/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/Problem01_label00.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:32:51,985 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:32:51,989 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:32:52,014 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:32:52,015 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:32:52,016 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:32:52,017 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:32:52,019 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:32:52,021 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:32:52,022 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:32:52,023 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:32:52,024 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:32:52,024 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:32:52,025 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:32:52,026 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:32:52,028 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:32:52,029 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:32:52,030 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:32:52,032 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:32:52,033 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:32:52,035 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:32:52,036 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:32:52,037 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:32:52,038 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:32:52,041 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:32:52,041 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:32:52,041 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:32:52,042 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:32:52,043 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:32:52,044 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:32:52,044 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:32:52,045 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:32:52,046 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:32:52,047 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:32:52,048 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:32:52,048 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:32:52,049 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:32:52,049 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:32:52,049 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:32:52,050 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:32:52,051 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:32:52,052 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 05:32:52,087 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:32:52,087 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:32:52,089 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:32:52,089 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:32:52,089 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:32:52,089 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:32:52,089 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:32:52,090 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:32:52,090 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:32:52,090 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:32:52,090 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:32:52,090 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:32:52,090 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:32:52,094 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:32:52,094 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:32:52,094 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:32:52,094 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:32:52,095 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:32:52,095 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:32:52,095 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:32:52,095 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:32:52,095 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:32:52,096 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:32:52,096 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:32:52,096 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:32:52,096 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:32:52,096 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:32:52,097 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:32:52,097 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:32:52,097 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 05:32:52,574 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:32:52,591 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:32:52,595 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:32:52,596 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:32:52,597 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:32:52,598 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label00.c [2020-09-25 05:32:52,681 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c1e2add3d/b364a266e20e4a9c91c786877e892e54/FLAGc88f98be8 [2020-09-25 05:32:53,311 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:32:53,312 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label00.c [2020-09-25 05:32:53,326 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c1e2add3d/b364a266e20e4a9c91c786877e892e54/FLAGc88f98be8 [2020-09-25 05:32:53,546 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c1e2add3d/b364a266e20e4a9c91c786877e892e54 [2020-09-25 05:32:53,558 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:32:53,564 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:32:53,565 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:32:53,565 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:32:53,569 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:32:53,571 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:32:53" (1/1) ... [2020-09-25 05:32:53,575 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ee2931e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:53, skipping insertion in model container [2020-09-25 05:32:53,575 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:32:53" (1/1) ... [2020-09-25 05:32:53,584 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:32:53,644 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:32:54,242 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:32:54,258 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:32:54,358 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:32:54,380 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:32:54,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:54 WrapperNode [2020-09-25 05:32:54,382 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:32:54,383 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:32:54,384 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:32:54,384 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:32:54,397 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:54" (1/1) ... [2020-09-25 05:32:54,399 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:54" (1/1) ... [2020-09-25 05:32:54,417 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:54" (1/1) ... [2020-09-25 05:32:54,418 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:54" (1/1) ... [2020-09-25 05:32:54,463 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:54" (1/1) ... [2020-09-25 05:32:54,478 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:54" (1/1) ... [2020-09-25 05:32:54,486 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:54" (1/1) ... [2020-09-25 05:32:54,494 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:32:54,495 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:32:54,495 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:32:54,495 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:32:54,497 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:54" (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 05:32:54,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:32:54,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:32:54,593 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 05:32:54,593 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:32:54,594 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 05:32:54,594 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:32:54,594 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:32:54,595 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:32:54,595 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:32:54,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:32:54,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:32:55,967 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:32:55,967 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:32:55,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:32:55 BoogieIcfgContainer [2020-09-25 05:32:55,976 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:32:55,978 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:32:55,978 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:32:55,983 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:32:55,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:32:53" (1/3) ... [2020-09-25 05:32:55,985 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e4c6f27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:32:55, skipping insertion in model container [2020-09-25 05:32:55,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:54" (2/3) ... [2020-09-25 05:32:55,986 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e4c6f27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:32:55, skipping insertion in model container [2020-09-25 05:32:55,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:32:55" (3/3) ... [2020-09-25 05:32:55,989 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label00.c [2020-09-25 05:32:56,003 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:32:56,018 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:32:56,043 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:32:56,091 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:32:56,092 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:32:56,093 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:32:56,093 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:32:56,093 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:32:56,093 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:32:56,094 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:32:56,094 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:32:56,133 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 05:32:56,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-09-25 05:32:56,169 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:32:56,170 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] [2020-09-25 05:32:56,171 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:32:56,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:32:56,179 INFO L82 PathProgramCache]: Analyzing trace with hash 1944492271, now seen corresponding path program 1 times [2020-09-25 05:32:56,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:32:56,190 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2053754436] [2020-09-25 05:32:56,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:32:56,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:56,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:56,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:57,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:58,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:00,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:01,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:01,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 05:33:01,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:33:01,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 05:33:01,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:01,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:01,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:33:01,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 05:33:01,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-25 05:33:01,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 05:33:01,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:33:01,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:01,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:01,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:01,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:33:01,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:01,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 05:33:01,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:01,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:01,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:33:01,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:01,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 05:33:01,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:01,811 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 05:33:01,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2053754436] [2020-09-25 05:33:01,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:33:01,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:33:01,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340493388] [2020-09-25 05:33:01,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:33:01,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:33:01,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:33:01,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:33:01,843 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 05:33:03,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:33:03,934 INFO L93 Difference]: Finished difference Result 1340 states and 1738 transitions. [2020-09-25 05:33:03,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:33:03,936 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 136 [2020-09-25 05:33:03,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:33:03,976 INFO L225 Difference]: With dead ends: 1340 [2020-09-25 05:33:03,976 INFO L226 Difference]: Without dead ends: 741 [2020-09-25 05:33:03,989 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 05:33:04,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2020-09-25 05:33:04,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 664. [2020-09-25 05:33:04,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2020-09-25 05:33:04,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 780 transitions. [2020-09-25 05:33:04,161 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 780 transitions. Word has length 136 [2020-09-25 05:33:04,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:33:04,165 INFO L479 AbstractCegarLoop]: Abstraction has 664 states and 780 transitions. [2020-09-25 05:33:04,166 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:33:04,185 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 780 transitions. [2020-09-25 05:33:04,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-09-25 05:33:04,194 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:33:04,194 INFO L422 BasicCegarLoop]: trace histogram [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 05:33:04,195 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:33:04,195 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:33:04,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:33:04,195 INFO L82 PathProgramCache]: Analyzing trace with hash 1586815040, now seen corresponding path program 1 times [2020-09-25 05:33:04,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:33:04,198 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1536059319] [2020-09-25 05:33:04,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:33:04,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:04,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:04,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:04,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:04,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:05,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:05,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:07,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:07,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:09,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:09,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-09-25 05:33:09,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 05:33:09,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 05:33:09,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:09,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:09,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:33:09,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 05:33:09,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-25 05:33:09,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:09,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:33:09,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:09,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:09,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:09,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:33:09,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:09,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:33:09,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:09,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:09,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:33:09,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:09,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:33:09,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:09,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:33:09,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:09,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:09,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:09,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 05:33:09,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:09,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 05:33:09,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:09,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:09,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:33:09,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:09,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:33:09,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:09,558 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:33:09,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1536059319] [2020-09-25 05:33:09,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:33:09,559 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 05:33:09,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763640189] [2020-09-25 05:33:09,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:33:09,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:33:09,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:33:09,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:33:09,563 INFO L87 Difference]: Start difference. First operand 664 states and 780 transitions. Second operand 6 states. [2020-09-25 05:33:12,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:33:12,303 INFO L93 Difference]: Finished difference Result 2016 states and 2519 transitions. [2020-09-25 05:33:12,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 05:33:12,304 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 157 [2020-09-25 05:33:12,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:33:12,312 INFO L225 Difference]: With dead ends: 2016 [2020-09-25 05:33:12,312 INFO L226 Difference]: Without dead ends: 1376 [2020-09-25 05:33:12,315 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:33:12,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2020-09-25 05:33:12,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 1236. [2020-09-25 05:33:12,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1236 states. [2020-09-25 05:33:12,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 1519 transitions. [2020-09-25 05:33:12,363 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 1519 transitions. Word has length 157 [2020-09-25 05:33:12,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:33:12,364 INFO L479 AbstractCegarLoop]: Abstraction has 1236 states and 1519 transitions. [2020-09-25 05:33:12,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:33:12,364 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 1519 transitions. [2020-09-25 05:33:12,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-09-25 05:33:12,370 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:33:12,371 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 05:33:12,371 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:33:12,371 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:33:12,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:33:12,372 INFO L82 PathProgramCache]: Analyzing trace with hash -980240193, now seen corresponding path program 1 times [2020-09-25 05:33:12,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:33:12,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [151566060] [2020-09-25 05:33:12,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:33:12,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:12,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:12,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:12,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:12,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:12,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:12,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:13,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:13,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:15,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:15,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:15,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:16,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:17,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:17,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-09-25 05:33:17,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 05:33:17,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 05:33:17,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:17,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:17,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:33:17,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-25 05:33:17,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-09-25 05:33:17,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:17,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:33:17,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:17,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:17,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:17,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:33:17,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:17,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 05:33:17,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:17,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:17,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:33:17,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:17,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:33:17,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:33:17,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:33:17,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:17,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:17,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:17,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 05:33:17,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:17,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 05:33:17,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:17,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:17,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:33:17,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:17,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 05:33:17,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:17,708 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:33:17,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [151566060] [2020-09-25 05:33:17,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:33:17,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:33:17,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832620438] [2020-09-25 05:33:17,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:33:17,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:33:17,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:33:17,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:33:17,713 INFO L87 Difference]: Start difference. First operand 1236 states and 1519 transitions. Second operand 5 states. [2020-09-25 05:33:19,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:33:19,993 INFO L93 Difference]: Finished difference Result 2961 states and 3720 transitions. [2020-09-25 05:33:19,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:33:19,993 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 164 [2020-09-25 05:33:19,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:33:20,014 INFO L225 Difference]: With dead ends: 2961 [2020-09-25 05:33:20,014 INFO L226 Difference]: Without dead ends: 1749 [2020-09-25 05:33:20,019 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 05:33:20,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1749 states. [2020-09-25 05:33:20,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1749 to 1544. [2020-09-25 05:33:20,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1544 states. [2020-09-25 05:33:20,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1544 states to 1544 states and 1886 transitions. [2020-09-25 05:33:20,069 INFO L78 Accepts]: Start accepts. Automaton has 1544 states and 1886 transitions. Word has length 164 [2020-09-25 05:33:20,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:33:20,070 INFO L479 AbstractCegarLoop]: Abstraction has 1544 states and 1886 transitions. [2020-09-25 05:33:20,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:33:20,070 INFO L276 IsEmpty]: Start isEmpty. Operand 1544 states and 1886 transitions. [2020-09-25 05:33:20,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-09-25 05:33:20,077 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:33:20,078 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 05:33:20,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:33:20,078 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:33:20,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:33:20,079 INFO L82 PathProgramCache]: Analyzing trace with hash -579666185, now seen corresponding path program 1 times [2020-09-25 05:33:20,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:33:20,079 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2042927302] [2020-09-25 05:33:20,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:33:20,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:20,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:20,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:20,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:20,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:20,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:20,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:21,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:24,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:25,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:25,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-09-25 05:33:25,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 05:33:25,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 05:33:25,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:25,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:25,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:33:25,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 05:33:25,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 05:33:25,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:25,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:33:25,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:25,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:25,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:25,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:33:25,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:25,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 05:33:25,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:25,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:25,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:33:25,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:25,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:33:25,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:25,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:33:25,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:25,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:25,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:25,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 05:33:25,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:25,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 05:33:25,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:25,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:25,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:33:25,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:25,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 05:33:25,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:25,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 05:33:25,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:25,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:25,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:25,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 05:33:25,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:25,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 05:33:25,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:25,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:25,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:33:25,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:33:25,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 05:33:25,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:25,459 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 41 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:33:25,461 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2042927302] [2020-09-25 05:33:25,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:33:25,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:33:25,462 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350557861] [2020-09-25 05:33:25,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:33:25,463 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:33:25,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:33:25,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:33:25,465 INFO L87 Difference]: Start difference. First operand 1544 states and 1886 transitions. Second operand 7 states. [2020-09-25 05:33:27,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:33:27,664 INFO L93 Difference]: Finished difference Result 4195 states and 5288 transitions. [2020-09-25 05:33:27,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 05:33:27,664 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 182 [2020-09-25 05:33:27,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:33:27,683 INFO L225 Difference]: With dead ends: 4195 [2020-09-25 05:33:27,683 INFO L226 Difference]: Without dead ends: 2675 [2020-09-25 05:33:27,690 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 05:33:27,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2675 states. [2020-09-25 05:33:27,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2675 to 2420. [2020-09-25 05:33:27,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2420 states. [2020-09-25 05:33:27,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2420 states to 2420 states and 3024 transitions. [2020-09-25 05:33:27,785 INFO L78 Accepts]: Start accepts. Automaton has 2420 states and 3024 transitions. Word has length 182 [2020-09-25 05:33:27,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:33:27,786 INFO L479 AbstractCegarLoop]: Abstraction has 2420 states and 3024 transitions. [2020-09-25 05:33:27,786 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:33:27,786 INFO L276 IsEmpty]: Start isEmpty. Operand 2420 states and 3024 transitions. [2020-09-25 05:33:27,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-09-25 05:33:27,795 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:33:27,796 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:33:27,796 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:33:27,796 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:33:27,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:33:27,797 INFO L82 PathProgramCache]: Analyzing trace with hash -211066278, now seen corresponding path program 1 times [2020-09-25 05:33:27,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:33:27,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1480992432] [2020-09-25 05:33:27,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:33:27,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:27,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:27,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:28,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:28,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:28,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:28,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:28,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:29,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:32,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:32,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:32,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-25 05:33:32,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 05:33:32,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 05:33:32,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:32,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:32,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:33:32,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-09-25 05:33:32,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-25 05:33:32,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:33:32,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:33:32,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:32,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:32,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:32,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:33:32,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:32,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:33:32,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:32,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:32,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:33:32,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:32,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:33:32,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:33,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:33:33,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:33,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:33,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:33,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 05:33:33,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:33,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 05:33:33,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:33,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:33,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:33:33,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:33,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 05:33:33,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:33:33,124 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 34 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:33:33,125 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1480992432] [2020-09-25 05:33:33,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:33:33,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:33:33,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90181491] [2020-09-25 05:33:33,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:33:33,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:33:33,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:33:33,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:33:33,127 INFO L87 Difference]: Start difference. First operand 2420 states and 3024 transitions. Second operand 5 states. [2020-09-25 05:33:34,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:33:34,760 INFO L93 Difference]: Finished difference Result 5068 states and 6329 transitions. [2020-09-25 05:33:34,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:33:34,761 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 183 [2020-09-25 05:33:34,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:33:34,773 INFO L225 Difference]: With dead ends: 5068 [2020-09-25 05:33:34,774 INFO L226 Difference]: Without dead ends: 2672 [2020-09-25 05:33:34,782 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 05:33:34,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2672 states. [2020-09-25 05:33:34,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2672 to 2136. [2020-09-25 05:33:34,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2136 states. [2020-09-25 05:33:34,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2136 states to 2136 states and 2571 transitions. [2020-09-25 05:33:34,846 INFO L78 Accepts]: Start accepts. Automaton has 2136 states and 2571 transitions. Word has length 183 [2020-09-25 05:33:34,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:33:34,847 INFO L479 AbstractCegarLoop]: Abstraction has 2136 states and 2571 transitions. [2020-09-25 05:33:34,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:33:34,847 INFO L276 IsEmpty]: Start isEmpty. Operand 2136 states and 2571 transitions. [2020-09-25 05:33:34,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-09-25 05:33:34,856 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:33:34,857 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:33:34,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:33:34,857 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:33:34,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:33:34,858 INFO L82 PathProgramCache]: Analyzing trace with hash -777703907, now seen corresponding path program 1 times [2020-09-25 05:33:34,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:33:34,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1248202379] [2020-09-25 05:33:34,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:33:34,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:34,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:34,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:35,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:36,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:36,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:37,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:37,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:37,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:37,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:37,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:39,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:39,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-09-25 05:33:39,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 05:33:39,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 05:33:39,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:39,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:39,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:33:39,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-09-25 05:33:39,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 05:33:39,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:33:39,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:33:39,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:39,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:39,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:39,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:33:39,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:39,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 05:33:39,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:39,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:39,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:33:39,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:39,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:33:39,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:33:40,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:33:40,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:40,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:40,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:40,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 05:33:40,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:40,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 05:33:40,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:40,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:40,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:33:40,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:40,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 05:33:40,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:33:40,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-09-25 05:33:40,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:40,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:40,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:40,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 05:33:40,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:40,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 05:33:40,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:40,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:40,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:33:40,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:33:40,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 05:33:40,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:33:40,171 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 71 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:33:40,171 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1248202379] [2020-09-25 05:33:40,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:33:40,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:33:40,172 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417795792] [2020-09-25 05:33:40,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:33:40,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:33:40,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:33:40,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:33:40,173 INFO L87 Difference]: Start difference. First operand 2136 states and 2571 transitions. Second operand 7 states. [2020-09-25 05:33:42,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:33:42,509 INFO L93 Difference]: Finished difference Result 4812 states and 5859 transitions. [2020-09-25 05:33:42,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 05:33:42,510 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 208 [2020-09-25 05:33:42,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:33:42,523 INFO L225 Difference]: With dead ends: 4812 [2020-09-25 05:33:42,523 INFO L226 Difference]: Without dead ends: 2700 [2020-09-25 05:33:42,531 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 05:33:42,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2700 states. [2020-09-25 05:33:42,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2700 to 2150. [2020-09-25 05:33:42,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2150 states. [2020-09-25 05:33:42,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 2557 transitions. [2020-09-25 05:33:42,591 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 2557 transitions. Word has length 208 [2020-09-25 05:33:42,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:33:42,591 INFO L479 AbstractCegarLoop]: Abstraction has 2150 states and 2557 transitions. [2020-09-25 05:33:42,591 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:33:42,592 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 2557 transitions. [2020-09-25 05:33:42,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-09-25 05:33:42,600 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:33:42,601 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:33:42,601 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 05:33:42,601 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:33:42,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:33:42,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1081600264, now seen corresponding path program 1 times [2020-09-25 05:33:42,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:33:42,602 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [836623899] [2020-09-25 05:33:42,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:33:42,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:42,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:42,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:42,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking...