/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=0.6 --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/Problem10_label31.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:47:28,955 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:47:28,960 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:47:29,009 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:47:29,009 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:47:29,020 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:47:29,022 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:47:29,026 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:47:29,029 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:47:29,033 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:47:29,034 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:47:29,036 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:47:29,036 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:47:29,039 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:47:29,044 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:47:29,046 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:47:29,048 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:47:29,050 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:47:29,052 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:47:29,060 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:47:29,062 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:47:29,064 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:47:29,065 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:47:29,066 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:47:29,070 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:47:29,071 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:47:29,071 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:47:29,074 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:47:29,075 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:47:29,077 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:47:29,078 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:47:29,079 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:47:29,080 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:47:29,081 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:47:29,083 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:47:29,083 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:47:29,084 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:47:29,084 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:47:29,084 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:47:29,085 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:47:29,087 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:47:29,088 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 06:47:29,138 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:47:29,138 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:47:29,140 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:47:29,140 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:47:29,140 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:47:29,140 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:47:29,141 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:47:29,141 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:47:29,141 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:47:29,141 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:47:29,141 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:47:29,142 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:47:29,142 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:47:29,142 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:47:29,142 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:47:29,142 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:47:29,143 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:47:29,143 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:47:29,143 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:47:29,144 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:47:29,144 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:47:29,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:47:29,144 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:47:29,144 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:47:29,145 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:47:29,145 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:47:29,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:47:29,145 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:47:29,146 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:47:29,146 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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;log-additional-information=true; [2020-09-25 06:47:29,620 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:47:29,639 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:47:29,644 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:47:29,646 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:47:29,646 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:47:29,648 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label31.c [2020-09-25 06:47:29,747 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cf83acacc/0291e9a95fbe4b7198fd59b66ee2236c/FLAG4bfe5c8a3 [2020-09-25 06:47:30,433 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:47:30,434 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label31.c [2020-09-25 06:47:30,449 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cf83acacc/0291e9a95fbe4b7198fd59b66ee2236c/FLAG4bfe5c8a3 [2020-09-25 06:47:30,664 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cf83acacc/0291e9a95fbe4b7198fd59b66ee2236c [2020-09-25 06:47:30,677 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:47:30,682 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:47:30,683 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:47:30,683 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:47:30,688 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:47:30,689 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:47:30" (1/1) ... [2020-09-25 06:47:30,693 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e0fb9b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:30, skipping insertion in model container [2020-09-25 06:47:30,693 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:47:30" (1/1) ... [2020-09-25 06:47:30,703 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:47:30,765 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:47:31,330 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:47:31,336 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:47:31,450 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:47:31,471 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:47:31,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:31 WrapperNode [2020-09-25 06:47:31,473 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:47:31,474 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:47:31,477 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:47:31,478 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:47:31,496 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:31" (1/1) ... [2020-09-25 06:47:31,498 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:31" (1/1) ... [2020-09-25 06:47:31,523 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:31" (1/1) ... [2020-09-25 06:47:31,523 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:31" (1/1) ... [2020-09-25 06:47:31,563 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:31" (1/1) ... [2020-09-25 06:47:31,583 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:31" (1/1) ... [2020-09-25 06:47:31,590 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:31" (1/1) ... [2020-09-25 06:47:31,601 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:47:31,602 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:47:31,602 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:47:31,602 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:47:31,603 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:31" (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 06:47:31,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:47:31,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:47:31,703 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 06:47:31,703 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:47:31,703 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 06:47:31,704 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:47:31,704 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:47:31,705 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:47:31,705 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:47:31,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:47:31,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:47:33,234 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:47:33,234 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 06:47:33,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:47:33 BoogieIcfgContainer [2020-09-25 06:47:33,243 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:47:33,244 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:47:33,244 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:47:33,249 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:47:33,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:47:30" (1/3) ... [2020-09-25 06:47:33,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29bd595f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:47:33, skipping insertion in model container [2020-09-25 06:47:33,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:31" (2/3) ... [2020-09-25 06:47:33,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29bd595f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:47:33, skipping insertion in model container [2020-09-25 06:47:33,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:47:33" (3/3) ... [2020-09-25 06:47:33,254 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label31.c [2020-09-25 06:47:33,266 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:47:33,278 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:47:33,302 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:47:33,341 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:47:33,341 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:47:33,341 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:47:33,341 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:47:33,341 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:47:33,342 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:47:33,342 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:47:33,342 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:47:33,375 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 06:47:33,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-25 06:47:33,387 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:47:33,389 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] [2020-09-25 06:47:33,389 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:47:33,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:47:33,398 INFO L82 PathProgramCache]: Analyzing trace with hash -1703669257, now seen corresponding path program 1 times [2020-09-25 06:47:33,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:47:33,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1162636119] [2020-09-25 06:47:33,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:47:33,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:33,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:33,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:34,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:34,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:34,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 06:47:34,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:47:34,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1159 [2020-09-25 06:47:34,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:34,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:34,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:47:34,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:47:34,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-09-25 06:47:34,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 06:47:34,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:47:34,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:34,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:35,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:35,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:47:35,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:35,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 06:47:35,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:35,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:35,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:47:35,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:35,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:47:35,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:47:35,055 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 06:47:35,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1162636119] [2020-09-25 06:47:35,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:47:35,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:47:35,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066878729] [2020-09-25 06:47:35,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:47:35,068 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:47:35,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:47:35,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:47:35,092 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 06:47:37,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:47:37,203 INFO L93 Difference]: Finished difference Result 1104 states and 1521 transitions. [2020-09-25 06:47:37,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:47:37,211 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-09-25 06:47:37,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:47:37,236 INFO L225 Difference]: With dead ends: 1104 [2020-09-25 06:47:37,237 INFO L226 Difference]: Without dead ends: 578 [2020-09-25 06:47:37,248 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:47:37,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-25 06:47:37,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 544. [2020-09-25 06:47:37,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-25 06:47:37,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 655 transitions. [2020-09-25 06:47:37,346 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 655 transitions. Word has length 62 [2020-09-25 06:47:37,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:47:37,347 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 655 transitions. [2020-09-25 06:47:37,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:47:37,347 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 655 transitions. [2020-09-25 06:47:37,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-09-25 06:47:37,356 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:47:37,356 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:47:37,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:47:37,357 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:47:37,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:47:37,357 INFO L82 PathProgramCache]: Analyzing trace with hash -1996719641, now seen corresponding path program 1 times [2020-09-25 06:47:37,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:47:37,358 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1126254124] [2020-09-25 06:47:37,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:47:37,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:37,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:37,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:37,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:38,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:38,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:41,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:41,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-09-25 06:47:41,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 06:47:41,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4272 [2020-09-25 06:47:41,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:41,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:41,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:47:41,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 06:47:41,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 06:47:41,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:41,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:47:41,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:41,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:41,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:41,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:47:41,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:41,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:47:41,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:41,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:41,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:47:41,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:41,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:47:41,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:41,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:47:41,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:41,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:41,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:41,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 06:47:41,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:41,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-09-25 06:47:41,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:41,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:41,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:47:41,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:41,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 06:47:41,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:42,060 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 45 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:47:42,060 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1126254124] [2020-09-25 06:47:42,061 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:47:42,061 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:47:42,062 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503441702] [2020-09-25 06:47:42,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:47:42,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:47:42,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:47:42,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:47:42,066 INFO L87 Difference]: Start difference. First operand 544 states and 655 transitions. Second operand 5 states. [2020-09-25 06:47:43,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:47:43,742 INFO L93 Difference]: Finished difference Result 1224 states and 1530 transitions. [2020-09-25 06:47:43,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:47:43,742 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2020-09-25 06:47:43,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:47:43,748 INFO L225 Difference]: With dead ends: 1224 [2020-09-25 06:47:43,748 INFO L226 Difference]: Without dead ends: 695 [2020-09-25 06:47:43,751 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:47:43,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2020-09-25 06:47:43,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 695. [2020-09-25 06:47:43,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-25 06:47:43,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 850 transitions. [2020-09-25 06:47:43,787 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 850 transitions. Word has length 141 [2020-09-25 06:47:43,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:47:43,788 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 850 transitions. [2020-09-25 06:47:43,788 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:47:43,788 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 850 transitions. [2020-09-25 06:47:43,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-09-25 06:47:43,793 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:47:43,793 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, 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] [2020-09-25 06:47:43,793 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:47:43,794 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:47:43,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:47:43,794 INFO L82 PathProgramCache]: Analyzing trace with hash -617946683, now seen corresponding path program 1 times [2020-09-25 06:47:43,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:47:43,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [739965790] [2020-09-25 06:47:43,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:47:43,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:43,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:43,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:44,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:44,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:45,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:45,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:45,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:45,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:48,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:48,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-09-25 06:47:48,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 06:47:48,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 06:47:48,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:48,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:48,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:47:48,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 06:47:48,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 06:47:48,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:48,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:47:48,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:48,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:48,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:48,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:47:48,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:48,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 06:47:48,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:48,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:48,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:47:48,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:48,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:47:48,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:49,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:47:49,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:49,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:49,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:49,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 06:47:49,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:49,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-09-25 06:47:49,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:49,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:49,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:47:49,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:49,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 06:47:49,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:49,226 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 45 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:47:49,227 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [739965790] [2020-09-25 06:47:49,227 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:47:49,227 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 06:47:49,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192690711] [2020-09-25 06:47:49,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 06:47:49,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:47:49,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 06:47:49,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:47:49,231 INFO L87 Difference]: Start difference. First operand 695 states and 850 transitions. Second operand 6 states. [2020-09-25 06:47:52,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:47:52,244 INFO L93 Difference]: Finished difference Result 1905 states and 2481 transitions. [2020-09-25 06:47:52,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 06:47:52,245 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 151 [2020-09-25 06:47:52,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:47:52,255 INFO L225 Difference]: With dead ends: 1905 [2020-09-25 06:47:52,255 INFO L226 Difference]: Without dead ends: 1375 [2020-09-25 06:47:52,258 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:47:52,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1375 states. [2020-09-25 06:47:52,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1375 to 1319. [2020-09-25 06:47:52,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1319 states. [2020-09-25 06:47:52,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 1695 transitions. [2020-09-25 06:47:52,331 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 1695 transitions. Word has length 151 [2020-09-25 06:47:52,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:47:52,333 INFO L479 AbstractCegarLoop]: Abstraction has 1319 states and 1695 transitions. [2020-09-25 06:47:52,333 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 06:47:52,333 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 1695 transitions. [2020-09-25 06:47:52,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-25 06:47:52,346 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:47:52,348 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, 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] [2020-09-25 06:47:52,348 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:47:52,348 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:47:52,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:47:52,349 INFO L82 PathProgramCache]: Analyzing trace with hash -1755229107, now seen corresponding path program 1 times [2020-09-25 06:47:52,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:47:52,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1343898032] [2020-09-25 06:47:52,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:47:52,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:52,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:52,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:52,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:54,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:54,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-09-25 06:47:54,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:47:54,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2285 [2020-09-25 06:47:54,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:54,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:54,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:47:54,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 06:47:54,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 06:47:54,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:54,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:47:54,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:54,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:54,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:54,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:47:54,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:54,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 06:47:54,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:54,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:54,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:47:54,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:54,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:47:54,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:54,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:47:54,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:54,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:54,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:54,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 06:47:54,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:54,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-09-25 06:47:54,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:54,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:54,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:47:54,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:47:54,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 06:47:54,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:55,030 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:47:55,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1343898032] [2020-09-25 06:47:55,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:47:55,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:47:55,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357667629] [2020-09-25 06:47:55,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:47:55,034 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:47:55,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:47:55,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:47:55,035 INFO L87 Difference]: Start difference. First operand 1319 states and 1695 transitions. Second operand 7 states. [2020-09-25 06:47:57,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:47:57,603 INFO L93 Difference]: Finished difference Result 3319 states and 4494 transitions. [2020-09-25 06:47:57,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 06:47:57,605 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 153 [2020-09-25 06:47:57,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:47:57,623 INFO L225 Difference]: With dead ends: 3319 [2020-09-25 06:47:57,623 INFO L226 Difference]: Without dead ends: 2165 [2020-09-25 06:47:57,630 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:47:57,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2165 states. [2020-09-25 06:47:57,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2165 to 1811. [2020-09-25 06:47:57,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1811 states. [2020-09-25 06:47:57,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1811 states to 1811 states and 2265 transitions. [2020-09-25 06:47:57,715 INFO L78 Accepts]: Start accepts. Automaton has 1811 states and 2265 transitions. Word has length 153 [2020-09-25 06:47:57,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:47:57,716 INFO L479 AbstractCegarLoop]: Abstraction has 1811 states and 2265 transitions. [2020-09-25 06:47:57,716 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:47:57,716 INFO L276 IsEmpty]: Start isEmpty. Operand 1811 states and 2265 transitions. [2020-09-25 06:47:57,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-09-25 06:47:57,724 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:47:57,725 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 06:47:57,725 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:47:57,725 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:47:57,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:47:57,726 INFO L82 PathProgramCache]: Analyzing trace with hash 100721030, now seen corresponding path program 1 times [2020-09-25 06:47:57,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:47:57,726 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [115537629] [2020-09-25 06:47:57,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:47:57,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:57,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:58,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:58,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:59,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:59,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:01,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:01,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:01,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-09-25 06:48:01,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:48:01,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4096 [2020-09-25 06:48:01,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:01,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:01,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:48:01,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-25 06:48:01,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-09-25 06:48:01,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:01,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:48:01,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:01,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:01,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:01,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:48:01,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:01,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:48:01,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:01,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:01,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:48:01,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:01,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:48:01,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:01,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:48:02,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:02,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:02,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:02,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 06:48:02,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:02,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-25 06:48:02,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:02,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:02,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:48:02,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:02,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 06:48:02,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:02,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 06:48:02,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:02,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:02,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:02,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:02,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-09-25 06:48:02,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:48:02,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-09-25 06:48:02,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:02,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:02,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:48:02,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:48:02,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-25 06:48:02,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:02,492 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 115 proven. 42 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 06:48:02,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [115537629] [2020-09-25 06:48:02,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:48:02,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:48:02,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926876687] [2020-09-25 06:48:02,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:48:02,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:48:02,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:48:02,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:48:02,495 INFO L87 Difference]: Start difference. First operand 1811 states and 2265 transitions. Second operand 7 states. [2020-09-25 06:48:04,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:48:04,954 INFO L93 Difference]: Finished difference Result 4283 states and 5647 transitions. [2020-09-25 06:48:04,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 06:48:04,955 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 252 [2020-09-25 06:48:04,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:48:04,972 INFO L225 Difference]: With dead ends: 4283 [2020-09-25 06:48:04,972 INFO L226 Difference]: Without dead ends: 2637 [2020-09-25 06:48:04,980 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:48:04,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2637 states. [2020-09-25 06:48:05,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2637 to 2299. [2020-09-25 06:48:05,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2299 states. [2020-09-25 06:48:05,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2299 states to 2299 states and 2828 transitions. [2020-09-25 06:48:05,076 INFO L78 Accepts]: Start accepts. Automaton has 2299 states and 2828 transitions. Word has length 252 [2020-09-25 06:48:05,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:48:05,077 INFO L479 AbstractCegarLoop]: Abstraction has 2299 states and 2828 transitions. [2020-09-25 06:48:05,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:48:05,077 INFO L276 IsEmpty]: Start isEmpty. Operand 2299 states and 2828 transitions. [2020-09-25 06:48:05,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-09-25 06:48:05,084 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:48:05,084 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 06:48:05,084 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:48:05,084 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:48:05,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:48:05,085 INFO L82 PathProgramCache]: Analyzing trace with hash 1455418807, now seen corresponding path program 1 times [2020-09-25 06:48:05,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:48:05,085 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [406358887] [2020-09-25 06:48:05,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:48:05,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:05,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:05,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:05,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:05,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:06,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:06,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:10,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:10,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-09-25 06:48:10,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:48:10,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 06:48:10,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:10,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:10,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:48:10,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-25 06:48:10,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-25 06:48:10,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:10,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:48:10,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:10,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:10,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:10,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:48:10,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:10,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:48:10,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:10,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:10,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:48:10,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:10,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:48:10,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:10,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:48:10,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:10,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:10,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:10,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 06:48:10,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:10,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-25 06:48:10,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:10,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:10,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:48:10,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:10,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 06:48:10,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:10,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 06:48:10,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:10,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:10,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:10,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 06:48:10,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:10,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-09-25 06:48:10,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:10,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:10,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:48:10,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:48:10,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 06:48:10,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:10,655 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 174 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:48:10,656 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [406358887] [2020-09-25 06:48:10,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:48:10,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:48:10,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103450933] [2020-09-25 06:48:10,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:48:10,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:48:10,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:48:10,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:48:10,659 INFO L87 Difference]: Start difference. First operand 2299 states and 2828 transitions. Second operand 7 states. [2020-09-25 06:48:13,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:48:13,020 INFO L93 Difference]: Finished difference Result 5423 states and 6923 transitions. [2020-09-25 06:48:13,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 06:48:13,021 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 253 [2020-09-25 06:48:13,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:48:13,033 INFO L225 Difference]: With dead ends: 5423 [2020-09-25 06:48:13,033 INFO L226 Difference]: Without dead ends: 2177 [2020-09-25 06:48:13,044 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-09-25 06:48:13,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2177 states. [2020-09-25 06:48:13,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2177 to 2101. [2020-09-25 06:48:13,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2101 states. [2020-09-25 06:48:13,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2101 states to 2101 states and 2546 transitions. [2020-09-25 06:48:13,111 INFO L78 Accepts]: Start accepts. Automaton has 2101 states and 2546 transitions. Word has length 253 [2020-09-25 06:48:13,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:48:13,112 INFO L479 AbstractCegarLoop]: Abstraction has 2101 states and 2546 transitions. [2020-09-25 06:48:13,112 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:48:13,112 INFO L276 IsEmpty]: Start isEmpty. Operand 2101 states and 2546 transitions. [2020-09-25 06:48:13,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2020-09-25 06:48:13,122 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:48:13,122 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 06:48:13,122 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 06:48:13,123 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:48:13,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:48:13,123 INFO L82 PathProgramCache]: Analyzing trace with hash 1285871462, now seen corresponding path program 1 times [2020-09-25 06:48:13,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:48:13,124 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2035041257] [2020-09-25 06:48:13,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:48:13,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:13,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:13,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:13,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:15,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:15,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 332 [2020-09-25 06:48:15,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:48:15,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2321 [2020-09-25 06:48:15,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:15,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:15,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:48:15,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 163 [2020-09-25 06:48:15,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-09-25 06:48:15,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:15,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:48:15,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:15,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:15,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:15,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:48:15,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:15,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:48:15,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:15,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:15,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:48:15,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:15,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:48:15,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:15,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:48:15,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:15,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:15,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:15,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 06:48:15,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:15,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-25 06:48:15,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:15,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:15,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:48:15,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:15,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-09-25 06:48:15,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:48:15,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-09-25 06:48:15,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:15,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:15,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:16,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:16,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-09-25 06:48:16,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:48:16,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-09-25 06:48:16,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:16,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:16,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:48:16,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:16,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 06:48:16,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:48:16,126 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 90 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-09-25 06:48:16,127 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2035041257] [2020-09-25 06:48:16,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:48:16,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:48:16,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797447869] [2020-09-25 06:48:16,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:48:16,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:48:16,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:48:16,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:48:16,129 INFO L87 Difference]: Start difference. First operand 2101 states and 2546 transitions. Second operand 5 states. [2020-09-25 06:48:17,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:48:17,928 INFO L93 Difference]: Finished difference Result 4662 states and 5910 transitions. [2020-09-25 06:48:17,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:48:17,931 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 319 [2020-09-25 06:48:17,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:48:17,946 INFO L225 Difference]: With dead ends: 4662 [2020-09-25 06:48:17,946 INFO L226 Difference]: Without dead ends: 2726 [2020-09-25 06:48:17,954 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30