/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=WIDESTAMONGSMALL --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_label53.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:37:13,620 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:37:13,624 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:37:13,670 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:37:13,671 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:37:13,681 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:37:13,683 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:37:13,687 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:37:13,690 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:37:13,694 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:37:13,695 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:37:13,696 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:37:13,696 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:37:13,699 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:37:13,702 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:37:13,704 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:37:13,706 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:37:13,707 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:37:13,709 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:37:13,716 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:37:13,719 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:37:13,720 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:37:13,721 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:37:13,722 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:37:13,726 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:37:13,726 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:37:13,726 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:37:13,729 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:37:13,730 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:37:13,732 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:37:13,732 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:37:13,733 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:37:13,734 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:37:13,735 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:37:13,737 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:37:13,737 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:37:13,738 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:37:13,738 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:37:13,738 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:37:13,739 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:37:13,741 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:37:13,742 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 05:37:13,788 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:37:13,788 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:37:13,790 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:37:13,790 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:37:13,790 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:37:13,791 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:37:13,791 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:37:13,791 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:37:13,792 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:37:13,792 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:37:13,793 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:37:13,793 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:37:13,793 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:37:13,794 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:37:13,794 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:37:13,794 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:37:13,794 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:37:13,795 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:37:13,795 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:37:13,795 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:37:13,796 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:37:13,796 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:37:13,796 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:37:13,797 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:37:13,797 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:37:13,797 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:37:13,797 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:37:13,797 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:37:13,798 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:37:13,798 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=WIDESTAMONGSMALL;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=WIDESTAMONGSMALL;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=WIDESTAMONGSMALL;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=WIDESTAMONGSMALL;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=WIDESTAMONGSMALL;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-09-25 05:37:14,249 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:37:14,274 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:37:14,279 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:37:14,280 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:37:14,281 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:37:14,282 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label53.c [2020-09-25 05:37:14,369 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/34c3b87f8/53fe96be171d4c24b20de96a3f3f80ac/FLAGc43fdd1cc [2020-09-25 05:37:14,991 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:37:14,992 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label53.c [2020-09-25 05:37:15,008 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/34c3b87f8/53fe96be171d4c24b20de96a3f3f80ac/FLAGc43fdd1cc [2020-09-25 05:37:15,216 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/34c3b87f8/53fe96be171d4c24b20de96a3f3f80ac [2020-09-25 05:37:15,230 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:37:15,236 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:37:15,237 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:37:15,237 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:37:15,241 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:37:15,243 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:37:15" (1/1) ... [2020-09-25 05:37:15,247 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 05:37:15, skipping insertion in model container [2020-09-25 05:37:15,247 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:37:15" (1/1) ... [2020-09-25 05:37:15,256 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:37:15,317 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:37:15,798 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:37:15,815 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:37:16,074 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:37:16,096 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:37:16,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:16 WrapperNode [2020-09-25 05:37:16,096 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:37:16,097 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:37:16,097 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:37:16,098 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:37:16,119 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:16" (1/1) ... [2020-09-25 05:37:16,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:16" (1/1) ... [2020-09-25 05:37:16,156 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:16" (1/1) ... [2020-09-25 05:37:16,156 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:16" (1/1) ... [2020-09-25 05:37:16,210 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:16" (1/1) ... [2020-09-25 05:37:16,227 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:16" (1/1) ... [2020-09-25 05:37:16,232 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:16" (1/1) ... [2020-09-25 05:37:16,239 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:37:16,239 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:37:16,239 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:37:16,240 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:37:16,241 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:16" (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 05:37:16,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:37:16,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:37:16,337 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 05:37:16,338 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:37:16,338 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 05:37:16,338 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:37:16,338 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:37:16,338 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:37:16,339 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:37:16,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:37:16,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:37:17,554 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:37:17,555 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:37:17,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:37:17 BoogieIcfgContainer [2020-09-25 05:37:17,564 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:37:17,565 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:37:17,565 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:37:17,569 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:37:17,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:37:15" (1/3) ... [2020-09-25 05:37:17,570 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 05:37:17, skipping insertion in model container [2020-09-25 05:37:17,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:16" (2/3) ... [2020-09-25 05:37:17,571 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 05:37:17, skipping insertion in model container [2020-09-25 05:37:17,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:37:17" (3/3) ... [2020-09-25 05:37:17,573 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label53.c [2020-09-25 05:37:17,585 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:37:17,596 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:37:17,618 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:37:17,652 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:37:17,653 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:37:17,653 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:37:17,653 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:37:17,653 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:37:17,653 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:37:17,653 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:37:17,654 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:37:17,686 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 05:37:17,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-09-25 05:37:17,710 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:37:17,712 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:37:17,713 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:37:17,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:37:17,722 INFO L82 PathProgramCache]: Analyzing trace with hash 1669931929, now seen corresponding path program 1 times [2020-09-25 05:37:17,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:37:17,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [100677907] [2020-09-25 05:37:17,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:37:18,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:18,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:18,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:18,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:19,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:19,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:20,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:22,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:23,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:23,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 05:37:23,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:37:23,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 05:37:23,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:23,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:23,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:37:23,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 05:37:23,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-09-25 05:37:23,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 05:37:23,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:37:23,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:23,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:23,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:23,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:37:23,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:23,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 05:37:23,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:23,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:23,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:37:23,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:23,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 05:37:23,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:37:23,483 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 05:37:23,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [100677907] [2020-09-25 05:37:23,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:37:23,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:37:23,488 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524218441] [2020-09-25 05:37:23,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:37:23,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:37:23,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:37:23,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:37:23,516 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 05:37:25,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:37:25,672 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-09-25 05:37:25,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:37:25,675 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 164 [2020-09-25 05:37:25,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:37:25,718 INFO L225 Difference]: With dead ends: 1386 [2020-09-25 05:37:25,718 INFO L226 Difference]: Without dead ends: 787 [2020-09-25 05:37:25,729 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:37:25,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-09-25 05:37:25,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 733. [2020-09-25 05:37:25,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-09-25 05:37:25,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 884 transitions. [2020-09-25 05:37:25,835 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 884 transitions. Word has length 164 [2020-09-25 05:37:25,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:37:25,836 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 884 transitions. [2020-09-25 05:37:25,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:37:25,836 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 884 transitions. [2020-09-25 05:37:25,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-09-25 05:37:25,844 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:37:25,844 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:37:25,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:37:25,845 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:37:25,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:37:25,845 INFO L82 PathProgramCache]: Analyzing trace with hash 591184877, now seen corresponding path program 1 times [2020-09-25 05:37:25,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:37:25,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1715856905] [2020-09-25 05:37:25,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:37:25,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:25,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:26,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:26,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:26,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:27,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:27,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:29,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:29,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:29,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:30,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:30,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:30,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:30,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-09-25 05:37:30,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 05:37:30,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 05:37:30,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:30,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:30,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:37:30,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 05:37:30,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-09-25 05:37:30,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:31,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:37:31,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:31,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:31,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:31,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:37:31,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:31,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 05:37:31,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:31,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:31,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:37:31,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:31,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:37:31,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:31,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:37:31,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:31,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:31,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:31,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 05:37:31,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:31,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 05:37:31,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:31,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:31,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:37:31,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:31,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 05:37:31,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:31,109 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 05:37:31,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1715856905] [2020-09-25 05:37:31,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:37:31,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:37:31,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518819753] [2020-09-25 05:37:31,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:37:31,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:37:31,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:37:31,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:37:31,114 INFO L87 Difference]: Start difference. First operand 733 states and 884 transitions. Second operand 5 states. [2020-09-25 05:37:33,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:37:33,126 INFO L93 Difference]: Finished difference Result 1757 states and 2222 transitions. [2020-09-25 05:37:33,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:37:33,127 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 182 [2020-09-25 05:37:33,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:37:33,140 INFO L225 Difference]: With dead ends: 1757 [2020-09-25 05:37:33,140 INFO L226 Difference]: Without dead ends: 1046 [2020-09-25 05:37:33,143 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 05:37:33,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2020-09-25 05:37:33,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 1036. [2020-09-25 05:37:33,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1036 states. [2020-09-25 05:37:33,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 1283 transitions. [2020-09-25 05:37:33,208 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 1283 transitions. Word has length 182 [2020-09-25 05:37:33,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:37:33,209 INFO L479 AbstractCegarLoop]: Abstraction has 1036 states and 1283 transitions. [2020-09-25 05:37:33,209 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:37:33,209 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 1283 transitions. [2020-09-25 05:37:33,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-09-25 05:37:33,214 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:37:33,215 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:37:33,215 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:37:33,215 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:37:33,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:37:33,216 INFO L82 PathProgramCache]: Analyzing trace with hash 156773588, now seen corresponding path program 1 times [2020-09-25 05:37:33,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:37:33,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1649451877] [2020-09-25 05:37:33,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:37:33,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:33,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:33,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:33,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:34,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:36,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:36,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:36,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:38,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:38,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-09-25 05:37:38,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:37:38,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 05:37:38,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:38,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:38,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:37:38,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-25 05:37:38,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-09-25 05:37:38,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:38,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:37:38,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:38,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:38,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:38,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:37:38,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:38,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 05:37:38,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:38,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:38,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:37:38,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:38,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:37:38,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:38,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:37:38,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:38,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:38,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:38,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 05:37:38,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:38,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 05:37:38,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:38,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:38,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:37:38,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:38,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 05:37:38,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:38,561 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 05:37:38,561 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1649451877] [2020-09-25 05:37:38,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:37:38,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:37:38,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190739189] [2020-09-25 05:37:38,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:37:38,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:37:38,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:37:38,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:37:38,565 INFO L87 Difference]: Start difference. First operand 1036 states and 1283 transitions. Second operand 5 states. [2020-09-25 05:37:40,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:37:40,758 INFO L93 Difference]: Finished difference Result 2668 states and 3421 transitions. [2020-09-25 05:37:40,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:37:40,759 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 198 [2020-09-25 05:37:40,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:37:40,765 INFO L225 Difference]: With dead ends: 2668 [2020-09-25 05:37:40,766 INFO L226 Difference]: Without dead ends: 973 [2020-09-25 05:37:40,773 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 05:37:40,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2020-09-25 05:37:40,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 963. [2020-09-25 05:37:40,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 963 states. [2020-09-25 05:37:40,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1177 transitions. [2020-09-25 05:37:40,825 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1177 transitions. Word has length 198 [2020-09-25 05:37:40,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:37:40,825 INFO L479 AbstractCegarLoop]: Abstraction has 963 states and 1177 transitions. [2020-09-25 05:37:40,826 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:37:40,826 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1177 transitions. [2020-09-25 05:37:40,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-09-25 05:37:40,833 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:37:40,842 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:37:40,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:37:40,845 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:37:40,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:37:40,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1119078680, now seen corresponding path program 1 times [2020-09-25 05:37:40,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:37:40,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [594601188] [2020-09-25 05:37:40,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:37:40,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:40,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:40,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:41,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:42,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:42,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:45,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:45,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-09-25 05:37:45,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:37:45,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 05:37:45,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:45,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:45,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:37:45,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-09-25 05:37:45,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-25 05:37:45,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:37:46,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:37:46,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:46,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:46,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:46,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:37:46,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:46,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:37:46,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:46,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:46,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:37:46,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:46,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:37:46,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:46,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:37:46,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:46,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:46,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:46,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 05:37:46,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:46,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-09-25 05:37:46,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:46,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:46,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:37:46,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:46,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 05:37:46,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:46,387 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:37:46,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [594601188] [2020-09-25 05:37:46,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:37:46,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 05:37:46,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640873536] [2020-09-25 05:37:46,390 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 05:37:46,390 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:37:46,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 05:37:46,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:37:46,391 INFO L87 Difference]: Start difference. First operand 963 states and 1177 transitions. Second operand 8 states. [2020-09-25 05:37:49,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:37:49,581 INFO L93 Difference]: Finished difference Result 3026 states and 3931 transitions. [2020-09-25 05:37:49,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 05:37:49,582 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 202 [2020-09-25 05:37:49,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:37:49,593 INFO L225 Difference]: With dead ends: 3026 [2020-09-25 05:37:49,593 INFO L226 Difference]: Without dead ends: 1976 [2020-09-25 05:37:49,598 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-09-25 05:37:49,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1976 states. [2020-09-25 05:37:49,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1976 to 1924. [2020-09-25 05:37:49,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1924 states. [2020-09-25 05:37:49,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1924 states to 1924 states and 2302 transitions. [2020-09-25 05:37:49,659 INFO L78 Accepts]: Start accepts. Automaton has 1924 states and 2302 transitions. Word has length 202 [2020-09-25 05:37:49,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:37:49,660 INFO L479 AbstractCegarLoop]: Abstraction has 1924 states and 2302 transitions. [2020-09-25 05:37:49,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 05:37:49,660 INFO L276 IsEmpty]: Start isEmpty. Operand 1924 states and 2302 transitions. [2020-09-25 05:37:49,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-09-25 05:37:49,667 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:37:49,668 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:37:49,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:37:49,669 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:37:49,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:37:49,669 INFO L82 PathProgramCache]: Analyzing trace with hash 1463653110, now seen corresponding path program 1 times [2020-09-25 05:37:49,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:37:49,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [171836000] [2020-09-25 05:37:49,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:37:49,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:49,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:49,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:50,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:50,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:50,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:53,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:53,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-09-25 05:37:53,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:37:53,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4243 [2020-09-25 05:37:53,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:53,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:53,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:37:53,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 05:37:53,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 05:37:53,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:37:54,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:37:54,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:54,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:54,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:54,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:37:54,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:54,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 05:37:54,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:54,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:54,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:37:54,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:54,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:37:54,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:54,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:37:54,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:54,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:54,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:54,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 05:37:54,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:54,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:37:54,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:54,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:54,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:37:54,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:54,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 05:37:54,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:37:54,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 05:37:54,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:54,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:54,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:54,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 05:37:54,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:54,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-25 05:37:54,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:54,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:54,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:37:54,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:37:54,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 05:37:54,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:37:54,241 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 54 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:37:54,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [171836000] [2020-09-25 05:37:54,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:37:54,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:37:54,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853374292] [2020-09-25 05:37:54,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:37:54,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:37:54,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:37:54,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:37:54,244 INFO L87 Difference]: Start difference. First operand 1924 states and 2302 transitions. Second operand 7 states. [2020-09-25 05:37:55,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:37:55,484 INFO L93 Difference]: Finished difference Result 3783 states and 4553 transitions. [2020-09-25 05:37:55,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 05:37:55,485 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 226 [2020-09-25 05:37:55,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:37:55,498 INFO L225 Difference]: With dead ends: 3783 [2020-09-25 05:37:55,498 INFO L226 Difference]: Without dead ends: 1881 [2020-09-25 05:37:55,504 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 05:37:55,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1881 states. [2020-09-25 05:37:55,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1881 to 1861. [2020-09-25 05:37:55,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1861 states. [2020-09-25 05:37:55,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1861 states to 1861 states and 2211 transitions. [2020-09-25 05:37:55,561 INFO L78 Accepts]: Start accepts. Automaton has 1861 states and 2211 transitions. Word has length 226 [2020-09-25 05:37:55,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:37:55,561 INFO L479 AbstractCegarLoop]: Abstraction has 1861 states and 2211 transitions. [2020-09-25 05:37:55,562 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:37:55,562 INFO L276 IsEmpty]: Start isEmpty. Operand 1861 states and 2211 transitions. [2020-09-25 05:37:55,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-09-25 05:37:55,569 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:37:55,570 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:37:55,570 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:37:55,570 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:37:55,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:37:55,571 INFO L82 PathProgramCache]: Analyzing trace with hash -387844278, now seen corresponding path program 1 times [2020-09-25 05:37:55,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:37:55,571 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1399172216] [2020-09-25 05:37:55,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:37:55,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:55,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:55,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:55,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:55,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:00,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:00,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-09-25 05:38:00,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 05:38:00,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 05:38:00,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:00,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:00,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:38:00,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 05:38:00,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 05:38:00,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:00,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:38:00,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:00,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:00,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:00,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:38:00,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:00,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 05:38:00,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:00,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:00,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:38:00,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:00,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:38:00,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:38:00,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:38:00,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:00,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:00,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:00,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 05:38:00,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:00,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:38:00,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:00,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:00,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:38:00,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:00,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 05:38:00,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:00,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 05:38:00,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:00,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:00,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:00,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 05:38:00,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:00,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-25 05:38:00,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:00,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:00,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:38:00,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:38:00,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 05:38:00,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:00,880 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 57 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:38:00,880 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1399172216] [2020-09-25 05:38:00,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:38:00,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:38:00,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114575294] [2020-09-25 05:38:00,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:38:00,883 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:38:00,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:38:00,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:38:00,883 INFO L87 Difference]: Start difference. First operand 1861 states and 2211 transitions. Second operand 7 states. [2020-09-25 05:38:03,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:38:03,462 INFO L93 Difference]: Finished difference Result 5066 states and 6481 transitions. [2020-09-25 05:38:03,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 05:38:03,467 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 227 [2020-09-25 05:38:03,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:38:03,489 INFO L225 Difference]: With dead ends: 5066 [2020-09-25 05:38:03,489 INFO L226 Difference]: Without dead ends: 3227 [2020-09-25 05:38:03,497 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 05:38:03,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3227 states. [2020-09-25 05:38:03,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3227 to 2973. [2020-09-25 05:38:03,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2973 states. [2020-09-25 05:38:03,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2973 states to 2973 states and 3612 transitions. [2020-09-25 05:38:03,594 INFO L78 Accepts]: Start accepts. Automaton has 2973 states and 3612 transitions. Word has length 227 [2020-09-25 05:38:03,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:38:03,594 INFO L479 AbstractCegarLoop]: Abstraction has 2973 states and 3612 transitions. [2020-09-25 05:38:03,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:38:03,594 INFO L276 IsEmpty]: Start isEmpty. Operand 2973 states and 3612 transitions. [2020-09-25 05:38:03,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-09-25 05:38:03,605 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:38:03,606 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:38:03,606 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 05:38:03,606 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:38:03,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:38:03,607 INFO L82 PathProgramCache]: Analyzing trace with hash -1351256274, now seen corresponding path program 1 times [2020-09-25 05:38:03,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:38:03,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1228879051] [2020-09-25 05:38:03,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:38:03,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:03,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:03,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:03,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:04,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:05,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking...