/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label52.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:30:59,771 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:30:59,775 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:30:59,807 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:30:59,808 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:30:59,809 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:30:59,811 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:30:59,814 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:30:59,816 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:30:59,817 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:30:59,818 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:30:59,820 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:30:59,820 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:30:59,821 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:30:59,822 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:30:59,823 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:30:59,824 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:30:59,825 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:30:59,827 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:30:59,829 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:30:59,831 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:30:59,832 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:30:59,833 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:30:59,834 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:30:59,837 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:30:59,837 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:30:59,837 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:30:59,838 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:30:59,839 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:30:59,840 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:30:59,840 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:30:59,841 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:30:59,842 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:30:59,843 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:30:59,844 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:30:59,844 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:30:59,845 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:30:59,845 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:30:59,845 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:30:59,846 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:30:59,847 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:30:59,848 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 04:30:59,875 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:30:59,876 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:30:59,877 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:30:59,877 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:30:59,877 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:30:59,878 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:30:59,878 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:30:59,878 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:30:59,878 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:30:59,879 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:30:59,879 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:30:59,879 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:30:59,879 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:30:59,879 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:30:59,880 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:30:59,880 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:30:59,880 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:30:59,880 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:30:59,880 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:30:59,881 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:30:59,881 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:30:59,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:30:59,881 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:30:59,882 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:30:59,882 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:30:59,882 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:30:59,882 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:30:59,882 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:30:59,883 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:30:59,883 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-09-25 04:31:00,368 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:31:00,391 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:31:00,396 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:31:00,397 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:31:00,398 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:31:00,399 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label52.c [2020-09-25 04:31:00,482 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5297dcd32/98aeade39e2f414dab6f3db99c7965ee/FLAG966c2c74e [2020-09-25 04:31:01,140 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:31:01,141 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label52.c [2020-09-25 04:31:01,168 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5297dcd32/98aeade39e2f414dab6f3db99c7965ee/FLAG966c2c74e [2020-09-25 04:31:01,371 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5297dcd32/98aeade39e2f414dab6f3db99c7965ee [2020-09-25 04:31:01,387 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:31:01,393 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:31:01,397 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:31:01,397 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:31:01,402 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:31:01,403 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:31:01" (1/1) ... [2020-09-25 04:31:01,408 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ad15a05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:01, skipping insertion in model container [2020-09-25 04:31:01,409 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:31:01" (1/1) ... [2020-09-25 04:31:01,420 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:31:01,495 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:31:01,966 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:31:01,975 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:31:02,217 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:31:02,242 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:31:02,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:02 WrapperNode [2020-09-25 04:31:02,243 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:31:02,244 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:31:02,244 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:31:02,244 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:31:02,263 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:02" (1/1) ... [2020-09-25 04:31:02,263 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:02" (1/1) ... [2020-09-25 04:31:02,285 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:02" (1/1) ... [2020-09-25 04:31:02,285 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:02" (1/1) ... [2020-09-25 04:31:02,324 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:02" (1/1) ... [2020-09-25 04:31:02,342 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:02" (1/1) ... [2020-09-25 04:31:02,349 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:02" (1/1) ... [2020-09-25 04:31:02,363 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:31:02,364 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:31:02,366 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:31:02,366 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:31:02,373 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:02" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:31:02,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:31:02,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:31:02,483 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 04:31:02,484 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:31:02,484 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 04:31:02,484 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:31:02,485 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:31:02,486 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:31:02,486 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:31:02,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:31:02,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:31:04,083 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:31:04,083 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 04:31:04,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:31:04 BoogieIcfgContainer [2020-09-25 04:31:04,093 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:31:04,094 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:31:04,094 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:31:04,098 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:31:04,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:31:01" (1/3) ... [2020-09-25 04:31:04,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b9dacaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:31:04, skipping insertion in model container [2020-09-25 04:31:04,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:02" (2/3) ... [2020-09-25 04:31:04,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b9dacaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:31:04, skipping insertion in model container [2020-09-25 04:31:04,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:31:04" (3/3) ... [2020-09-25 04:31:04,103 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label52.c [2020-09-25 04:31:04,116 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:31:04,128 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:31:04,151 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:31:04,188 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:31:04,188 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:31:04,189 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:31:04,189 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:31:04,189 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:31:04,189 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:31:04,189 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:31:04,190 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:31:04,222 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 04:31:04,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-25 04:31:04,234 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:04,235 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] [2020-09-25 04:31:04,236 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:04,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:04,244 INFO L82 PathProgramCache]: Analyzing trace with hash 963589103, now seen corresponding path program 1 times [2020-09-25 04:31:04,256 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:04,257 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1939204010] [2020-09-25 04:31:04,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:04,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:04,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:04,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:05,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:05,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 04:31:05,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:31:05,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 604 [2020-09-25 04:31:05,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:05,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:05,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:31:05,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 04:31:05,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 04:31:05,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 04:31:05,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:31:05,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:05,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:05,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:05,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:31:05,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:05,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 04:31:05,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:05,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:05,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:31:05,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:05,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:31:05,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:05,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:31:05,294 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1939204010] [2020-09-25 04:31:05,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:31:05,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:31:05,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667728665] [2020-09-25 04:31:05,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:31:05,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:31:05,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:31:05,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:31:05,335 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 04:31:07,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:31:07,461 INFO L93 Difference]: Finished difference Result 1069 states and 1495 transitions. [2020-09-25 04:31:07,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:31:07,463 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-09-25 04:31:07,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:31:07,488 INFO L225 Difference]: With dead ends: 1069 [2020-09-25 04:31:07,488 INFO L226 Difference]: Without dead ends: 555 [2020-09-25 04:31:07,500 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:31:07,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-09-25 04:31:07,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 543. [2020-09-25 04:31:07,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-09-25 04:31:07,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 670 transitions. [2020-09-25 04:31:07,602 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 670 transitions. Word has length 60 [2020-09-25 04:31:07,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:31:07,603 INFO L479 AbstractCegarLoop]: Abstraction has 543 states and 670 transitions. [2020-09-25 04:31:07,603 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:31:07,603 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 670 transitions. [2020-09-25 04:31:07,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-09-25 04:31:07,611 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:07,612 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:31:07,612 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:31:07,612 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:07,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:07,613 INFO L82 PathProgramCache]: Analyzing trace with hash 495482008, now seen corresponding path program 1 times [2020-09-25 04:31:07,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:07,613 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [301726550] [2020-09-25 04:31:07,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:07,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:07,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:07,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:08,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:08,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:09,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:09,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:09,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-25 04:31:09,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:31:09,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1810 [2020-09-25 04:31:09,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:09,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:09,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:09,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-25 04:31:09,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 04:31:09,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:09,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:31:09,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:09,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:09,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:09,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:31:09,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:09,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:31:09,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:09,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:09,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:31:09,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:09,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:31:09,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:09,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:31:09,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:09,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:09,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:09,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 04:31:09,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:09,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-09-25 04:31:09,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:09,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:09,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:31:09,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:09,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 04:31:09,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:09,720 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 43 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:31:09,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [301726550] [2020-09-25 04:31:09,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:31:09,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:31:09,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612295863] [2020-09-25 04:31:09,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:31:09,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:31:09,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:31:09,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:31:09,725 INFO L87 Difference]: Start difference. First operand 543 states and 670 transitions. Second operand 5 states. [2020-09-25 04:31:11,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:31:11,618 INFO L93 Difference]: Finished difference Result 1387 states and 1793 transitions. [2020-09-25 04:31:11,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:31:11,619 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 140 [2020-09-25 04:31:11,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:31:11,627 INFO L225 Difference]: With dead ends: 1387 [2020-09-25 04:31:11,627 INFO L226 Difference]: Without dead ends: 859 [2020-09-25 04:31:11,630 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:31:11,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2020-09-25 04:31:11,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 847. [2020-09-25 04:31:11,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 847 states. [2020-09-25 04:31:11,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1051 transitions. [2020-09-25 04:31:11,677 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1051 transitions. Word has length 140 [2020-09-25 04:31:11,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:31:11,678 INFO L479 AbstractCegarLoop]: Abstraction has 847 states and 1051 transitions. [2020-09-25 04:31:11,678 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:31:11,678 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1051 transitions. [2020-09-25 04:31:11,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-09-25 04:31:11,685 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:11,685 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:31:11,685 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:31:11,686 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:11,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:11,686 INFO L82 PathProgramCache]: Analyzing trace with hash -1229481446, now seen corresponding path program 1 times [2020-09-25 04:31:11,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:11,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [389523836] [2020-09-25 04:31:11,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:11,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:11,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:11,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:13,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:14,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:15,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:15,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:15,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:16,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:16,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-09-25 04:31:16,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:31:16,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 04:31:16,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:16,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:16,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:16,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 162 [2020-09-25 04:31:16,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 04:31:16,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:16,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:31:16,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:16,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:16,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:16,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:31:16,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:16,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:31:16,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:16,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:16,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:31:16,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:16,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:31:16,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:16,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:31:16,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:16,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:17,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:17,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 04:31:17,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:17,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-09-25 04:31:17,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:17,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:17,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:31:17,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:17,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-09-25 04:31:17,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:17,133 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 43 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:31:17,134 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [389523836] [2020-09-25 04:31:17,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:31:17,134 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:31:17,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248288358] [2020-09-25 04:31:17,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:31:17,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:31:17,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:31:17,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:31:17,137 INFO L87 Difference]: Start difference. First operand 847 states and 1051 transitions. Second operand 5 states. [2020-09-25 04:31:18,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:31:18,852 INFO L93 Difference]: Finished difference Result 2005 states and 2580 transitions. [2020-09-25 04:31:18,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:31:18,853 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 206 [2020-09-25 04:31:18,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:31:18,866 INFO L225 Difference]: With dead ends: 2005 [2020-09-25 04:31:18,866 INFO L226 Difference]: Without dead ends: 1173 [2020-09-25 04:31:18,869 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:31:18,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1173 states. [2020-09-25 04:31:18,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1173 to 1151. [2020-09-25 04:31:18,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1151 states. [2020-09-25 04:31:18,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 1459 transitions. [2020-09-25 04:31:18,929 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 1459 transitions. Word has length 206 [2020-09-25 04:31:18,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:31:18,936 INFO L479 AbstractCegarLoop]: Abstraction has 1151 states and 1459 transitions. [2020-09-25 04:31:18,936 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:31:18,936 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 1459 transitions. [2020-09-25 04:31:18,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-09-25 04:31:18,943 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:18,944 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:31:18,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:31:18,944 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:18,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:18,945 INFO L82 PathProgramCache]: Analyzing trace with hash 384739223, now seen corresponding path program 1 times [2020-09-25 04:31:18,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:18,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1578512858] [2020-09-25 04:31:18,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:19,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:19,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:19,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:19,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:19,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:22,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:24,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:24,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-09-25 04:31:24,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:31:24,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 04:31:24,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:24,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:24,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:31:24,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 04:31:24,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-09-25 04:31:24,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:24,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:31:24,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:24,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:24,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:24,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:31:24,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:24,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 04:31:24,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:24,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:24,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:31:24,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:24,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:31:24,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:24,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:31:24,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:24,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:24,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:24,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-25 04:31:24,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:24,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 310 [2020-09-25 04:31:24,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:24,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:24,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:24,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:31:24,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-09-25 04:31:24,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:24,738 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:31:24,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1578512858] [2020-09-25 04:31:24,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:31:24,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 04:31:24,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010764763] [2020-09-25 04:31:24,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:31:24,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:31:24,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:31:24,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:31:24,743 INFO L87 Difference]: Start difference. First operand 1151 states and 1459 transitions. Second operand 7 states. [2020-09-25 04:31:27,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:31:27,176 INFO L93 Difference]: Finished difference Result 2673 states and 3467 transitions. [2020-09-25 04:31:27,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 04:31:27,177 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 211 [2020-09-25 04:31:27,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:31:27,190 INFO L225 Difference]: With dead ends: 2673 [2020-09-25 04:31:27,190 INFO L226 Difference]: Without dead ends: 1537 [2020-09-25 04:31:27,196 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:31:27,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1537 states. [2020-09-25 04:31:27,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1537 to 1485. [2020-09-25 04:31:27,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1485 states. [2020-09-25 04:31:27,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1485 states to 1485 states and 1879 transitions. [2020-09-25 04:31:27,260 INFO L78 Accepts]: Start accepts. Automaton has 1485 states and 1879 transitions. Word has length 211 [2020-09-25 04:31:27,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:31:27,261 INFO L479 AbstractCegarLoop]: Abstraction has 1485 states and 1879 transitions. [2020-09-25 04:31:27,262 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:31:27,262 INFO L276 IsEmpty]: Start isEmpty. Operand 1485 states and 1879 transitions. [2020-09-25 04:31:27,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-09-25 04:31:27,271 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:27,272 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 04:31:27,272 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:31:27,272 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:27,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:27,273 INFO L82 PathProgramCache]: Analyzing trace with hash 1582661552, now seen corresponding path program 1 times [2020-09-25 04:31:27,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:27,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1750621512] [2020-09-25 04:31:27,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:27,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:27,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:27,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:27,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:29,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:32,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:32,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 257 [2020-09-25 04:31:32,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:31:32,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-09-25 04:31:32,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:32,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:32,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:32,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-09-25 04:31:32,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-09-25 04:31:32,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:32,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:31:32,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:32,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:32,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:32,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:31:32,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:32,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 04:31:32,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:32,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:32,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:31:32,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:32,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:31:32,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:32,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:31:32,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:32,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:32,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:32,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 04:31:32,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:32,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-25 04:31:32,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:32,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:32,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:31:32,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:32,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-25 04:31:32,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:32,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-09-25 04:31:32,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:32,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:32,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:32,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-25 04:31:32,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:32,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-09-25 04:31:32,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:32,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:32,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:32,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:31:32,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 04:31:32,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:32,895 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 168 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:31:32,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1750621512] [2020-09-25 04:31:32,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:31:32,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:31:32,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117836110] [2020-09-25 04:31:32,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:31:32,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:31:32,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:31:32,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:31:32,900 INFO L87 Difference]: Start difference. First operand 1485 states and 1879 transitions. Second operand 7 states. [2020-09-25 04:31:35,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:31:35,722 INFO L93 Difference]: Finished difference Result 3984 states and 5155 transitions. [2020-09-25 04:31:35,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 04:31:35,723 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 244 [2020-09-25 04:31:35,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:31:35,737 INFO L225 Difference]: With dead ends: 3984 [2020-09-25 04:31:35,737 INFO L226 Difference]: Without dead ends: 2514 [2020-09-25 04:31:35,743 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-25 04:31:35,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2514 states. [2020-09-25 04:31:35,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2514 to 2454. [2020-09-25 04:31:35,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2454 states. [2020-09-25 04:31:35,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2454 states to 2454 states and 3140 transitions. [2020-09-25 04:31:35,822 INFO L78 Accepts]: Start accepts. Automaton has 2454 states and 3140 transitions. Word has length 244 [2020-09-25 04:31:35,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:31:35,823 INFO L479 AbstractCegarLoop]: Abstraction has 2454 states and 3140 transitions. [2020-09-25 04:31:35,823 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:31:35,823 INFO L276 IsEmpty]: Start isEmpty. Operand 2454 states and 3140 transitions. [2020-09-25 04:31:35,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-09-25 04:31:35,831 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:35,832 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 04:31:35,832 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:31:35,832 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:35,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:35,832 INFO L82 PathProgramCache]: Analyzing trace with hash -1155493918, now seen corresponding path program 1 times [2020-09-25 04:31:35,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:35,833 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1181131174] [2020-09-25 04:31:35,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:35,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:35,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:36,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:36,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:36,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:40,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:40,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 276 [2020-09-25 04:31:40,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:31:40,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-09-25 04:31:40,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:40,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:40,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:40,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-09-25 04:31:40,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-09-25 04:31:40,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:31:40,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:31:40,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:40,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:40,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:40,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:31:40,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:40,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:31:40,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:40,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:40,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:31:40,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:40,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:31:40,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:41,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:31:41,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:41,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:41,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:41,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 04:31:41,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:41,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-09-25 04:31:41,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:41,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:41,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:31:41,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:41,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-09-25 04:31:41,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:41,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-09-25 04:31:41,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:41,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:41,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:41,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-25 04:31:41,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:41,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-09-25 04:31:41,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:41,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:41,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:41,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:31:41,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 04:31:41,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:31:41,499 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 181 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:31:41,500 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1181131174] [2020-09-25 04:31:41,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:31:41,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:31:41,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292564059] [2020-09-25 04:31:41,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:31:41,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:31:41,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:31:41,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:31:41,503 INFO L87 Difference]: Start difference. First operand 2454 states and 3140 transitions. Second operand 7 states. [2020-09-25 04:31:43,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:31:43,955 INFO L93 Difference]: Finished difference Result 6046 states and 7812 transitions. [2020-09-25 04:31:43,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 04:31:43,960 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 263 [2020-09-25 04:31:43,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:31:43,983 INFO L225 Difference]: With dead ends: 6046 [2020-09-25 04:31:43,983 INFO L226 Difference]: Without dead ends: 3607 [2020-09-25 04:31:43,992 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-25 04:31:43,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3607 states. [2020-09-25 04:31:44,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3607 to 3551. [2020-09-25 04:31:44,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3551 states. [2020-09-25 04:31:44,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3551 states to 3551 states and 4539 transitions. [2020-09-25 04:31:44,096 INFO L78 Accepts]: Start accepts. Automaton has 3551 states and 4539 transitions. Word has length 263 [2020-09-25 04:31:44,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:31:44,097 INFO L479 AbstractCegarLoop]: Abstraction has 3551 states and 4539 transitions. [2020-09-25 04:31:44,097 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:31:44,097 INFO L276 IsEmpty]: Start isEmpty. Operand 3551 states and 4539 transitions. [2020-09-25 04:31:44,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-09-25 04:31:44,108 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:44,109 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 04:31:44,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 04:31:44,109 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:44,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:44,110 INFO L82 PathProgramCache]: Analyzing trace with hash -1306036851, now seen corresponding path program 1 times [2020-09-25 04:31:44,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:44,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1538362138] [2020-09-25 04:31:44,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:44,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:44,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:44,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:44,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:46,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:46,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking...