/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 SequenceOfStatements --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=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label17.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 22:27:32,964 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 22:27:32,967 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 22:27:33,012 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 22:27:33,013 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 22:27:33,014 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 22:27:33,016 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 22:27:33,018 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 22:27:33,020 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 22:27:33,021 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 22:27:33,022 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 22:27:33,024 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 22:27:33,024 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 22:27:33,025 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 22:27:33,026 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 22:27:33,027 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 22:27:33,028 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 22:27:33,029 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 22:27:33,031 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 22:27:33,033 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 22:27:33,035 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 22:27:33,036 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 22:27:33,037 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 22:27:33,038 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 22:27:33,040 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 22:27:33,041 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 22:27:33,041 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 22:27:33,042 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 22:27:33,042 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 22:27:33,043 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 22:27:33,044 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 22:27:33,045 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 22:27:33,045 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 22:27:33,046 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 22:27:33,047 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 22:27:33,048 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 22:27:33,048 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 22:27:33,048 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 22:27:33,049 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 22:27:33,050 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 22:27:33,051 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 22:27:33,052 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 [2020-10-14 22:27:33,076 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 22:27:33,076 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 22:27:33,078 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 22:27:33,078 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 22:27:33,078 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 22:27:33,079 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 22:27:33,079 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 22:27:33,079 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 22:27:33,079 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 22:27:33,079 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 22:27:33,079 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 22:27:33,080 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 22:27:33,080 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 22:27:33,080 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 22:27:33,080 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 22:27:33,080 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 22:27:33,081 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 22:27:33,081 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 22:27:33,081 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 22:27:33,081 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 22:27:33,081 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 22:27:33,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 22:27:33,082 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 22:27:33,082 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 22:27:33,082 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 22:27:33,082 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 22:27:33,083 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 22:27:33,083 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 22:27:33,083 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 22:27:33,083 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 -> SequenceOfStatements 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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 22:27:33,401 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 22:27:33,415 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 22:27:33,419 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 22:27:33,420 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 22:27:33,421 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 22:27:33,422 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label17.c [2020-10-14 22:27:33,492 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a23ccde25/b6b1fa93ed01462eb38d79bd99606a2d/FLAGa844e6ee0 [2020-10-14 22:27:34,394 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 22:27:34,395 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label17.c [2020-10-14 22:27:34,428 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a23ccde25/b6b1fa93ed01462eb38d79bd99606a2d/FLAGa844e6ee0 [2020-10-14 22:27:34,892 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a23ccde25/b6b1fa93ed01462eb38d79bd99606a2d [2020-10-14 22:27:34,902 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 22:27:34,904 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 22:27:34,909 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 22:27:34,909 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 22:27:34,913 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 22:27:34,915 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:27:34" (1/1) ... [2020-10-14 22:27:34,919 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dccfc7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:27:34, skipping insertion in model container [2020-10-14 22:27:34,919 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:27:34" (1/1) ... [2020-10-14 22:27:34,931 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 22:27:35,080 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 22:27:36,386 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:27:36,398 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 22:27:37,004 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:27:37,035 INFO L208 MainTranslator]: Completed translation [2020-10-14 22:27:37,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:27:37 WrapperNode [2020-10-14 22:27:37,035 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 22:27:37,036 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 22:27:37,037 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 22:27:37,037 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 22:27:37,056 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:27:37" (1/1) ... [2020-10-14 22:27:37,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:27:37" (1/1) ... [2020-10-14 22:27:37,138 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:27:37" (1/1) ... [2020-10-14 22:27:37,139 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:27:37" (1/1) ... [2020-10-14 22:27:37,249 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:27:37" (1/1) ... [2020-10-14 22:27:37,286 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:27:37" (1/1) ... [2020-10-14 22:27:37,310 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:27:37" (1/1) ... [2020-10-14 22:27:37,340 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 22:27:37,340 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 22:27:37,341 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 22:27:37,341 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 22:27:37,343 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:27:37" (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 [2020-10-14 22:27:37,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 22:27:37,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 22:27:37,439 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 22:27:37,439 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 22:27:37,440 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 22:27:37,440 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 22:27:37,440 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 22:27:37,440 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 22:27:37,440 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 22:27:37,441 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 22:27:37,441 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 22:27:37,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 22:27:37,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 22:27:45,088 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 22:27:45,089 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 22:27:45,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:27:45 BoogieIcfgContainer [2020-10-14 22:27:45,108 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 22:27:45,110 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 22:27:45,111 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 22:27:45,116 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 22:27:45,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:27:34" (1/3) ... [2020-10-14 22:27:45,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@98c6fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:27:45, skipping insertion in model container [2020-10-14 22:27:45,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:27:37" (2/3) ... [2020-10-14 22:27:45,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@98c6fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:27:45, skipping insertion in model container [2020-10-14 22:27:45,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:27:45" (3/3) ... [2020-10-14 22:27:45,123 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label17.c [2020-10-14 22:27:45,137 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 22:27:45,153 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 22:27:45,176 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 22:27:45,230 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 22:27:45,230 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 22:27:45,230 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 22:27:45,230 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 22:27:45,231 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 22:27:45,231 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 22:27:45,231 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 22:27:45,231 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 22:27:45,289 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-14 22:27:45,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 22:27:45,303 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:27:45,306 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] [2020-10-14 22:27:45,307 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:27:45,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:27:45,317 INFO L82 PathProgramCache]: Analyzing trace with hash 14902641, now seen corresponding path program 1 times [2020-10-14 22:27:45,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:27:45,333 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [233081348] [2020-10-14 22:27:45,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:27:45,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:27:45,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:46,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:27:46,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 22:27:46,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:27:46,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 564 [2020-10-14 22:27:46,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:27:46,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:27:46,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:27:46,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:27:46,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 22:27:46,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 22:27:46,448 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2020-10-14 22:27:46,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:27:46,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:27:46,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:46,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:27:46,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:27:46,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:27:46,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 22:27:46,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:27:46,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:27:46,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:27:46,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:27:46,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:27:46,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 22:27:46,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:27:46,512 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [233081348] [2020-10-14 22:27:46,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:27:46,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 22:27:46,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849742653] [2020-10-14 22:27:46,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 22:27:46,528 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:27:46,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 22:27:46,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 22:27:46,553 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2020-10-14 22:27:55,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:27:55,639 INFO L93 Difference]: Finished difference Result 1689 states and 3086 transitions. [2020-10-14 22:27:55,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:27:55,642 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2020-10-14 22:27:55,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:27:55,667 INFO L225 Difference]: With dead ends: 1689 [2020-10-14 22:27:55,667 INFO L226 Difference]: Without dead ends: 1009 [2020-10-14 22:27:55,676 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:27:55,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2020-10-14 22:27:55,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 991. [2020-10-14 22:27:55,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 991 states. [2020-10-14 22:27:55,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1526 transitions. [2020-10-14 22:27:55,809 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1526 transitions. Word has length 44 [2020-10-14 22:27:55,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:27:55,810 INFO L479 AbstractCegarLoop]: Abstraction has 991 states and 1526 transitions. [2020-10-14 22:27:55,810 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 22:27:55,811 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1526 transitions. [2020-10-14 22:27:55,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-14 22:27:55,816 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:27:55,816 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:27:55,817 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 22:27:55,817 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:27:55,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:27:55,818 INFO L82 PathProgramCache]: Analyzing trace with hash -1599115940, now seen corresponding path program 1 times [2020-10-14 22:27:55,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:27:55,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1648517664] [2020-10-14 22:27:55,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:27:55,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:27:55,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:56,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:57,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:57,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:27:57,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-14 22:27:57,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:27:57,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1343 [2020-10-14 22:27:57,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:27:57,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:27:57,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 22:27:57,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:27:57,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-14 22:27:57,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:27:57,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:27:57,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:27:57,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:57,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:27:57,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:27:57,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:27:57,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 22:27:57,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:27:57,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:27:57,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:27:57,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:27:57,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:27:57,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:27:57,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:27:57,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:27:57,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:57,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:57,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:27:57,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:27:57,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:27:57,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 275 [2020-10-14 22:27:57,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:27:57,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:27:57,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:27:57,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:27:57,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 22:27:57,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:27:57,709 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 22:27:57,710 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1648517664] [2020-10-14 22:27:57,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:27:57,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 22:27:57,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074671175] [2020-10-14 22:27:57,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:27:57,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:27:57,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:27:57,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:27:57,714 INFO L87 Difference]: Start difference. First operand 991 states and 1526 transitions. Second operand 7 states. [2020-10-14 22:28:11,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:28:11,032 INFO L93 Difference]: Finished difference Result 1997 states and 3067 transitions. [2020-10-14 22:28:11,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 22:28:11,033 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 115 [2020-10-14 22:28:11,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:28:11,041 INFO L225 Difference]: With dead ends: 1997 [2020-10-14 22:28:11,041 INFO L226 Difference]: Without dead ends: 1012 [2020-10-14 22:28:11,045 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-14 22:28:11,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2020-10-14 22:28:11,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 992. [2020-10-14 22:28:11,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 992 states. [2020-10-14 22:28:11,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 992 states to 992 states and 1427 transitions. [2020-10-14 22:28:11,084 INFO L78 Accepts]: Start accepts. Automaton has 992 states and 1427 transitions. Word has length 115 [2020-10-14 22:28:11,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:28:11,084 INFO L479 AbstractCegarLoop]: Abstraction has 992 states and 1427 transitions. [2020-10-14 22:28:11,084 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:28:11,085 INFO L276 IsEmpty]: Start isEmpty. Operand 992 states and 1427 transitions. [2020-10-14 22:28:11,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-14 22:28:11,087 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:28:11,088 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:28:11,088 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 22:28:11,088 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:28:11,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:28:11,089 INFO L82 PathProgramCache]: Analyzing trace with hash 1735541800, now seen corresponding path program 1 times [2020-10-14 22:28:11,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:28:11,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1218652705] [2020-10-14 22:28:11,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:28:11,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:11,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:11,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:12,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:12,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-14 22:28:12,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:28:12,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1307 [2020-10-14 22:28:12,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:12,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:12,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 22:28:12,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:28:12,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-14 22:28:12,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:28:12,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:28:12,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:12,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:12,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:12,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:28:12,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:12,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 22:28:12,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:12,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:12,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:28:12,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:28:12,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:28:12,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:28:12,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:28:12,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:12,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:12,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:12,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 22:28:12,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:12,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 238 [2020-10-14 22:28:12,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:12,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:12,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:28:12,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:28:12,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 22:28:12,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:28:12,970 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:28:12,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1218652705] [2020-10-14 22:28:12,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:28:12,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:28:12,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846726151] [2020-10-14 22:28:12,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:28:12,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:28:12,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:28:12,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:28:12,975 INFO L87 Difference]: Start difference. First operand 992 states and 1427 transitions. Second operand 8 states. [2020-10-14 22:28:30,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:28:30,291 INFO L93 Difference]: Finished difference Result 2028 states and 3256 transitions. [2020-10-14 22:28:30,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:28:30,293 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 118 [2020-10-14 22:28:30,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:28:30,304 INFO L225 Difference]: With dead ends: 2028 [2020-10-14 22:28:30,304 INFO L226 Difference]: Without dead ends: 1475 [2020-10-14 22:28:30,307 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:28:30,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1475 states. [2020-10-14 22:28:30,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1475 to 1449. [2020-10-14 22:28:30,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1449 states. [2020-10-14 22:28:30,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1449 states to 1449 states and 1996 transitions. [2020-10-14 22:28:30,358 INFO L78 Accepts]: Start accepts. Automaton has 1449 states and 1996 transitions. Word has length 118 [2020-10-14 22:28:30,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:28:30,361 INFO L479 AbstractCegarLoop]: Abstraction has 1449 states and 1996 transitions. [2020-10-14 22:28:30,361 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:28:30,361 INFO L276 IsEmpty]: Start isEmpty. Operand 1449 states and 1996 transitions. [2020-10-14 22:28:30,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-14 22:28:30,375 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:28:30,376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:28:30,377 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 22:28:30,377 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:28:30,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:28:30,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1018095785, now seen corresponding path program 1 times [2020-10-14 22:28:30,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:28:30,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [696854555] [2020-10-14 22:28:30,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:28:30,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:30,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:30,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:32,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:32,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-14 22:28:32,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:28:32,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1689 [2020-10-14 22:28:32,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:32,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:32,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:28:32,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:28:32,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-14 22:28:32,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:28:32,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:28:32,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:32,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:32,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:32,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:28:32,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:32,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 22:28:32,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:32,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:32,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:28:32,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:28:32,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:28:32,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:28:32,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:28:32,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:32,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:32,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:32,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 22:28:32,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:32,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-10-14 22:28:32,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:32,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:32,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:28:32,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:28:32,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 22:28:32,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:28:32,649 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:28:32,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [696854555] [2020-10-14 22:28:32,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:28:32,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 22:28:32,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915673585] [2020-10-14 22:28:32,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:28:32,653 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:28:32,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:28:32,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:28:32,654 INFO L87 Difference]: Start difference. First operand 1449 states and 1996 transitions. Second operand 7 states. [2020-10-14 22:28:46,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:28:46,212 INFO L93 Difference]: Finished difference Result 2542 states and 3620 transitions. [2020-10-14 22:28:46,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 22:28:46,219 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 153 [2020-10-14 22:28:46,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:28:46,228 INFO L225 Difference]: With dead ends: 2542 [2020-10-14 22:28:46,229 INFO L226 Difference]: Without dead ends: 1532 [2020-10-14 22:28:46,232 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-14 22:28:46,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1532 states. [2020-10-14 22:28:46,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1532 to 1456. [2020-10-14 22:28:46,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1456 states. [2020-10-14 22:28:46,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 1991 transitions. [2020-10-14 22:28:46,283 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 1991 transitions. Word has length 153 [2020-10-14 22:28:46,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:28:46,284 INFO L479 AbstractCegarLoop]: Abstraction has 1456 states and 1991 transitions. [2020-10-14 22:28:46,284 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:28:46,284 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 1991 transitions. [2020-10-14 22:28:46,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-14 22:28:46,287 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:28:46,288 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 22:28:46,288 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 22:28:46,288 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:28:46,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:28:46,289 INFO L82 PathProgramCache]: Analyzing trace with hash 1739678345, now seen corresponding path program 1 times [2020-10-14 22:28:46,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:28:46,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [611306863] [2020-10-14 22:28:46,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:28:46,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:46,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:46,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:46,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:48,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:50,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:51,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:51,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-14 22:28:51,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 22:28:51,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 22:28:51,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:51,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:51,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 22:28:51,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:28:51,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-14 22:28:51,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:28:51,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:28:51,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:51,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:51,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:51,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:28:51,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:51,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 22:28:51,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:51,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:51,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:28:51,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:28:51,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:28:51,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:28:51,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:28:51,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:51,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:51,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:51,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:51,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 22:28:51,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:28:51,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-14 22:28:51,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:51,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:51,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:28:51,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:28:51,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 22:28:51,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:28:51,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 22:28:51,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:51,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:51,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:51,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 22:28:51,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:51,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-14 22:28:51,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:51,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:51,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:28:51,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:28:51,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 22:28:51,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:28:51,922 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 137 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 22:28:51,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [611306863] [2020-10-14 22:28:51,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:28:51,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 22:28:51,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166441099] [2020-10-14 22:28:51,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:28:51,924 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:28:51,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:28:51,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:28:51,925 INFO L87 Difference]: Start difference. First operand 1456 states and 1991 transitions. Second operand 8 states. [2020-10-14 22:29:12,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:29:12,201 INFO L93 Difference]: Finished difference Result 4385 states and 6483 transitions. [2020-10-14 22:29:12,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 22:29:12,205 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 187 [2020-10-14 22:29:12,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:29:12,222 INFO L225 Difference]: With dead ends: 4385 [2020-10-14 22:29:12,223 INFO L226 Difference]: Without dead ends: 2898 [2020-10-14 22:29:12,229 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 22:29:12,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2898 states. [2020-10-14 22:29:12,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2898 to 2835. [2020-10-14 22:29:12,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2835 states. [2020-10-14 22:29:12,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2835 states to 2835 states and 3564 transitions. [2020-10-14 22:29:12,326 INFO L78 Accepts]: Start accepts. Automaton has 2835 states and 3564 transitions. Word has length 187 [2020-10-14 22:29:12,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:29:12,326 INFO L479 AbstractCegarLoop]: Abstraction has 2835 states and 3564 transitions. [2020-10-14 22:29:12,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:29:12,327 INFO L276 IsEmpty]: Start isEmpty. Operand 2835 states and 3564 transitions. [2020-10-14 22:29:12,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-10-14 22:29:12,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:29:12,331 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 22:29:12,331 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 22:29:12,331 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:29:12,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:29:12,332 INFO L82 PathProgramCache]: Analyzing trace with hash -2058628339, now seen corresponding path program 1 times [2020-10-14 22:29:12,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:29:12,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [133092036] [2020-10-14 22:29:12,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:29:12,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:29:12,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:12,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:12,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:14,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:29:14,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 245 [2020-10-14 22:29:14,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:29:14,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2212 [2020-10-14 22:29:14,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:29:14,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:29:14,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:29:14,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:29:14,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-14 22:29:14,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:29:14,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:29:14,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:29:14,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:14,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:29:14,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:29:14,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:29:14,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:29:14,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:29:14,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:29:14,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:29:14,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:29:14,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:29:14,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:29:14,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:29:14,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:29:14,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:14,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:29:14,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:29:14,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:29:14,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-14 22:29:14,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:29:14,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:29:14,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:29:14,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:29:14,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:29:14,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:29:14,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:29:14,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:29:14,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:14,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:15,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:29:15,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 22:29:15,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:29:15,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-14 22:29:15,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:29:15,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:29:15,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:29:15,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:29:15,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 22:29:15,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:29:15,183 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 72 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-14 22:29:15,183 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [133092036] [2020-10-14 22:29:15,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:29:15,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 22:29:15,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198189028] [2020-10-14 22:29:15,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 22:29:15,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:29:15,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 22:29:15,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 22:29:15,186 INFO L87 Difference]: Start difference. First operand 2835 states and 3564 transitions. Second operand 6 states. [2020-10-14 22:29:32,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:29:32,040 INFO L93 Difference]: Finished difference Result 6545 states and 8635 transitions. [2020-10-14 22:29:32,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:29:32,043 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 233 [2020-10-14 22:29:32,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:29:32,065 INFO L225 Difference]: With dead ends: 6545 [2020-10-14 22:29:32,065 INFO L226 Difference]: Without dead ends: 4154 [2020-10-14 22:29:32,073 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:29:32,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4154 states. [2020-10-14 22:29:32,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4154 to 3708. [2020-10-14 22:29:32,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3708 states. [2020-10-14 22:29:32,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3708 states to 3708 states and 4994 transitions. [2020-10-14 22:29:32,192 INFO L78 Accepts]: Start accepts. Automaton has 3708 states and 4994 transitions. Word has length 233 [2020-10-14 22:29:32,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:29:32,192 INFO L479 AbstractCegarLoop]: Abstraction has 3708 states and 4994 transitions. [2020-10-14 22:29:32,193 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 22:29:32,193 INFO L276 IsEmpty]: Start isEmpty. Operand 3708 states and 4994 transitions. [2020-10-14 22:29:32,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2020-10-14 22:29:32,199 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:29:32,199 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-14 22:29:32,200 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 22:29:32,200 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:29:32,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:29:32,200 INFO L82 PathProgramCache]: Analyzing trace with hash 1271961664, now seen corresponding path program 1 times [2020-10-14 22:29:32,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:29:32,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [165894885] [2020-10-14 22:29:32,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:29:32,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:29:32,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:32,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:33,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:36,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:36,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:29:36,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 318 [2020-10-14 22:29:36,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:29:36,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4554 [2020-10-14 22:29:36,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:29:36,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:29:36,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:29:36,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:29:36,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-14 22:29:36,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:29:36,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:29:36,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:29:36,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:36,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:29:36,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:29:36,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:29:36,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 22:29:36,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:29:36,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:29:36,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:29:36,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:29:36,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:29:36,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:29:36,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:29:37,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:29:37,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:37,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:29:37,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:29:37,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:29:37,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-14 22:29:37,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:29:37,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:29:37,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:29:37,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:29:37,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:29:37,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 22:29:37,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:29:37,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:29:37,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:37,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:29:37,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 22:29:37,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:29:37,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-10-14 22:29:37,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:29:37,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:29:37,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:29:37,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:29:37,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-14 22:29:37,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:29:37,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-14 22:29:37,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:29:37,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:37,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:29:37,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:29:37,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:29:37,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 22:29:37,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:29:37,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:29:37,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:29:37,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-14 22:29:37,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:29:37,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:29:37,703 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 199 proven. 70 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-14 22:29:37,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [165894885] [2020-10-14 22:29:37,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:29:37,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:29:37,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112580033] [2020-10-14 22:29:37,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:29:37,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:29:37,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:29:37,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:29:37,709 INFO L87 Difference]: Start difference. First operand 3708 states and 4994 transitions. Second operand 7 states. [2020-10-14 22:29:57,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:29:57,877 INFO L93 Difference]: Finished difference Result 9467 states and 13066 transitions. [2020-10-14 22:29:57,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:29:57,883 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 304 [2020-10-14 22:29:57,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:29:57,912 INFO L225 Difference]: With dead ends: 9467 [2020-10-14 22:29:57,913 INFO L226 Difference]: Without dead ends: 6203 [2020-10-14 22:29:57,924 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:29:57,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6203 states. [2020-10-14 22:29:58,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6203 to 6066. [2020-10-14 22:29:58,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6066 states. [2020-10-14 22:29:58,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6066 states to 6066 states and 7784 transitions. [2020-10-14 22:29:58,057 INFO L78 Accepts]: Start accepts. Automaton has 6066 states and 7784 transitions. Word has length 304 [2020-10-14 22:29:58,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:29:58,058 INFO L479 AbstractCegarLoop]: Abstraction has 6066 states and 7784 transitions. [2020-10-14 22:29:58,058 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:29:58,058 INFO L276 IsEmpty]: Start isEmpty. Operand 6066 states and 7784 transitions. [2020-10-14 22:29:58,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-10-14 22:29:58,065 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:29:58,066 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-14 22:29:58,066 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 22:29:58,066 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:29:58,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:29:58,067 INFO L82 PathProgramCache]: Analyzing trace with hash 1468818415, now seen corresponding path program 1 times [2020-10-14 22:29:58,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:29:58,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1374047222] [2020-10-14 22:29:58,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:29:58,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:29:58,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:58,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:59,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:01,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:01,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:01,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 325 [2020-10-14 22:30:01,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:30:01,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3411 [2020-10-14 22:30:01,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:01,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:01,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:30:01,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:30:01,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 22:30:01,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:30:01,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:30:01,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:01,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:01,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:01,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:30:01,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:30:01,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 22:30:01,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:01,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:01,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:30:01,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:30:01,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:30:01,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:30:01,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:30:01,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:01,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:01,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:01,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:30:01,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:30:01,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-14 22:30:01,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:01,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:01,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:30:01,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:30:01,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:30:01,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:30:01,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:30:01,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:01,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:02,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:02,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 22:30:02,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:30:02,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 240 [2020-10-14 22:30:02,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:02,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:02,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:30:02,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:30:02,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 22:30:02,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:30:02,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-14 22:30:02,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:02,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:02,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:02,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:30:02,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:30:02,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 22:30:02,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:02,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:02,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:30:02,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-14 22:30:02,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:30:02,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:30:02,905 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 199 proven. 70 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-14 22:30:02,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1374047222] [2020-10-14 22:30:02,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:30:02,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 22:30:02,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157756311] [2020-10-14 22:30:02,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:30:02,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:30:02,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:30:02,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:30:02,908 INFO L87 Difference]: Start difference. First operand 6066 states and 7784 transitions. Second operand 8 states. [2020-10-14 22:30:22,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:30:22,571 INFO L93 Difference]: Finished difference Result 13154 states and 16846 transitions. [2020-10-14 22:30:22,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:30:22,574 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 311 [2020-10-14 22:30:22,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:30:22,611 INFO L225 Difference]: With dead ends: 13154 [2020-10-14 22:30:22,611 INFO L226 Difference]: Without dead ends: 7532 [2020-10-14 22:30:22,626 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:30:22,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7532 states. [2020-10-14 22:30:22,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7532 to 6968. [2020-10-14 22:30:22,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6968 states. [2020-10-14 22:30:22,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6968 states to 6968 states and 8808 transitions. [2020-10-14 22:30:22,804 INFO L78 Accepts]: Start accepts. Automaton has 6968 states and 8808 transitions. Word has length 311 [2020-10-14 22:30:22,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:30:22,804 INFO L479 AbstractCegarLoop]: Abstraction has 6968 states and 8808 transitions. [2020-10-14 22:30:22,805 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:30:22,805 INFO L276 IsEmpty]: Start isEmpty. Operand 6968 states and 8808 transitions. [2020-10-14 22:30:22,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-10-14 22:30:22,813 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:30:22,813 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-14 22:30:22,813 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 22:30:22,814 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:30:22,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:30:22,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1910857103, now seen corresponding path program 1 times [2020-10-14 22:30:22,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:30:22,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1179405603] [2020-10-14 22:30:22,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:30:22,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:22,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:23,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:23,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:27,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:27,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 349 [2020-10-14 22:30:27,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:30:27,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-14 22:30:27,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:27,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:27,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 22:30:27,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:30:27,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 224 [2020-10-14 22:30:27,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:30:28,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:30:28,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:28,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:28,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:28,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:30:28,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:30:28,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 22:30:28,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:28,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:28,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:30:28,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:30:28,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:30:28,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:30:28,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:30:28,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:28,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:28,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:28,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:30:28,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:30:28,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-14 22:30:28,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:28,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:28,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:30:28,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:30:28,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 22:30:28,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:30:28,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:30:28,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:28,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:28,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:28,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 22:30:28,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:30:28,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-14 22:30:28,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:28,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:28,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:30:28,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:30:28,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-14 22:30:28,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:30:29,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2020-10-14 22:30:29,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:29,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:29,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:29,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 22:30:29,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:30:29,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 22:30:29,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:29,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:29,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:30:29,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-14 22:30:29,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:30:29,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:30:29,311 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 116 proven. 225 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 22:30:29,312 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1179405603] [2020-10-14 22:30:29,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:30:29,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 22:30:29,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475547785] [2020-10-14 22:30:29,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 22:30:29,314 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:30:29,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 22:30:29,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-14 22:30:29,315 INFO L87 Difference]: Start difference. First operand 6968 states and 8808 transitions. Second operand 10 states. [2020-10-14 22:30:29,466 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2020-10-14 22:30:58,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:30:58,356 INFO L93 Difference]: Finished difference Result 14143 states and 18017 transitions. [2020-10-14 22:30:58,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 22:30:58,370 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 335 [2020-10-14 22:30:58,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:30:58,411 INFO L225 Difference]: With dead ends: 14143 [2020-10-14 22:30:58,412 INFO L226 Difference]: Without dead ends: 7619 [2020-10-14 22:30:58,430 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2020-10-14 22:30:58,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7619 states. [2020-10-14 22:30:58,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7619 to 7408. [2020-10-14 22:30:58,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7408 states. [2020-10-14 22:30:58,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7408 states to 7408 states and 9254 transitions. [2020-10-14 22:30:58,643 INFO L78 Accepts]: Start accepts. Automaton has 7408 states and 9254 transitions. Word has length 335 [2020-10-14 22:30:58,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:30:58,644 INFO L479 AbstractCegarLoop]: Abstraction has 7408 states and 9254 transitions. [2020-10-14 22:30:58,644 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 22:30:58,644 INFO L276 IsEmpty]: Start isEmpty. Operand 7408 states and 9254 transitions. [2020-10-14 22:30:58,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2020-10-14 22:30:58,655 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:30:58,656 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:30:58,656 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 22:30:58,657 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:30:58,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:30:58,658 INFO L82 PathProgramCache]: Analyzing trace with hash 212826561, now seen corresponding path program 1 times [2020-10-14 22:30:58,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:30:58,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [242039893] [2020-10-14 22:30:58,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:30:58,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:59,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:59,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:59,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:59,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 350 [2020-10-14 22:30:59,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:30:59,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1159 [2020-10-14 22:30:59,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:59,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:59,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:30:59,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 303 [2020-10-14 22:30:59,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 22:30:59,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:31:00,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:31:00,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:31:00,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:00,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:31:00,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:31:00,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:31:00,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 22:31:00,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:31:00,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:31:00,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:31:00,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:31:00,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:31:00,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:31:00,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:31:00,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:31:00,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:00,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:31:00,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 297 [2020-10-14 22:31:00,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:31:00,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-14 22:31:00,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:31:00,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:31:00,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:31:00,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:31:00,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 288 [2020-10-14 22:31:00,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:31:00,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:31:00,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:31:00,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:00,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:31:00,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 22:31:00,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:31:00,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 22:31:00,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:31:00,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:31:00,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:31:00,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:31:00,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 22:31:00,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:31:00,662 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:31:00,662 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [242039893] [2020-10-14 22:31:00,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:31:00,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 22:31:00,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46413953] [2020-10-14 22:31:00,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 22:31:00,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:31:00,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 22:31:00,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:31:00,665 INFO L87 Difference]: Start difference. First operand 7408 states and 9254 transitions. Second operand 5 states. [2020-10-14 22:31:26,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:31:26,870 INFO L93 Difference]: Finished difference Result 17052 states and 21021 transitions. [2020-10-14 22:31:26,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:31:26,880 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 338 [2020-10-14 22:31:26,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:31:26,911 INFO L225 Difference]: With dead ends: 17052 [2020-10-14 22:31:26,912 INFO L226 Difference]: Without dead ends: 9627 [2020-10-14 22:31:26,929 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 22:31:26,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9627 states. [2020-10-14 22:31:27,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9627 to 9603. [2020-10-14 22:31:27,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9603 states. [2020-10-14 22:31:27,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9603 states to 9603 states and 11677 transitions. [2020-10-14 22:31:27,137 INFO L78 Accepts]: Start accepts. Automaton has 9603 states and 11677 transitions. Word has length 338 [2020-10-14 22:31:27,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:31:27,138 INFO L479 AbstractCegarLoop]: Abstraction has 9603 states and 11677 transitions. [2020-10-14 22:31:27,138 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 22:31:27,138 INFO L276 IsEmpty]: Start isEmpty. Operand 9603 states and 11677 transitions. [2020-10-14 22:31:27,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2020-10-14 22:31:27,158 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:31:27,159 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-14 22:31:27,159 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 22:31:27,159 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:31:27,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:31:27,160 INFO L82 PathProgramCache]: Analyzing trace with hash 1657428072, now seen corresponding path program 1 times [2020-10-14 22:31:27,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:31:27,161 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [479347183] [2020-10-14 22:31:27,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:31:27,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:31:27,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:27,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:28,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking...