/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem05_label38.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 01:22:40,608 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 01:22:40,611 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 01:22:40,635 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 01:22:40,635 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 01:22:40,636 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 01:22:40,637 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 01:22:40,639 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 01:22:40,641 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 01:22:40,641 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 01:22:40,642 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 01:22:40,644 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 01:22:40,644 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 01:22:40,645 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 01:22:40,646 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 01:22:40,647 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 01:22:40,648 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 01:22:40,648 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 01:22:40,650 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 01:22:40,652 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 01:22:40,653 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 01:22:40,654 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 01:22:40,655 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 01:22:40,656 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 01:22:40,658 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 01:22:40,659 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 01:22:40,659 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 01:22:40,660 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 01:22:40,663 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 01:22:40,664 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 01:22:40,664 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 01:22:40,665 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 01:22:40,665 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 01:22:40,666 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 01:22:40,667 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 01:22:40,667 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 01:22:40,668 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 01:22:40,670 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 01:22:40,670 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 01:22:40,671 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 01:22:40,672 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 01:22:40,673 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 01:22:40,721 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 01:22:40,722 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 01:22:40,723 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 01:22:40,723 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 01:22:40,723 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 01:22:40,723 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 01:22:40,724 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 01:22:40,724 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 01:22:40,726 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 01:22:40,726 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 01:22:40,726 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 01:22:40,727 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 01:22:40,727 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 01:22:40,727 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 01:22:40,727 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 01:22:40,727 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 01:22:40,728 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 01:22:40,728 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 01:22:40,728 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 01:22:40,728 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 01:22:40,728 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 01:22:40,728 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 01:22:40,729 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 01:22:40,731 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 01:22:40,732 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 01:22:40,732 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 01:22:40,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 01:22:40,732 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 01:22:40,732 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 01:22:40,733 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 01:22:41,048 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 01:22:41,069 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 01:22:41,072 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 01:22:41,074 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 01:22:41,075 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 01:22:41,075 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label38.c [2020-10-14 01:22:41,135 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/76aa102fd/0576e0a8930c442fa87c56912bb8d1dd/FLAG2cdd104d4 [2020-10-14 01:22:42,003 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 01:22:42,003 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label38.c [2020-10-14 01:22:42,051 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/76aa102fd/0576e0a8930c442fa87c56912bb8d1dd/FLAG2cdd104d4 [2020-10-14 01:22:42,509 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/76aa102fd/0576e0a8930c442fa87c56912bb8d1dd [2020-10-14 01:22:42,518 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 01:22:42,520 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 01:22:42,522 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 01:22:42,522 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 01:22:42,525 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 01:22:42,526 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:22:42" (1/1) ... [2020-10-14 01:22:42,529 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ac45341 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:22:42, skipping insertion in model container [2020-10-14 01:22:42,530 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:22:42" (1/1) ... [2020-10-14 01:22:42,538 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 01:22:42,819 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 01:22:45,255 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 01:22:45,264 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 01:22:46,401 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 01:22:46,469 INFO L208 MainTranslator]: Completed translation [2020-10-14 01:22:46,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:22:46 WrapperNode [2020-10-14 01:22:46,470 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 01:22:46,471 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 01:22:46,471 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 01:22:46,471 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 01:22:46,486 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:22:46" (1/1) ... [2020-10-14 01:22:46,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:22:46" (1/1) ... [2020-10-14 01:22:46,589 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:22:46" (1/1) ... [2020-10-14 01:22:46,590 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:22:46" (1/1) ... [2020-10-14 01:22:46,820 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:22:46" (1/1) ... [2020-10-14 01:22:46,904 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:22:46" (1/1) ... [2020-10-14 01:22:47,118 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:22:46" (1/1) ... [2020-10-14 01:22:47,202 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 01:22:47,203 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 01:22:47,203 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 01:22:47,203 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 01:22:47,204 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:22:46" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 01:22:47,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 01:22:47,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 01:22:47,282 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 01:22:47,282 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 01:22:47,282 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 01:22:47,282 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 01:22:47,282 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-14 01:22:47,284 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-14 01:22:47,284 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-14 01:22:47,284 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-14 01:22:47,284 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 01:22:47,284 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 01:22:47,284 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 01:22:47,285 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 01:22:47,285 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 01:22:47,286 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-14 01:22:47,286 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-14 01:22:47,286 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-14 01:22:47,286 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-14 01:22:47,287 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 01:22:47,287 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 01:22:47,287 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 01:22:47,288 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 01:22:47,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 01:22:47,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 01:22:56,028 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 01:22:56,029 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 01:22:56,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:22:56 BoogieIcfgContainer [2020-10-14 01:22:56,046 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 01:22:56,047 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 01:22:56,047 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 01:22:56,051 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 01:22:56,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 01:22:42" (1/3) ... [2020-10-14 01:22:56,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d1f31df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:22:56, skipping insertion in model container [2020-10-14 01:22:56,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:22:46" (2/3) ... [2020-10-14 01:22:56,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d1f31df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:22:56, skipping insertion in model container [2020-10-14 01:22:56,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:22:56" (3/3) ... [2020-10-14 01:22:56,054 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem05_label38.c [2020-10-14 01:22:56,065 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 01:22:56,074 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 01:22:56,089 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 01:22:56,122 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 01:22:56,122 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 01:22:56,122 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 01:22:56,123 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 01:22:56,123 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 01:22:56,123 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 01:22:56,123 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 01:22:56,123 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 01:22:56,176 INFO L276 IsEmpty]: Start isEmpty. Operand 2222 states. [2020-10-14 01:22:56,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1654 [2020-10-14 01:22:56,283 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:22:56,285 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:22:56,286 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:22:56,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:22:56,293 INFO L82 PathProgramCache]: Analyzing trace with hash -53053368, now seen corresponding path program 1 times [2020-10-14 01:22:56,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:22:56,302 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [175510325] [2020-10-14 01:22:56,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:22:57,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:22:58,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:23:02,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:23:02,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1675 [2020-10-14 01:23:02,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:23:02,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5175 [2020-10-14 01:23:02,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:23:02,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:23:02,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 01:23:02,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:23:02,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1669 [2020-10-14 01:23:02,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 01:23:04,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:23:04,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:23:04,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:23:04,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:23:04,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:23:04,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:23:04,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 01:23:04,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:23:04,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:23:04,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:23:04,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:23:04,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:23:04,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 01:23:06,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:23:06,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [175510325] [2020-10-14 01:23:06,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:23:06,139 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 01:23:06,140 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237358786] [2020-10-14 01:23:06,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 01:23:06,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:23:06,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 01:23:06,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 01:23:06,168 INFO L87 Difference]: Start difference. First operand 2222 states. Second operand 4 states. [2020-10-14 01:23:22,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:23:22,794 INFO L93 Difference]: Finished difference Result 6311 states and 11851 transitions. [2020-10-14 01:23:22,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 01:23:22,797 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1653 [2020-10-14 01:23:22,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:23:22,858 INFO L225 Difference]: With dead ends: 6311 [2020-10-14 01:23:22,858 INFO L226 Difference]: Without dead ends: 4025 [2020-10-14 01:23:22,871 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 01:23:22,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4025 states. [2020-10-14 01:23:23,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4025 to 3996. [2020-10-14 01:23:23,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3996 states. [2020-10-14 01:23:23,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3996 states to 3996 states and 6427 transitions. [2020-10-14 01:23:23,131 INFO L78 Accepts]: Start accepts. Automaton has 3996 states and 6427 transitions. Word has length 1653 [2020-10-14 01:23:23,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:23:23,136 INFO L479 AbstractCegarLoop]: Abstraction has 3996 states and 6427 transitions. [2020-10-14 01:23:23,136 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 01:23:23,136 INFO L276 IsEmpty]: Start isEmpty. Operand 3996 states and 6427 transitions. [2020-10-14 01:23:23,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1663 [2020-10-14 01:23:23,317 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:23:23,318 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:23:23,319 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 01:23:23,319 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:23:23,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:23:23,320 INFO L82 PathProgramCache]: Analyzing trace with hash 421797555, now seen corresponding path program 1 times [2020-10-14 01:23:23,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:23:23,321 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [313143809] [2020-10-14 01:23:23,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:23:23,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:23:23,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:23:26,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:23:28,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:23:28,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1686 [2020-10-14 01:23:28,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:23:28,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 01:23:28,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:23:28,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:23:28,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:23:28,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:23:28,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 01:23:28,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 01:23:29,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:23:29,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:23:29,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:23:29,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:23:29,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:23:29,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:23:29,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 01:23:29,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:23:29,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:23:29,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:23:29,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:23:29,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:23:29,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-14 01:23:29,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:23:29,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:23:29,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:23:29,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:23:29,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 01:23:29,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:23:29,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 01:23:29,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:23:29,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:23:29,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:23:29,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:23:29,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 01:23:29,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 01:23:31,039 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:23:31,040 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [313143809] [2020-10-14 01:23:31,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:23:31,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 01:23:31,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396104733] [2020-10-14 01:23:31,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:23:31,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:23:31,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:23:31,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:23:31,048 INFO L87 Difference]: Start difference. First operand 3996 states and 6427 transitions. Second operand 7 states. [2020-10-14 01:23:52,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:23:52,003 INFO L93 Difference]: Finished difference Result 11689 states and 18997 transitions. [2020-10-14 01:23:52,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 01:23:52,004 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1662 [2020-10-14 01:23:52,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:23:52,048 INFO L225 Difference]: With dead ends: 11689 [2020-10-14 01:23:52,049 INFO L226 Difference]: Without dead ends: 7699 [2020-10-14 01:23:52,059 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:23:52,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7699 states. [2020-10-14 01:23:52,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7699 to 7632. [2020-10-14 01:23:52,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7632 states. [2020-10-14 01:23:52,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7632 states to 7632 states and 11192 transitions. [2020-10-14 01:23:52,310 INFO L78 Accepts]: Start accepts. Automaton has 7632 states and 11192 transitions. Word has length 1662 [2020-10-14 01:23:52,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:23:52,311 INFO L479 AbstractCegarLoop]: Abstraction has 7632 states and 11192 transitions. [2020-10-14 01:23:52,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:23:52,311 INFO L276 IsEmpty]: Start isEmpty. Operand 7632 states and 11192 transitions. [2020-10-14 01:23:52,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1665 [2020-10-14 01:23:52,442 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:23:52,444 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:23:52,444 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 01:23:52,444 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:23:52,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:23:52,445 INFO L82 PathProgramCache]: Analyzing trace with hash -1783204777, now seen corresponding path program 1 times [2020-10-14 01:23:52,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:23:52,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2085898534] [2020-10-14 01:23:52,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:23:52,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:23:53,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:23:53,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:23:57,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:23:57,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1688 [2020-10-14 01:23:57,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:23:57,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5131 [2020-10-14 01:23:57,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:23:57,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:23:57,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:23:57,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:23:57,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 01:23:57,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:23:58,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:23:58,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:23:58,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:23:58,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:23:58,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:23:58,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:23:58,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 01:23:58,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:23:58,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:23:58,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:23:58,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:23:58,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:23:58,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 01:23:58,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:23:58,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:23:58,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:23:58,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:23:58,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 01:23:58,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:23:58,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 01:23:58,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:23:58,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:23:58,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:23:58,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:23:58,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 01:23:58,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:23:59,672 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:23:59,672 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2085898534] [2020-10-14 01:23:59,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:23:59,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 01:23:59,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591556273] [2020-10-14 01:23:59,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:23:59,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:23:59,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:23:59,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:23:59,677 INFO L87 Difference]: Start difference. First operand 7632 states and 11192 transitions. Second operand 7 states. [2020-10-14 01:24:22,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:24:22,306 INFO L93 Difference]: Finished difference Result 22952 states and 34555 transitions. [2020-10-14 01:24:22,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 01:24:22,307 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1664 [2020-10-14 01:24:22,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:24:22,383 INFO L225 Difference]: With dead ends: 22952 [2020-10-14 01:24:22,383 INFO L226 Difference]: Without dead ends: 15326 [2020-10-14 01:24:22,492 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:24:22,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15326 states. [2020-10-14 01:24:22,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15326 to 15150. [2020-10-14 01:24:22,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15150 states. [2020-10-14 01:24:22,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15150 states to 15150 states and 20787 transitions. [2020-10-14 01:24:22,907 INFO L78 Accepts]: Start accepts. Automaton has 15150 states and 20787 transitions. Word has length 1664 [2020-10-14 01:24:22,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:24:22,908 INFO L479 AbstractCegarLoop]: Abstraction has 15150 states and 20787 transitions. [2020-10-14 01:24:22,908 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:24:22,908 INFO L276 IsEmpty]: Start isEmpty. Operand 15150 states and 20787 transitions. [2020-10-14 01:24:22,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1676 [2020-10-14 01:24:22,987 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:24:22,988 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:24:22,989 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 01:24:22,989 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:24:22,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:24:22,990 INFO L82 PathProgramCache]: Analyzing trace with hash -370367993, now seen corresponding path program 1 times [2020-10-14 01:24:22,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:24:22,990 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1198149440] [2020-10-14 01:24:22,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:24:23,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:24:23,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:24:24,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:24:27,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:24:28,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:24:28,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1699 [2020-10-14 01:24:28,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 01:24:28,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5096 [2020-10-14 01:24:28,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:24:28,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:24:28,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:24:28,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:24:28,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 01:24:28,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:24:28,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:24:28,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:24:28,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:24:28,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:24:28,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:24:28,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:24:28,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 01:24:28,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:24:28,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:24:28,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:24:28,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:24:28,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:24:28,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:24:28,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:24:28,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:24:28,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:24:28,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:24:28,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 01:24:28,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:24:28,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-14 01:24:28,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:24:28,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:24:28,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:24:28,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:24:28,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 01:24:28,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:24:30,538 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:24:30,539 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1198149440] [2020-10-14 01:24:30,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:24:30,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 01:24:30,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229695522] [2020-10-14 01:24:30,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 01:24:30,542 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:24:30,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 01:24:30,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 01:24:30,543 INFO L87 Difference]: Start difference. First operand 15150 states and 20787 transitions. Second operand 8 states. [2020-10-14 01:25:10,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:25:10,079 INFO L93 Difference]: Finished difference Result 60661 states and 90808 transitions. [2020-10-14 01:25:10,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 01:25:10,084 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1675 [2020-10-14 01:25:10,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:25:10,277 INFO L225 Difference]: With dead ends: 60661 [2020-10-14 01:25:10,278 INFO L226 Difference]: Without dead ends: 45517 [2020-10-14 01:25:10,339 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-14 01:25:10,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45517 states. [2020-10-14 01:25:11,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45517 to 45198. [2020-10-14 01:25:11,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45198 states. [2020-10-14 01:25:11,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45198 states to 45198 states and 63660 transitions. [2020-10-14 01:25:11,488 INFO L78 Accepts]: Start accepts. Automaton has 45198 states and 63660 transitions. Word has length 1675 [2020-10-14 01:25:11,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:25:11,488 INFO L479 AbstractCegarLoop]: Abstraction has 45198 states and 63660 transitions. [2020-10-14 01:25:11,489 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 01:25:11,489 INFO L276 IsEmpty]: Start isEmpty. Operand 45198 states and 63660 transitions. [2020-10-14 01:25:11,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1709 [2020-10-14 01:25:11,681 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:25:11,683 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:25:11,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 01:25:11,683 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:25:11,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:25:11,684 INFO L82 PathProgramCache]: Analyzing trace with hash 1645948268, now seen corresponding path program 1 times [2020-10-14 01:25:11,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:25:11,685 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [47033607] [2020-10-14 01:25:11,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:25:11,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:25:11,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:25:11,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:25:12,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:25:16,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:25:16,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1734 [2020-10-14 01:25:16,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 01:25:16,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-14 01:25:16,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:25:16,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:25:16,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:25:16,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-14 01:25:16,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 01:25:16,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 01:25:17,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:25:17,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:25:17,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:25:17,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:25:17,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:25:17,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:25:17,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 01:25:17,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:25:17,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:25:17,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:25:17,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:25:17,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:25:17,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:25:17,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:25:17,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:25:17,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:25:17,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:25:17,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-14 01:25:17,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:25:17,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-14 01:25:17,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:25:17,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:25:17,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:25:17,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:25:17,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 01:25:17,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:25:17,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-14 01:25:17,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:25:17,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:25:17,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:25:17,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:25:17,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 01:25:17,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:25:17,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 01:25:17,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:25:17,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:25:17,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:25:17,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:25:17,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 01:25:17,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 01:25:18,551 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 57 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 01:25:18,552 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [47033607] [2020-10-14 01:25:18,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:25:18,552 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:25:18,552 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943680864] [2020-10-14 01:25:18,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:25:18,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:25:18,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:25:18,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:25:18,554 INFO L87 Difference]: Start difference. First operand 45198 states and 63660 transitions. Second operand 7 states. [2020-10-14 01:25:53,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:25:53,597 INFO L93 Difference]: Finished difference Result 135896 states and 209838 transitions. [2020-10-14 01:25:53,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 01:25:53,599 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1708 [2020-10-14 01:25:53,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:25:53,968 INFO L225 Difference]: With dead ends: 135896 [2020-10-14 01:25:53,968 INFO L226 Difference]: Without dead ends: 90704 [2020-10-14 01:25:54,086 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:25:54,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90704 states. [2020-10-14 01:25:56,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90704 to 90603. [2020-10-14 01:25:56,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90603 states. [2020-10-14 01:25:59,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90603 states to 90603 states and 134946 transitions. [2020-10-14 01:25:59,715 INFO L78 Accepts]: Start accepts. Automaton has 90603 states and 134946 transitions. Word has length 1708 [2020-10-14 01:25:59,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:25:59,716 INFO L479 AbstractCegarLoop]: Abstraction has 90603 states and 134946 transitions. [2020-10-14 01:25:59,716 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:25:59,716 INFO L276 IsEmpty]: Start isEmpty. Operand 90603 states and 134946 transitions. [2020-10-14 01:26:00,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1725 [2020-10-14 01:26:00,052 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:26:00,053 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:26:00,054 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 01:26:00,054 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:26:00,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:26:00,055 INFO L82 PathProgramCache]: Analyzing trace with hash -80963915, now seen corresponding path program 1 times [2020-10-14 01:26:00,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:26:00,056 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1416698649] [2020-10-14 01:26:00,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:26:00,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:26:00,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:26:00,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:26:00,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:26:01,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:26:03,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:26:05,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:26:05,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1750 [2020-10-14 01:26:05,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 01:26:05,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5079 [2020-10-14 01:26:05,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:26:05,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:26:05,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:26:05,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-14 01:26:05,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 01:26:05,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:26:05,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:26:05,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:26:05,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:26:05,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:26:05,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:26:05,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:26:05,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 01:26:05,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:26:05,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:26:05,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:26:05,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:26:05,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:26:05,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:26:05,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:26:05,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:26:05,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:26:05,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:26:05,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-14 01:26:05,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:26:05,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-14 01:26:05,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:26:05,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:26:05,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:26:05,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:26:05,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 01:26:05,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:26:05,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-14 01:26:05,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:26:05,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:26:05,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:26:05,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 01:26:05,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:26:05,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-14 01:26:05,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:26:05,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:26:05,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:26:05,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:26:05,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 01:26:05,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:26:08,257 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 89 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 01:26:08,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1416698649] [2020-10-14 01:26:08,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:26:08,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:26:08,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424000541] [2020-10-14 01:26:08,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:26:08,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:26:08,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:26:08,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:26:08,260 INFO L87 Difference]: Start difference. First operand 90603 states and 134946 transitions. Second operand 7 states.