/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=0.6 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label36.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:47:51,013 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:47:51,018 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:47:51,067 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:47:51,067 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:47:51,077 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:47:51,079 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:47:51,083 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:47:51,085 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:47:51,088 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:47:51,090 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:47:51,091 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:47:51,091 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:47:51,094 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:47:51,097 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:47:51,099 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:47:51,101 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:47:51,102 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:47:51,103 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:47:51,112 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:47:51,115 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:47:51,116 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:47:51,118 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:47:51,118 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:47:51,135 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:47:51,135 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:47:51,136 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:47:51,137 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:47:51,137 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:47:51,143 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:47:51,143 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:47:51,144 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:47:51,148 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:47:51,149 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:47:51,150 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:47:51,150 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:47:51,153 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:47:51,154 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:47:51,154 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:47:51,155 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:47:51,156 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:47:51,158 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 06:47:51,204 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:47:51,204 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:47:51,207 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:47:51,207 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:47:51,207 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:47:51,208 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:47:51,208 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:47:51,208 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:47:51,208 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:47:51,209 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:47:51,210 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:47:51,210 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:47:51,210 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:47:51,211 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:47:51,211 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:47:51,211 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:47:51,211 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:47:51,212 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:47:51,212 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:47:51,212 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:47:51,213 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:47:51,213 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:47:51,213 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:47:51,214 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:47:51,214 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:47:51,214 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:47:51,214 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:47:51,215 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:47:51,215 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:47:51,215 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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;log-additional-information=true; [2020-09-25 06:47:51,715 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:47:51,743 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:47:51,751 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:47:51,753 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:47:51,754 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:47:51,755 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label36.c [2020-09-25 06:47:51,857 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/152f5dc72/1a037cafaac049d9b950d35ba0dac25e/FLAG51a53434a [2020-09-25 06:47:52,527 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:47:52,528 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label36.c [2020-09-25 06:47:52,542 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/152f5dc72/1a037cafaac049d9b950d35ba0dac25e/FLAG51a53434a [2020-09-25 06:47:52,763 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/152f5dc72/1a037cafaac049d9b950d35ba0dac25e [2020-09-25 06:47:52,776 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:47:52,782 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:47:52,787 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:47:52,787 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:47:52,792 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:47:52,794 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:47:52" (1/1) ... [2020-09-25 06:47:52,799 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cb7919e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:52, skipping insertion in model container [2020-09-25 06:47:52,799 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:47:52" (1/1) ... [2020-09-25 06:47:52,810 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:47:52,882 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:47:53,380 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:47:53,391 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:47:53,653 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:47:53,676 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:47:53,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:53 WrapperNode [2020-09-25 06:47:53,677 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:47:53,678 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:47:53,678 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:47:53,678 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:47:53,698 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:53" (1/1) ... [2020-09-25 06:47:53,698 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:53" (1/1) ... [2020-09-25 06:47:53,719 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:53" (1/1) ... [2020-09-25 06:47:53,720 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:53" (1/1) ... [2020-09-25 06:47:53,758 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:53" (1/1) ... [2020-09-25 06:47:53,786 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:53" (1/1) ... [2020-09-25 06:47:53,801 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:53" (1/1) ... [2020-09-25 06:47:53,813 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:47:53,813 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:47:53,814 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:47:53,814 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:47:53,815 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:53" (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 06:47:53,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:47:53,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:47:53,913 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 06:47:53,913 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:47:53,913 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 06:47:53,913 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:47:53,913 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:47:53,914 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:47:53,914 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:47:53,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:47:53,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:47:55,445 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:47:55,445 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 06:47:55,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:47:55 BoogieIcfgContainer [2020-09-25 06:47:55,455 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:47:55,456 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:47:55,456 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:47:55,460 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:47:55,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:47:52" (1/3) ... [2020-09-25 06:47:55,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@600cbf66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:47:55, skipping insertion in model container [2020-09-25 06:47:55,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:53" (2/3) ... [2020-09-25 06:47:55,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@600cbf66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:47:55, skipping insertion in model container [2020-09-25 06:47:55,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:47:55" (3/3) ... [2020-09-25 06:47:55,466 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label36.c [2020-09-25 06:47:55,479 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:47:55,491 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:47:55,516 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:47:55,553 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:47:55,553 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:47:55,553 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:47:55,553 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:47:55,554 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:47:55,554 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:47:55,554 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:47:55,554 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:47:55,588 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 06:47:55,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-25 06:47:55,599 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:47:55,601 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] [2020-09-25 06:47:55,601 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:47:55,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:47:55,610 INFO L82 PathProgramCache]: Analyzing trace with hash -2108492313, now seen corresponding path program 1 times [2020-09-25 06:47:55,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:47:55,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1079871953] [2020-09-25 06:47:55,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:47:55,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:55,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:56,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:56,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:56,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 06:47:56,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:47:56,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 987 [2020-09-25 06:47:56,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:56,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:56,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:47:56,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 06:47:56,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 06:47:56,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 06:47:56,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:47:57,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:57,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:57,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:57,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:47:57,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:57,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 06:47:57,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:57,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:57,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:47:57,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:57,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:47:57,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:57,073 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 06:47:57,075 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1079871953] [2020-09-25 06:47:57,077 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:47:57,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 06:47:57,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416018212] [2020-09-25 06:47:57,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:47:57,086 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:47:57,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:47:57,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:47:57,109 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-09-25 06:48:00,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:48:00,144 INFO L93 Difference]: Finished difference Result 1226 states and 1797 transitions. [2020-09-25 06:48:00,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 06:48:00,146 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2020-09-25 06:48:00,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:48:00,175 INFO L225 Difference]: With dead ends: 1226 [2020-09-25 06:48:00,175 INFO L226 Difference]: Without dead ends: 707 [2020-09-25 06:48:00,188 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:48:00,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2020-09-25 06:48:00,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 695. [2020-09-25 06:48:00,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-25 06:48:00,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 926 transitions. [2020-09-25 06:48:00,302 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 926 transitions. Word has length 58 [2020-09-25 06:48:00,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:48:00,303 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 926 transitions. [2020-09-25 06:48:00,303 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:48:00,303 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 926 transitions. [2020-09-25 06:48:00,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-09-25 06:48:00,314 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:48:00,314 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:48:00,315 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:48:00,315 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:48:00,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:48:00,315 INFO L82 PathProgramCache]: Analyzing trace with hash -1020620813, now seen corresponding path program 1 times [2020-09-25 06:48:00,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:48:00,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1883181331] [2020-09-25 06:48:00,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:48:00,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:00,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:00,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:01,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:01,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:03,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:05,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:05,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-09-25 06:48:05,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 06:48:05,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-09-25 06:48:05,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:05,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:05,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:48:05,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:48:05,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 06:48:05,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:05,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:48:05,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:05,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:05,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:05,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:48:05,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:05,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 06:48:05,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:05,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:05,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:48:05,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:05,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:48:05,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:05,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:48:05,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:05,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:05,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:05,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 06:48:05,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:05,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-09-25 06:48:05,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:05,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:05,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:48:05,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:48:05,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 06:48:05,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:05,910 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:48:05,911 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1883181331] [2020-09-25 06:48:05,911 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:48:05,912 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:48:05,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554961776] [2020-09-25 06:48:05,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:48:05,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:48:05,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:48:05,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:48:05,916 INFO L87 Difference]: Start difference. First operand 695 states and 926 transitions. Second operand 7 states. [2020-09-25 06:48:08,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:48:08,073 INFO L93 Difference]: Finished difference Result 1574 states and 2131 transitions. [2020-09-25 06:48:08,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 06:48:08,075 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 150 [2020-09-25 06:48:08,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:48:08,082 INFO L225 Difference]: With dead ends: 1574 [2020-09-25 06:48:08,083 INFO L226 Difference]: Without dead ends: 894 [2020-09-25 06:48:08,086 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-09-25 06:48:08,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2020-09-25 06:48:08,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 852. [2020-09-25 06:48:08,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 852 states. [2020-09-25 06:48:08,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1127 transitions. [2020-09-25 06:48:08,137 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1127 transitions. Word has length 150 [2020-09-25 06:48:08,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:48:08,138 INFO L479 AbstractCegarLoop]: Abstraction has 852 states and 1127 transitions. [2020-09-25 06:48:08,138 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:48:08,138 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1127 transitions. [2020-09-25 06:48:08,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-25 06:48:08,148 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:48:08,148 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:48:08,148 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:48:08,148 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:48:08,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:48:08,149 INFO L82 PathProgramCache]: Analyzing trace with hash 529447495, now seen corresponding path program 1 times [2020-09-25 06:48:08,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:48:08,150 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [121140674] [2020-09-25 06:48:08,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:48:08,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:08,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:08,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:09,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:11,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:11,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:11,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:13,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:13,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-09-25 06:48:13,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:48:13,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 06:48:13,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:13,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:13,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:48:13,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 06:48:13,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-25 06:48:13,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:13,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:48:13,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:13,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:13,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:13,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:48:13,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:13,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 06:48:13,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:13,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:13,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:48:13,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:13,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:48:13,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:13,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:48:13,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:13,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:13,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:13,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 06:48:13,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:13,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-09-25 06:48:13,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:13,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:13,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:48:13,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:48:13,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 06:48:13,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:13,652 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:48:13,653 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [121140674] [2020-09-25 06:48:13,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:48:13,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 06:48:13,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143688175] [2020-09-25 06:48:13,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:48:13,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:48:13,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:48:13,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:48:13,656 INFO L87 Difference]: Start difference. First operand 852 states and 1127 transitions. Second operand 8 states. [2020-09-25 06:48:16,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:48:16,366 INFO L93 Difference]: Finished difference Result 2370 states and 3338 transitions. [2020-09-25 06:48:16,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 06:48:16,367 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 166 [2020-09-25 06:48:16,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:48:16,385 INFO L225 Difference]: With dead ends: 2370 [2020-09-25 06:48:16,385 INFO L226 Difference]: Without dead ends: 1533 [2020-09-25 06:48:16,391 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-25 06:48:16,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1533 states. [2020-09-25 06:48:16,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1533 to 1171. [2020-09-25 06:48:16,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1171 states. [2020-09-25 06:48:16,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1171 states to 1171 states and 1537 transitions. [2020-09-25 06:48:16,481 INFO L78 Accepts]: Start accepts. Automaton has 1171 states and 1537 transitions. Word has length 166 [2020-09-25 06:48:16,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:48:16,485 INFO L479 AbstractCegarLoop]: Abstraction has 1171 states and 1537 transitions. [2020-09-25 06:48:16,489 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 06:48:16,489 INFO L276 IsEmpty]: Start isEmpty. Operand 1171 states and 1537 transitions. [2020-09-25 06:48:16,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-09-25 06:48:16,504 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:48:16,504 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:48:16,504 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:48:16,505 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:48:16,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:48:16,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1782617119, now seen corresponding path program 1 times [2020-09-25 06:48:16,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:48:16,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [55360844] [2020-09-25 06:48:16,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:48:16,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:16,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:16,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:16,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:20,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:20,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:21,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:21,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-09-25 06:48:21,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 06:48:21,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 06:48:21,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:21,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:21,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:48:21,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 06:48:21,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-25 06:48:21,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:21,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:48:21,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:21,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:21,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:21,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:48:21,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:21,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 06:48:21,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:21,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:21,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:48:21,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:21,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:48:21,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:21,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:48:21,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:21,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:22,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:22,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-25 06:48:22,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:22,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 280 [2020-09-25 06:48:22,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:22,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:22,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:48:22,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:48:22,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-25 06:48:22,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:22,303 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:48:22,304 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [55360844] [2020-09-25 06:48:22,305 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:48:22,305 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:48:22,305 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531887687] [2020-09-25 06:48:22,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:48:22,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:48:22,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:48:22,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:48:22,308 INFO L87 Difference]: Start difference. First operand 1171 states and 1537 transitions. Second operand 7 states. [2020-09-25 06:48:24,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:48:24,434 INFO L93 Difference]: Finished difference Result 2657 states and 3650 transitions. [2020-09-25 06:48:24,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:48:24,437 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 190 [2020-09-25 06:48:24,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:48:24,449 INFO L225 Difference]: With dead ends: 2657 [2020-09-25 06:48:24,449 INFO L226 Difference]: Without dead ends: 1651 [2020-09-25 06:48:24,455 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 06:48:24,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1651 states. [2020-09-25 06:48:24,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1651 to 1489. [2020-09-25 06:48:24,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1489 states. [2020-09-25 06:48:24,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1489 states to 1489 states and 1925 transitions. [2020-09-25 06:48:24,549 INFO L78 Accepts]: Start accepts. Automaton has 1489 states and 1925 transitions. Word has length 190 [2020-09-25 06:48:24,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:48:24,550 INFO L479 AbstractCegarLoop]: Abstraction has 1489 states and 1925 transitions. [2020-09-25 06:48:24,550 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:48:24,550 INFO L276 IsEmpty]: Start isEmpty. Operand 1489 states and 1925 transitions. [2020-09-25 06:48:24,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-09-25 06:48:24,555 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:48:24,555 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 06:48:24,555 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:48:24,556 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:48:24,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:48:24,556 INFO L82 PathProgramCache]: Analyzing trace with hash 1052145571, now seen corresponding path program 1 times [2020-09-25 06:48:24,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:48:24,557 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1321126289] [2020-09-25 06:48:24,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:48:24,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:24,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:24,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:25,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:25,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:25,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:26,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:29,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:29,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-09-25 06:48:29,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:48:29,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 06:48:29,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:29,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:29,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:48:29,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 06:48:29,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-09-25 06:48:29,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:29,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:48:29,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:29,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:29,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:29,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:48:29,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:29,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:48:29,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:29,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:29,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:48:29,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:29,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:48:29,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:29,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:48:29,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:29,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:29,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:29,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 06:48:29,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:29,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-09-25 06:48:29,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:29,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:29,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:48:29,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:29,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 06:48:29,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:29,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 06:48:30,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:30,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:30,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:30,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 06:48:30,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:30,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-09-25 06:48:30,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:30,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:30,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:48:30,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:48:30,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 06:48:30,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 06:48:30,299 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 157 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:48:30,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1321126289] [2020-09-25 06:48:30,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:48:30,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 06:48:30,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087668212] [2020-09-25 06:48:30,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:48:30,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:48:30,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:48:30,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:48:30,303 INFO L87 Difference]: Start difference. First operand 1489 states and 1925 transitions. Second operand 8 states. [2020-09-25 06:48:33,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:48:33,840 INFO L93 Difference]: Finished difference Result 4278 states and 5916 transitions. [2020-09-25 06:48:33,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 06:48:33,842 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 229 [2020-09-25 06:48:33,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:48:33,859 INFO L225 Difference]: With dead ends: 4278 [2020-09-25 06:48:33,859 INFO L226 Difference]: Without dead ends: 2954 [2020-09-25 06:48:33,865 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-09-25 06:48:33,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2954 states. [2020-09-25 06:48:33,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2954 to 2752. [2020-09-25 06:48:33,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2752 states. [2020-09-25 06:48:33,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2752 states to 2752 states and 3675 transitions. [2020-09-25 06:48:33,959 INFO L78 Accepts]: Start accepts. Automaton has 2752 states and 3675 transitions. Word has length 229 [2020-09-25 06:48:33,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:48:33,960 INFO L479 AbstractCegarLoop]: Abstraction has 2752 states and 3675 transitions. [2020-09-25 06:48:33,960 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 06:48:33,960 INFO L276 IsEmpty]: Start isEmpty. Operand 2752 states and 3675 transitions. [2020-09-25 06:48:33,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-09-25 06:48:33,966 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:48:33,966 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 06:48:33,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:48:33,966 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:48:33,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:48:33,967 INFO L82 PathProgramCache]: Analyzing trace with hash -1691089535, now seen corresponding path program 1 times [2020-09-25 06:48:33,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:48:33,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1885402678] [2020-09-25 06:48:33,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:48:34,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:34,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:34,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:34,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:34,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:34,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:36,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:36,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:37,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:37,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:37,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking...