/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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/Problem06_label38.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 19:59:48,994 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 19:59:48,997 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 19:59:49,036 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 19:59:49,036 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 19:59:49,044 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 19:59:49,046 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 19:59:49,049 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 19:59:49,051 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 19:59:49,054 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 19:59:49,055 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 19:59:49,055 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 19:59:49,056 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 19:59:49,058 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 19:59:49,060 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 19:59:49,061 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 19:59:49,063 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 19:59:49,064 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 19:59:49,065 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 19:59:49,072 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 19:59:49,074 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 19:59:49,075 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 19:59:49,076 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 19:59:49,076 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 19:59:49,088 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 19:59:49,088 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 19:59:49,088 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 19:59:49,094 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 19:59:49,095 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 19:59:49,095 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 19:59:49,096 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 19:59:49,099 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 19:59:49,100 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 19:59:49,101 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 19:59:49,101 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 19:59:49,102 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 19:59:49,104 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 19:59:49,104 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 19:59:49,105 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 19:59:49,106 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 19:59:49,106 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 19:59:49,107 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 19:59:49,145 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 19:59:49,145 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 19:59:49,147 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 19:59:49,147 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 19:59:49,147 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 19:59:49,147 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 19:59:49,148 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 19:59:49,148 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 19:59:49,148 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 19:59:49,148 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 19:59:49,149 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 19:59:49,150 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 19:59:49,150 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 19:59:49,150 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 19:59:49,150 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 19:59:49,150 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 19:59:49,151 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 19:59:49,151 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 19:59:49,151 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 19:59:49,151 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 19:59:49,152 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 19:59:49,152 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 19:59:49,152 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 19:59:49,152 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 19:59:49,152 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 19:59:49,153 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 19:59:49,153 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 19:59:49,153 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 19:59:49,153 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 19:59:49,153 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 19:59:49,453 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 19:59:49,464 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 19:59:49,467 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 19:59:49,469 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 19:59:49,469 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 19:59:49,470 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label38.c [2020-10-14 19:59:49,527 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/726188774/cfb5286ba5a34b5e81f5c1ea3dba1d79/FLAGa20e8e309 [2020-10-14 19:59:50,391 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 19:59:50,392 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label38.c [2020-10-14 19:59:50,436 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/726188774/cfb5286ba5a34b5e81f5c1ea3dba1d79/FLAGa20e8e309 [2020-10-14 19:59:50,776 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/726188774/cfb5286ba5a34b5e81f5c1ea3dba1d79 [2020-10-14 19:59:50,788 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 19:59:50,790 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 19:59:50,793 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 19:59:50,793 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 19:59:50,797 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 19:59:50,798 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:59:50" (1/1) ... [2020-10-14 19:59:50,801 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15d64021 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:59:50, skipping insertion in model container [2020-10-14 19:59:50,801 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:59:50" (1/1) ... [2020-10-14 19:59:50,809 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 19:59:51,101 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 19:59:53,204 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:59:53,214 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 19:59:54,200 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:59:54,251 INFO L208 MainTranslator]: Completed translation [2020-10-14 19:59:54,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:59:54 WrapperNode [2020-10-14 19:59:54,252 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 19:59:54,253 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 19:59:54,253 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 19:59:54,253 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 19:59:54,267 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:59:54" (1/1) ... [2020-10-14 19:59:54,267 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:59:54" (1/1) ... [2020-10-14 19:59:54,320 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:59:54" (1/1) ... [2020-10-14 19:59:54,321 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:59:54" (1/1) ... [2020-10-14 19:59:54,476 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:59:54" (1/1) ... [2020-10-14 19:59:54,508 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:59:54" (1/1) ... [2020-10-14 19:59:54,572 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:59:54" (1/1) ... [2020-10-14 19:59:54,645 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 19:59:54,645 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 19:59:54,645 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 19:59:54,646 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 19:59:54,647 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:59:54" (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 19:59:54,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 19:59:54,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 19:59:54,720 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 19:59:54,721 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 19:59:54,721 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 19:59:54,721 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 19:59:54,721 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-14 19:59:54,721 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 19:59:54,721 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 19:59:54,722 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 19:59:54,722 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 19:59:54,722 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 19:59:54,722 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-14 19:59:54,722 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 19:59:54,722 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 19:59:54,723 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 19:59:54,723 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 19:59:54,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 19:59:54,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 20:00:01,569 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 20:00:01,569 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 20:00:01,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:00:01 BoogieIcfgContainer [2020-10-14 20:00:01,583 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 20:00:01,584 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 20:00:01,584 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 20:00:01,587 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 20:00:01,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:59:50" (1/3) ... [2020-10-14 20:00:01,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f9ea541 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:00:01, skipping insertion in model container [2020-10-14 20:00:01,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:59:54" (2/3) ... [2020-10-14 20:00:01,589 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f9ea541 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:00:01, skipping insertion in model container [2020-10-14 20:00:01,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:00:01" (3/3) ... [2020-10-14 20:00:01,591 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem06_label38.c [2020-10-14 20:00:01,600 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 20:00:01,609 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 20:00:01,620 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 20:00:01,647 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 20:00:01,648 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 20:00:01,648 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 20:00:01,648 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 20:00:01,648 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 20:00:01,648 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 20:00:01,648 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 20:00:01,648 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 20:00:01,686 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states. [2020-10-14 20:00:01,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 953 [2020-10-14 20:00:01,755 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:00:01,757 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] [2020-10-14 20:00:01,758 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:00:01,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:00:01,765 INFO L82 PathProgramCache]: Analyzing trace with hash 1827906359, now seen corresponding path program 1 times [2020-10-14 20:00:01,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:00:01,776 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1360989685] [2020-10-14 20:00:01,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:00:02,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:00:03,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:00:04,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:00:07,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:00:07,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 968 [2020-10-14 20:00:07,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 20:00:07,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-14 20:00:07,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:00:07,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:00:07,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 20:00:07,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 20:00:07,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 962 [2020-10-14 20:00:07,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 20:00:08,859 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 20:00:08,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:00:08,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:00:08,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:00:08,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:00:08,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:00:08,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:00:08,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 20:00:08,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:00:08,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:00:08,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:00:08,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:00:08,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 20:00:08,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:00:09,824 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 20:00:09,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1360989685] [2020-10-14 20:00:09,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 20:00:09,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 20:00:09,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824760760] [2020-10-14 20:00:09,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 20:00:09,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:00:09,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 20:00:09,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 20:00:09,849 INFO L87 Difference]: Start difference. First operand 1315 states. Second operand 4 states. [2020-10-14 20:00:10,025 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 20:00:22,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:00:22,664 INFO L93 Difference]: Finished difference Result 3765 states and 7006 transitions. [2020-10-14 20:00:22,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 20:00:22,666 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 952 [2020-10-14 20:00:22,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:00:22,709 INFO L225 Difference]: With dead ends: 3765 [2020-10-14 20:00:22,710 INFO L226 Difference]: Without dead ends: 2386 [2020-10-14 20:00:22,721 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 20:00:22,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2386 states. [2020-10-14 20:00:22,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2386 to 2373. [2020-10-14 20:00:22,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2373 states. [2020-10-14 20:00:22,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2373 states to 2373 states and 3971 transitions. [2020-10-14 20:00:22,926 INFO L78 Accepts]: Start accepts. Automaton has 2373 states and 3971 transitions. Word has length 952 [2020-10-14 20:00:22,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:00:22,929 INFO L479 AbstractCegarLoop]: Abstraction has 2373 states and 3971 transitions. [2020-10-14 20:00:22,929 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 20:00:22,929 INFO L276 IsEmpty]: Start isEmpty. Operand 2373 states and 3971 transitions. [2020-10-14 20:00:23,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 965 [2020-10-14 20:00:23,013 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:00:23,014 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:00:23,014 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 20:00:23,015 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:00:23,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:00:23,015 INFO L82 PathProgramCache]: Analyzing trace with hash 882588634, now seen corresponding path program 1 times [2020-10-14 20:00:23,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:00:23,016 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [550019424] [2020-10-14 20:00:23,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:00:23,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:00:23,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:00:24,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:00:28,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:00:28,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 982 [2020-10-14 20:00:28,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 20:00:28,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 20:00:28,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:00:28,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:00:28,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 20:00:28,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 20:00:28,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 959 [2020-10-14 20:00:28,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:00:29,134 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 20:00:29,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:00:29,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:00:29,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:00:29,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:00:29,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:00:29,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:00:29,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 20:00:29,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:00:29,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:00:29,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:00:29,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:00:29,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:00:29,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:00:29,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:00:29,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:00:29,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:00:29,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:00:29,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 20:00:29,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:00:29,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 20:00:29,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:00:29,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:00:29,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:00:29,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:00:29,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 20:00:29,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:00:30,314 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 20:00:30,314 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [550019424] [2020-10-14 20:00:30,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:00:30,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 20:00:30,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666509387] [2020-10-14 20:00:30,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 20:00:30,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:00:30,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 20:00:30,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 20:00:30,319 INFO L87 Difference]: Start difference. First operand 2373 states and 3971 transitions. Second operand 6 states. [2020-10-14 20:00:30,447 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 20:00:30,656 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 20:00:50,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:00:50,982 INFO L93 Difference]: Finished difference Result 9001 states and 15409 transitions. [2020-10-14 20:00:50,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 20:00:50,986 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 964 [2020-10-14 20:00:50,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:00:51,026 INFO L225 Difference]: With dead ends: 9001 [2020-10-14 20:00:51,026 INFO L226 Difference]: Without dead ends: 6634 [2020-10-14 20:00:51,035 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 20:00:51,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6634 states. [2020-10-14 20:00:51,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6634 to 6531. [2020-10-14 20:00:51,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6531 states. [2020-10-14 20:00:51,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6531 states to 6531 states and 10378 transitions. [2020-10-14 20:00:51,230 INFO L78 Accepts]: Start accepts. Automaton has 6531 states and 10378 transitions. Word has length 964 [2020-10-14 20:00:51,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:00:51,231 INFO L479 AbstractCegarLoop]: Abstraction has 6531 states and 10378 transitions. [2020-10-14 20:00:51,232 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 20:00:51,232 INFO L276 IsEmpty]: Start isEmpty. Operand 6531 states and 10378 transitions. [2020-10-14 20:00:51,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 969 [2020-10-14 20:00:51,264 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:00:51,265 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 20:00:51,265 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 20:00:51,266 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:00:51,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:00:51,266 INFO L82 PathProgramCache]: Analyzing trace with hash -686184366, now seen corresponding path program 1 times [2020-10-14 20:00:51,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:00:51,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1291211273] [2020-10-14 20:00:51,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:00:51,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:00:51,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:00:52,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:00:56,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:00:56,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 986 [2020-10-14 20:00:56,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 20:00:56,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5133 [2020-10-14 20:00:56,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:00:56,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:00:56,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 20:00:56,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 20:00:56,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 960 [2020-10-14 20:00:56,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:00:57,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:00:57,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:00:57,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:00:57,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:00:57,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:00:57,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:00:57,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 20:00:57,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:00:57,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:00:57,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:00:57,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:00:57,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:00:57,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:00:58,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:00:58,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:00:58,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:00:58,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:00:58,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 20:00:58,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:00:58,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 20:00:58,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:00:58,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:00:58,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:00:58,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:00:58,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 20:00:58,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:00:59,054 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 20:00:59,055 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1291211273] [2020-10-14 20:00:59,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:00:59,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 20:00:59,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062216106] [2020-10-14 20:00:59,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 20:00:59,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:00:59,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 20:00:59,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 20:00:59,058 INFO L87 Difference]: Start difference. First operand 6531 states and 10378 transitions. Second operand 6 states. [2020-10-14 20:00:59,261 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 20:00:59,561 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 20:01:22,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:01:22,605 INFO L93 Difference]: Finished difference Result 25662 states and 42164 transitions. [2020-10-14 20:01:22,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 20:01:22,606 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 968 [2020-10-14 20:01:22,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:01:22,697 INFO L225 Difference]: With dead ends: 25662 [2020-10-14 20:01:22,698 INFO L226 Difference]: Without dead ends: 19137 [2020-10-14 20:01:22,824 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 20:01:22,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19137 states. [2020-10-14 20:01:23,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19137 to 19024. [2020-10-14 20:01:23,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19024 states. [2020-10-14 20:01:23,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19024 states to 19024 states and 29507 transitions. [2020-10-14 20:01:23,333 INFO L78 Accepts]: Start accepts. Automaton has 19024 states and 29507 transitions. Word has length 968 [2020-10-14 20:01:23,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:01:23,335 INFO L479 AbstractCegarLoop]: Abstraction has 19024 states and 29507 transitions. [2020-10-14 20:01:23,335 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 20:01:23,335 INFO L276 IsEmpty]: Start isEmpty. Operand 19024 states and 29507 transitions. [2020-10-14 20:01:23,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 974 [2020-10-14 20:01:23,404 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:01:23,405 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2020-10-14 20:01:23,405 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 20:01:23,405 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:01:23,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:01:23,413 INFO L82 PathProgramCache]: Analyzing trace with hash -2001332755, now seen corresponding path program 1 times [2020-10-14 20:01:23,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:01:23,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1017678421] [2020-10-14 20:01:23,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:01:23,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:01:23,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:01:23,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:01:28,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:01:28,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 993 [2020-10-14 20:01:28,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 20:01:28,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-14 20:01:28,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:01:28,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:01:28,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 20:01:28,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 20:01:28,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 20:01:28,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:01:28,969 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 20:01:28,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:01:28,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:01:28,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:01:28,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:01:28,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:01:28,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:01:28,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 20:01:28,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:01:28,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:01:28,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:01:28,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:01:28,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 20:01:28,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:01:29,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:01:29,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:01:29,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:01:29,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:01:29,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 20:01:29,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:01:29,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 20:01:29,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:01:29,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:01:29,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:01:29,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:01:29,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 20:01:29,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:01:29,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 20:01:29,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:01:29,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:01:29,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:01:29,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 20:01:29,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:01:29,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 20:01:29,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:01:29,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:01:29,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:01:29,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 20:01:29,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:01:29,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:01:29,901 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 20:01:29,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1017678421] [2020-10-14 20:01:29,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:01:29,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 20:01:29,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711472608] [2020-10-14 20:01:29,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 20:01:29,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:01:29,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 20:01:29,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 20:01:29,904 INFO L87 Difference]: Start difference. First operand 19024 states and 29507 transitions. Second operand 8 states. [2020-10-14 20:01:30,050 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-14 20:01:30,435 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-14 20:01:33,917 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 20:01:53,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:01:53,431 INFO L93 Difference]: Finished difference Result 76671 states and 131485 transitions. [2020-10-14 20:01:53,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 20:01:53,433 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 973 [2020-10-14 20:01:53,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:01:53,714 INFO L225 Difference]: With dead ends: 76671 [2020-10-14 20:01:53,714 INFO L226 Difference]: Without dead ends: 57653 [2020-10-14 20:01:53,787 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 20:01:53,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57653 states. [2020-10-14 20:01:55,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57653 to 57228. [2020-10-14 20:01:55,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57228 states. [2020-10-14 20:01:55,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57228 states to 57228 states and 93690 transitions. [2020-10-14 20:01:55,646 INFO L78 Accepts]: Start accepts. Automaton has 57228 states and 93690 transitions. Word has length 973 [2020-10-14 20:01:55,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:01:55,647 INFO L479 AbstractCegarLoop]: Abstraction has 57228 states and 93690 transitions. [2020-10-14 20:01:55,647 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 20:01:55,647 INFO L276 IsEmpty]: Start isEmpty. Operand 57228 states and 93690 transitions. [2020-10-14 20:01:55,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 982 [2020-10-14 20:01:55,835 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:01:55,836 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 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] [2020-10-14 20:01:55,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 20:01:55,837 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:01:55,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:01:55,837 INFO L82 PathProgramCache]: Analyzing trace with hash 1287765666, now seen corresponding path program 1 times [2020-10-14 20:01:55,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:01:55,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2096783424] [2020-10-14 20:01:55,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:01:55,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:01:57,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:01:57,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:01:57,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:02:00,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:02:01,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:02:01,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1003 [2020-10-14 20:02:01,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 20:02:01,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-14 20:02:01,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:02:01,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:02:01,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 20:02:01,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 20:02:01,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 20:02:01,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:02:01,320 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 20:02:01,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:02:01,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:02:01,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:02:01,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:02:01,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:02:01,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:02:01,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 20:02:01,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:02:01,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:02:01,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:02:01,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:02:01,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:02:01,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:02:01,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:02:01,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:02:01,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:02:01,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:02:01,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 20:02:01,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:02:01,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 20:02:01,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:02:01,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:02:01,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:02:01,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:02:01,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 20:02:01,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:02:01,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-14 20:02:01,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:02:01,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:02:01,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:02:01,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 20:02:01,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:02:01,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 20:02:01,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:02:01,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:02:01,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:02:01,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:02:01,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 20:02:01,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:02:01,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 20:02:01,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:02:01,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:02:01,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:02:01,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 20:02:01,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:02:01,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 20:02:01,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:02:01,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:02:01,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:02:01,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:02:01,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 20:02:01,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:02:02,031 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 30 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 20:02:02,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2096783424] [2020-10-14 20:02:02,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:02:02,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 20:02:02,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613257878] [2020-10-14 20:02:02,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 20:02:02,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:02:02,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 20:02:02,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 20:02:02,033 INFO L87 Difference]: Start difference. First operand 57228 states and 93690 transitions. Second operand 8 states. [2020-10-14 20:02:02,246 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 20:02:02,608 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 20:02:06,533 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 20:02:40,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:02:40,629 INFO L93 Difference]: Finished difference Result 268284 states and 491781 transitions. [2020-10-14 20:02:40,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 20:02:40,630 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 981 [2020-10-14 20:02:40,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:02:41,739 INFO L225 Difference]: With dead ends: 268284 [2020-10-14 20:02:41,739 INFO L226 Difference]: Without dead ends: 211062 [2020-10-14 20:02:41,876 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 20:02:42,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211062 states. [2020-10-14 20:02:49,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211062 to 210823. [2020-10-14 20:02:49,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210823 states. [2020-10-14 20:02:50,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210823 states to 210823 states and 370480 transitions. [2020-10-14 20:02:50,239 INFO L78 Accepts]: Start accepts. Automaton has 210823 states and 370480 transitions. Word has length 981 [2020-10-14 20:02:50,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:02:50,240 INFO L479 AbstractCegarLoop]: Abstraction has 210823 states and 370480 transitions. [2020-10-14 20:02:50,240 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 20:02:50,240 INFO L276 IsEmpty]: Start isEmpty. Operand 210823 states and 370480 transitions. [2020-10-14 20:02:51,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 990 [2020-10-14 20:02:51,018 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:02:51,019 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 20:02:51,019 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 20:02:51,019 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:02:51,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:02:51,020 INFO L82 PathProgramCache]: Analyzing trace with hash -1311171984, now seen corresponding path program 1 times [2020-10-14 20:02:51,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:02:51,020 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [247382154] [2020-10-14 20:02:51,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:02:51,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:02:51,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:02:51,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:02:51,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:02:52,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:02:57,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:02:57,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1011 [2020-10-14 20:02:57,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 20:02:57,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6275 [2020-10-14 20:02:57,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:02:57,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:02:57,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:02:57,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 20:02:57,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 20:02:57,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:02:57,705 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 20:02:57,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:02:57,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:02:57,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:02:57,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:02:57,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:02:57,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:02:57,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 20:02:57,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:02:57,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:02:57,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:02:57,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:02:57,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:02:57,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:02:57,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:02:57,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:02:57,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:02:57,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:02:57,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 20:02:57,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:02:57,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 20:02:57,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:02:57,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:02:57,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:02:57,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:02:57,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 20:02:57,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:02:57,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-14 20:02:57,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:02:57,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:02:57,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:02:57,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 20:02:57,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:02:57,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 20:02:57,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:02:57,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:02:57,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:02:57,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:02:57,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 20:02:57,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:02:57,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 20:02:57,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:02:57,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:02:57,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:02:57,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 20:02:57,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:02:57,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 20:02:57,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:02:57,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:02:57,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:02:57,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 20:02:57,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:02:57,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:02:58,305 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 39 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 20:02:58,305 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [247382154] [2020-10-14 20:02:58,305 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:02:58,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 20:02:58,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902075681] [2020-10-14 20:02:58,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 20:02:58,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:02:58,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 20:02:58,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 20:02:58,308 INFO L87 Difference]: Start difference. First operand 210823 states and 370480 transitions. Second operand 8 states. [2020-10-14 20:02:58,467 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 20:02:58,900 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 20:02:59,209 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-14 20:03:27,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:03:27,592 INFO L93 Difference]: Finished difference Result 627291 states and 1265497 transitions. [2020-10-14 20:03:27,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 20:03:27,593 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 989 [2020-10-14 20:03:27,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted.