/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_label26.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:33:32,965 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:33:32,972 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:33:33,013 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:33:33,014 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:33:33,022 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:33:33,024 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:33:33,028 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:33:33,031 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:33:33,035 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:33:33,036 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:33:33,037 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:33:33,037 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:33:33,040 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:33:33,043 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:33:33,045 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:33:33,047 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:33:33,048 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:33:33,050 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:33:33,058 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:33:33,061 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:33:33,062 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:33:33,063 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:33:33,064 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:33:33,076 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:33:33,076 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:33:33,076 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:33:33,084 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:33:33,084 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:33:33,088 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:33:33,089 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:33:33,090 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:33:33,090 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:33:33,091 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:33:33,094 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:33:33,094 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:33:33,095 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:33:33,095 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:33:33,095 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:33:33,097 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:33:33,098 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:33:33,099 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 05:33:33,125 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:33:33,125 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:33:33,127 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:33:33,127 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:33:33,127 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:33:33,127 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:33:33,128 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:33:33,128 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:33:33,128 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:33:33,128 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:33:33,128 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:33:33,129 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:33:33,129 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:33:33,129 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:33:33,129 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:33:33,129 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:33:33,130 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:33:33,130 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:33:33,130 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:33:33,130 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:33:33,130 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:33:33,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:33:33,131 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:33:33,131 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:33:33,131 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:33:33,131 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:33:33,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:33:33,132 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:33:33,132 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:33:33,132 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 05:33:33,584 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:33:33,602 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:33:33,609 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:33:33,611 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:33:33,612 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:33:33,613 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label26.c [2020-09-25 05:33:33,708 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f01267da8/4d58e57c886c4bf7b2aa74ea103d138a/FLAGfd780e738 [2020-09-25 05:33:34,378 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:33:34,379 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label26.c [2020-09-25 05:33:34,396 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f01267da8/4d58e57c886c4bf7b2aa74ea103d138a/FLAGfd780e738 [2020-09-25 05:33:34,600 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f01267da8/4d58e57c886c4bf7b2aa74ea103d138a [2020-09-25 05:33:34,616 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:33:34,623 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:33:34,629 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:33:34,630 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:33:34,634 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:33:34,635 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:33:34" (1/1) ... [2020-09-25 05:33:34,641 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17e5ec8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:34, skipping insertion in model container [2020-09-25 05:33:34,642 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:33:34" (1/1) ... [2020-09-25 05:33:34,652 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:33:34,704 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:33:35,198 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:33:35,205 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:33:35,473 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:33:35,504 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:33:35,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:35 WrapperNode [2020-09-25 05:33:35,506 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:33:35,507 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:33:35,507 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:33:35,508 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:33:35,531 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:35" (1/1) ... [2020-09-25 05:33:35,534 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:35" (1/1) ... [2020-09-25 05:33:35,580 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:35" (1/1) ... [2020-09-25 05:33:35,581 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:35" (1/1) ... [2020-09-25 05:33:35,640 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:35" (1/1) ... [2020-09-25 05:33:35,653 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:35" (1/1) ... [2020-09-25 05:33:35,657 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:35" (1/1) ... [2020-09-25 05:33:35,665 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:33:35,665 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:33:35,665 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:33:35,665 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:33:35,667 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:35" (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 05:33:35,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:33:35,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:33:35,751 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 05:33:35,751 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:33:35,751 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 05:33:35,751 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:33:35,752 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:33:35,752 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:33:35,752 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:33:35,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:33:35,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:33:37,116 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:33:37,116 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:33:37,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:33:37 BoogieIcfgContainer [2020-09-25 05:33:37,126 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:33:37,127 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:33:37,128 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:33:37,132 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:33:37,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:33:34" (1/3) ... [2020-09-25 05:33:37,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@223224ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:33:37, skipping insertion in model container [2020-09-25 05:33:37,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:35" (2/3) ... [2020-09-25 05:33:37,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@223224ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:33:37, skipping insertion in model container [2020-09-25 05:33:37,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:33:37" (3/3) ... [2020-09-25 05:33:37,137 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label26.c [2020-09-25 05:33:37,152 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:33:37,164 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:33:37,192 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:33:37,231 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:33:37,232 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:33:37,232 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:33:37,232 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:33:37,232 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:33:37,232 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:33:37,232 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:33:37,233 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:33:37,269 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 05:33:37,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-09-25 05:33:37,292 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:33:37,294 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] [2020-09-25 05:33:37,294 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:33:37,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:33:37,305 INFO L82 PathProgramCache]: Analyzing trace with hash -1760559547, now seen corresponding path program 1 times [2020-09-25 05:33:37,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:33:37,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [68871380] [2020-09-25 05:33:37,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:33:37,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:37,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:38,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:38,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:38,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:39,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:39,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:41,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:42,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:42,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-25 05:33:42,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:33:42,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 05:33:42,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:42,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:42,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:33:42,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 05:33:42,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-09-25 05:33:42,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 05:33:42,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:33:42,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:42,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:42,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:42,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:33:42,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:42,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 05:33:42,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:42,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:42,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:33:42,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:42,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 05:33:42,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:43,008 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 05:33:43,009 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [68871380] [2020-09-25 05:33:43,011 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:33:43,011 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:33:43,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982187968] [2020-09-25 05:33:43,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:33:43,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:33:43,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:33:43,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:33:43,042 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 05:33:45,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:33:45,191 INFO L93 Difference]: Finished difference Result 1268 states and 1667 transitions. [2020-09-25 05:33:45,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:33:45,193 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2020-09-25 05:33:45,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:33:45,236 INFO L225 Difference]: With dead ends: 1268 [2020-09-25 05:33:45,236 INFO L226 Difference]: Without dead ends: 694 [2020-09-25 05:33:45,250 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 05:33:45,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2020-09-25 05:33:45,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 603. [2020-09-25 05:33:45,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 05:33:45,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-25 05:33:45,351 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 131 [2020-09-25 05:33:45,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:33:45,352 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-25 05:33:45,352 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:33:45,352 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-25 05:33:45,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-25 05:33:45,363 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:33:45,364 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 05:33:45,364 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:33:45,364 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:33:45,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:33:45,365 INFO L82 PathProgramCache]: Analyzing trace with hash 926344477, now seen corresponding path program 1 times [2020-09-25 05:33:45,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:33:45,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [164303907] [2020-09-25 05:33:45,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:33:45,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:45,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:45,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:45,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:46,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:50,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:50,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-09-25 05:33:50,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 05:33:50,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 05:33:50,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:50,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:50,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:33:50,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 05:33:50,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 05:33:50,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:50,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:33:50,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:50,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:50,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:50,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:33:50,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:50,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 05:33:50,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:50,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:50,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:33:50,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:50,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 05:33:50,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:50,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:33:50,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:50,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:50,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:50,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 05:33:50,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:50,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 05:33:50,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:50,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:50,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:33:50,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:33:50,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 05:33:50,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:50,689 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:33:50,689 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [164303907] [2020-09-25 05:33:50,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:33:50,690 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 05:33:50,690 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368725052] [2020-09-25 05:33:50,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:33:50,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:33:50,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:33:50,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:33:50,694 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 7 states. [2020-09-25 05:33:53,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:33:53,142 INFO L93 Difference]: Finished difference Result 1538 states and 1910 transitions. [2020-09-25 05:33:53,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 05:33:53,144 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 152 [2020-09-25 05:33:53,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:33:53,153 INFO L225 Difference]: With dead ends: 1538 [2020-09-25 05:33:53,153 INFO L226 Difference]: Without dead ends: 959 [2020-09-25 05:33:53,158 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 2 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 05:33:53,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2020-09-25 05:33:53,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 901. [2020-09-25 05:33:53,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 901 states. [2020-09-25 05:33:53,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1109 transitions. [2020-09-25 05:33:53,218 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1109 transitions. Word has length 152 [2020-09-25 05:33:53,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:33:53,218 INFO L479 AbstractCegarLoop]: Abstraction has 901 states and 1109 transitions. [2020-09-25 05:33:53,218 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:33:53,218 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1109 transitions. [2020-09-25 05:33:53,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-25 05:33:53,223 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:33:53,224 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 05:33:53,224 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:33:53,224 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:33:53,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:33:53,225 INFO L82 PathProgramCache]: Analyzing trace with hash 1561438327, now seen corresponding path program 1 times [2020-09-25 05:33:53,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:33:53,225 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [799830422] [2020-09-25 05:33:53,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:33:53,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:53,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:53,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:53,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:53,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:56,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:56,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:56,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:58,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:58,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-09-25 05:33:58,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:33:58,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 05:33:58,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:58,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:58,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:33:58,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 05:33:58,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 05:33:58,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:58,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:33:58,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:58,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:58,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:58,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:33:58,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:58,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 05:33:58,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:58,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:58,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:33:58,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:58,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 05:33:58,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:58,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:33:58,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:58,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:58,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:58,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:33:58,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:58,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 05:33:58,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:58,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:58,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:33:58,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:33:58,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 05:33:58,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:58,484 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:33:58,485 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [799830422] [2020-09-25 05:33:58,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:33:58,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 05:33:58,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142570478] [2020-09-25 05:33:58,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:33:58,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:33:58,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:33:58,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:33:58,487 INFO L87 Difference]: Start difference. First operand 901 states and 1109 transitions. Second operand 7 states. [2020-09-25 05:34:00,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:34:00,835 INFO L93 Difference]: Finished difference Result 2542 states and 3294 transitions. [2020-09-25 05:34:00,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 05:34:00,837 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 153 [2020-09-25 05:34:00,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:34:00,851 INFO L225 Difference]: With dead ends: 2542 [2020-09-25 05:34:00,851 INFO L226 Difference]: Without dead ends: 1665 [2020-09-25 05:34:00,858 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 05:34:00,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1665 states. [2020-09-25 05:34:00,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1665 to 1554. [2020-09-25 05:34:00,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1554 states. [2020-09-25 05:34:00,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 1939 transitions. [2020-09-25 05:34:00,956 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 1939 transitions. Word has length 153 [2020-09-25 05:34:00,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:34:00,957 INFO L479 AbstractCegarLoop]: Abstraction has 1554 states and 1939 transitions. [2020-09-25 05:34:00,957 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:34:00,957 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 1939 transitions. [2020-09-25 05:34:00,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-09-25 05:34:00,969 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:34:00,969 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] [2020-09-25 05:34:00,969 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:34:00,969 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:34:00,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:34:00,970 INFO L82 PathProgramCache]: Analyzing trace with hash 2020064762, now seen corresponding path program 1 times [2020-09-25 05:34:00,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:34:00,971 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [196790540] [2020-09-25 05:34:00,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:34:01,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:01,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:01,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:01,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:01,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:01,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:01,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:02,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:02,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:02,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:05,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:05,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:06,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:06,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-09-25 05:34:06,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 05:34:06,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 05:34:06,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:06,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:06,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:34:06,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-09-25 05:34:06,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-25 05:34:06,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:06,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:34:06,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:06,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:06,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:06,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:34:06,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:06,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 05:34:06,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:06,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:06,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:34:06,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:06,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:34:06,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:06,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:34:06,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:06,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:06,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:06,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 05:34:06,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:06,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-25 05:34:06,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:06,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:06,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:34:06,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:06,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 05:34:06,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 05:34:06,463 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 05:34:06,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [196790540] [2020-09-25 05:34:06,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:34:06,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:34:06,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974925534] [2020-09-25 05:34:06,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:34:06,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:34:06,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:34:06,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:34:06,472 INFO L87 Difference]: Start difference. First operand 1554 states and 1939 transitions. Second operand 5 states. [2020-09-25 05:34:08,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:34:08,694 INFO L93 Difference]: Finished difference Result 4289 states and 5562 transitions. [2020-09-25 05:34:08,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:34:08,694 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 178 [2020-09-25 05:34:08,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:34:08,713 INFO L225 Difference]: With dead ends: 4289 [2020-09-25 05:34:08,714 INFO L226 Difference]: Without dead ends: 2759 [2020-09-25 05:34:08,721 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:34:08,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2759 states. [2020-09-25 05:34:08,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2759 to 2420. [2020-09-25 05:34:08,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2420 states. [2020-09-25 05:34:08,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2420 states to 2420 states and 3040 transitions. [2020-09-25 05:34:08,821 INFO L78 Accepts]: Start accepts. Automaton has 2420 states and 3040 transitions. Word has length 178 [2020-09-25 05:34:08,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:34:08,821 INFO L479 AbstractCegarLoop]: Abstraction has 2420 states and 3040 transitions. [2020-09-25 05:34:08,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:34:08,821 INFO L276 IsEmpty]: Start isEmpty. Operand 2420 states and 3040 transitions. [2020-09-25 05:34:08,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-25 05:34:08,832 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:34:08,833 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:34:08,833 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:34:08,833 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:34:08,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:34:08,834 INFO L82 PathProgramCache]: Analyzing trace with hash 727992105, now seen corresponding path program 1 times [2020-09-25 05:34:08,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:34:08,834 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2115723274] [2020-09-25 05:34:08,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:34:08,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:08,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:09,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:09,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:10,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:10,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:10,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:10,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:12,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:13,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:13,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:13,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-25 05:34:13,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 05:34:13,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-09-25 05:34:13,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:13,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:13,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:34:13,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 05:34:13,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 05:34:13,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:13,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:34:13,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:14,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:14,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:14,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:34:14,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:14,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:34:14,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:14,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:14,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:34:14,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:14,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:34:14,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:14,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:34:14,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:14,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:14,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:14,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 05:34:14,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:14,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 05:34:14,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:14,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:14,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:34:14,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:14,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 05:34:14,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 05:34:14,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 05:34:14,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:14,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:14,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:14,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:34:14,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:14,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-25 05:34:14,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:14,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:14,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:34:14,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:34:14,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 05:34:14,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:14,340 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 46 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:34:14,341 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2115723274] [2020-09-25 05:34:14,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:34:14,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:34:14,342 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100880302] [2020-09-25 05:34:14,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:34:14,343 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:34:14,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:34:14,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:34:14,344 INFO L87 Difference]: Start difference. First operand 2420 states and 3040 transitions. Second operand 7 states. [2020-09-25 05:34:17,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:34:17,214 INFO L93 Difference]: Finished difference Result 5529 states and 7341 transitions. [2020-09-25 05:34:17,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 05:34:17,214 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 181 [2020-09-25 05:34:17,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:34:17,237 INFO L225 Difference]: With dead ends: 5529 [2020-09-25 05:34:17,237 INFO L226 Difference]: Without dead ends: 3133 [2020-09-25 05:34:17,247 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 05:34:17,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3133 states. [2020-09-25 05:34:17,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3133 to 2891. [2020-09-25 05:34:17,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2891 states. [2020-09-25 05:34:17,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2891 states to 2891 states and 3649 transitions. [2020-09-25 05:34:17,353 INFO L78 Accepts]: Start accepts. Automaton has 2891 states and 3649 transitions. Word has length 181 [2020-09-25 05:34:17,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:34:17,353 INFO L479 AbstractCegarLoop]: Abstraction has 2891 states and 3649 transitions. [2020-09-25 05:34:17,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:34:17,353 INFO L276 IsEmpty]: Start isEmpty. Operand 2891 states and 3649 transitions. [2020-09-25 05:34:17,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-09-25 05:34:17,366 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:34:17,366 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:34:17,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:34:17,366 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:34:17,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:34:17,367 INFO L82 PathProgramCache]: Analyzing trace with hash -807439965, now seen corresponding path program 1 times [2020-09-25 05:34:17,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:34:17,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1043232314] [2020-09-25 05:34:17,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:34:17,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:17,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:17,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:17,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:17,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:19,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:19,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:20,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking...