/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=0.1 --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/Problem11_label36.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:12:59,964 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:12:59,968 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:12:59,994 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:12:59,995 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:12:59,996 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:12:59,997 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:12:59,999 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:13:00,001 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:13:00,002 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:13:00,003 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:13:00,004 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:13:00,005 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:13:00,006 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:13:00,007 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:13:00,008 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:13:00,009 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:13:00,010 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:13:00,012 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:13:00,015 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:13:00,016 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:13:00,018 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:13:00,019 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:13:00,020 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:13:00,023 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:13:00,023 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:13:00,023 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:13:00,024 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:13:00,025 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:13:00,026 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:13:00,026 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:13:00,027 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:13:00,028 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:13:00,029 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:13:00,030 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:13:00,030 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:13:00,031 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:13:00,031 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:13:00,031 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:13:00,032 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:13:00,033 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:13:00,034 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 10:13:00,060 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:13:00,060 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:13:00,062 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:13:00,062 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:13:00,062 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:13:00,062 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:13:00,063 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:13:00,063 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:13:00,063 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:13:00,063 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:13:00,063 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:13:00,064 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:13:00,064 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:13:00,064 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:13:00,064 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:13:00,064 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:13:00,065 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:13:00,065 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:13:00,065 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:13:00,065 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:13:00,065 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:13:00,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:13:00,066 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:13:00,066 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:13:00,066 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:13:00,066 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:13:00,067 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:13:00,067 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:13:00,067 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:13:00,067 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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;log-additional-information=true; [2020-09-25 10:13:00,536 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:13:00,554 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:13:00,559 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:13:00,561 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:13:00,562 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:13:00,563 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label36.c [2020-09-25 10:13:00,660 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b9f10c1f/ec6cd6a32558432c99dae1a0918a7e0f/FLAG9c48d525f [2020-09-25 10:13:01,372 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:13:01,373 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label36.c [2020-09-25 10:13:01,392 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b9f10c1f/ec6cd6a32558432c99dae1a0918a7e0f/FLAG9c48d525f [2020-09-25 10:13:01,518 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b9f10c1f/ec6cd6a32558432c99dae1a0918a7e0f [2020-09-25 10:13:01,533 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:13:01,540 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:13:01,543 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:13:01,543 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:13:01,548 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:13:01,549 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:13:01" (1/1) ... [2020-09-25 10:13:01,554 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41395291 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:01, skipping insertion in model container [2020-09-25 10:13:01,555 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:13:01" (1/1) ... [2020-09-25 10:13:01,565 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:13:01,651 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:13:02,598 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:13:02,607 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:13:02,744 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:13:02,764 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:13:02,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:02 WrapperNode [2020-09-25 10:13:02,765 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:13:02,766 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:13:02,766 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:13:02,767 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:13:02,786 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:02" (1/1) ... [2020-09-25 10:13:02,787 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:02" (1/1) ... [2020-09-25 10:13:02,819 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:02" (1/1) ... [2020-09-25 10:13:02,824 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:02" (1/1) ... [2020-09-25 10:13:02,887 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:02" (1/1) ... [2020-09-25 10:13:02,924 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:02" (1/1) ... [2020-09-25 10:13:02,943 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:02" (1/1) ... [2020-09-25 10:13:02,953 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:13:02,954 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:13:02,955 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:13:02,955 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:13:02,956 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:02" (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 10:13:03,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:13:03,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:13:03,059 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:13:03,059 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:13:03,059 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:13:03,059 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:13:03,060 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:13:03,061 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:13:03,061 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:13:03,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:13:03,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:13:05,592 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:13:05,592 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:13:05,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:13:05 BoogieIcfgContainer [2020-09-25 10:13:05,613 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:13:05,614 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:13:05,618 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:13:05,623 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:13:05,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:13:01" (1/3) ... [2020-09-25 10:13:05,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79bb9cf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:13:05, skipping insertion in model container [2020-09-25 10:13:05,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:02" (2/3) ... [2020-09-25 10:13:05,627 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79bb9cf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:13:05, skipping insertion in model container [2020-09-25 10:13:05,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:13:05" (3/3) ... [2020-09-25 10:13:05,631 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label36.c [2020-09-25 10:13:05,644 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:13:05,662 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:13:05,687 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:13:05,736 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:13:05,738 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:13:05,738 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:13:05,738 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:13:05,738 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:13:05,739 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:13:05,739 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:13:05,739 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:13:05,786 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states. [2020-09-25 10:13:05,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 10:13:05,797 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:13:05,798 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] [2020-09-25 10:13:05,799 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:13:05,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:13:05,807 INFO L82 PathProgramCache]: Analyzing trace with hash -1149620956, now seen corresponding path program 1 times [2020-09-25 10:13:05,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:13:05,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1516189109] [2020-09-25 10:13:05,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:13:06,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:06,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:06,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:06,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:06,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:06,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 10:13:06,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:13:06,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 860 [2020-09-25 10:13:06,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:06,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:06,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:13:06,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:13:06,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 10:13:06,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 10:13:07,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:13:07,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:07,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:07,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:07,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 10:13:07,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:07,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 10:13:07,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:07,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:07,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:13:07,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:07,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 10:13:07,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:07,106 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 10:13:07,107 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1516189109] [2020-09-25 10:13:07,109 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:13:07,109 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:13:07,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139281421] [2020-09-25 10:13:07,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:13:07,118 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:13:07,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:13:07,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:13:07,140 INFO L87 Difference]: Start difference. First operand 813 states. Second operand 4 states. [2020-09-25 10:13:11,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:13:11,266 INFO L93 Difference]: Finished difference Result 1957 states and 2552 transitions. [2020-09-25 10:13:11,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:13:11,268 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-09-25 10:13:11,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:13:11,299 INFO L225 Difference]: With dead ends: 1957 [2020-09-25 10:13:11,300 INFO L226 Difference]: Without dead ends: 1087 [2020-09-25 10:13:11,316 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 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 10:13:11,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1087 states. [2020-09-25 10:13:11,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1087 to 1039. [2020-09-25 10:13:11,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1039 states. [2020-09-25 10:13:11,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 1227 transitions. [2020-09-25 10:13:11,455 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 1227 transitions. Word has length 34 [2020-09-25 10:13:11,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:13:11,455 INFO L479 AbstractCegarLoop]: Abstraction has 1039 states and 1227 transitions. [2020-09-25 10:13:11,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:13:11,456 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 1227 transitions. [2020-09-25 10:13:11,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-09-25 10:13:11,463 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:13:11,463 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:13:11,464 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:13:11,464 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:13:11,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:13:11,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1328266352, now seen corresponding path program 1 times [2020-09-25 10:13:11,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:13:11,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [226032824] [2020-09-25 10:13:11,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:13:11,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:11,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:11,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:12,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:12,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:14,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:14,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-09-25 10:13:14,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 10:13:14,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3014 [2020-09-25 10:13:14,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:14,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:14,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:13:14,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 10:13:14,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 10:13:14,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:14,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:13:14,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:14,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:14,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:14,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 10:13:14,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:14,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 10:13:14,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:14,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:14,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:13:14,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:14,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 10:13:14,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:14,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 10:13:14,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:14,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:14,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:14,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 10:13:14,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:14,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-09-25 10:13:14,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:14,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:14,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:13:14,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:13:14,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 10:13:14,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:14,999 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:13:15,000 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [226032824] [2020-09-25 10:13:15,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:13:15,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 10:13:15,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824039146] [2020-09-25 10:13:15,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 10:13:15,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:13:15,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 10:13:15,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:13:15,005 INFO L87 Difference]: Start difference. First operand 1039 states and 1227 transitions. Second operand 7 states. [2020-09-25 10:13:19,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:13:19,747 INFO L93 Difference]: Finished difference Result 2751 states and 3333 transitions. [2020-09-25 10:13:19,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 10:13:19,748 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 116 [2020-09-25 10:13:19,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:13:19,758 INFO L225 Difference]: With dead ends: 2751 [2020-09-25 10:13:19,758 INFO L226 Difference]: Without dead ends: 1729 [2020-09-25 10:13:19,763 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 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 10:13:19,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1729 states. [2020-09-25 10:13:19,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1729 to 1444. [2020-09-25 10:13:19,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1444 states. [2020-09-25 10:13:19,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 1752 transitions. [2020-09-25 10:13:19,812 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 1752 transitions. Word has length 116 [2020-09-25 10:13:19,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:13:19,813 INFO L479 AbstractCegarLoop]: Abstraction has 1444 states and 1752 transitions. [2020-09-25 10:13:19,813 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 10:13:19,813 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 1752 transitions. [2020-09-25 10:13:19,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-09-25 10:13:19,816 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:13:19,816 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:13:19,817 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:13:19,817 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:13:19,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:13:19,818 INFO L82 PathProgramCache]: Analyzing trace with hash -2011577567, now seen corresponding path program 1 times [2020-09-25 10:13:19,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:13:19,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [92907543] [2020-09-25 10:13:19,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:13:19,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:19,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:19,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:20,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:20,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:21,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:22,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:24,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:24,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-09-25 10:13:24,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:13:24,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 10:13:24,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:24,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:24,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:13:24,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 10:13:24,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 10:13:24,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:24,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:13:24,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:24,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:25,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:25,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 10:13:25,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:25,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 10:13:25,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:25,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:25,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:13:25,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:25,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 10:13:25,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:25,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 10:13:25,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:25,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:25,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:25,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:25,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 10:13:25,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:13:25,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 499 [2020-09-25 10:13:25,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:25,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:25,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:13:25,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:25,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-25 10:13:25,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:13:25,778 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:13:25,778 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [92907543] [2020-09-25 10:13:25,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:13:25,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 10:13:25,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827474066] [2020-09-25 10:13:25,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 10:13:25,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:13:25,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 10:13:25,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-09-25 10:13:25,783 INFO L87 Difference]: Start difference. First operand 1444 states and 1752 transitions. Second operand 10 states. [2020-09-25 10:13:31,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:13:31,234 INFO L93 Difference]: Finished difference Result 3938 states and 5002 transitions. [2020-09-25 10:13:31,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 10:13:31,236 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 119 [2020-09-25 10:13:31,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:13:31,250 INFO L225 Difference]: With dead ends: 3938 [2020-09-25 10:13:31,250 INFO L226 Difference]: Without dead ends: 2290 [2020-09-25 10:13:31,259 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2020-09-25 10:13:31,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2290 states. [2020-09-25 10:13:31,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2290 to 2247. [2020-09-25 10:13:31,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2247 states. [2020-09-25 10:13:31,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2247 states to 2247 states and 2637 transitions. [2020-09-25 10:13:31,343 INFO L78 Accepts]: Start accepts. Automaton has 2247 states and 2637 transitions. Word has length 119 [2020-09-25 10:13:31,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:13:31,348 INFO L479 AbstractCegarLoop]: Abstraction has 2247 states and 2637 transitions. [2020-09-25 10:13:31,349 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 10:13:31,349 INFO L276 IsEmpty]: Start isEmpty. Operand 2247 states and 2637 transitions. [2020-09-25 10:13:31,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-09-25 10:13:31,356 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:13:31,357 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:13:31,357 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:13:31,357 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:13:31,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:13:31,358 INFO L82 PathProgramCache]: Analyzing trace with hash 598873241, now seen corresponding path program 1 times [2020-09-25 10:13:31,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:13:31,359 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1108935969] [2020-09-25 10:13:31,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:13:31,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:31,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:31,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:31,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:32,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:32,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:33,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:35,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:35,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-09-25 10:13:35,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:13:35,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3956 [2020-09-25 10:13:35,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:35,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:35,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:13:35,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 10:13:35,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-09-25 10:13:35,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:35,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:13:35,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:35,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:35,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:35,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 10:13:35,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:35,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 10:13:35,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:35,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:35,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:13:35,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:35,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:13:35,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:35,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 10:13:35,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:35,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:35,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:35,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:35,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 10:13:35,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:13:35,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-09-25 10:13:35,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:35,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:35,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:13:35,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:13:35,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 10:13:35,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:35,902 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 10:13:35,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1108935969] [2020-09-25 10:13:35,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:13:35,908 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 10:13:35,908 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245587143] [2020-09-25 10:13:35,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 10:13:35,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:13:35,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 10:13:35,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:13:35,915 INFO L87 Difference]: Start difference. First operand 2247 states and 2637 transitions. Second operand 7 states. [2020-09-25 10:13:40,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:13:40,030 INFO L93 Difference]: Finished difference Result 4938 states and 5848 transitions. [2020-09-25 10:13:40,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 10:13:40,031 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 123 [2020-09-25 10:13:40,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:13:40,045 INFO L225 Difference]: With dead ends: 4938 [2020-09-25 10:13:40,046 INFO L226 Difference]: Without dead ends: 2708 [2020-09-25 10:13:40,053 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-09-25 10:13:40,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2708 states. [2020-09-25 10:13:40,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2708 to 2672. [2020-09-25 10:13:40,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2672 states. [2020-09-25 10:13:40,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2672 states to 2672 states and 3128 transitions. [2020-09-25 10:13:40,129 INFO L78 Accepts]: Start accepts. Automaton has 2672 states and 3128 transitions. Word has length 123 [2020-09-25 10:13:40,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:13:40,130 INFO L479 AbstractCegarLoop]: Abstraction has 2672 states and 3128 transitions. [2020-09-25 10:13:40,130 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 10:13:40,131 INFO L276 IsEmpty]: Start isEmpty. Operand 2672 states and 3128 transitions. [2020-09-25 10:13:40,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-09-25 10:13:40,135 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:13:40,135 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:13:40,135 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:13:40,136 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:13:40,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:13:40,136 INFO L82 PathProgramCache]: Analyzing trace with hash 829918, now seen corresponding path program 1 times [2020-09-25 10:13:40,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:13:40,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [383606408] [2020-09-25 10:13:40,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:13:40,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:40,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:40,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:40,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:40,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:41,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:41,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:43,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:43,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:45,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:45,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-09-25 10:13:45,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:13:45,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 10:13:45,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:45,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:45,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:13:45,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 10:13:45,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-09-25 10:13:45,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:45,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:13:45,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:45,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:45,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:45,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 10:13:45,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:45,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 10:13:45,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:45,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:45,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:13:45,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:45,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:13:45,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:45,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 10:13:45,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:45,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:45,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:45,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 10:13:45,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:45,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-09-25 10:13:45,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:45,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:45,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:13:45,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:13:45,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-25 10:13:45,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:45,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-09-25 10:13:45,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:45,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:45,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:45,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 10:13:45,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:45,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 272 [2020-09-25 10:13:45,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:45,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:45,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:13:45,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:13:45,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 10:13:45,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:46,092 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 98 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 10:13:46,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [383606408] [2020-09-25 10:13:46,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:13:46,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 10:13:46,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092185679] [2020-09-25 10:13:46,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 10:13:46,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:13:46,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 10:13:46,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-09-25 10:13:46,096 INFO L87 Difference]: Start difference. First operand 2672 states and 3128 transitions. Second operand 10 states.