/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_label55.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:31:09,954 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:31:09,957 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:31:09,985 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:31:09,985 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:31:09,987 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:31:09,988 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:31:09,990 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:31:09,992 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:31:09,993 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:31:09,995 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:31:09,996 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:31:09,996 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:31:09,997 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:31:09,999 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:31:10,000 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:31:10,001 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:31:10,003 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:31:10,004 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:31:10,007 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:31:10,008 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:31:10,009 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:31:10,011 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:31:10,012 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:31:10,015 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:31:10,015 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:31:10,015 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:31:10,016 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:31:10,017 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:31:10,018 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:31:10,018 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:31:10,019 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:31:10,020 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:31:10,021 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:31:10,027 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:31:10,027 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:31:10,031 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:31:10,031 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:31:10,031 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:31:10,032 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:31:10,033 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:31:10,034 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 04:31:10,096 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:31:10,097 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:31:10,098 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:31:10,098 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:31:10,099 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:31:10,102 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:31:10,102 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:31:10,102 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:31:10,103 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:31:10,103 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:31:10,103 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:31:10,103 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:31:10,103 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:31:10,104 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:31:10,106 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:31:10,106 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:31:10,107 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:31:10,107 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:31:10,107 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:31:10,107 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:31:10,108 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:31:10,108 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:31:10,108 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:31:10,109 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:31:10,109 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:31:10,109 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:31:10,109 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:31:10,109 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:31:10,110 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:31:10,110 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 04:31:10,573 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:31:10,601 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:31:10,608 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:31:10,610 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:31:10,611 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:31:10,612 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label55.c [2020-09-25 04:31:10,695 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9bf7cf3cc/67fabc0751cf445c818ce04307ba26a7/FLAGd3a155630 [2020-09-25 04:31:11,363 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:31:11,364 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label55.c [2020-09-25 04:31:11,386 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9bf7cf3cc/67fabc0751cf445c818ce04307ba26a7/FLAGd3a155630 [2020-09-25 04:31:11,599 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9bf7cf3cc/67fabc0751cf445c818ce04307ba26a7 [2020-09-25 04:31:11,615 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:31:11,622 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:31:11,623 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:31:11,623 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:31:11,630 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:31:11,632 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:31:11" (1/1) ... [2020-09-25 04:31:11,637 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@425b51b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:11, skipping insertion in model container [2020-09-25 04:31:11,637 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:31:11" (1/1) ... [2020-09-25 04:31:11,647 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:31:11,722 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:31:12,198 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:31:12,205 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:31:12,422 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:31:12,445 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:31:12,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:12 WrapperNode [2020-09-25 04:31:12,446 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:31:12,447 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:31:12,447 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:31:12,447 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:31:12,464 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:12" (1/1) ... [2020-09-25 04:31:12,464 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:12" (1/1) ... [2020-09-25 04:31:12,483 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:12" (1/1) ... [2020-09-25 04:31:12,484 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:12" (1/1) ... [2020-09-25 04:31:12,522 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:12" (1/1) ... [2020-09-25 04:31:12,545 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:12" (1/1) ... [2020-09-25 04:31:12,550 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:12" (1/1) ... [2020-09-25 04:31:12,574 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:31:12,575 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:31:12,576 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:31:12,576 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:31:12,578 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:12" (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 04:31:12,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:31:12,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:31:12,675 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 04:31:12,676 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:31:12,676 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 04:31:12,676 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:31:12,677 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:31:12,678 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:31:12,678 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:31:12,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:31:12,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:31:14,225 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:31:14,225 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 04:31:14,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:31:14 BoogieIcfgContainer [2020-09-25 04:31:14,234 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:31:14,236 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:31:14,236 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:31:14,240 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:31:14,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:31:11" (1/3) ... [2020-09-25 04:31:14,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33c5de47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:31:14, skipping insertion in model container [2020-09-25 04:31:14,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:12" (2/3) ... [2020-09-25 04:31:14,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33c5de47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:31:14, skipping insertion in model container [2020-09-25 04:31:14,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:31:14" (3/3) ... [2020-09-25 04:31:14,245 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label55.c [2020-09-25 04:31:14,258 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:31:14,270 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:31:14,295 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:31:14,337 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:31:14,338 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:31:14,338 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:31:14,338 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:31:14,338 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:31:14,338 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:31:14,339 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:31:14,339 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:31:14,373 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 04:31:14,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-25 04:31:14,384 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:14,385 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] [2020-09-25 04:31:14,386 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:14,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:14,395 INFO L82 PathProgramCache]: Analyzing trace with hash -18090369, now seen corresponding path program 1 times [2020-09-25 04:31:14,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:14,408 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1866112816] [2020-09-25 04:31:14,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:14,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:14,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:14,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:14,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:15,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:15,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 04:31:15,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:31:15,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 745 [2020-09-25 04:31:15,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:15,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:15,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:31:15,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:31:15,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 04:31:15,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 04:31:15,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:31:15,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:15,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:15,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:15,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:31:15,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:15,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 04:31:15,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:15,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:15,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:31:15,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:15,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:31:15,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:15,516 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 04:31:15,517 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1866112816] [2020-09-25 04:31:15,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:31:15,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:31:15,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915301188] [2020-09-25 04:31:15,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:31:15,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:31:15,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:31:15,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:31:15,574 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 04:31:17,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:31:17,704 INFO L93 Difference]: Finished difference Result 1104 states and 1521 transitions. [2020-09-25 04:31:17,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:31:17,707 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-09-25 04:31:17,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:31:17,734 INFO L225 Difference]: With dead ends: 1104 [2020-09-25 04:31:17,735 INFO L226 Difference]: Without dead ends: 578 [2020-09-25 04:31:17,747 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:31:17,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-25 04:31:17,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 544. [2020-09-25 04:31:17,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-25 04:31:17,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 655 transitions. [2020-09-25 04:31:17,847 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 655 transitions. Word has length 37 [2020-09-25 04:31:17,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:31:17,848 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 655 transitions. [2020-09-25 04:31:17,848 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:31:17,848 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 655 transitions. [2020-09-25 04:31:17,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-09-25 04:31:17,855 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:17,856 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:31:17,856 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:31:17,856 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:17,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:17,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1996109808, now seen corresponding path program 1 times [2020-09-25 04:31:17,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:17,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [7040892] [2020-09-25 04:31:17,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:17,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:17,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:18,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:18,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:18,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:18,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:22,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:22,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-09-25 04:31:22,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:31:22,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4305 [2020-09-25 04:31:22,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:22,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:22,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:22,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 04:31:22,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 04:31:22,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:22,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:31:22,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:22,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:22,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:22,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:31:22,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:22,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 04:31:22,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:22,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:22,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:31:22,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:22,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:31:22,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:31:22,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:31:22,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:22,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:22,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:22,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 04:31:22,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:22,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-09-25 04:31:22,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:22,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:22,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:31:22,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:22,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 04:31:22,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:22,572 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:31:22,573 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [7040892] [2020-09-25 04:31:22,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:31:22,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:31:22,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443771079] [2020-09-25 04:31:22,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:31:22,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:31:22,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:31:22,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:31:22,578 INFO L87 Difference]: Start difference. First operand 544 states and 655 transitions. Second operand 5 states. [2020-09-25 04:31:24,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:31:24,194 INFO L93 Difference]: Finished difference Result 1224 states and 1530 transitions. [2020-09-25 04:31:24,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:31:24,195 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2020-09-25 04:31:24,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:31:24,201 INFO L225 Difference]: With dead ends: 1224 [2020-09-25 04:31:24,201 INFO L226 Difference]: Without dead ends: 695 [2020-09-25 04:31:24,204 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 04:31:24,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2020-09-25 04:31:24,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 695. [2020-09-25 04:31:24,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-25 04:31:24,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 850 transitions. [2020-09-25 04:31:24,238 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 850 transitions. Word has length 116 [2020-09-25 04:31:24,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:31:24,239 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 850 transitions. [2020-09-25 04:31:24,239 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:31:24,239 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 850 transitions. [2020-09-25 04:31:24,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-09-25 04:31:24,242 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:24,243 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:31:24,243 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:31:24,243 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:24,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:24,244 INFO L82 PathProgramCache]: Analyzing trace with hash 804111666, now seen corresponding path program 1 times [2020-09-25 04:31:24,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:24,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1604506192] [2020-09-25 04:31:24,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:24,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:24,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:24,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:24,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:24,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:27,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:27,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-09-25 04:31:27,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:31:27,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3021 [2020-09-25 04:31:27,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:27,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:27,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:27,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-09-25 04:31:27,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 04:31:27,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:27,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:31:27,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:27,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:27,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:27,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:31:27,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:27,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:31:27,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:27,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:27,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:31:27,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:27,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:31:27,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:27,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:31:27,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:27,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:27,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:27,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 04:31:27,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:27,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-09-25 04:31:27,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:27,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:27,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:31:27,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:27,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 04:31:27,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:27,585 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:31:27,585 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1604506192] [2020-09-25 04:31:27,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:31:27,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:31:27,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939787673] [2020-09-25 04:31:27,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:31:27,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:31:27,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:31:27,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:31:27,588 INFO L87 Difference]: Start difference. First operand 695 states and 850 transitions. Second operand 5 states. [2020-09-25 04:31:31,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:31:31,868 INFO L93 Difference]: Finished difference Result 1548 states and 1978 transitions. [2020-09-25 04:31:31,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:31:31,872 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-09-25 04:31:31,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:31:31,895 INFO L225 Difference]: With dead ends: 1548 [2020-09-25 04:31:31,895 INFO L226 Difference]: Without dead ends: 1018 [2020-09-25 04:31:31,898 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 04:31:31,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1018 states. [2020-09-25 04:31:31,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1018 to 999. [2020-09-25 04:31:31,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 999 states. [2020-09-25 04:31:31,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 1219 transitions. [2020-09-25 04:31:31,957 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 1219 transitions. Word has length 126 [2020-09-25 04:31:31,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:31:31,959 INFO L479 AbstractCegarLoop]: Abstraction has 999 states and 1219 transitions. [2020-09-25 04:31:31,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:31:31,965 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 1219 transitions. [2020-09-25 04:31:31,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-09-25 04:31:31,978 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:31,978 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:31:31,979 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:31:31,979 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:31,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:31,980 INFO L82 PathProgramCache]: Analyzing trace with hash -2061157014, now seen corresponding path program 1 times [2020-09-25 04:31:31,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:31,981 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1052393524] [2020-09-25 04:31:31,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:32,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:32,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:32,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:32,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:33,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:33,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-25 04:31:33,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:31:33,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1277 [2020-09-25 04:31:33,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:33,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:33,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:33,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-09-25 04:31:33,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 04:31:33,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:33,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:31:33,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:33,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:33,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:33,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:31:33,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:33,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 04:31:33,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:33,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:33,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:31:33,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:33,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:31:33,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:31:33,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:31:33,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:33,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:33,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:33,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 04:31:33,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:33,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-25 04:31:33,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:33,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:33,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:31:33,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:33,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 04:31:33,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:33,550 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:31:33,552 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1052393524] [2020-09-25 04:31:33,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:31:33,552 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:31:33,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119413601] [2020-09-25 04:31:33,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:31:33,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:31:33,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:31:33,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:31:33,556 INFO L87 Difference]: Start difference. First operand 999 states and 1219 transitions. Second operand 5 states. [2020-09-25 04:31:35,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:31:35,610 INFO L93 Difference]: Finished difference Result 2157 states and 2726 transitions. [2020-09-25 04:31:35,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:31:35,611 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-09-25 04:31:35,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:31:35,619 INFO L225 Difference]: With dead ends: 2157 [2020-09-25 04:31:35,619 INFO L226 Difference]: Without dead ends: 1323 [2020-09-25 04:31:35,624 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 04:31:35,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1323 states. [2020-09-25 04:31:35,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1323 to 1303. [2020-09-25 04:31:35,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1303 states. [2020-09-25 04:31:35,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1303 states to 1303 states and 1548 transitions. [2020-09-25 04:31:35,677 INFO L78 Accepts]: Start accepts. Automaton has 1303 states and 1548 transitions. Word has length 128 [2020-09-25 04:31:35,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:31:35,677 INFO L479 AbstractCegarLoop]: Abstraction has 1303 states and 1548 transitions. [2020-09-25 04:31:35,678 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:31:35,678 INFO L276 IsEmpty]: Start isEmpty. Operand 1303 states and 1548 transitions. [2020-09-25 04:31:35,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-09-25 04:31:35,682 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:35,682 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 04:31:35,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:31:35,683 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:35,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:35,684 INFO L82 PathProgramCache]: Analyzing trace with hash -1479988716, now seen corresponding path program 1 times [2020-09-25 04:31:35,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:35,684 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1890094191] [2020-09-25 04:31:35,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:35,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:35,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:36,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:36,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:36,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:36,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:36,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:39,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:39,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:40,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:40,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:40,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-09-25 04:31:40,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 04:31:40,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 04:31:40,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:40,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:40,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:40,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-25 04:31:40,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 04:31:40,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:40,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:31:40,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:40,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:40,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:40,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:31:40,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:40,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 04:31:40,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:40,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:40,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:31:40,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:40,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:31:40,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:40,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:31:40,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:40,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:40,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:40,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 04:31:40,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:40,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-25 04:31:40,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:40,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:40,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:31:40,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:40,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 04:31:40,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:41,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 04:31:41,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:41,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:41,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:41,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 04:31:41,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:41,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-09-25 04:31:41,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:41,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:41,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:41,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:31:41,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 04:31:41,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:41,262 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 118 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:31:41,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1890094191] [2020-09-25 04:31:41,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:31:41,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:31:41,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256441170] [2020-09-25 04:31:41,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:31:41,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:31:41,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:31:41,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:31:41,265 INFO L87 Difference]: Start difference. First operand 1303 states and 1548 transitions. Second operand 7 states. [2020-09-25 04:31:43,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:31:43,788 INFO L93 Difference]: Finished difference Result 2945 states and 3616 transitions. [2020-09-25 04:31:43,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 04:31:43,789 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 209 [2020-09-25 04:31:43,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:31:43,798 INFO L225 Difference]: With dead ends: 2945 [2020-09-25 04:31:43,798 INFO L226 Difference]: Without dead ends: 1491 [2020-09-25 04:31:43,804 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 04:31:43,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1491 states. [2020-09-25 04:31:43,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1491 to 1459. [2020-09-25 04:31:43,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1459 states. [2020-09-25 04:31:43,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1459 states to 1459 states and 1696 transitions. [2020-09-25 04:31:43,850 INFO L78 Accepts]: Start accepts. Automaton has 1459 states and 1696 transitions. Word has length 209 [2020-09-25 04:31:43,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:31:43,850 INFO L479 AbstractCegarLoop]: Abstraction has 1459 states and 1696 transitions. [2020-09-25 04:31:43,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:31:43,851 INFO L276 IsEmpty]: Start isEmpty. Operand 1459 states and 1696 transitions. [2020-09-25 04:31:43,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-09-25 04:31:43,854 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:43,855 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 04:31:43,855 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:31:43,855 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:43,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:43,856 INFO L82 PathProgramCache]: Analyzing trace with hash 1354306761, now seen corresponding path program 1 times [2020-09-25 04:31:43,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:43,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1340063262] [2020-09-25 04:31:43,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:43,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:43,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:44,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:44,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:45,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:45,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:48,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:48,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:48,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-09-25 04:31:48,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:31:48,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4377 [2020-09-25 04:31:48,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:48,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:48,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:48,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-25 04:31:48,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-25 04:31:48,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:48,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:31:48,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:48,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:48,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:48,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:31:48,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:48,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:31:48,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:48,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:48,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:31:48,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:48,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:31:48,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:48,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:31:48,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:48,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:48,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:48,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 04:31:48,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:48,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-25 04:31:48,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:48,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:48,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:31:48,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:48,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 04:31:48,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:48,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 04:31:48,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:48,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:48,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:48,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-25 04:31:48,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:48,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-09-25 04:31:48,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:48,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:48,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:48,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:31:48,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 04:31:48,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:48,800 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 115 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:31:48,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1340063262] [2020-09-25 04:31:48,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:31:48,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:31:48,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974001568] [2020-09-25 04:31:48,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:31:48,803 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:31:48,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:31:48,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:31:48,803 INFO L87 Difference]: Start difference. First operand 1459 states and 1696 transitions. Second operand 7 states. [2020-09-25 04:31:51,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:31:51,143 INFO L93 Difference]: Finished difference Result 3257 states and 3919 transitions. [2020-09-25 04:31:51,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 04:31:51,144 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 214 [2020-09-25 04:31:51,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:31:51,153 INFO L225 Difference]: With dead ends: 3257 [2020-09-25 04:31:51,154 INFO L226 Difference]: Without dead ends: 1795 [2020-09-25 04:31:51,158 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:31:51,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1795 states. [2020-09-25 04:31:51,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1795 to 1767. [2020-09-25 04:31:51,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1767 states. [2020-09-25 04:31:51,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1767 states to 1767 states and 2111 transitions. [2020-09-25 04:31:51,223 INFO L78 Accepts]: Start accepts. Automaton has 1767 states and 2111 transitions. Word has length 214 [2020-09-25 04:31:51,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:31:51,223 INFO L479 AbstractCegarLoop]: Abstraction has 1767 states and 2111 transitions. [2020-09-25 04:31:51,223 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:31:51,224 INFO L276 IsEmpty]: Start isEmpty. Operand 1767 states and 2111 transitions. [2020-09-25 04:31:51,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2020-09-25 04:31:51,229 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:51,229 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 04:31:51,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 04:31:51,230 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:51,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:51,230 INFO L82 PathProgramCache]: Analyzing trace with hash -1357596281, now seen corresponding path program 1 times [2020-09-25 04:31:51,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:51,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1982937664] [2020-09-25 04:31:51,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:51,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:51,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:51,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:51,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:53,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:53,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:54,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:55,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:56,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:56,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 280 [2020-09-25 04:31:56,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:31:56,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 04:31:56,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:56,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:56,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:56,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-25 04:31:56,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-09-25 04:31:56,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:56,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:31:56,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:56,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:56,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:56,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:31:56,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:56,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 04:31:56,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:56,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:56,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:31:56,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:56,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:31:56,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 04:31:56,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:31:56,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:56,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:56,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:56,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 04:31:56,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:56,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-25 04:31:56,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:56,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:56,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:31:56,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:56,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 04:31:56,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:56,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 04:31:56,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:56,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:56,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:56,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-25 04:31:56,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:56,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-09-25 04:31:56,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:56,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:56,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:56,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:31:56,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-09-25 04:31:56,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:56,963 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 115 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:31:56,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1982937664] [2020-09-25 04:31:56,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:31:56,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:31:56,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524682250] [2020-09-25 04:31:56,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:31:56,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:31:56,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:31:56,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:31:56,966 INFO L87 Difference]: Start difference. First operand 1767 states and 2111 transitions. Second operand 7 states.