/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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/Problem19_label55.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:40:41,045 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:40:41,051 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:40:41,099 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:40:41,099 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:40:41,107 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:40:41,110 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:40:41,113 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:40:41,115 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:40:41,119 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:40:41,120 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:40:41,121 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:40:41,121 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:40:41,124 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:40:41,126 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:40:41,128 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:40:41,129 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:40:41,131 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:40:41,132 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:40:41,138 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:40:41,140 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:40:41,141 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:40:41,142 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:40:41,143 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:40:41,155 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:40:41,155 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:40:41,155 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:40:41,156 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:40:41,158 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:40:41,159 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:40:41,159 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:40:41,160 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:40:41,160 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:40:41,165 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:40:41,166 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:40:41,167 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:40:41,167 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:40:41,167 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:40:41,168 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:40:41,171 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:40:41,171 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:40:41,172 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 04:40:41,210 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:40:41,210 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:40:41,212 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:40:41,213 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:40:41,213 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:40:41,213 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:40:41,214 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:40:41,214 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:40:41,214 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:40:41,214 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:40:41,215 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:40:41,216 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:40:41,216 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:40:41,216 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:40:41,217 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:40:41,217 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:40:41,217 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:40:41,217 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:40:41,217 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:40:41,218 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:40:41,218 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:40:41,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:40:41,219 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:40:41,219 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:40:41,219 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:40:41,219 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:40:41,219 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:40:41,219 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:40:41,220 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:40:41,220 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 04:40:41,521 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:40:41,534 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:40:41,538 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:40:41,539 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:40:41,540 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:40:41,541 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label55.c [2020-10-14 04:40:41,605 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/68078b791/bdd418b6f8974e8590242a3473037684/FLAGe61679899 [2020-10-14 04:40:42,523 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:40:42,524 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem19_label55.c [2020-10-14 04:40:42,575 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/68078b791/bdd418b6f8974e8590242a3473037684/FLAGe61679899 [2020-10-14 04:40:42,952 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/68078b791/bdd418b6f8974e8590242a3473037684 [2020-10-14 04:40:42,963 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:40:42,964 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:40:42,966 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:40:42,966 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:40:42,970 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:40:42,971 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:40:42" (1/1) ... [2020-10-14 04:40:42,975 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ed69f49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:40:42, skipping insertion in model container [2020-10-14 04:40:42,976 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:40:42" (1/1) ... [2020-10-14 04:40:42,985 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:40:43,273 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:40:45,803 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:40:45,810 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:40:46,765 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:40:46,818 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:40:46,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:40:46 WrapperNode [2020-10-14 04:40:46,821 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:40:46,822 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:40:46,822 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:40:46,822 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:40:46,837 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:40:46" (1/1) ... [2020-10-14 04:40:46,839 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:40:46" (1/1) ... [2020-10-14 04:40:46,925 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:40:46" (1/1) ... [2020-10-14 04:40:46,926 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:40:46" (1/1) ... [2020-10-14 04:40:47,196 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:40:46" (1/1) ... [2020-10-14 04:40:47,235 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:40:46" (1/1) ... [2020-10-14 04:40:47,277 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:40:46" (1/1) ... [2020-10-14 04:40:47,371 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:40:47,372 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:40:47,372 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:40:47,372 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:40:47,374 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:40:46" (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 04:40:47,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:40:47,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:40:47,466 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 04:40:47,466 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 04:40:47,467 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 04:40:47,467 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 04:40:47,467 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-14 04:40:47,467 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-14 04:40:47,467 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:40:47,468 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 04:40:47,468 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 04:40:47,468 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 04:40:47,468 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 04:40:47,469 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-14 04:40:47,469 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-14 04:40:47,469 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:40:47,469 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 04:40:47,469 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 04:40:47,470 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:40:47,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:40:47,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:40:59,192 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:40:59,192 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 04:40:59,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:40:59 BoogieIcfgContainer [2020-10-14 04:40:59,208 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:40:59,209 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:40:59,209 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:40:59,213 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:40:59,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:40:42" (1/3) ... [2020-10-14 04:40:59,214 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42755ece and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:40:59, skipping insertion in model container [2020-10-14 04:40:59,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:40:46" (2/3) ... [2020-10-14 04:40:59,214 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42755ece and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:40:59, skipping insertion in model container [2020-10-14 04:40:59,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:40:59" (3/3) ... [2020-10-14 04:40:59,217 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem19_label55.c [2020-10-14 04:40:59,228 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:40:59,237 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:40:59,252 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:40:59,284 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:40:59,284 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:40:59,284 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:40:59,284 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:40:59,284 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:40:59,285 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:40:59,285 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:40:59,285 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:40:59,333 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states. [2020-10-14 04:40:59,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-14 04:40:59,340 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:40:59,341 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] [2020-10-14 04:40:59,342 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:40:59,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:40:59,349 INFO L82 PathProgramCache]: Analyzing trace with hash -775038598, now seen corresponding path program 1 times [2020-10-14 04:40:59,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:40:59,358 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [847795741] [2020-10-14 04:40:59,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:40:59,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:40:59,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:40:59,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:40:59,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 04:40:59,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:40:59,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 351 [2020-10-14 04:40:59,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:40:59,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:40:59,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:40:59,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:40:59,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 04:40:59,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 04:40:59,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:40:59,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:41:00,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:41:00,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:41:00,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:41:00,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:41:00,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 04:41:00,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:41:00,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:41:00,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:41:00,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:41:00,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:41:00,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:41:00,023 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 04:41:00,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [847795741] [2020-10-14 04:41:00,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:41:00,027 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 04:41:00,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716406147] [2020-10-14 04:41:00,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:41:00,034 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:41:00,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:41:00,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:41:00,052 INFO L87 Difference]: Start difference. First operand 1777 states. Second operand 4 states. [2020-10-14 04:41:22,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:41:22,260 INFO L93 Difference]: Finished difference Result 5031 states and 9453 transitions. [2020-10-14 04:41:22,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:41:22,263 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-14 04:41:22,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:41:22,313 INFO L225 Difference]: With dead ends: 5031 [2020-10-14 04:41:22,314 INFO L226 Difference]: Without dead ends: 3190 [2020-10-14 04:41:22,328 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:41:22,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3190 states. [2020-10-14 04:41:22,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3190 to 3184. [2020-10-14 04:41:22,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3184 states. [2020-10-14 04:41:22,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3184 states to 3184 states and 4965 transitions. [2020-10-14 04:41:22,622 INFO L78 Accepts]: Start accepts. Automaton has 3184 states and 4965 transitions. Word has length 20 [2020-10-14 04:41:22,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:41:22,624 INFO L479 AbstractCegarLoop]: Abstraction has 3184 states and 4965 transitions. [2020-10-14 04:41:22,624 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:41:22,624 INFO L276 IsEmpty]: Start isEmpty. Operand 3184 states and 4965 transitions. [2020-10-14 04:41:22,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-14 04:41:22,635 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:41:22,636 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:41:22,637 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:41:22,637 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:41:22,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:41:22,638 INFO L82 PathProgramCache]: Analyzing trace with hash 737075260, now seen corresponding path program 1 times [2020-10-14 04:41:22,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:41:22,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [3634089] [2020-10-14 04:41:22,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:41:22,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:41:22,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:41:22,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:41:22,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:41:23,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:41:23,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:41:24,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:41:24,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:41:24,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 04:41:24,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 04:41:24,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1628 [2020-10-14 04:41:24,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:41:24,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:41:24,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:41:24,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-14 04:41:24,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:41:24,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:41:24,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:41:24,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:41:24,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:41:24,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:41:24,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:41:24,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:41:24,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:41:24,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:41:24,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:41:24,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:41:24,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:41:24,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:41:24,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-14 04:41:24,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:41:24,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:41:24,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:41:24,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:41:24,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 04:41:24,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:41:24,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-14 04:41:24,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:41:24,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:41:24,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:41:24,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-14 04:41:24,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:41:24,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:41:24,656 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:41:24,656 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [3634089] [2020-10-14 04:41:24,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:41:24,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 04:41:24,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815600840] [2020-10-14 04:41:24,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:41:24,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:41:24,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:41:24,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:41:24,661 INFO L87 Difference]: Start difference. First operand 3184 states and 4965 transitions. Second operand 5 states. [2020-10-14 04:41:58,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:41:58,612 INFO L93 Difference]: Finished difference Result 9218 states and 14512 transitions. [2020-10-14 04:41:58,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:41:58,615 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 93 [2020-10-14 04:41:58,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:41:58,647 INFO L225 Difference]: With dead ends: 9218 [2020-10-14 04:41:58,647 INFO L226 Difference]: Without dead ends: 6040 [2020-10-14 04:41:58,657 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:41:58,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6040 states. [2020-10-14 04:41:58,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6040 to 6024. [2020-10-14 04:41:58,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6024 states. [2020-10-14 04:41:58,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6024 states to 6024 states and 8357 transitions. [2020-10-14 04:41:58,886 INFO L78 Accepts]: Start accepts. Automaton has 6024 states and 8357 transitions. Word has length 93 [2020-10-14 04:41:58,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:41:58,886 INFO L479 AbstractCegarLoop]: Abstraction has 6024 states and 8357 transitions. [2020-10-14 04:41:58,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:41:58,887 INFO L276 IsEmpty]: Start isEmpty. Operand 6024 states and 8357 transitions. [2020-10-14 04:41:58,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-14 04:41:58,889 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:41:58,890 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:41:58,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:41:58,890 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:41:58,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:41:58,891 INFO L82 PathProgramCache]: Analyzing trace with hash -951868482, now seen corresponding path program 1 times [2020-10-14 04:41:58,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:41:58,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [951806881] [2020-10-14 04:41:58,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:41:58,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:41:58,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:41:59,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:41:59,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:41:59,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:41:59,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 04:41:59,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:41:59,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 924 [2020-10-14 04:41:59,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:41:59,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:41:59,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:41:59,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-14 04:41:59,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 04:41:59,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:41:59,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:41:59,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:41:59,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:41:59,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:41:59,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:41:59,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:41:59,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:41:59,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:41:59,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:41:59,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:41:59,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:41:59,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:41:59,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:41:59,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:41:59,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:41:59,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:42:00,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:42:00,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 04:42:00,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:42:00,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-14 04:42:00,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:42:00,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:42:00,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:42:00,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:42:00,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 04:42:00,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:42:00,082 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:42:00,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [951806881] [2020-10-14 04:42:00,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:42:00,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:42:00,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633044479] [2020-10-14 04:42:00,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:42:00,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:42:00,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:42:00,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:42:00,085 INFO L87 Difference]: Start difference. First operand 6024 states and 8357 transitions. Second operand 5 states. [2020-10-14 04:42:39,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:42:39,162 INFO L93 Difference]: Finished difference Result 17773 states and 24918 transitions. [2020-10-14 04:42:39,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:42:39,164 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 93 [2020-10-14 04:42:39,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:42:39,226 INFO L225 Difference]: With dead ends: 17773 [2020-10-14 04:42:39,230 INFO L226 Difference]: Without dead ends: 11755 [2020-10-14 04:42:39,246 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:42:39,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11755 states. [2020-10-14 04:42:39,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11755 to 11707. [2020-10-14 04:42:39,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11707 states. [2020-10-14 04:42:39,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11707 states to 11707 states and 15125 transitions. [2020-10-14 04:42:39,579 INFO L78 Accepts]: Start accepts. Automaton has 11707 states and 15125 transitions. Word has length 93 [2020-10-14 04:42:39,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:42:39,582 INFO L479 AbstractCegarLoop]: Abstraction has 11707 states and 15125 transitions. [2020-10-14 04:42:39,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:42:39,582 INFO L276 IsEmpty]: Start isEmpty. Operand 11707 states and 15125 transitions. [2020-10-14 04:42:39,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-14 04:42:39,592 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:42:39,592 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 04:42:39,593 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 04:42:39,593 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:42:39,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:42:39,594 INFO L82 PathProgramCache]: Analyzing trace with hash -1403909147, now seen corresponding path program 1 times [2020-10-14 04:42:39,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:42:39,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1676973659] [2020-10-14 04:42:39,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:42:39,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:42:39,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:42:39,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:42:40,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:42:40,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 04:42:40,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:42:40,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 825 [2020-10-14 04:42:40,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:42:40,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:42:40,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:42:40,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-14 04:42:40,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 04:42:40,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:42:40,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:42:40,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:42:40,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:42:40,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:42:40,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:42:40,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:42:40,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:42:40,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:42:40,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:42:40,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:42:40,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:42:40,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:42:40,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:42:40,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:42:40,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:42:40,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:42:40,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:42:40,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 04:42:40,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:42:40,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-14 04:42:40,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:42:40,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:42:40,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:42:40,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:42:40,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 04:42:40,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:42:40,795 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:42:40,797 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1676973659] [2020-10-14 04:42:40,798 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:42:40,798 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:42:40,798 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537301215] [2020-10-14 04:42:40,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:42:40,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:42:40,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:42:40,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:42:40,803 INFO L87 Difference]: Start difference. First operand 11707 states and 15125 transitions. Second operand 5 states. [2020-10-14 04:43:35,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:43:35,185 INFO L93 Difference]: Finished difference Result 29062 states and 38877 transitions. [2020-10-14 04:43:35,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:43:35,190 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2020-10-14 04:43:35,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:43:35,276 INFO L225 Difference]: With dead ends: 29062 [2020-10-14 04:43:35,276 INFO L226 Difference]: Without dead ends: 17361 [2020-10-14 04:43:35,303 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:43:35,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17361 states. [2020-10-14 04:43:35,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17361 to 17335. [2020-10-14 04:43:35,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17335 states. [2020-10-14 04:43:35,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17335 states to 17335 states and 21637 transitions. [2020-10-14 04:43:35,750 INFO L78 Accepts]: Start accepts. Automaton has 17335 states and 21637 transitions. Word has length 101 [2020-10-14 04:43:35,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:43:35,754 INFO L479 AbstractCegarLoop]: Abstraction has 17335 states and 21637 transitions. [2020-10-14 04:43:35,754 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:43:35,755 INFO L276 IsEmpty]: Start isEmpty. Operand 17335 states and 21637 transitions. [2020-10-14 04:43:35,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-14 04:43:35,761 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:43:35,762 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 04:43:35,762 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 04:43:35,763 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:43:35,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:43:35,763 INFO L82 PathProgramCache]: Analyzing trace with hash 741548311, now seen corresponding path program 1 times [2020-10-14 04:43:35,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:43:35,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [746908594] [2020-10-14 04:43:35,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:43:35,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:43:35,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:43:36,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:43:37,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:43:37,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 04:43:37,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:43:37,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1172 [2020-10-14 04:43:37,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:43:37,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:43:37,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:43:37,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 130 [2020-10-14 04:43:37,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 04:43:37,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:43:37,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:43:37,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:43:37,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:43:37,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:43:37,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:43:37,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:43:37,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:43:37,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:43:37,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:43:37,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:43:37,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:43:37,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:43:37,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:43:37,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:43:37,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:43:37,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:43:37,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:43:37,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-14 04:43:37,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:43:37,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-14 04:43:37,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:43:37,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:43:37,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:43:37,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:43:37,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-14 04:43:37,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:43:37,409 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:43:37,410 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [746908594] [2020-10-14 04:43:37,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:43:37,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:43:37,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476941449] [2020-10-14 04:43:37,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:43:37,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:43:37,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:43:37,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:43:37,413 INFO L87 Difference]: Start difference. First operand 17335 states and 21637 transitions. Second operand 5 states. [2020-10-14 04:44:43,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:44:43,129 INFO L93 Difference]: Finished difference Result 43198 states and 55422 transitions. [2020-10-14 04:44:43,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:44:43,132 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 140 [2020-10-14 04:44:43,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:44:43,220 INFO L225 Difference]: With dead ends: 43198 [2020-10-14 04:44:43,220 INFO L226 Difference]: Without dead ends: 25869 [2020-10-14 04:44:43,260 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 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 04:44:43,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25869 states. [2020-10-14 04:44:43,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25869 to 25780. [2020-10-14 04:44:43,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25780 states. [2020-10-14 04:44:43,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25780 states to 25780 states and 32719 transitions. [2020-10-14 04:44:43,760 INFO L78 Accepts]: Start accepts. Automaton has 25780 states and 32719 transitions. Word has length 140 [2020-10-14 04:44:43,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:44:43,760 INFO L479 AbstractCegarLoop]: Abstraction has 25780 states and 32719 transitions. [2020-10-14 04:44:43,760 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:44:43,761 INFO L276 IsEmpty]: Start isEmpty. Operand 25780 states and 32719 transitions. [2020-10-14 04:44:43,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-14 04:44:43,764 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:44:43,764 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 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 04:44:43,764 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 04:44:43,765 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:44:43,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:44:43,765 INFO L82 PathProgramCache]: Analyzing trace with hash -826183186, now seen corresponding path program 1 times [2020-10-14 04:44:43,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:44:43,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [128733695] [2020-10-14 04:44:43,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:44:43,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:44:43,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:44:44,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:44:44,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:44:44,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:44:46,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:44:46,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-14 04:44:46,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:44:46,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2765 [2020-10-14 04:44:46,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:44:46,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:44:46,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:44:46,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 170 [2020-10-14 04:44:46,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:44:46,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:44:46,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:44:46,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:44:46,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:44:46,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:44:46,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:44:46,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:44:46,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:44:46,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:44:46,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:44:46,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:44:46,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:44:46,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:44:46,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:44:46,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:44:46,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:44:46,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:44:46,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:44:46,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 04:44:46,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:44:46,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 04:44:46,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:44:46,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:44:46,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:44:46,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:44:46,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:44:46,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:44:46,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 04:44:46,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:44:46,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:44:46,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:44:46,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 04:44:46,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:44:46,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-14 04:44:46,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:44:46,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:44:46,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:44:46,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-14 04:44:46,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:44:46,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:44:47,045 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-10-14 04:44:47,045 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [128733695] [2020-10-14 04:44:47,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:44:47,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 04:44:47,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551093053] [2020-10-14 04:44:47,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:44:47,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:44:47,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:44:47,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:44:47,048 INFO L87 Difference]: Start difference. First operand 25780 states and 32719 transitions. Second operand 5 states.