/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=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label55.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:37:29,001 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:37:29,005 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:37:29,031 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:37:29,031 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:37:29,033 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:37:29,034 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:37:29,036 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:37:29,037 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:37:29,038 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:37:29,039 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:37:29,041 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:37:29,041 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:37:29,042 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:37:29,043 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:37:29,044 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:37:29,045 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:37:29,046 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:37:29,048 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:37:29,050 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:37:29,051 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:37:29,052 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:37:29,054 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:37:29,055 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:37:29,057 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:37:29,058 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:37:29,058 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:37:29,059 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:37:29,059 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:37:29,060 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:37:29,061 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:37:29,061 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:37:29,062 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:37:29,063 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:37:29,064 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:37:29,064 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:37:29,065 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:37:29,065 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:37:29,066 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:37:29,067 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:37:29,067 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:37:29,068 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 05:37:29,094 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:37:29,094 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:37:29,096 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:37:29,096 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:37:29,096 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:37:29,096 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:37:29,097 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:37:29,097 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:37:29,097 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:37:29,097 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:37:29,097 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:37:29,098 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:37:29,098 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:37:29,098 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:37:29,098 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:37:29,098 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:37:29,099 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:37:29,099 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:37:29,099 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:37:29,099 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:37:29,099 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:37:29,100 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:37:29,100 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:37:29,100 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:37:29,100 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:37:29,101 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:37:29,104 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:37:29,104 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:37:29,104 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:37:29,104 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=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-09-25 05:37:29,603 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:37:29,620 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:37:29,625 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:37:29,627 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:37:29,629 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:37:29,630 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label55.c [2020-09-25 05:37:29,731 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/31cc2ee77/df7ae0bd356e49f9992f5604b4e5df1f/FLAG6e3c39286 [2020-09-25 05:37:30,428 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:37:30,430 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label55.c [2020-09-25 05:37:30,447 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/31cc2ee77/df7ae0bd356e49f9992f5604b4e5df1f/FLAG6e3c39286 [2020-09-25 05:37:30,664 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/31cc2ee77/df7ae0bd356e49f9992f5604b4e5df1f [2020-09-25 05:37:30,678 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:37:30,683 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:37:30,684 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:37:30,684 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:37:30,688 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:37:30,690 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:37:30" (1/1) ... [2020-09-25 05:37:30,695 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@528baabb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:30, skipping insertion in model container [2020-09-25 05:37:30,695 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:37:30" (1/1) ... [2020-09-25 05:37:30,706 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:37:30,772 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:37:31,329 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:37:31,336 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:37:31,481 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:37:31,502 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:37:31,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:31 WrapperNode [2020-09-25 05:37:31,502 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:37:31,503 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:37:31,503 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:37:31,504 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:37:31,523 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:31" (1/1) ... [2020-09-25 05:37:31,523 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:31" (1/1) ... [2020-09-25 05:37:31,546 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:31" (1/1) ... [2020-09-25 05:37:31,547 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:31" (1/1) ... [2020-09-25 05:37:31,599 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:31" (1/1) ... [2020-09-25 05:37:31,624 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:31" (1/1) ... [2020-09-25 05:37:31,638 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:31" (1/1) ... [2020-09-25 05:37:31,645 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:37:31,645 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:37:31,646 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:37:31,650 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:37:31,651 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:31" (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 05:37:31,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:37:31,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:37:31,744 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 05:37:31,744 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:37:31,744 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 05:37:31,745 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:37:31,746 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:37:31,747 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:37:31,747 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:37:31,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:37:31,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:37:33,129 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:37:33,130 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:37:33,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:37:33 BoogieIcfgContainer [2020-09-25 05:37:33,141 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:37:33,142 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:37:33,142 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:37:33,146 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:37:33,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:37:30" (1/3) ... [2020-09-25 05:37:33,148 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2577039a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:37:33, skipping insertion in model container [2020-09-25 05:37:33,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:31" (2/3) ... [2020-09-25 05:37:33,149 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2577039a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:37:33, skipping insertion in model container [2020-09-25 05:37:33,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:37:33" (3/3) ... [2020-09-25 05:37:33,151 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label55.c [2020-09-25 05:37:33,166 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:37:33,178 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:37:33,201 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:37:33,237 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:37:33,237 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:37:33,237 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:37:33,237 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:37:33,238 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:37:33,238 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:37:33,238 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:37:33,238 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:37:33,271 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 05:37:33,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-09-25 05:37:33,291 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:37:33,292 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:37:33,293 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:37:33,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:37:33,301 INFO L82 PathProgramCache]: Analyzing trace with hash -1120036286, now seen corresponding path program 1 times [2020-09-25 05:37:33,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:37:33,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [773422313] [2020-09-25 05:37:33,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:37:33,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:33,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:33,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:34,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:34,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:36,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:36,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:37,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:37,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:38,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:38,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:38,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:38,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-25 05:37:38,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 05:37:38,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 05:37:38,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:38,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:38,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:37:38,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 05:37:38,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-25 05:37:38,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 05:37:38,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:37:38,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:38,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:38,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:38,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:37:38,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:38,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 05:37:38,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:38,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:38,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:37:38,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:38,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 05:37:38,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:38,868 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 05:37:38,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [773422313] [2020-09-25 05:37:38,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:37:38,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:37:38,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464816840] [2020-09-25 05:37:38,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:37:38,880 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:37:38,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:37:38,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:37:38,901 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 05:37:41,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:37:41,341 INFO L93 Difference]: Finished difference Result 1396 states and 1850 transitions. [2020-09-25 05:37:41,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:37:41,343 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2020-09-25 05:37:41,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:37:41,371 INFO L225 Difference]: With dead ends: 1396 [2020-09-25 05:37:41,372 INFO L226 Difference]: Without dead ends: 788 [2020-09-25 05:37:41,384 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:37:41,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2020-09-25 05:37:41,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 665. [2020-09-25 05:37:41,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 665 states. [2020-09-25 05:37:41,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 813 transitions. [2020-09-25 05:37:41,511 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 813 transitions. Word has length 131 [2020-09-25 05:37:41,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:37:41,513 INFO L479 AbstractCegarLoop]: Abstraction has 665 states and 813 transitions. [2020-09-25 05:37:41,513 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:37:41,513 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 813 transitions. [2020-09-25 05:37:41,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-09-25 05:37:41,528 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:37:41,528 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:37:41,529 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:37:41,529 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:37:41,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:37:41,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1110069102, now seen corresponding path program 1 times [2020-09-25 05:37:41,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:37:41,530 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1907304491] [2020-09-25 05:37:41,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:37:41,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:41,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:41,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:41,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:42,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:42,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:42,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:44,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:45,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:45,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:46,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:46,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:46,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-09-25 05:37:46,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 05:37:46,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 05:37:46,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:46,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:46,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:37:46,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 05:37:46,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-09-25 05:37:46,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:46,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:37:46,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:46,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:46,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:46,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:37:46,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:46,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 05:37:46,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:46,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:46,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:37:46,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:46,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:37:46,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:37:46,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:37:46,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:46,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:46,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:46,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 05:37:46,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:46,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 05:37:46,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:46,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:46,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:37:46,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:46,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 05:37:46,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:46,844 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:37:46,845 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1907304491] [2020-09-25 05:37:46,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:37:46,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:37:46,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75793157] [2020-09-25 05:37:46,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:37:46,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:37:46,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:37:46,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:37:46,850 INFO L87 Difference]: Start difference. First operand 665 states and 813 transitions. Second operand 5 states. [2020-09-25 05:37:48,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:37:48,476 INFO L93 Difference]: Finished difference Result 1622 states and 2084 transitions. [2020-09-25 05:37:48,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:37:48,478 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-09-25 05:37:48,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:37:48,488 INFO L225 Difference]: With dead ends: 1622 [2020-09-25 05:37:48,488 INFO L226 Difference]: Without dead ends: 979 [2020-09-25 05:37:48,492 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:37:48,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 979 states. [2020-09-25 05:37:48,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 979 to 967. [2020-09-25 05:37:48,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 967 states. [2020-09-25 05:37:48,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 967 states to 967 states and 1216 transitions. [2020-09-25 05:37:48,543 INFO L78 Accepts]: Start accepts. Automaton has 967 states and 1216 transitions. Word has length 149 [2020-09-25 05:37:48,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:37:48,543 INFO L479 AbstractCegarLoop]: Abstraction has 967 states and 1216 transitions. [2020-09-25 05:37:48,544 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:37:48,544 INFO L276 IsEmpty]: Start isEmpty. Operand 967 states and 1216 transitions. [2020-09-25 05:37:48,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-09-25 05:37:48,549 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:37:48,549 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:37:48,550 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:37:48,550 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:37:48,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:37:48,550 INFO L82 PathProgramCache]: Analyzing trace with hash -1319537639, now seen corresponding path program 1 times [2020-09-25 05:37:48,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:37:48,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [608692764] [2020-09-25 05:37:48,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:37:48,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:48,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:48,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:48,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:49,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:49,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:51,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:51,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:53,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:53,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-25 05:37:53,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:37:53,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 05:37:53,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:53,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:53,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:37:53,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 05:37:53,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 05:37:53,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:53,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:37:53,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:53,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:53,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:53,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:37:53,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:53,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 05:37:53,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:53,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:53,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:37:53,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:53,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 05:37:53,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:53,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:37:53,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:53,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:53,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:53,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 05:37:53,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:53,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-25 05:37:53,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:53,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:53,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:37:53,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:37:53,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 05:37:53,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:53,888 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:37:53,889 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [608692764] [2020-09-25 05:37:53,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:37:53,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 05:37:53,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203882936] [2020-09-25 05:37:53,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:37:53,891 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:37:53,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:37:53,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:37:53,892 INFO L87 Difference]: Start difference. First operand 967 states and 1216 transitions. Second operand 7 states. [2020-09-25 05:37:56,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:37:56,561 INFO L93 Difference]: Finished difference Result 2781 states and 3659 transitions. [2020-09-25 05:37:56,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 05:37:56,562 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 175 [2020-09-25 05:37:56,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:37:56,578 INFO L225 Difference]: With dead ends: 2781 [2020-09-25 05:37:56,579 INFO L226 Difference]: Without dead ends: 1836 [2020-09-25 05:37:56,587 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 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 05:37:56,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1836 states. [2020-09-25 05:37:56,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1836 to 1731. [2020-09-25 05:37:56,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1731 states. [2020-09-25 05:37:56,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 2202 transitions. [2020-09-25 05:37:56,684 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 2202 transitions. Word has length 175 [2020-09-25 05:37:56,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:37:56,685 INFO L479 AbstractCegarLoop]: Abstraction has 1731 states and 2202 transitions. [2020-09-25 05:37:56,685 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:37:56,686 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 2202 transitions. [2020-09-25 05:37:56,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-09-25 05:37:56,694 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:37:56,695 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:37:56,695 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:37:56,695 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:37:56,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:37:56,696 INFO L82 PathProgramCache]: Analyzing trace with hash 335216911, now seen corresponding path program 1 times [2020-09-25 05:37:56,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:37:56,697 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2022582504] [2020-09-25 05:37:56,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:37:56,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:56,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:56,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:56,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:57,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:01,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:01,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:01,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:01,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-09-25 05:38:01,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:38:01,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-09-25 05:38:01,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:01,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:01,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:38:01,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 05:38:01,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 05:38:01,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:01,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:38:01,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:01,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:01,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:01,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:38:01,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:01,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 05:38:01,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:01,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:01,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:38:01,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:01,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:38:01,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:01,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:38:01,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:01,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:01,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:01,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 05:38:01,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:01,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 05:38:01,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:01,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:01,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:38:01,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:01,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 05:38:01,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:01,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 05:38:01,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:01,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:02,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:02,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 05:38:02,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:02,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-25 05:38:02,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:02,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:02,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:38:02,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:38:02,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 05:38:02,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:02,062 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 49 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:38:02,062 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2022582504] [2020-09-25 05:38:02,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:38:02,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:38:02,063 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575658774] [2020-09-25 05:38:02,064 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:38:02,064 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:38:02,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:38:02,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:38:02,065 INFO L87 Difference]: Start difference. First operand 1731 states and 2202 transitions. Second operand 7 states. [2020-09-25 05:38:05,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:38:05,426 INFO L93 Difference]: Finished difference Result 5616 states and 7949 transitions. [2020-09-25 05:38:05,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 05:38:05,427 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 187 [2020-09-25 05:38:05,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:38:05,456 INFO L225 Difference]: With dead ends: 5616 [2020-09-25 05:38:05,457 INFO L226 Difference]: Without dead ends: 3907 [2020-09-25 05:38:05,468 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 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 05:38:05,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3907 states. [2020-09-25 05:38:05,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3907 to 3797. [2020-09-25 05:38:05,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3797 states. [2020-09-25 05:38:05,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3797 states to 3797 states and 4929 transitions. [2020-09-25 05:38:05,633 INFO L78 Accepts]: Start accepts. Automaton has 3797 states and 4929 transitions. Word has length 187 [2020-09-25 05:38:05,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:38:05,633 INFO L479 AbstractCegarLoop]: Abstraction has 3797 states and 4929 transitions. [2020-09-25 05:38:05,633 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:38:05,633 INFO L276 IsEmpty]: Start isEmpty. Operand 3797 states and 4929 transitions. [2020-09-25 05:38:05,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-09-25 05:38:05,657 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:38:05,657 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:38:05,657 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:38:05,658 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:38:05,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:38:05,658 INFO L82 PathProgramCache]: Analyzing trace with hash 897918273, now seen corresponding path program 1 times [2020-09-25 05:38:05,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:38:05,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1790691321] [2020-09-25 05:38:05,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:38:05,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:05,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:05,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:05,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:09,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:10,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:10,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:10,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:10,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:10,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-09-25 05:38:10,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:38:10,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5146 [2020-09-25 05:38:10,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:10,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:10,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:38:10,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-09-25 05:38:10,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-09-25 05:38:10,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:10,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:38:10,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:10,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:10,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:10,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:38:10,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:10,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 05:38:10,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:10,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:10,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:38:10,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:10,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:38:10,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:10,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:38:10,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:10,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:10,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:10,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:38:10,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:10,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 05:38:10,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:10,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:10,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:38:10,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:10,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:38:10,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:38:10,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 05:38:11,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:11,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:11,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:11,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 05:38:11,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:11,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 05:38:11,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:11,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:11,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:38:11,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:11,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 05:38:11,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:11,123 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 46 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-25 05:38:11,124 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1790691321] [2020-09-25 05:38:11,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:38:11,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:38:11,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383720217] [2020-09-25 05:38:11,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:38:11,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:38:11,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:38:11,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:38:11,126 INFO L87 Difference]: Start difference. First operand 3797 states and 4929 transitions. Second operand 5 states. [2020-09-25 05:38:12,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:38:12,825 INFO L93 Difference]: Finished difference Result 9133 states and 12107 transitions. [2020-09-25 05:38:12,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:38:12,826 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 191 [2020-09-25 05:38:12,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:38:12,857 INFO L225 Difference]: With dead ends: 9133 [2020-09-25 05:38:12,857 INFO L226 Difference]: Without dead ends: 5378 [2020-09-25 05:38:12,877 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 05:38:12,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5378 states. [2020-09-25 05:38:13,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5378 to 5228. [2020-09-25 05:38:13,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5228 states. [2020-09-25 05:38:13,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5228 states to 5228 states and 6908 transitions. [2020-09-25 05:38:13,060 INFO L78 Accepts]: Start accepts. Automaton has 5228 states and 6908 transitions. Word has length 191 [2020-09-25 05:38:13,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:38:13,062 INFO L479 AbstractCegarLoop]: Abstraction has 5228 states and 6908 transitions. [2020-09-25 05:38:13,062 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:38:13,063 INFO L276 IsEmpty]: Start isEmpty. Operand 5228 states and 6908 transitions. [2020-09-25 05:38:13,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-09-25 05:38:13,095 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:38:13,095 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:38:13,095 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:38:13,096 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:38:13,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:38:13,096 INFO L82 PathProgramCache]: Analyzing trace with hash 955456564, now seen corresponding path program 1 times [2020-09-25 05:38:13,096 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:38:13,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1777500423] [2020-09-25 05:38:13,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:38:13,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:13,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:13,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:13,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:13,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:15,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:18,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:18,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-09-25 05:38:18,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:38:18,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 05:38:18,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:18,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:18,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:38:18,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-09-25 05:38:18,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 05:38:18,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:18,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:38:18,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:18,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:18,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:18,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:38:18,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:18,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 05:38:18,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:18,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:18,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:38:18,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:18,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:38:18,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:18,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:38:18,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:18,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:18,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:18,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 05:38:18,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:18,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 05:38:18,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:18,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:18,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:38:18,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:18,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:38:18,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:18,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 05:38:18,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:18,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:18,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:18,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:38:18,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:18,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 05:38:18,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:18,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:18,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:38:18,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 05:38:18,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 05:38:18,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:38:18,365 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-25 05:38:18,366 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1777500423] [2020-09-25 05:38:18,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:38:18,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 05:38:18,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786865132] [2020-09-25 05:38:18,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:38:18,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:38:18,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:38:18,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:38:18,369 INFO L87 Difference]: Start difference. First operand 5228 states and 6908 transitions. Second operand 5 states.