/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=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label07.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:30:48,951 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:30:48,957 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:30:49,010 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:30:49,010 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:30:49,020 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:30:49,022 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:30:49,024 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:30:49,025 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:30:49,026 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:30:49,027 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:30:49,029 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:30:49,029 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:30:49,030 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:30:49,031 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:30:49,033 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:30:49,034 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:30:49,035 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:30:49,036 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:30:49,038 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:30:49,040 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:30:49,041 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:30:49,042 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:30:49,043 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:30:49,046 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:30:49,046 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:30:49,046 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:30:49,048 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:30:49,048 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:30:49,049 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:30:49,049 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:30:49,050 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:30:49,051 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:30:49,052 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:30:49,053 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:30:49,053 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:30:49,054 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:30:49,055 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:30:49,055 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:30:49,056 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:30:49,057 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:30:49,057 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 13:30:49,083 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:30:49,083 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:30:49,085 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:30:49,085 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:30:49,085 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:30:49,085 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:30:49,085 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:30:49,086 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:30:49,086 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:30:49,086 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:30:49,086 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:30:49,086 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:30:49,087 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:30:49,087 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:30:49,087 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:30:49,087 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:30:49,087 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:30:49,088 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:30:49,088 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:30:49,088 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:30:49,088 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:30:49,088 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:30:49,089 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:30:49,089 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:30:49,089 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:30:49,089 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:30:49,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:30:49,090 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:30:49,090 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:30:49,090 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=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-09-25 13:30:49,554 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:30:49,578 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:30:49,583 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:30:49,587 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:30:49,587 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:30:49,588 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label07.c [2020-09-25 13:30:49,669 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/75e9cec77/30292bb08fd94129b82c5b20e058bdb0/FLAG9b5630b69 [2020-09-25 13:30:50,273 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:30:50,283 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label07.c [2020-09-25 13:30:50,299 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/75e9cec77/30292bb08fd94129b82c5b20e058bdb0/FLAG9b5630b69 [2020-09-25 13:30:50,535 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/75e9cec77/30292bb08fd94129b82c5b20e058bdb0 [2020-09-25 13:30:50,550 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:30:50,556 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:30:50,558 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:30:50,558 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:30:50,563 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:30:50,564 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:30:50" (1/1) ... [2020-09-25 13:30:50,569 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@194bd3d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:50, skipping insertion in model container [2020-09-25 13:30:50,569 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:30:50" (1/1) ... [2020-09-25 13:30:50,579 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:30:50,637 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:30:51,156 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:30:51,163 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:30:51,393 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:30:51,413 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:30:51,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:51 WrapperNode [2020-09-25 13:30:51,414 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:30:51,415 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:30:51,415 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:30:51,415 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:30:51,440 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:51" (1/1) ... [2020-09-25 13:30:51,440 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:51" (1/1) ... [2020-09-25 13:30:51,463 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:51" (1/1) ... [2020-09-25 13:30:51,463 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:51" (1/1) ... [2020-09-25 13:30:51,502 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:51" (1/1) ... [2020-09-25 13:30:51,520 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:51" (1/1) ... [2020-09-25 13:30:51,525 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:51" (1/1) ... [2020-09-25 13:30:51,534 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:30:51,534 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:30:51,535 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:30:51,538 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:30:51,539 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:51" (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 13:30:51,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:30:51,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:30:51,622 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:30:51,623 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:30:51,623 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:30:51,623 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:30:51,623 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:30:51,623 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:30:51,624 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:30:51,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:30:51,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:30:52,989 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:30:52,989 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:30:52,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:30:52 BoogieIcfgContainer [2020-09-25 13:30:52,999 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:30:53,001 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:30:53,001 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:30:53,005 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:30:53,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:30:50" (1/3) ... [2020-09-25 13:30:53,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a66a94e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:30:53, skipping insertion in model container [2020-09-25 13:30:53,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:51" (2/3) ... [2020-09-25 13:30:53,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a66a94e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:30:53, skipping insertion in model container [2020-09-25 13:30:53,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:30:52" (3/3) ... [2020-09-25 13:30:53,010 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label07.c [2020-09-25 13:30:53,023 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:30:53,035 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:30:53,059 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:30:53,099 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:30:53,101 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:30:53,101 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:30:53,101 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:30:53,101 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:30:53,101 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:30:53,101 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:30:53,102 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:30:53,145 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 13:30:53,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 13:30:53,190 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:30:53,193 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:30:53,194 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:30:53,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:30:53,201 INFO L82 PathProgramCache]: Analyzing trace with hash 228287402, now seen corresponding path program 1 times [2020-09-25 13:30:53,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:30:53,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [840094341] [2020-09-25 13:30:53,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:30:53,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:53,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:53,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:54,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:55,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:55,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:57,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:58,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:58,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:58,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-25 13:30:58,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:30:58,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 13:30:58,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:58,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:58,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:30:58,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 13:30:58,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-09-25 13:30:58,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:30:58,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:30:58,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:58,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:58,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:58,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:30:58,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:58,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 13:30:58,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:58,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:58,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:30:58,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:58,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 13:30:58,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:58,925 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 13:30:58,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [840094341] [2020-09-25 13:30:58,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:30:58,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 13:30:58,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636234948] [2020-09-25 13:30:58,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:30:58,937 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:30:58,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:30:58,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:30:58,960 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 5 states. [2020-09-25 13:31:02,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:31:02,174 INFO L93 Difference]: Finished difference Result 1420 states and 2015 transitions. [2020-09-25 13:31:02,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 13:31:02,177 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 165 [2020-09-25 13:31:02,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:31:02,205 INFO L225 Difference]: With dead ends: 1420 [2020-09-25 13:31:02,205 INFO L226 Difference]: Without dead ends: 837 [2020-09-25 13:31:02,215 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:31:02,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 837 states. [2020-09-25 13:31:02,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 837 to 774. [2020-09-25 13:31:02,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 774 states. [2020-09-25 13:31:02,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 774 states to 774 states and 946 transitions. [2020-09-25 13:31:02,336 INFO L78 Accepts]: Start accepts. Automaton has 774 states and 946 transitions. Word has length 165 [2020-09-25 13:31:02,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:31:02,337 INFO L479 AbstractCegarLoop]: Abstraction has 774 states and 946 transitions. [2020-09-25 13:31:02,337 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:31:02,337 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states and 946 transitions. [2020-09-25 13:31:02,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-09-25 13:31:02,344 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:31:02,345 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:31:02,345 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:31:02,346 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:31:02,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:31:02,346 INFO L82 PathProgramCache]: Analyzing trace with hash 938728200, now seen corresponding path program 1 times [2020-09-25 13:31:02,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:31:02,347 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2144468503] [2020-09-25 13:31:02,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:31:02,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:02,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:02,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:02,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:03,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:04,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:06,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:06,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:07,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:07,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-09-25 13:31:07,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:31:07,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-09-25 13:31:07,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:07,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:07,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:31:07,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 13:31:07,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-09-25 13:31:07,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 13:31:07,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:31:07,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:07,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:07,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:07,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:31:07,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:31:07,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 13:31:07,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:07,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:07,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:31:07,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:31:07,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:31:07,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 13:31:07,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:31:07,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:07,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:07,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:07,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:31:07,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:31:07,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 13:31:07,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:07,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:07,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:31:07,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:31:07,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:31:07,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:31:07,771 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:31:07,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2144468503] [2020-09-25 13:31:07,772 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:31:07,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:31:07,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45093360] [2020-09-25 13:31:07,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:31:07,776 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:31:07,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:31:07,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:31:07,777 INFO L87 Difference]: Start difference. First operand 774 states and 946 transitions. Second operand 5 states. [2020-09-25 13:31:09,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:31:09,780 INFO L93 Difference]: Finished difference Result 1990 states and 2530 transitions. [2020-09-25 13:31:09,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:31:09,784 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 187 [2020-09-25 13:31:09,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:31:09,795 INFO L225 Difference]: With dead ends: 1990 [2020-09-25 13:31:09,795 INFO L226 Difference]: Without dead ends: 1238 [2020-09-25 13:31:09,799 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 13:31:09,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1238 states. [2020-09-25 13:31:09,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1238 to 1228. [2020-09-25 13:31:09,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1228 states. [2020-09-25 13:31:09,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1228 states to 1228 states and 1542 transitions. [2020-09-25 13:31:09,854 INFO L78 Accepts]: Start accepts. Automaton has 1228 states and 1542 transitions. Word has length 187 [2020-09-25 13:31:09,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:31:09,855 INFO L479 AbstractCegarLoop]: Abstraction has 1228 states and 1542 transitions. [2020-09-25 13:31:09,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:31:09,855 INFO L276 IsEmpty]: Start isEmpty. Operand 1228 states and 1542 transitions. [2020-09-25 13:31:09,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-09-25 13:31:09,863 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:31:09,863 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:31:09,863 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:31:09,864 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:31:09,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:31:09,864 INFO L82 PathProgramCache]: Analyzing trace with hash 817937001, now seen corresponding path program 1 times [2020-09-25 13:31:09,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:31:09,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [844830928] [2020-09-25 13:31:09,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:31:09,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:09,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:10,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:10,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:10,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:11,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:14,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:14,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-09-25 13:31:14,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:31:14,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 13:31:14,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:14,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:14,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:31:14,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-09-25 13:31:14,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-09-25 13:31:14,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:31:15,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:31:15,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:15,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:15,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:15,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:31:15,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:31:15,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 13:31:15,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:15,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:15,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:31:15,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:31:15,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:31:15,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:31:15,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:31:15,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:15,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:15,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:15,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 13:31:15,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:31:15,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 13:31:15,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:15,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:15,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:31:15,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:31:15,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:31:15,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:31:15,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 13:31:15,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:15,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:15,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:15,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 13:31:15,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:31:15,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-09-25 13:31:15,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:15,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:15,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:31:15,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:31:15,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 13:31:15,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:31:15,991 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 46 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-25 13:31:15,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [844830928] [2020-09-25 13:31:15,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:31:15,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 13:31:15,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599729319] [2020-09-25 13:31:16,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 13:31:16,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:31:16,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 13:31:16,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:31:16,003 INFO L87 Difference]: Start difference. First operand 1228 states and 1542 transitions. Second operand 9 states. [2020-09-25 13:31:20,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:31:20,465 INFO L93 Difference]: Finished difference Result 3304 states and 4293 transitions. [2020-09-25 13:31:20,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 13:31:20,466 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 229 [2020-09-25 13:31:20,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:31:20,481 INFO L225 Difference]: With dead ends: 3304 [2020-09-25 13:31:20,481 INFO L226 Difference]: Without dead ends: 1990 [2020-09-25 13:31:20,488 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2020-09-25 13:31:20,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1990 states. [2020-09-25 13:31:20,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1990 to 1980. [2020-09-25 13:31:20,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1980 states. [2020-09-25 13:31:20,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1980 states to 1980 states and 2337 transitions. [2020-09-25 13:31:20,562 INFO L78 Accepts]: Start accepts. Automaton has 1980 states and 2337 transitions. Word has length 229 [2020-09-25 13:31:20,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:31:20,563 INFO L479 AbstractCegarLoop]: Abstraction has 1980 states and 2337 transitions. [2020-09-25 13:31:20,563 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 13:31:20,563 INFO L276 IsEmpty]: Start isEmpty. Operand 1980 states and 2337 transitions. [2020-09-25 13:31:20,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2020-09-25 13:31:20,574 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:31:20,575 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:31:20,575 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:31:20,575 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:31:20,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:31:20,576 INFO L82 PathProgramCache]: Analyzing trace with hash 865061289, now seen corresponding path program 1 times [2020-09-25 13:31:20,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:31:20,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1398634919] [2020-09-25 13:31:20,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:31:20,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:20,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:20,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:21,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:21,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:22,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:22,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:22,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:23,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:23,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:23,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:25,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:25,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 321 [2020-09-25 13:31:25,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 13:31:25,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-09-25 13:31:25,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:25,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:25,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:31:25,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-09-25 13:31:25,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 238 [2020-09-25 13:31:25,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:31:25,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:31:25,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:25,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:25,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:25,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:31:25,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:31:25,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 13:31:25,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:25,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:25,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:31:25,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:31:25,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:31:25,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:31:25,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:31:25,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:25,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:25,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:25,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:31:25,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:31:25,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:31:25,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:25,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:25,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:31:25,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:31:25,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:31:25,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:31:25,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 13:31:25,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:25,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:25,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:25,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 13:31:25,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:31:25,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 13:31:25,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:25,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:25,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:31:25,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:31:25,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 13:31:25,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:31:25,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-25 13:31:25,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:25,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:26,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:26,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:26,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 13:31:26,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:31:26,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-09-25 13:31:26,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:26,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:26,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:31:26,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:31:26,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-25 13:31:26,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:31:26,411 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 148 proven. 5 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-25 13:31:26,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1398634919] [2020-09-25 13:31:26,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:31:26,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 13:31:26,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831006350] [2020-09-25 13:31:26,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:31:26,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:31:26,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:31:26,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:31:26,414 INFO L87 Difference]: Start difference. First operand 1980 states and 2337 transitions. Second operand 7 states. [2020-09-25 13:31:29,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:31:29,149 INFO L93 Difference]: Finished difference Result 4914 states and 6210 transitions. [2020-09-25 13:31:29,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 13:31:29,150 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 306 [2020-09-25 13:31:29,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:31:29,170 INFO L225 Difference]: With dead ends: 4914 [2020-09-25 13:31:29,170 INFO L226 Difference]: Without dead ends: 2956 [2020-09-25 13:31:29,178 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 13:31:29,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2956 states. [2020-09-25 13:31:29,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2956 to 2332. [2020-09-25 13:31:29,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2332 states. [2020-09-25 13:31:29,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2332 states to 2332 states and 2741 transitions. [2020-09-25 13:31:29,262 INFO L78 Accepts]: Start accepts. Automaton has 2332 states and 2741 transitions. Word has length 306 [2020-09-25 13:31:29,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:31:29,262 INFO L479 AbstractCegarLoop]: Abstraction has 2332 states and 2741 transitions. [2020-09-25 13:31:29,263 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:31:29,263 INFO L276 IsEmpty]: Start isEmpty. Operand 2332 states and 2741 transitions. [2020-09-25 13:31:29,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2020-09-25 13:31:29,274 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:31:29,275 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:31:29,275 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:31:29,275 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:31:29,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:31:29,275 INFO L82 PathProgramCache]: Analyzing trace with hash -93889228, now seen corresponding path program 1 times [2020-09-25 13:31:29,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:31:29,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [47499979] [2020-09-25 13:31:29,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:31:29,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:29,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:29,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:29,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:29,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:30,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:30,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:34,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:34,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 334 [2020-09-25 13:31:34,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:31:34,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 13:31:34,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:34,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:34,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:31:34,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-09-25 13:31:34,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 13:31:34,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:31:34,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:31:34,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:34,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:34,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:34,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:31:34,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:31:34,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 13:31:34,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:34,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:34,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:31:34,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:31:34,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:31:34,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:31:34,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:31:34,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:34,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:34,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:34,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:31:34,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:31:34,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 13:31:34,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:34,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:34,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:31:34,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:31:34,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:31:34,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:31:34,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-25 13:31:34,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:34,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:34,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:34,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 13:31:34,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:31:34,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 13:31:34,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:34,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:34,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:31:34,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:31:34,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 13:31:34,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:31:34,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-25 13:31:34,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:34,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:34,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:34,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:34,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 13:31:34,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:31:34,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 268 [2020-09-25 13:31:34,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:34,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:34,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:31:34,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:31:34,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-25 13:31:34,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:31:35,012 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 189 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-09-25 13:31:35,012 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [47499979] [2020-09-25 13:31:35,015 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:31:35,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 13:31:35,017 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861843843] [2020-09-25 13:31:35,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:31:35,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:31:35,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:31:35,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:31:35,026 INFO L87 Difference]: Start difference. First operand 2332 states and 2741 transitions. Second operand 7 states. [2020-09-25 13:31:38,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:31:38,534 INFO L93 Difference]: Finished difference Result 6272 states and 7788 transitions. [2020-09-25 13:31:38,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 13:31:38,535 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 319 [2020-09-25 13:31:38,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:31:38,556 INFO L225 Difference]: With dead ends: 6272 [2020-09-25 13:31:38,557 INFO L226 Difference]: Without dead ends: 3962 [2020-09-25 13:31:38,565 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:31:38,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3962 states. [2020-09-25 13:31:38,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3962 to 3719. [2020-09-25 13:31:38,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3719 states. [2020-09-25 13:31:38,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3719 states to 3719 states and 4362 transitions. [2020-09-25 13:31:38,674 INFO L78 Accepts]: Start accepts. Automaton has 3719 states and 4362 transitions. Word has length 319 [2020-09-25 13:31:38,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:31:38,675 INFO L479 AbstractCegarLoop]: Abstraction has 3719 states and 4362 transitions. [2020-09-25 13:31:38,675 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:31:38,675 INFO L276 IsEmpty]: Start isEmpty. Operand 3719 states and 4362 transitions. [2020-09-25 13:31:38,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2020-09-25 13:31:38,694 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:31:38,694 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 13:31:38,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:31:38,695 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:31:38,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:31:38,695 INFO L82 PathProgramCache]: Analyzing trace with hash 1492351980, now seen corresponding path program 1 times [2020-09-25 13:31:38,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:31:38,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1310382724] [2020-09-25 13:31:38,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:31:38,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:38,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:38,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:39,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking...