/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --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_label35.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:36:58,973 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:36:58,977 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:36:59,004 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:36:59,004 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:36:59,005 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:36:59,007 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:36:59,009 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:36:59,010 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:36:59,012 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:36:59,013 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:36:59,014 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:36:59,014 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:36:59,015 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:36:59,016 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:36:59,018 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:36:59,019 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:36:59,019 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:36:59,021 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:36:59,023 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:36:59,025 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:36:59,026 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:36:59,027 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:36:59,028 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:36:59,031 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:36:59,031 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:36:59,031 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:36:59,032 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:36:59,033 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:36:59,034 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:36:59,034 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:36:59,035 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:36:59,036 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:36:59,037 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:36:59,038 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:36:59,038 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:36:59,039 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:36:59,039 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:36:59,039 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:36:59,040 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:36:59,041 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:36:59,042 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 14:36:59,068 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:36:59,068 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:36:59,076 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:36:59,076 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:36:59,076 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:36:59,077 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:36:59,077 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:36:59,077 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:36:59,077 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:36:59,077 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:36:59,078 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:36:59,078 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:36:59,078 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:36:59,078 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:36:59,078 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:36:59,079 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:36:59,082 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:36:59,082 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:36:59,082 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:36:59,083 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:36:59,083 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:36:59,083 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:36:59,083 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:36:59,083 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:36:59,085 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:36:59,085 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:36:59,085 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:36:59,085 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:36:59,086 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:36:59,086 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-09-25 14:36:59,596 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:36:59,613 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:36:59,618 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:36:59,619 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:36:59,620 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:36:59,621 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label35.c [2020-09-25 14:36:59,698 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4320fcaf7/f9e60cdf34214b8c8c746327b43b970a/FLAGaa7908019 [2020-09-25 14:37:00,362 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:37:00,368 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label35.c [2020-09-25 14:37:00,392 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4320fcaf7/f9e60cdf34214b8c8c746327b43b970a/FLAGaa7908019 [2020-09-25 14:37:00,581 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4320fcaf7/f9e60cdf34214b8c8c746327b43b970a [2020-09-25 14:37:00,596 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:37:00,602 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:37:00,603 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:37:00,604 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:37:00,608 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:37:00,609 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:37:00" (1/1) ... [2020-09-25 14:37:00,613 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@88af870 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:00, skipping insertion in model container [2020-09-25 14:37:00,614 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:37:00" (1/1) ... [2020-09-25 14:37:00,623 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:37:00,684 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:37:01,207 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:37:01,216 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:37:01,415 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:37:01,434 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:37:01,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:01 WrapperNode [2020-09-25 14:37:01,435 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:37:01,436 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:37:01,436 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:37:01,436 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:37:01,450 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:01" (1/1) ... [2020-09-25 14:37:01,451 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:01" (1/1) ... [2020-09-25 14:37:01,470 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:01" (1/1) ... [2020-09-25 14:37:01,470 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:01" (1/1) ... [2020-09-25 14:37:01,517 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:01" (1/1) ... [2020-09-25 14:37:01,534 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:01" (1/1) ... [2020-09-25 14:37:01,544 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:01" (1/1) ... [2020-09-25 14:37:01,555 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:37:01,555 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:37:01,556 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:37:01,556 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:37:01,557 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:01" (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 14:37:01,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:37:01,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:37:01,630 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 14:37:01,630 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:37:01,630 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 14:37:01,631 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:37:01,631 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:37:01,631 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:37:01,631 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:37:01,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:37:01,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:37:03,040 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:37:03,041 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:37:03,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:37:03 BoogieIcfgContainer [2020-09-25 14:37:03,050 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:37:03,052 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:37:03,052 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:37:03,056 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:37:03,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:37:00" (1/3) ... [2020-09-25 14:37:03,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ece744c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:37:03, skipping insertion in model container [2020-09-25 14:37:03,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:01" (2/3) ... [2020-09-25 14:37:03,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ece744c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:37:03, skipping insertion in model container [2020-09-25 14:37:03,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:37:03" (3/3) ... [2020-09-25 14:37:03,061 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label35.c [2020-09-25 14:37:03,074 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:37:03,085 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:37:03,108 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:37:03,143 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:37:03,144 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:37:03,144 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:37:03,144 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:37:03,144 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:37:03,144 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:37:03,145 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:37:03,145 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:37:03,178 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 14:37:03,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-09-25 14:37:03,198 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:37:03,200 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] [2020-09-25 14:37:03,200 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:37:03,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:37:03,209 INFO L82 PathProgramCache]: Analyzing trace with hash -850053121, now seen corresponding path program 1 times [2020-09-25 14:37:03,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:37:03,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [316023275] [2020-09-25 14:37:03,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:37:03,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:03,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:03,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:04,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:05,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:05,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:06,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:08,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:08,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-09-25 14:37:08,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:37:08,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 14:37:08,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:08,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:08,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:37:08,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 14:37:08,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 14:37:08,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 14:37:08,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:37:08,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:08,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:08,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:08,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:37:08,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:08,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 14:37:08,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:08,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:08,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:37:08,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:08,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 14:37:08,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:08,823 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 14:37:08,824 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [316023275] [2020-09-25 14:37:08,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:37:08,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:37:08,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489195652] [2020-09-25 14:37:08,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:37:08,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:37:08,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:37:08,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:37:08,869 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 14:37:11,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:37:11,068 INFO L93 Difference]: Finished difference Result 1231 states and 1630 transitions. [2020-09-25 14:37:11,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:37:11,070 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 108 [2020-09-25 14:37:11,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:37:11,095 INFO L225 Difference]: With dead ends: 1231 [2020-09-25 14:37:11,096 INFO L226 Difference]: Without dead ends: 657 [2020-09-25 14:37:11,106 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 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 14:37:11,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2020-09-25 14:37:11,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 603. [2020-09-25 14:37:11,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 14:37:11,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 707 transitions. [2020-09-25 14:37:11,249 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 707 transitions. Word has length 108 [2020-09-25 14:37:11,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:37:11,251 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 707 transitions. [2020-09-25 14:37:11,251 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:37:11,251 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 707 transitions. [2020-09-25 14:37:11,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-09-25 14:37:11,259 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:37:11,259 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 14:37:11,260 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:37:11,260 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:37:11,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:37:11,261 INFO L82 PathProgramCache]: Analyzing trace with hash 626429774, now seen corresponding path program 1 times [2020-09-25 14:37:11,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:37:11,261 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1763202043] [2020-09-25 14:37:11,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:37:11,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:11,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:11,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:11,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-25 14:37:11,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:11,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 363 [2020-09-25 14:37:11,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:11,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:11,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:37:11,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 14:37:11,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 14:37:11,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:11,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:37:11,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:11,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:11,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:11,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:37:11,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:11,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 14:37:11,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:11,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:11,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:37:11,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:11,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:37:11,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:11,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:37:11,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:11,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:11,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:11,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 14:37:11,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:11,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 14:37:11,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:11,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:11,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:37:11,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:11,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:37:11,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:11,913 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:37:11,914 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1763202043] [2020-09-25 14:37:11,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:37:11,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:37:11,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285314782] [2020-09-25 14:37:11,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:37:11,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:37:11,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:37:11,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:37:11,918 INFO L87 Difference]: Start difference. First operand 603 states and 707 transitions. Second operand 5 states. [2020-09-25 14:37:13,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:37:13,972 INFO L93 Difference]: Finished difference Result 1499 states and 1830 transitions. [2020-09-25 14:37:13,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:37:13,973 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2020-09-25 14:37:13,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:37:13,984 INFO L225 Difference]: With dead ends: 1499 [2020-09-25 14:37:13,984 INFO L226 Difference]: Without dead ends: 920 [2020-09-25 14:37:13,991 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:37:13,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2020-09-25 14:37:14,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 891. [2020-09-25 14:37:14,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 891 states. [2020-09-25 14:37:14,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1042 transitions. [2020-09-25 14:37:14,048 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1042 transitions. Word has length 129 [2020-09-25 14:37:14,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:37:14,050 INFO L479 AbstractCegarLoop]: Abstraction has 891 states and 1042 transitions. [2020-09-25 14:37:14,050 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:37:14,050 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1042 transitions. [2020-09-25 14:37:14,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-09-25 14:37:14,055 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:37:14,055 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] [2020-09-25 14:37:14,055 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:37:14,056 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:37:14,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:37:14,056 INFO L82 PathProgramCache]: Analyzing trace with hash -1590256115, now seen corresponding path program 1 times [2020-09-25 14:37:14,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:37:14,057 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1874011779] [2020-09-25 14:37:14,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:37:14,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:14,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:14,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:14,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:14,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:15,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:15,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:15,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:15,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:17,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:17,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:18,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:18,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:19,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:19,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:19,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-09-25 14:37:19,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 14:37:19,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 14:37:19,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:19,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:19,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:37:19,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 14:37:19,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 14:37:19,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:37:19,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:37:19,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:19,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:19,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:19,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:37:19,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:19,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 14:37:19,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:19,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:19,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:37:19,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:19,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:37:19,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:19,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:37:19,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:19,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:19,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:19,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:37:19,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:19,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 14:37:19,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:19,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:19,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:37:19,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:19,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:37:19,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:19,351 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:37:19,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1874011779] [2020-09-25 14:37:19,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:37:19,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:37:19,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270105016] [2020-09-25 14:37:19,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:37:19,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:37:19,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:37:19,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:37:19,355 INFO L87 Difference]: Start difference. First operand 891 states and 1042 transitions. Second operand 5 states. [2020-09-25 14:37:21,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:37:21,831 INFO L93 Difference]: Finished difference Result 2135 states and 2558 transitions. [2020-09-25 14:37:21,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:37:21,833 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2020-09-25 14:37:21,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:37:21,847 INFO L225 Difference]: With dead ends: 2135 [2020-09-25 14:37:21,847 INFO L226 Difference]: Without dead ends: 1268 [2020-09-25 14:37:21,851 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:37:21,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1268 states. [2020-09-25 14:37:21,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1268 to 1177. [2020-09-25 14:37:21,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1177 states. [2020-09-25 14:37:21,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1397 transitions. [2020-09-25 14:37:21,892 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1397 transitions. Word has length 130 [2020-09-25 14:37:21,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:37:21,893 INFO L479 AbstractCegarLoop]: Abstraction has 1177 states and 1397 transitions. [2020-09-25 14:37:21,893 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:37:21,893 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1397 transitions. [2020-09-25 14:37:21,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-25 14:37:21,898 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:37:21,899 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:37:21,899 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:37:21,899 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:37:21,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:37:21,900 INFO L82 PathProgramCache]: Analyzing trace with hash -918744726, now seen corresponding path program 1 times [2020-09-25 14:37:21,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:37:21,900 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [712913766] [2020-09-25 14:37:21,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:37:21,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:21,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:22,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:22,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:22,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:23,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:24,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:26,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:26,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-09-25 14:37:26,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:37:26,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-09-25 14:37:26,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:26,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:26,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:37:26,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-09-25 14:37:26,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-09-25 14:37:26,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:27,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:37:27,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:27,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:27,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:27,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:37:27,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:27,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 14:37:27,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:27,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:27,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:37:27,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:27,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:37:27,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:27,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:37:27,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:27,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:27,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:27,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 14:37:27,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:27,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 14:37:27,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:27,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:27,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:37:27,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:27,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 14:37:27,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:27,280 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:37:27,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [712913766] [2020-09-25 14:37:27,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:37:27,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:37:27,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401898587] [2020-09-25 14:37:27,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:37:27,282 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:37:27,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:37:27,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:37:27,283 INFO L87 Difference]: Start difference. First operand 1177 states and 1397 transitions. Second operand 5 states. [2020-09-25 14:37:29,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:37:29,079 INFO L93 Difference]: Finished difference Result 3078 states and 3763 transitions. [2020-09-25 14:37:29,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:37:29,080 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-09-25 14:37:29,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:37:29,091 INFO L225 Difference]: With dead ends: 3078 [2020-09-25 14:37:29,091 INFO L226 Difference]: Without dead ends: 1777 [2020-09-25 14:37:29,097 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:37:29,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1777 states. [2020-09-25 14:37:29,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1777 to 1744. [2020-09-25 14:37:29,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1744 states. [2020-09-25 14:37:29,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1744 states to 1744 states and 2092 transitions. [2020-09-25 14:37:29,155 INFO L78 Accepts]: Start accepts. Automaton has 1744 states and 2092 transitions. Word has length 143 [2020-09-25 14:37:29,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:37:29,156 INFO L479 AbstractCegarLoop]: Abstraction has 1744 states and 2092 transitions. [2020-09-25 14:37:29,156 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:37:29,156 INFO L276 IsEmpty]: Start isEmpty. Operand 1744 states and 2092 transitions. [2020-09-25 14:37:29,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-25 14:37:29,162 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:37:29,162 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:37:29,163 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:37:29,163 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:37:29,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:37:29,163 INFO L82 PathProgramCache]: Analyzing trace with hash -247402504, now seen corresponding path program 1 times [2020-09-25 14:37:29,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:37:29,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [812366317] [2020-09-25 14:37:29,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:37:29,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:29,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:29,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:29,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:29,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:29,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:29,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:34,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:34,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-25 14:37:34,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:37:34,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 14:37:34,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:34,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:34,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:37:34,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 14:37:34,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 14:37:34,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:37:34,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:37:34,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:34,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:34,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:34,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:37:34,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:34,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 14:37:34,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:34,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:34,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:37:34,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:34,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 14:37:34,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:37:34,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:37:34,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:34,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:34,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:34,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:34,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 14:37:34,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:37:34,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-25 14:37:34,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:34,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:34,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:37:34,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:37:34,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 14:37:34,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:34,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 14:37:34,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:34,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:34,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:34,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 14:37:34,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:34,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-25 14:37:34,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:34,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:34,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:37:34,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:37:34,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 14:37:34,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:34,621 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 39 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 14:37:34,622 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [812366317] [2020-09-25 14:37:34,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:37:34,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 14:37:34,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431425216] [2020-09-25 14:37:34,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 14:37:34,624 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:37:34,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 14:37:34,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-09-25 14:37:34,626 INFO L87 Difference]: Start difference. First operand 1744 states and 2092 transitions. Second operand 10 states. [2020-09-25 14:37:34,879 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2020-09-25 14:37:36,390 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2020-09-25 14:37:39,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:37:39,016 INFO L93 Difference]: Finished difference Result 4565 states and 5609 transitions. [2020-09-25 14:37:39,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-25 14:37:39,016 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 154 [2020-09-25 14:37:39,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:37:39,027 INFO L225 Difference]: With dead ends: 4565 [2020-09-25 14:37:39,028 INFO L226 Difference]: Without dead ends: 2267 [2020-09-25 14:37:39,038 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=143, Invalid=409, Unknown=0, NotChecked=0, Total=552 [2020-09-25 14:37:39,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2267 states. [2020-09-25 14:37:39,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2267 to 2103. [2020-09-25 14:37:39,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2103 states. [2020-09-25 14:37:39,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2103 states to 2103 states and 2376 transitions. [2020-09-25 14:37:39,120 INFO L78 Accepts]: Start accepts. Automaton has 2103 states and 2376 transitions. Word has length 154 [2020-09-25 14:37:39,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:37:39,121 INFO L479 AbstractCegarLoop]: Abstraction has 2103 states and 2376 transitions. [2020-09-25 14:37:39,121 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 14:37:39,121 INFO L276 IsEmpty]: Start isEmpty. Operand 2103 states and 2376 transitions. [2020-09-25 14:37:39,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-09-25 14:37:39,127 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:37:39,127 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 14:37:39,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:37:39,128 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:37:39,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:37:39,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1106704956, now seen corresponding path program 1 times [2020-09-25 14:37:39,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:37:39,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1955325635] [2020-09-25 14:37:39,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:37:39,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:39,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:39,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:39,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:39,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:40,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:40,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:40,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:40,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:44,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:44,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-09-25 14:37:44,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:37:44,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 14:37:44,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:44,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:44,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:37:44,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 14:37:44,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 14:37:44,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:44,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:37:44,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:44,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:44,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:44,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:37:44,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:44,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 14:37:44,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:44,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:44,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:37:44,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:44,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 14:37:44,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:44,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:37:44,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:44,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:44,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:44,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:37:44,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:44,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-25 14:37:44,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:44,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:44,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:37:44,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:37:44,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 14:37:44,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:44,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-25 14:37:44,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:44,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:44,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:44,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 14:37:44,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:44,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 14:37:44,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:44,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:44,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:37:44,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 14:37:44,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:37:44,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:44,633 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 33 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 14:37:44,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1955325635] [2020-09-25 14:37:44,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:37:44,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 14:37:44,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585383929] [2020-09-25 14:37:44,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 14:37:44,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:37:44,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 14:37:44,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:37:44,636 INFO L87 Difference]: Start difference. First operand 2103 states and 2376 transitions. Second operand 8 states. [2020-09-25 14:37:45,245 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63