,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 798 [2020-09-25 13:33:15,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:15,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:15,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:33:15,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 13:33:15,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-09-25 13:33:15,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:15,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:15,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:15,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:15,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:15,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:33:15,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:15,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 13:33:15,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:15,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:15,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:33:15,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:15,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:33:15,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:16,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:33:16,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:16,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:16,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:16,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:33:16,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:16,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 13:33:16,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:16,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:16,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:33:16,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:16,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 13:33:16,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:16,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 13:33:16,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:16,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:16,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:16,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:16,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 13:33:16,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:33:16,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-09-25 13:33:16,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:16,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:16,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:33:16,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:33:16,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 13:33:16,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:16,244 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 47 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 13:33:16,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1797549231] [2020-09-25 13:33:16,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:33:16,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 13:33:16,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474184437] [2020-09-25 13:33:16,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 13:33:16,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:16,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 13:33:16,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:33:16,247 INFO L87 Difference]: Start difference. First operand 2499 states and 2906 transitions. Second operand 6 states. [2020-09-25 13:33:18,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:33:18,085 INFO L93 Difference]: Finished difference Result 6199 states and 7285 transitions. [2020-09-25 13:33:18,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 13:33:18,086 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 167 [2020-09-25 13:33:18,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:33:18,102 INFO L225 Difference]: With dead ends: 6199 [2020-09-25 13:33:18,102 INFO L226 Difference]: Without dead ends: 3386 [2020-09-25 13:33:18,111 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:33:18,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3386 states. [2020-09-25 13:33:18,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3386 to 3247. [2020-09-25 13:33:18,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3247 states. [2020-09-25 13:33:18,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3247 states to 3247 states and 3706 transitions. [2020-09-25 13:33:18,192 INFO L78 Accepts]: Start accepts. Automaton has 3247 states and 3706 transitions. Word has length 167 [2020-09-25 13:33:18,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:33:18,193 INFO L479 AbstractCegarLoop]: Abstraction has 3247 states and 3706 transitions. [2020-09-25 13:33:18,193 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 13:33:18,193 INFO L276 IsEmpty]: Start isEmpty. Operand 3247 states and 3706 transitions. [2020-09-25 13:33:18,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-09-25 13:33:18,202 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:18,203 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-09-25 13:33:18,203 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:33:18,203 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:18,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:18,204 INFO L82 PathProgramCache]: Analyzing trace with hash 76072862, now seen corresponding path program 1 times [2020-09-25 13:33:18,204 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:18,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [995241939] [2020-09-25 13:33:18,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:18,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:18,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:18,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:18,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:18,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:18,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:23,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:23,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:23,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-09-25 13:33:23,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:33:23,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 13:33:23,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:23,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:23,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:33:23,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 13:33:23,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-25 13:33:23,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:23,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:23,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:23,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:23,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:23,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:33:23,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:23,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 13:33:23,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:23,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:23,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:33:23,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:23,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:33:23,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:23,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:33:23,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:23,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:23,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:23,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:33:23,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:23,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 13:33:23,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:23,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:23,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:33:23,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:23,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:33:23,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:33:23,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 13:33:23,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:23,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:23,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:23,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:23,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 13:33:23,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:33:23,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 13:33:23,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:23,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:23,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:33:23,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:33:23,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 13:33:23,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:23,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-25 13:33:23,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:23,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:23,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:23,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 13:33:23,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:23,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-25 13:33:23,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:23,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:23,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:33:23,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:33:23,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 13:33:23,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:23,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-09-25 13:33:23,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:23,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:23,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:23,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 13:33:23,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:23,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 13:33:23,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:23,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:23,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:33:23,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 13:33:23,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:33:23,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:23,635 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 109 proven. 20 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-25 13:33:23,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [995241939] [2020-09-25 13:33:23,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:33:23,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 13:33:23,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211767439] [2020-09-25 13:33:23,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:33:23,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:23,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:33:23,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:33:23,640 INFO L87 Difference]: Start difference. First operand 3247 states and 3706 transitions. Second operand 7 states. [2020-09-25 13:33:25,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:33:25,586 INFO L93 Difference]: Finished difference Result 7067 states and 8278 transitions. [2020-09-25 13:33:25,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 13:33:25,591 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 206 [2020-09-25 13:33:25,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:33:25,608 INFO L225 Difference]: With dead ends: 7067 [2020-09-25 13:33:25,609 INFO L226 Difference]: Without dead ends: 3672 [2020-09-25 13:33:25,617 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:33:25,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3672 states. [2020-09-25 13:33:25,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3672 to 2906. [2020-09-25 13:33:25,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2906 states. [2020-09-25 13:33:25,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2906 states to 2906 states and 3248 transitions. [2020-09-25 13:33:25,706 INFO L78 Accepts]: Start accepts. Automaton has 2906 states and 3248 transitions. Word has length 206 [2020-09-25 13:33:25,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:33:25,706 INFO L479 AbstractCegarLoop]: Abstraction has 2906 states and 3248 transitions. [2020-09-25 13:33:25,706 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:33:25,707 INFO L276 IsEmpty]: Start isEmpty. Operand 2906 states and 3248 transitions. [2020-09-25 13:33:25,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-09-25 13:33:25,713 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:25,713 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, 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] [2020-09-25 13:33:25,714 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 13:33:25,714 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:25,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:25,714 INFO L82 PathProgramCache]: Analyzing trace with hash 1219149427, now seen corresponding path program 1 times [2020-09-25 13:33:25,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:25,715 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [184773833] [2020-09-25 13:33:25,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:25,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:25,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:26,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:26,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-09-25 13:33:26,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:26,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 361 [2020-09-25 13:33:26,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:26,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:26,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:33:26,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-09-25 13:33:26,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 13:33:26,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:26,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:26,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:26,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:26,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:26,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:33:26,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:26,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:33:26,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:26,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:26,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:33:26,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:26,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:33:26,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:26,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:33:26,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:26,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:26,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:26,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 13:33:26,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:26,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-25 13:33:26,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:26,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:26,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:33:26,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:26,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 13:33:26,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:26,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-25 13:33:26,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:26,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:26,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:26,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 13:33:26,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:26,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-25 13:33:26,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:26,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:26,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:33:26,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:33:26,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 13:33:26,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:26,464 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 112 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 13:33:26,464 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [184773833] [2020-09-25 13:33:26,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:33:26,465 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 13:33:26,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303899878] [2020-09-25 13:33:26,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:33:26,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:26,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:33:26,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:33:26,469 INFO L87 Difference]: Start difference. First operand 2906 states and 3248 transitions. Second operand 7 states. [2020-09-25 13:33:28,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:33:28,268 INFO L93 Difference]: Finished difference Result 6738 states and 7683 transitions. [2020-09-25 13:33:28,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 13:33:28,269 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 204 [2020-09-25 13:33:28,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:33:28,284 INFO L225 Difference]: With dead ends: 6738 [2020-09-25 13:33:28,284 INFO L226 Difference]: Without dead ends: 3854 [2020-09-25 13:33:28,292 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 13:33:28,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3854 states. [2020-09-25 13:33:28,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3854 to 3824. [2020-09-25 13:33:28,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3824 states. [2020-09-25 13:33:28,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3824 states to 3824 states and 4232 transitions. [2020-09-25 13:33:28,384 INFO L78 Accepts]: Start accepts. Automaton has 3824 states and 4232 transitions. Word has length 204 [2020-09-25 13:33:28,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:33:28,385 INFO L479 AbstractCegarLoop]: Abstraction has 3824 states and 4232 transitions. [2020-09-25 13:33:28,385 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:33:28,385 INFO L276 IsEmpty]: Start isEmpty. Operand 3824 states and 4232 transitions. [2020-09-25 13:33:28,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-09-25 13:33:28,395 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:28,395 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:33:28,395 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 13:33:28,396 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:28,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:28,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1357916067, now seen corresponding path program 1 times [2020-09-25 13:33:28,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:28,397 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1202242542] [2020-09-25 13:33:28,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:28,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:28,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:28,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:28,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:29,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:32,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:32,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-09-25 13:33:32,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:33:32,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3990 [2020-09-25 13:33:32,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:32,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:32,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:33:32,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 13:33:32,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 13:33:32,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:32,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:32,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:32,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:32,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:32,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:33:32,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:32,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 13:33:32,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:32,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:32,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:33:32,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:32,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:33:32,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:33:32,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:33:32,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:32,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:32,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:32,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:33:32,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:32,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 13:33:32,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:32,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:32,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:33:32,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:32,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:33:32,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:32,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 13:33:32,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:32,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:32,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:32,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 13:33:32,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:32,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-09-25 13:33:32,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:32,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:32,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:33:32,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:33:32,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-25 13:33:32,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:33:32,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-25 13:33:32,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:32,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:32,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:32,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 13:33:32,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:32,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 13:33:32,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:32,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:32,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:33:32,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 13:33:32,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:33:32,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:32,940 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 131 proven. 16 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-09-25 13:33:32,941 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1202242542] [2020-09-25 13:33:32,941 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:33:32,941 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 13:33:32,941 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900980351] [2020-09-25 13:33:32,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:33:32,942 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:32,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:33:32,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:33:32,943 INFO L87 Difference]: Start difference. First operand 3824 states and 4232 transitions. Second operand 8 states. [2020-09-25 13:33:35,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:33:35,413 INFO L93 Difference]: Finished difference Result 8122 states and 9062 transitions. [2020-09-25 13:33:35,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 13:33:35,414 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 240 [2020-09-25 13:33:35,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:33:35,431 INFO L225 Difference]: With dead ends: 8122 [2020-09-25 13:33:35,431 INFO L226 Difference]: Without dead ends: 4320 [2020-09-25 13:33:35,440 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-25 13:33:35,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4320 states. [2020-09-25 13:33:35,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4320 to 4296. [2020-09-25 13:33:35,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4296 states. [2020-09-25 13:33:35,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4296 states to 4296 states and 4692 transitions. [2020-09-25 13:33:35,528 INFO L78 Accepts]: Start accepts. Automaton has 4296 states and 4692 transitions. Word has length 240 [2020-09-25 13:33:35,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:33:35,528 INFO L479 AbstractCegarLoop]: Abstraction has 4296 states and 4692 transitions. [2020-09-25 13:33:35,529 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:33:35,529 INFO L276 IsEmpty]: Start isEmpty. Operand 4296 states and 4692 transitions. [2020-09-25 13:33:35,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-09-25 13:33:35,538 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:35,539 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:33:35,539 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 13:33:35,539 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:35,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:35,540 INFO L82 PathProgramCache]: Analyzing trace with hash -1217921601, now seen corresponding path program 1 times [2020-09-25 13:33:35,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:35,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1225491597] [2020-09-25 13:33:35,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:35,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:35,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:35,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:35,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:36,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:37,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking...