/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label13.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:29:44,691 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:29:44,695 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:29:44,721 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:29:44,721 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:29:44,723 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:29:44,725 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:29:44,726 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:29:44,728 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:29:44,729 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:29:44,731 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:29:44,732 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:29:44,732 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:29:44,733 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:29:44,735 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:29:44,736 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:29:44,737 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:29:44,738 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:29:44,740 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:29:44,742 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:29:44,743 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:29:44,745 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:29:44,746 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:29:44,747 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:29:44,750 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:29:44,750 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:29:44,750 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:29:44,751 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:29:44,752 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:29:44,753 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:29:44,753 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:29:44,754 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:29:44,755 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:29:44,756 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:29:44,757 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:29:44,757 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:29:44,758 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:29:44,759 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:29:44,759 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:29:44,760 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:29:44,761 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:29:44,762 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 04:29:44,810 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:29:44,811 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:29:44,814 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:29:44,814 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:29:44,814 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:29:44,815 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:29:44,816 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:29:44,816 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:29:44,816 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:29:44,816 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:29:44,816 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:29:44,816 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:29:44,818 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:29:44,818 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:29:44,818 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:29:44,818 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:29:44,818 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:29:44,819 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:29:44,819 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:29:44,819 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:29:44,819 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:29:44,819 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:29:44,820 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:29:44,820 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:29:44,820 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:29:44,821 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:29:44,821 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:29:44,821 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:29:44,821 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:29:44,821 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-09-25 04:29:45,335 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:29:45,353 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:29:45,357 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:29:45,359 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:29:45,360 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:29:45,361 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label13.c [2020-09-25 04:29:45,441 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/04d2750df/1abc83ff4b68496c981aa445a115338a/FLAG13e8a0eb8 [2020-09-25 04:29:46,107 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:29:46,108 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label13.c [2020-09-25 04:29:46,123 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/04d2750df/1abc83ff4b68496c981aa445a115338a/FLAG13e8a0eb8 [2020-09-25 04:29:46,296 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/04d2750df/1abc83ff4b68496c981aa445a115338a [2020-09-25 04:29:46,311 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:29:46,316 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:29:46,319 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:29:46,320 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:29:46,324 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:29:46,325 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:29:46" (1/1) ... [2020-09-25 04:29:46,330 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8ec4735 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:46, skipping insertion in model container [2020-09-25 04:29:46,330 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:29:46" (1/1) ... [2020-09-25 04:29:46,340 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:29:46,392 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:29:47,052 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:29:47,058 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:29:47,173 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:29:47,197 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:29:47,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:47 WrapperNode [2020-09-25 04:29:47,197 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:29:47,198 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:29:47,198 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:29:47,199 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:29:47,212 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:47" (1/1) ... [2020-09-25 04:29:47,213 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:47" (1/1) ... [2020-09-25 04:29:47,232 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:47" (1/1) ... [2020-09-25 04:29:47,232 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:47" (1/1) ... [2020-09-25 04:29:47,270 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:47" (1/1) ... [2020-09-25 04:29:47,288 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:47" (1/1) ... [2020-09-25 04:29:47,294 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:47" (1/1) ... [2020-09-25 04:29:47,302 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:29:47,303 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:29:47,303 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:29:47,303 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:29:47,305 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:47" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:29:47,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:29:47,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:29:47,403 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 04:29:47,403 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:29:47,404 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 04:29:47,404 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:29:47,404 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:29:47,405 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:29:47,405 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:29:47,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:29:47,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:29:49,086 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:29:49,086 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 04:29:49,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:29:49 BoogieIcfgContainer [2020-09-25 04:29:49,095 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:29:49,097 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:29:49,097 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:29:49,101 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:29:49,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:29:46" (1/3) ... [2020-09-25 04:29:49,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@200ca033 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:29:49, skipping insertion in model container [2020-09-25 04:29:49,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:47" (2/3) ... [2020-09-25 04:29:49,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@200ca033 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:29:49, skipping insertion in model container [2020-09-25 04:29:49,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:29:49" (3/3) ... [2020-09-25 04:29:49,107 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label13.c [2020-09-25 04:29:49,121 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:29:49,133 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:29:49,156 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:29:49,191 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:29:49,191 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:29:49,191 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:29:49,192 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:29:49,192 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:29:49,192 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:29:49,192 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:29:49,192 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:29:49,224 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 04:29:49,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-09-25 04:29:49,237 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:29:49,239 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:29:49,239 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:29:49,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:29:49,247 INFO L82 PathProgramCache]: Analyzing trace with hash -538548697, now seen corresponding path program 1 times [2020-09-25 04:29:49,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:29:49,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1429569316] [2020-09-25 04:29:49,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:29:49,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:49,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:49,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:49,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:50,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:50,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 04:29:50,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:29:50,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1293 [2020-09-25 04:29:50,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:50,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:50,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:29:50,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:29:50,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 04:29:50,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 04:29:50,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:29:50,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:50,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:50,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:50,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:29:50,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:50,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 04:29:50,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:50,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:50,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:29:50,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:50,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:29:50,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:51,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:29:51,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1429569316] [2020-09-25 04:29:51,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:29:51,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 04:29:51,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954437914] [2020-09-25 04:29:51,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:29:51,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:29:51,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:29:51,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:29:51,055 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-09-25 04:29:54,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:29:54,123 INFO L93 Difference]: Finished difference Result 1352 states and 1911 transitions. [2020-09-25 04:29:54,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 04:29:54,125 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 74 [2020-09-25 04:29:54,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:29:54,151 INFO L225 Difference]: With dead ends: 1352 [2020-09-25 04:29:54,151 INFO L226 Difference]: Without dead ends: 806 [2020-09-25 04:29:54,165 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:29:54,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2020-09-25 04:29:54,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 727. [2020-09-25 04:29:54,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 727 states. [2020-09-25 04:29:54,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 896 transitions. [2020-09-25 04:29:54,284 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 896 transitions. Word has length 74 [2020-09-25 04:29:54,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:29:54,285 INFO L479 AbstractCegarLoop]: Abstraction has 727 states and 896 transitions. [2020-09-25 04:29:54,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:29:54,286 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 896 transitions. [2020-09-25 04:29:54,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-09-25 04:29:54,295 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:29:54,296 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 04:29:54,296 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:29:54,296 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:29:54,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:29:54,297 INFO L82 PathProgramCache]: Analyzing trace with hash 607028325, now seen corresponding path program 1 times [2020-09-25 04:29:54,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:29:54,297 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1169188702] [2020-09-25 04:29:54,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:29:54,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:54,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:54,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:54,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:55,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:55,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:55,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:55,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:56,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:59,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:59,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-09-25 04:29:59,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 04:29:59,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 04:29:59,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:59,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:59,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:29:59,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-09-25 04:29:59,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 04:29:59,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 04:29:59,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:29:59,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:59,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:59,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:59,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:29:59,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:59,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:29:59,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:59,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:59,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:29:59,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:59,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:29:59,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:59,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:29:59,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:59,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:59,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:59,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 04:29:59,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:59,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-25 04:29:59,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:59,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:59,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:29:59,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:59,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 04:29:59,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:59,650 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 57 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:29:59,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1169188702] [2020-09-25 04:29:59,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:29:59,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:29:59,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680690828] [2020-09-25 04:29:59,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:29:59,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:29:59,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:29:59,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:29:59,655 INFO L87 Difference]: Start difference. First operand 727 states and 896 transitions. Second operand 5 states. [2020-09-25 04:30:01,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:30:01,536 INFO L93 Difference]: Finished difference Result 1742 states and 2233 transitions. [2020-09-25 04:30:01,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:30:01,537 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-09-25 04:30:01,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:30:01,545 INFO L225 Difference]: With dead ends: 1742 [2020-09-25 04:30:01,545 INFO L226 Difference]: Without dead ends: 1030 [2020-09-25 04:30:01,548 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:30:01,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2020-09-25 04:30:01,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 1030. [2020-09-25 04:30:01,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1030 states. [2020-09-25 04:30:01,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1030 states to 1030 states and 1292 transitions. [2020-09-25 04:30:01,586 INFO L78 Accepts]: Start accepts. Automaton has 1030 states and 1292 transitions. Word has length 157 [2020-09-25 04:30:01,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:30:01,588 INFO L479 AbstractCegarLoop]: Abstraction has 1030 states and 1292 transitions. [2020-09-25 04:30:01,588 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:30:01,588 INFO L276 IsEmpty]: Start isEmpty. Operand 1030 states and 1292 transitions. [2020-09-25 04:30:01,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-25 04:30:01,593 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:30:01,593 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 04:30:01,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:30:01,594 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:30:01,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:30:01,594 INFO L82 PathProgramCache]: Analyzing trace with hash -1359580747, now seen corresponding path program 1 times [2020-09-25 04:30:01,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:30:01,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1608078625] [2020-09-25 04:30:01,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:30:01,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:01,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:01,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:01,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:01,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:02,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:03,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:03,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:03,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:06,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:06,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-25 04:30:06,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 04:30:06,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4445 [2020-09-25 04:30:06,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:06,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:06,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:06,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-09-25 04:30:06,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 04:30:06,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 04:30:06,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:30:06,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:06,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:06,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:06,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:30:06,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:06,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 04:30:06,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:06,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:06,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:30:06,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:06,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:30:06,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:06,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:30:06,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:06,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:06,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:06,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 04:30:06,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:06,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-25 04:30:06,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:06,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:06,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:30:06,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:06,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 04:30:06,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:06,385 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 57 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:30:06,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1608078625] [2020-09-25 04:30:06,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:30:06,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:30:06,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291339878] [2020-09-25 04:30:06,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:30:06,387 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:30:06,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:30:06,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:30:06,388 INFO L87 Difference]: Start difference. First operand 1030 states and 1292 transitions. Second operand 5 states. [2020-09-25 04:30:08,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:30:08,117 INFO L93 Difference]: Finished difference Result 2503 states and 3280 transitions. [2020-09-25 04:30:08,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:30:08,118 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 163 [2020-09-25 04:30:08,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:30:08,139 INFO L225 Difference]: With dead ends: 2503 [2020-09-25 04:30:08,140 INFO L226 Difference]: Without dead ends: 1638 [2020-09-25 04:30:08,145 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:30:08,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1638 states. [2020-09-25 04:30:08,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1638 to 1638. [2020-09-25 04:30:08,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1638 states. [2020-09-25 04:30:08,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1638 states to 1638 states and 2039 transitions. [2020-09-25 04:30:08,228 INFO L78 Accepts]: Start accepts. Automaton has 1638 states and 2039 transitions. Word has length 163 [2020-09-25 04:30:08,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:30:08,231 INFO L479 AbstractCegarLoop]: Abstraction has 1638 states and 2039 transitions. [2020-09-25 04:30:08,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:30:08,231 INFO L276 IsEmpty]: Start isEmpty. Operand 1638 states and 2039 transitions. [2020-09-25 04:30:08,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-09-25 04:30:08,241 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:30:08,241 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:30:08,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:30:08,242 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:30:08,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:30:08,244 INFO L82 PathProgramCache]: Analyzing trace with hash -1134175534, now seen corresponding path program 1 times [2020-09-25 04:30:08,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:30:08,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [782627192] [2020-09-25 04:30:08,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:30:08,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:08,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:08,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:08,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:09,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:09,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:09,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:09,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:13,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:13,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 259 [2020-09-25 04:30:13,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:30:13,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-09-25 04:30:13,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:13,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:13,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:13,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-25 04:30:13,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 04:30:13,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:13,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:30:13,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:13,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:13,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:13,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:30:13,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:13,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:30:13,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:13,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:13,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:30:13,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:13,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:30:13,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:13,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:30:13,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:13,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:13,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:13,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 04:30:13,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:13,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-25 04:30:13,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:13,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:13,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:30:13,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:13,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 04:30:13,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:13,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 04:30:13,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:13,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:13,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:13,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 04:30:13,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:13,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-09-25 04:30:13,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:13,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:13,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:13,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:30:13,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 04:30:13,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:13,894 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 192 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:30:13,895 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [782627192] [2020-09-25 04:30:13,895 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:30:13,895 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:30:13,895 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619685721] [2020-09-25 04:30:13,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:30:13,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:30:13,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:30:13,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:30:13,897 INFO L87 Difference]: Start difference. First operand 1638 states and 2039 transitions. Second operand 7 states. [2020-09-25 04:30:16,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:30:16,151 INFO L93 Difference]: Finished difference Result 3625 states and 4675 transitions. [2020-09-25 04:30:16,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 04:30:16,152 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 246 [2020-09-25 04:30:16,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:30:16,167 INFO L225 Difference]: With dead ends: 3625 [2020-09-25 04:30:16,167 INFO L226 Difference]: Without dead ends: 1656 [2020-09-25 04:30:16,178 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-09-25 04:30:16,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1656 states. [2020-09-25 04:30:16,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1656 to 1616. [2020-09-25 04:30:16,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1616 states. [2020-09-25 04:30:16,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1616 states to 1616 states and 1974 transitions. [2020-09-25 04:30:16,263 INFO L78 Accepts]: Start accepts. Automaton has 1616 states and 1974 transitions. Word has length 246 [2020-09-25 04:30:16,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:30:16,264 INFO L479 AbstractCegarLoop]: Abstraction has 1616 states and 1974 transitions. [2020-09-25 04:30:16,264 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:30:16,264 INFO L276 IsEmpty]: Start isEmpty. Operand 1616 states and 1974 transitions. [2020-09-25 04:30:16,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-09-25 04:30:16,271 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:30:16,272 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:30:16,272 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:30:16,272 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:30:16,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:30:16,273 INFO L82 PathProgramCache]: Analyzing trace with hash -1944800713, now seen corresponding path program 1 times [2020-09-25 04:30:16,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:30:16,274 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [714598105] [2020-09-25 04:30:16,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:30:16,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:16,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:16,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:16,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:17,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:21,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:21,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-09-25 04:30:21,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:30:21,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 04:30:21,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:21,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:21,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:21,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-25 04:30:21,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 04:30:21,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 04:30:21,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:30:21,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:21,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:21,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:21,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:30:21,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:21,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:30:21,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:21,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:21,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:30:21,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:21,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:30:21,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:30:21,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:30:21,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:21,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:21,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:21,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 04:30:21,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:21,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-25 04:30:21,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:21,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:21,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:30:21,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:21,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 04:30:21,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:21,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 04:30:21,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:21,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:21,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:21,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 04:30:21,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:21,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-09-25 04:30:21,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:21,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:21,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:21,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:30:21,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 04:30:21,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:22,118 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 189 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:30:22,119 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [714598105] [2020-09-25 04:30:22,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:30:22,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:30:22,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453186608] [2020-09-25 04:30:22,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:30:22,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:30:22,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:30:22,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:30:22,122 INFO L87 Difference]: Start difference. First operand 1616 states and 1974 transitions. Second operand 7 states. [2020-09-25 04:30:26,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:30:26,547 INFO L93 Difference]: Finished difference Result 3593 states and 4592 transitions. [2020-09-25 04:30:26,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 04:30:26,548 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 261 [2020-09-25 04:30:26,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:30:26,561 INFO L225 Difference]: With dead ends: 3593 [2020-09-25 04:30:26,561 INFO L226 Difference]: Without dead ends: 2142 [2020-09-25 04:30:26,568 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:30:26,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2142 states. [2020-09-25 04:30:26,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2142 to 2088. [2020-09-25 04:30:26,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2088 states. [2020-09-25 04:30:26,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2088 states to 2088 states and 2582 transitions. [2020-09-25 04:30:26,640 INFO L78 Accepts]: Start accepts. Automaton has 2088 states and 2582 transitions. Word has length 261 [2020-09-25 04:30:26,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:30:26,641 INFO L479 AbstractCegarLoop]: Abstraction has 2088 states and 2582 transitions. [2020-09-25 04:30:26,641 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:30:26,641 INFO L276 IsEmpty]: Start isEmpty. Operand 2088 states and 2582 transitions. [2020-09-25 04:30:26,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-09-25 04:30:26,651 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:30:26,652 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, 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, 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] [2020-09-25 04:30:26,652 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:30:26,652 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:30:26,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:30:26,653 INFO L82 PathProgramCache]: Analyzing trace with hash 743815979, now seen corresponding path program 1 times [2020-09-25 04:30:26,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:30:26,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1012474262] [2020-09-25 04:30:26,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:30:26,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:26,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:26,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:27,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:29,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:29,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:31,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:31,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:31,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 346 [2020-09-25 04:30:31,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:30:31,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 04:30:31,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:31,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:31,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:30:31,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 145 [2020-09-25 04:30:31,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-09-25 04:30:31,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:30:31,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:30:31,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:31,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:31,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:31,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:30:31,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:31,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 04:30:31,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:31,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:31,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:30:31,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:31,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:30:31,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:31,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:30:31,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:32,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:32,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:32,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-09-25 04:30:32,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:32,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-09-25 04:30:32,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:32,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:32,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:30:32,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:32,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-09-25 04:30:32,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:32,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-25 04:30:32,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:32,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking...