/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/Problem10_label37.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:12:13,954 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:12:13,958 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:12:13,999 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:12:14,000 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:12:14,007 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:12:14,009 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:12:14,013 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:12:14,015 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:12:14,018 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:12:14,019 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:12:14,020 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:12:14,021 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:12:14,023 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:12:14,026 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:12:14,028 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:12:14,029 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:12:14,030 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:12:14,032 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:12:14,040 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:12:14,042 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:12:14,043 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:12:14,044 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:12:14,045 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:12:14,059 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:12:14,062 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:12:14,062 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:12:14,063 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:12:14,064 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:12:14,067 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:12:14,067 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:12:14,068 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:12:14,068 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:12:14,072 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:12:14,073 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:12:14,073 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:12:14,074 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:12:14,074 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:12:14,075 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:12:14,078 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:12:14,078 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:12:14,080 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 10:12:14,119 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:12:14,119 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:12:14,121 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:12:14,121 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:12:14,122 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:12:14,122 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:12:14,122 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:12:14,122 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:12:14,123 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:12:14,123 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:12:14,124 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:12:14,124 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:12:14,124 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:12:14,125 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:12:14,125 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:12:14,125 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:12:14,125 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:12:14,125 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:12:14,126 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:12:14,126 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:12:14,126 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:12:14,126 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:12:14,127 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:12:14,127 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:12:14,127 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:12:14,127 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:12:14,128 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:12:14,128 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:12:14,128 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:12:14,128 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 10:12:14,561 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:12:14,578 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:12:14,582 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:12:14,584 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:12:14,584 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:12:14,585 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label37.c [2020-09-25 10:12:14,676 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/305cced56/4e4095126fc44f4e846d5f2b1400fe7b/FLAG5676abbce [2020-09-25 10:12:15,332 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:12:15,333 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label37.c [2020-09-25 10:12:15,360 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/305cced56/4e4095126fc44f4e846d5f2b1400fe7b/FLAG5676abbce [2020-09-25 10:12:15,535 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/305cced56/4e4095126fc44f4e846d5f2b1400fe7b [2020-09-25 10:12:15,550 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:12:15,556 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:12:15,559 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:12:15,559 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:12:15,563 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:12:15,564 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:12:15" (1/1) ... [2020-09-25 10:12:15,569 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42dfe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:15, skipping insertion in model container [2020-09-25 10:12:15,570 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:12:15" (1/1) ... [2020-09-25 10:12:15,579 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:12:15,650 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:12:16,094 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:12:16,100 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:12:16,326 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:12:16,345 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:12:16,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:16 WrapperNode [2020-09-25 10:12:16,346 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:12:16,347 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:12:16,347 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:12:16,347 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:12:16,361 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:16" (1/1) ... [2020-09-25 10:12:16,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:16" (1/1) ... [2020-09-25 10:12:16,381 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:16" (1/1) ... [2020-09-25 10:12:16,382 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:16" (1/1) ... [2020-09-25 10:12:16,421 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:16" (1/1) ... [2020-09-25 10:12:16,439 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:16" (1/1) ... [2020-09-25 10:12:16,445 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:16" (1/1) ... [2020-09-25 10:12:16,455 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:12:16,455 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:12:16,456 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:12:16,456 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:12:16,457 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:16" (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 10:12:16,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:12:16,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:12:16,568 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:12:16,568 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:12:16,569 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:12:16,569 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:12:16,569 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:12:16,570 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:12:16,570 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:12:16,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:12:16,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:12:17,981 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:12:17,982 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:12:17,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:12:17 BoogieIcfgContainer [2020-09-25 10:12:17,991 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:12:17,992 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:12:17,992 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:12:17,996 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:12:17,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:12:15" (1/3) ... [2020-09-25 10:12:17,997 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e40405c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:12:17, skipping insertion in model container [2020-09-25 10:12:17,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:16" (2/3) ... [2020-09-25 10:12:17,998 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e40405c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:12:17, skipping insertion in model container [2020-09-25 10:12:17,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:12:17" (3/3) ... [2020-09-25 10:12:18,001 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label37.c [2020-09-25 10:12:18,015 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:12:18,027 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:12:18,053 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:12:18,088 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:12:18,088 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:12:18,088 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:12:18,088 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:12:18,089 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:12:18,089 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:12:18,089 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:12:18,089 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:12:18,119 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 10:12:18,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 10:12:18,131 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:12:18,132 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] [2020-09-25 10:12:18,133 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:12:18,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:12:18,141 INFO L82 PathProgramCache]: Analyzing trace with hash 813911311, now seen corresponding path program 1 times [2020-09-25 10:12:18,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:12:18,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1001699951] [2020-09-25 10:12:18,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:12:18,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:18,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:18,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:18,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:19,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:19,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 10:12:19,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:12:19,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1214 [2020-09-25 10:12:19,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:19,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:19,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:12:19,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 10:12:19,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 10:12:19,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 10:12:19,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:12:19,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:19,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:19,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:19,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:12:19,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:19,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 10:12:19,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:19,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:19,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:12:19,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:19,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:12:19,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:19,773 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 10:12:19,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1001699951] [2020-09-25 10:12:19,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:12:19,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 10:12:19,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69597261] [2020-09-25 10:12:19,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 10:12:19,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:12:19,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 10:12:19,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:12:19,805 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-09-25 10:12:22,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:12:22,351 INFO L93 Difference]: Finished difference Result 1226 states and 1798 transitions. [2020-09-25 10:12:22,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 10:12:22,354 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2020-09-25 10:12:22,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:12:22,380 INFO L225 Difference]: With dead ends: 1226 [2020-09-25 10:12:22,380 INFO L226 Difference]: Without dead ends: 707 [2020-09-25 10:12:22,391 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 10:12:22,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2020-09-25 10:12:22,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 695. [2020-09-25 10:12:22,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-25 10:12:22,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 902 transitions. [2020-09-25 10:12:22,499 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 902 transitions. Word has length 73 [2020-09-25 10:12:22,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:12:22,500 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 902 transitions. [2020-09-25 10:12:22,500 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 10:12:22,500 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 902 transitions. [2020-09-25 10:12:22,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-09-25 10:12:22,511 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:12:22,511 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 10:12:22,512 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:12:22,512 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:12:22,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:12:22,512 INFO L82 PathProgramCache]: Analyzing trace with hash -1429790590, now seen corresponding path program 1 times [2020-09-25 10:12:22,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:12:22,513 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1003856560] [2020-09-25 10:12:22,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:12:22,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:22,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:22,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:22,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:23,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:24,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:24,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:24,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:25,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:27,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:27,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 10:12:27,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:12:27,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 10:12:27,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:27,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:27,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:12:27,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:12:27,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-09-25 10:12:27,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:27,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:12:27,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:27,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:27,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:27,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:12:27,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:27,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 10:12:27,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:27,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:27,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:12:27,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:27,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:12:27,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:27,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:12:27,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:27,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:27,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:27,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 10:12:27,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:27,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-09-25 10:12:27,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:27,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:27,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:12:27,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:12:27,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 10:12:27,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:28,044 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 7 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:12:28,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1003856560] [2020-09-25 10:12:28,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:12:28,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 10:12:28,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802568100] [2020-09-25 10:12:28,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 10:12:28,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:12:28,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 10:12:28,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:12:28,049 INFO L87 Difference]: Start difference. First operand 695 states and 902 transitions. Second operand 8 states. [2020-09-25 10:12:31,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:12:31,109 INFO L93 Difference]: Finished difference Result 2492 states and 3498 transitions. [2020-09-25 10:12:31,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 10:12:31,111 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 162 [2020-09-25 10:12:31,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:12:31,133 INFO L225 Difference]: With dead ends: 2492 [2020-09-25 10:12:31,133 INFO L226 Difference]: Without dead ends: 1812 [2020-09-25 10:12:31,139 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-25 10:12:31,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1812 states. [2020-09-25 10:12:31,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1812 to 1517. [2020-09-25 10:12:31,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1517 states. [2020-09-25 10:12:31,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1517 states to 1517 states and 2050 transitions. [2020-09-25 10:12:31,251 INFO L78 Accepts]: Start accepts. Automaton has 1517 states and 2050 transitions. Word has length 162 [2020-09-25 10:12:31,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:12:31,254 INFO L479 AbstractCegarLoop]: Abstraction has 1517 states and 2050 transitions. [2020-09-25 10:12:31,254 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 10:12:31,254 INFO L276 IsEmpty]: Start isEmpty. Operand 1517 states and 2050 transitions. [2020-09-25 10:12:31,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 10:12:31,264 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:12:31,265 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 10:12:31,265 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:12:31,265 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:12:31,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:12:31,266 INFO L82 PathProgramCache]: Analyzing trace with hash -594506206, now seen corresponding path program 1 times [2020-09-25 10:12:31,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:12:31,266 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2021621793] [2020-09-25 10:12:31,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:12:31,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:31,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:31,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:32,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:32,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:34,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:34,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:36,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:36,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 10:12:36,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:12:36,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 10:12:36,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:36,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:36,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:12:36,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:12:36,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-09-25 10:12:36,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 10:12:36,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:12:36,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:36,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:36,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:36,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:12:36,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:36,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 10:12:36,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:36,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:36,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:12:36,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:36,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:12:36,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:12:36,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:12:36,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:36,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:36,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:36,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:36,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 10:12:36,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:12:36,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 398 [2020-09-25 10:12:36,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:36,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:36,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:12:36,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:36,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-25 10:12:36,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:12:37,139 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:12:37,139 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2021621793] [2020-09-25 10:12:37,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:12:37,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 10:12:37,140 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592317990] [2020-09-25 10:12:37,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 10:12:37,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:12:37,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 10:12:37,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-09-25 10:12:37,145 INFO L87 Difference]: Start difference. First operand 1517 states and 2050 transitions. Second operand 9 states. [2020-09-25 10:12:40,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:12:40,571 INFO L93 Difference]: Finished difference Result 3700 states and 5182 transitions. [2020-09-25 10:12:40,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 10:12:40,573 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 165 [2020-09-25 10:12:40,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:12:40,588 INFO L225 Difference]: With dead ends: 3700 [2020-09-25 10:12:40,589 INFO L226 Difference]: Without dead ends: 2172 [2020-09-25 10:12:40,597 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2020-09-25 10:12:40,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2172 states. [2020-09-25 10:12:40,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2172 to 1975. [2020-09-25 10:12:40,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1975 states. [2020-09-25 10:12:40,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1975 states to 1975 states and 2613 transitions. [2020-09-25 10:12:40,677 INFO L78 Accepts]: Start accepts. Automaton has 1975 states and 2613 transitions. Word has length 165 [2020-09-25 10:12:40,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:12:40,678 INFO L479 AbstractCegarLoop]: Abstraction has 1975 states and 2613 transitions. [2020-09-25 10:12:40,678 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 10:12:40,679 INFO L276 IsEmpty]: Start isEmpty. Operand 1975 states and 2613 transitions. [2020-09-25 10:12:40,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-09-25 10:12:40,682 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:12:40,683 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 10:12:40,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:12:40,683 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:12:40,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:12:40,683 INFO L82 PathProgramCache]: Analyzing trace with hash 2068079432, now seen corresponding path program 1 times [2020-09-25 10:12:40,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:12:40,684 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1219312731] [2020-09-25 10:12:40,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:12:40,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:40,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:40,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:41,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:41,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:41,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:42,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:42,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:43,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:43,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:43,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:45,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:45,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-09-25 10:12:45,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 10:12:45,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4377 [2020-09-25 10:12:45,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:45,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:45,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:12:45,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:12:45,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-09-25 10:12:45,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:45,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:12:45,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:45,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:45,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:45,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:12:45,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:45,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 10:12:45,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:45,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:45,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:12:45,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:45,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:12:45,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:45,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:12:45,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:45,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:45,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:45,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:45,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-25 10:12:45,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:12:45,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 311 [2020-09-25 10:12:45,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:45,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:45,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:12:45,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:12:45,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 10:12:45,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:45,695 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 10:12:45,697 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1219312731] [2020-09-25 10:12:45,698 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:12:45,698 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 10:12:45,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876904129] [2020-09-25 10:12:45,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 10:12:45,699 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:12:45,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 10:12:45,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:12:45,705 INFO L87 Difference]: Start difference. First operand 1975 states and 2613 transitions. Second operand 7 states. [2020-09-25 10:12:48,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:12:48,036 INFO L93 Difference]: Finished difference Result 5141 states and 7010 transitions. [2020-09-25 10:12:48,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 10:12:48,037 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 171 [2020-09-25 10:12:48,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:12:48,063 INFO L225 Difference]: With dead ends: 5141 [2020-09-25 10:12:48,064 INFO L226 Difference]: Without dead ends: 3181 [2020-09-25 10:12:48,075 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 10:12:48,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3181 states. [2020-09-25 10:12:48,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3181 to 2939. [2020-09-25 10:12:48,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2939 states. [2020-09-25 10:12:48,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2939 states to 2939 states and 3913 transitions. [2020-09-25 10:12:48,213 INFO L78 Accepts]: Start accepts. Automaton has 2939 states and 3913 transitions. Word has length 171 [2020-09-25 10:12:48,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:12:48,213 INFO L479 AbstractCegarLoop]: Abstraction has 2939 states and 3913 transitions. [2020-09-25 10:12:48,214 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 10:12:48,214 INFO L276 IsEmpty]: Start isEmpty. Operand 2939 states and 3913 transitions. [2020-09-25 10:12:48,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-25 10:12:48,218 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:12:48,218 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 10:12:48,219 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:12:48,219 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:12:48,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:12:48,219 INFO L82 PathProgramCache]: Analyzing trace with hash -1651977394, now seen corresponding path program 1 times [2020-09-25 10:12:48,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:12:48,220 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [534796177] [2020-09-25 10:12:48,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:12:48,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:48,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:48,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:48,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:49,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:51,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:53,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:53,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-09-25 10:12:53,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:12:53,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 10:12:53,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:53,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:53,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:12:53,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:12:53,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-09-25 10:12:53,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:53,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:12:53,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:53,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:53,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:53,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:12:53,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:53,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 10:12:53,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:53,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:53,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:12:53,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:53,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:12:53,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 10:12:53,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:12:53,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:53,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:53,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:53,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:53,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 10:12:53,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:12:53,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 376 [2020-09-25 10:12:53,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:53,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:53,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:12:53,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:53,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-25 10:12:53,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:12:53,943 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:12:53,943 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [534796177] [2020-09-25 10:12:53,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:12:53,944 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 10:12:53,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382601632] [2020-09-25 10:12:53,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 10:12:53,945 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:12:53,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 10:12:53,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:12:53,945 INFO L87 Difference]: Start difference. First operand 2939 states and 3913 transitions. Second operand 11 states. [2020-09-25 10:12:57,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:12:57,392 INFO L93 Difference]: Finished difference Result 6898 states and 9384 transitions. [2020-09-25 10:12:57,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 10:12:57,393 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 181 [2020-09-25 10:12:57,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:12:57,415 INFO L225 Difference]: With dead ends: 6898 [2020-09-25 10:12:57,415 INFO L226 Difference]: Without dead ends: 4077 [2020-09-25 10:12:57,426 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=110, Invalid=196, Unknown=0, NotChecked=0, Total=306 [2020-09-25 10:12:57,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4077 states. [2020-09-25 10:12:57,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4077 to 3885. [2020-09-25 10:12:57,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3885 states. [2020-09-25 10:12:57,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3885 states to 3885 states and 5207 transitions. [2020-09-25 10:12:57,532 INFO L78 Accepts]: Start accepts. Automaton has 3885 states and 5207 transitions. Word has length 181 [2020-09-25 10:12:57,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:12:57,532 INFO L479 AbstractCegarLoop]: Abstraction has 3885 states and 5207 transitions. [2020-09-25 10:12:57,532 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 10:12:57,532 INFO L276 IsEmpty]: Start isEmpty. Operand 3885 states and 5207 transitions. [2020-09-25 10:12:57,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-09-25 10:12:57,539 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:12:57,539 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 10:12:57,539 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:12:57,540 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:12:57,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:12:57,540 INFO L82 PathProgramCache]: Analyzing trace with hash 460060478, now seen corresponding path program 1 times [2020-09-25 10:12:57,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:12:57,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1621938603] [2020-09-25 10:12:57,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:12:57,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:57,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:57,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:57,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:00,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:00,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:00,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:01,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:01,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:02,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:02,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-09-25 10:13:02,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:13:02,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 10:13:02,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:02,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:02,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 10:13:02,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:13:02,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-09-25 10:13:02,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:03,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:13:03,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:03,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:03,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:03,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:13:03,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:03,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 10:13:03,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:03,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:03,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:13:03,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:03,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:13:03,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0