/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/Problem18_label43.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 22:50:45,978 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 22:50:45,981 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 22:50:46,022 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 22:50:46,022 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 22:50:46,031 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 22:50:46,032 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 22:50:46,034 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 22:50:46,037 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 22:50:46,040 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 22:50:46,041 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 22:50:46,043 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 22:50:46,044 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 22:50:46,046 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 22:50:46,049 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 22:50:46,050 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 22:50:46,052 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 22:50:46,054 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 22:50:46,056 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 22:50:46,062 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 22:50:46,064 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 22:50:46,065 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 22:50:46,067 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 22:50:46,069 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 22:50:46,078 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 22:50:46,078 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 22:50:46,079 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 22:50:46,083 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 22:50:46,083 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 22:50:46,086 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 22:50:46,086 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 22:50:46,087 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 22:50:46,087 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 22:50:46,088 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 22:50:46,089 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 22:50:46,089 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 22:50:46,090 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 22:50:46,090 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 22:50:46,091 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 22:50:46,091 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 22:50:46,093 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 22:50:46,093 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 22:50:46,125 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 22:50:46,125 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 22:50:46,127 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 22:50:46,127 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 22:50:46,127 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 22:50:46,127 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 22:50:46,127 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 22:50:46,128 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 22:50:46,128 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 22:50:46,128 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 22:50:46,128 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 22:50:46,128 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 22:50:46,129 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 22:50:46,129 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 22:50:46,129 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 22:50:46,129 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 22:50:46,129 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 22:50:46,130 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 22:50:46,130 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 22:50:46,130 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 22:50:46,130 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 22:50:46,130 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 22:50:46,131 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 22:50:46,131 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 22:50:46,131 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 22:50:46,131 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 22:50:46,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 22:50:46,132 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 22:50:46,132 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 22:50:46,132 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 22:50:46,429 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 22:50:46,443 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 22:50:46,447 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 22:50:46,448 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 22:50:46,449 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 22:50:46,450 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label43.c [2020-10-14 22:50:46,519 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/84e8b969e/d9cbb187566c46d982353bfc87c1ed80/FLAG64b5b7f93 [2020-10-14 22:50:47,265 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 22:50:47,266 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label43.c [2020-10-14 22:50:47,295 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/84e8b969e/d9cbb187566c46d982353bfc87c1ed80/FLAG64b5b7f93 [2020-10-14 22:50:47,385 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/84e8b969e/d9cbb187566c46d982353bfc87c1ed80 [2020-10-14 22:50:47,396 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 22:50:47,398 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 22:50:47,402 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 22:50:47,402 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 22:50:47,406 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 22:50:47,407 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:50:47" (1/1) ... [2020-10-14 22:50:47,410 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27030054 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:50:47, skipping insertion in model container [2020-10-14 22:50:47,411 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:50:47" (1/1) ... [2020-10-14 22:50:47,421 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 22:50:47,554 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 22:50:48,906 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:50:48,911 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 22:50:49,328 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:50:49,361 INFO L208 MainTranslator]: Completed translation [2020-10-14 22:50:49,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:50:49 WrapperNode [2020-10-14 22:50:49,363 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 22:50:49,364 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 22:50:49,364 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 22:50:49,365 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 22:50:49,380 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:50:49" (1/1) ... [2020-10-14 22:50:49,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:50:49" (1/1) ... [2020-10-14 22:50:49,446 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:50:49" (1/1) ... [2020-10-14 22:50:49,447 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:50:49" (1/1) ... [2020-10-14 22:50:49,543 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:50:49" (1/1) ... [2020-10-14 22:50:49,569 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:50:49" (1/1) ... [2020-10-14 22:50:49,590 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:50:49" (1/1) ... [2020-10-14 22:50:49,626 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 22:50:49,627 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 22:50:49,627 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 22:50:49,628 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 22:50:49,629 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:50:49" (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 22:50:49,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 22:50:49,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 22:50:49,712 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 22:50:49,712 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 22:50:49,712 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 22:50:49,712 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 22:50:49,713 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 22:50:49,713 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 22:50:49,713 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 22:50:49,713 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 22:50:49,713 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 22:50:49,714 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 22:50:49,714 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 22:50:49,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 22:50:49,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 22:50:55,926 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 22:50:55,927 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 22:50:55,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:50:55 BoogieIcfgContainer [2020-10-14 22:50:55,938 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 22:50:55,940 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 22:50:55,940 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 22:50:55,944 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 22:50:55,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:50:47" (1/3) ... [2020-10-14 22:50:55,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50113fb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:50:55, skipping insertion in model container [2020-10-14 22:50:55,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:50:49" (2/3) ... [2020-10-14 22:50:55,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50113fb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:50:55, skipping insertion in model container [2020-10-14 22:50:55,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:50:55" (3/3) ... [2020-10-14 22:50:55,948 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label43.c [2020-10-14 22:50:55,961 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 22:50:55,970 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 22:50:55,986 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 22:50:56,017 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 22:50:56,018 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 22:50:56,018 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 22:50:56,018 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 22:50:56,018 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 22:50:56,018 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 22:50:56,019 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 22:50:56,019 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 22:50:56,055 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2020-10-14 22:50:56,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-14 22:50:56,068 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:50:56,070 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] [2020-10-14 22:50:56,070 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:50:56,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:50:56,078 INFO L82 PathProgramCache]: Analyzing trace with hash -1742220159, now seen corresponding path program 1 times [2020-10-14 22:50:56,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:50:56,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1825303234] [2020-10-14 22:50:56,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:50:56,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:50:56,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:50:56,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:50:56,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 22:50:56,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:50:56,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 423 [2020-10-14 22:50:56,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:50:56,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:50:56,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:50:56,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:50:56,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 22:50:56,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 22:50:56,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:50:56,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:50:56,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:50:56,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:50:56,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:50:56,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:50:56,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 22:50:56,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:50:56,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:50:56,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:50:56,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:50:56,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:50:56,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:50:56,936 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 22:50:56,937 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1825303234] [2020-10-14 22:50:56,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:50:56,940 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 22:50:56,941 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259211274] [2020-10-14 22:50:56,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 22:50:56,946 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:50:56,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 22:50:56,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:50:56,967 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 5 states. [2020-10-14 22:51:07,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:51:07,997 INFO L93 Difference]: Finished difference Result 2984 states and 5767 transitions. [2020-10-14 22:51:08,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 22:51:08,002 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2020-10-14 22:51:08,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:51:08,048 INFO L225 Difference]: With dead ends: 2984 [2020-10-14 22:51:08,048 INFO L226 Difference]: Without dead ends: 2142 [2020-10-14 22:51:08,058 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:51:08,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2142 states. [2020-10-14 22:51:08,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2142 to 2135. [2020-10-14 22:51:08,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2135 states. [2020-10-14 22:51:08,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2135 states to 2135 states and 3227 transitions. [2020-10-14 22:51:08,243 INFO L78 Accepts]: Start accepts. Automaton has 2135 states and 3227 transitions. Word has length 72 [2020-10-14 22:51:08,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:51:08,244 INFO L479 AbstractCegarLoop]: Abstraction has 2135 states and 3227 transitions. [2020-10-14 22:51:08,244 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 22:51:08,245 INFO L276 IsEmpty]: Start isEmpty. Operand 2135 states and 3227 transitions. [2020-10-14 22:51:08,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-14 22:51:08,251 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:51:08,252 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:51:08,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 22:51:08,253 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:51:08,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:51:08,253 INFO L82 PathProgramCache]: Analyzing trace with hash 477586780, now seen corresponding path program 1 times [2020-10-14 22:51:08,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:51:08,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1974604241] [2020-10-14 22:51:08,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:51:08,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:51:08,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:51:08,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:51:08,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:51:10,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:51:10,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-14 22:51:10,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:51:10,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1797 [2020-10-14 22:51:10,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:51:10,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:51:10,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:51:10,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-14 22:51:10,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 22:51:10,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:51:10,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:51:10,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:51:10,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:51:10,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:51:10,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:51:10,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:51:10,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 22:51:10,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:51:10,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:51:10,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:51:10,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:51:10,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:51:10,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:51:10,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:51:10,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:51:10,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:51:10,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:51:10,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 22:51:10,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:51:10,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-14 22:51:10,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:51:10,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:51:10,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:51:10,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:51:10,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 22:51:10,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:51:10,472 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 64 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:51:10,472 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1974604241] [2020-10-14 22:51:10,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:51:10,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 22:51:10,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180308678] [2020-10-14 22:51:10,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 22:51:10,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:51:10,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 22:51:10,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 22:51:10,476 INFO L87 Difference]: Start difference. First operand 2135 states and 3227 transitions. Second operand 6 states. [2020-10-14 22:51:22,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:51:22,281 INFO L93 Difference]: Finished difference Result 8541 states and 13117 transitions. [2020-10-14 22:51:22,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 22:51:22,286 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 142 [2020-10-14 22:51:22,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:51:22,326 INFO L225 Difference]: With dead ends: 8541 [2020-10-14 22:51:22,326 INFO L226 Difference]: Without dead ends: 6412 [2020-10-14 22:51:22,333 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:51:22,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6412 states. [2020-10-14 22:51:22,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6412 to 6408. [2020-10-14 22:51:22,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6408 states. [2020-10-14 22:51:22,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6408 states to 6408 states and 9146 transitions. [2020-10-14 22:51:22,512 INFO L78 Accepts]: Start accepts. Automaton has 6408 states and 9146 transitions. Word has length 142 [2020-10-14 22:51:22,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:51:22,516 INFO L479 AbstractCegarLoop]: Abstraction has 6408 states and 9146 transitions. [2020-10-14 22:51:22,516 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 22:51:22,516 INFO L276 IsEmpty]: Start isEmpty. Operand 6408 states and 9146 transitions. [2020-10-14 22:51:22,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-10-14 22:51:22,533 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:51:22,533 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:51:22,533 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 22:51:22,534 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:51:22,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:51:22,534 INFO L82 PathProgramCache]: Analyzing trace with hash -1667016260, now seen corresponding path program 1 times [2020-10-14 22:51:22,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:51:22,535 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [117860451] [2020-10-14 22:51:22,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:51:22,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:51:22,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:51:22,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:51:23,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:51:24,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:51:24,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-10-14 22:51:24,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:51:24,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1651 [2020-10-14 22:51:24,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:51:24,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:51:24,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:51:24,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:51:24,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-10-14 22:51:24,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:51:24,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:51:24,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:51:24,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:51:24,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:51:24,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:51:24,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:51:24,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 22:51:24,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:51:24,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:51:24,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:51:24,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:51:24,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:51:24,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:51:24,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:51:24,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:51:24,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:51:24,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:51:24,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-14 22:51:24,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:51:24,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-10-14 22:51:24,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:51:24,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:51:24,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:51:24,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:51:24,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-14 22:51:24,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:51:24,828 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:51:24,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [117860451] [2020-10-14 22:51:24,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:51:24,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 22:51:24,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584391086] [2020-10-14 22:51:24,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:51:24,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:51:24,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:51:24,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:51:24,835 INFO L87 Difference]: Start difference. First operand 6408 states and 9146 transitions. Second operand 7 states. [2020-10-14 22:51:34,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:51:34,614 INFO L93 Difference]: Finished difference Result 19354 states and 28158 transitions. [2020-10-14 22:51:34,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:51:34,615 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 222 [2020-10-14 22:51:34,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:51:34,681 INFO L225 Difference]: With dead ends: 19354 [2020-10-14 22:51:34,681 INFO L226 Difference]: Without dead ends: 12952 [2020-10-14 22:51:34,701 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:51:34,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12952 states. [2020-10-14 22:51:34,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12952 to 10070. [2020-10-14 22:51:34,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10070 states. [2020-10-14 22:51:35,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10070 states to 10070 states and 13421 transitions. [2020-10-14 22:51:35,026 INFO L78 Accepts]: Start accepts. Automaton has 10070 states and 13421 transitions. Word has length 222 [2020-10-14 22:51:35,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:51:35,028 INFO L479 AbstractCegarLoop]: Abstraction has 10070 states and 13421 transitions. [2020-10-14 22:51:35,029 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:51:35,032 INFO L276 IsEmpty]: Start isEmpty. Operand 10070 states and 13421 transitions. [2020-10-14 22:51:35,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-10-14 22:51:35,038 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:51:35,039 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:51:35,039 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 22:51:35,040 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:51:35,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:51:35,040 INFO L82 PathProgramCache]: Analyzing trace with hash 182325314, now seen corresponding path program 1 times [2020-10-14 22:51:35,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:51:35,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [327113300] [2020-10-14 22:51:35,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:51:35,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:51:35,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:51:35,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:51:36,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:51:37,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:51:37,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-14 22:51:37,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:51:37,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2788 [2020-10-14 22:51:37,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:51:37,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:51:37,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:51:37,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-14 22:51:37,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 22:51:37,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:51:37,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:51:37,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:51:37,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:51:37,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:51:37,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:51:37,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:51:37,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 22:51:37,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:51:37,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:51:37,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:51:37,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:51:37,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:51:37,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:51:37,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:51:38,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:51:38,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:51:38,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:51:38,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 22:51:38,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:51:38,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 22:51:38,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:51:38,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:51:38,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:51:38,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:51:38,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-14 22:51:38,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:51:38,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 22:51:38,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:51:38,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:51:38,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:51:38,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 22:51:38,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:51:38,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-14 22:51:38,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:51:38,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:51:38,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:51:38,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:51:38,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 22:51:38,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:51:38,336 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 216 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 22:51:38,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [327113300] [2020-10-14 22:51:38,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:51:38,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:51:38,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118008947] [2020-10-14 22:51:38,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:51:38,340 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:51:38,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:51:38,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:51:38,342 INFO L87 Difference]: Start difference. First operand 10070 states and 13421 transitions. Second operand 7 states. [2020-10-14 22:51:48,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:51:48,188 INFO L93 Difference]: Finished difference Result 28365 states and 39148 transitions. [2020-10-14 22:51:48,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:51:48,189 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 251 [2020-10-14 22:51:48,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:51:48,273 INFO L225 Difference]: With dead ends: 28365 [2020-10-14 22:51:48,273 INFO L226 Difference]: Without dead ends: 18301 [2020-10-14 22:51:48,297 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:51:48,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18301 states. [2020-10-14 22:51:48,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18301 to 18214. [2020-10-14 22:51:48,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18214 states. [2020-10-14 22:51:48,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18214 states to 18214 states and 23954 transitions. [2020-10-14 22:51:48,932 INFO L78 Accepts]: Start accepts. Automaton has 18214 states and 23954 transitions. Word has length 251 [2020-10-14 22:51:48,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:51:48,933 INFO L479 AbstractCegarLoop]: Abstraction has 18214 states and 23954 transitions. [2020-10-14 22:51:48,933 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:51:48,933 INFO L276 IsEmpty]: Start isEmpty. Operand 18214 states and 23954 transitions. [2020-10-14 22:51:48,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2020-10-14 22:51:48,943 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:51:48,944 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:51:48,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 22:51:48,944 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:51:48,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:51:48,945 INFO L82 PathProgramCache]: Analyzing trace with hash 471137792, now seen corresponding path program 1 times [2020-10-14 22:51:48,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:51:48,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [161173359] [2020-10-14 22:51:48,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:51:48,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:51:49,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:51:49,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:51:49,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:51:49,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:51:53,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:51:53,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 348 [2020-10-14 22:51:53,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:51:53,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 22:51:53,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:51:53,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:51:53,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:51:53,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-14 22:51:53,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 22:51:53,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:51:54,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:51:54,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:51:54,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:51:54,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:51:54,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:51:54,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:51:54,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:51:54,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:51:54,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:51:54,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:51:54,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:51:54,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:51:54,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:51:54,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:51:54,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:51:54,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:51:54,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:51:54,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 22:51:54,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:51:54,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 22:51:54,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:51:54,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:51:54,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:51:54,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:51:54,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:51:54,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:51:54,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-14 22:51:54,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:51:54,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:51:54,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:51:54,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 22:51:54,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:51:54,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 22:51:54,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:51:54,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:51:54,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:51:54,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:51:54,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 22:51:54,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:51:54,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-14 22:51:54,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:51:54,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:51:54,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:51:54,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 22:51:54,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:51:54,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-14 22:51:54,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:51:54,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:51:54,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:51:54,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:51:54,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 22:51:54,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:51:54,661 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 359 proven. 2 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-14 22:51:54,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [161173359] [2020-10-14 22:51:54,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:51:54,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 22:51:54,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651817853] [2020-10-14 22:51:54,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:51:54,663 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:51:54,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:51:54,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:51:54,664 INFO L87 Difference]: Start difference. First operand 18214 states and 23954 transitions. Second operand 8 states. [2020-10-14 22:52:08,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:52:08,240 INFO L93 Difference]: Finished difference Result 46644 states and 63006 transitions. [2020-10-14 22:52:08,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 22:52:08,241 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 334 [2020-10-14 22:52:08,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:52:08,447 INFO L225 Difference]: With dead ends: 46644 [2020-10-14 22:52:08,448 INFO L226 Difference]: Without dead ends: 24739 [2020-10-14 22:52:08,497 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-14 22:52:08,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24739 states. [2020-10-14 22:52:08,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24739 to 22539. [2020-10-14 22:52:08,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22539 states. [2020-10-14 22:52:08,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22539 states to 22539 states and 26055 transitions. [2020-10-14 22:52:08,985 INFO L78 Accepts]: Start accepts. Automaton has 22539 states and 26055 transitions. Word has length 334 [2020-10-14 22:52:08,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:52:08,986 INFO L479 AbstractCegarLoop]: Abstraction has 22539 states and 26055 transitions. [2020-10-14 22:52:08,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:52:08,986 INFO L276 IsEmpty]: Start isEmpty. Operand 22539 states and 26055 transitions. [2020-10-14 22:52:08,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2020-10-14 22:52:08,995 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:52:08,996 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:52:08,996 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 22:52:08,996 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:52:08,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:52:08,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1745070148, now seen corresponding path program 1 times [2020-10-14 22:52:08,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:52:08,998 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [249908031] [2020-10-14 22:52:08,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:52:09,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:52:09,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:52:09,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:52:09,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:52:11,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:52:14,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:52:14,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 362 [2020-10-14 22:52:14,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:52:14,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-14 22:52:14,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:52:14,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:52:14,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:52:14,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-14 22:52:14,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 22:52:14,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:52:14,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:52:14,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:52:14,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:52:14,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:52:14,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:52:14,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:52:14,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 22:52:14,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:52:14,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:52:14,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:52:14,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:52:14,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:52:14,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:52:14,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:52:14,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:52:14,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:52:14,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:52:14,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 22:52:14,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:52:14,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 22:52:14,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:52:14,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:52:14,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:52:14,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:52:14,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 22:52:14,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:52:14,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-14 22:52:14,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:52:14,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:52:14,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:52:14,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 22:52:14,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:52:14,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-14 22:52:14,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:52:14,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:52:14,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:52:14,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:52:14,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 22:52:14,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:52:14,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-10-14 22:52:14,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:52:14,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:52:14,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:52:14,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 22:52:14,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:52:14,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-14 22:52:14,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:52:14,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:52:14,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:52:14,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-14 22:52:14,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:52:14,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:52:14,891 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 272 proven. 88 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-14 22:52:14,892 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [249908031] [2020-10-14 22:52:14,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:52:14,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:52:14,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947864337] [2020-10-14 22:52:14,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:52:14,894 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:52:14,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:52:14,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:52:14,895 INFO L87 Difference]: Start difference. First operand 22539 states and 26055 transitions. Second operand 7 states. [2020-10-14 22:52:24,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:52:24,425 INFO L93 Difference]: Finished difference Result 51731 states and 62483 transitions. [2020-10-14 22:52:24,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 22:52:24,427 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 348 [2020-10-14 22:52:24,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:52:24,525 INFO L225 Difference]: With dead ends: 51731 [2020-10-14 22:52:24,525 INFO L226 Difference]: Without dead ends: 29198 [2020-10-14 22:52:24,565 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 22:52:24,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29198 states. [2020-10-14 22:52:25,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29198 to 26169. [2020-10-14 22:52:25,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26169 states. [2020-10-14 22:52:25,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26169 states to 26169 states and 30074 transitions. [2020-10-14 22:52:25,115 INFO L78 Accepts]: Start accepts. Automaton has 26169 states and 30074 transitions. Word has length 348 [2020-10-14 22:52:25,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:52:25,116 INFO L479 AbstractCegarLoop]: Abstraction has 26169 states and 30074 transitions. [2020-10-14 22:52:25,116 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:52:25,117 INFO L276 IsEmpty]: Start isEmpty. Operand 26169 states and 30074 transitions. [2020-10-14 22:52:25,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2020-10-14 22:52:25,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:52:25,138 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 22:52:25,139 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 22:52:25,139 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:52:25,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:52:25,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1168964906, now seen corresponding path program 1 times [2020-10-14 22:52:25,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:52:25,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [265882046] [2020-10-14 22:52:25,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:52:25,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:52:25,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:52:25,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:52:25,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:52:30,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:52:30,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 429 [2020-10-14 22:52:30,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:52:30,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 22:52:30,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:52:30,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:52:30,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:52:30,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-14 22:52:30,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 226 [2020-10-14 22:52:30,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:52:30,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:52:30,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:52:30,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:52:30,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:52:30,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:52:30,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:52:30,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:52:30,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:52:30,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:52:30,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:52:30,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:52:30,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:52:30,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:52:30,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:52:30,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:52:30,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:52:30,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:52:30,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 22:52:30,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:52:30,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 22:52:30,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:52:30,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:52:30,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:52:30,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:52:30,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-14 22:52:30,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:52:30,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-14 22:52:30,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:52:30,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:52:30,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:52:30,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-14 22:52:30,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:52:30,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 299 [2020-10-14 22:52:30,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:52:30,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:52:30,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:52:30,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:52:30,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 224 [2020-10-14 22:52:30,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:52:31,534 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 249 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 22:52:31,535 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [265882046] [2020-10-14 22:52:31,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:52:31,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:52:31,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067962352] [2020-10-14 22:52:31,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:52:31,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:52:31,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:52:31,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:52:31,537 INFO L87 Difference]: Start difference. First operand 26169 states and 30074 transitions. Second operand 7 states. [2020-10-14 22:52:40,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:52:40,425 INFO L93 Difference]: Finished difference Result 58140 states and 67666 transitions. [2020-10-14 22:52:40,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 22:52:40,427 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 417 [2020-10-14 22:52:40,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:52:40,510 INFO L225 Difference]: With dead ends: 58140 [2020-10-14 22:52:40,510 INFO L226 Difference]: Without dead ends: 31977 [2020-10-14 22:52:40,546 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 22:52:40,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31977 states. [2020-10-14 22:52:40,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31977 to 31891. [2020-10-14 22:52:40,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31891 states. [2020-10-14 22:52:41,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31891 states to 31891 states and 36304 transitions. [2020-10-14 22:52:41,025 INFO L78 Accepts]: Start accepts. Automaton has 31891 states and 36304 transitions. Word has length 417 [2020-10-14 22:52:41,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:52:41,026 INFO L479 AbstractCegarLoop]: Abstraction has 31891 states and 36304 transitions. [2020-10-14 22:52:41,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:52:41,026 INFO L276 IsEmpty]: Start isEmpty. Operand 31891 states and 36304 transitions. [2020-10-14 22:52:41,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2020-10-14 22:52:41,045 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:52:41,046 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 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 22:52:41,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 22:52:41,046 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:52:41,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:52:41,047 INFO L82 PathProgramCache]: Analyzing trace with hash -235520379, now seen corresponding path program 1 times [2020-10-14 22:52:41,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:52:41,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1100164373] [2020-10-14 22:52:41,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:52:41,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:52:41,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:52:41,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:52:41,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:52:43,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:52:46,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:52:46,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 451 [2020-10-14 22:52:46,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:52:46,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-14 22:52:46,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:52:46,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:52:46,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:52:46,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 152 [2020-10-14 22:52:46,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-14 22:52:46,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:52:46,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:52:46,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:52:46,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:52:46,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:52:46,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:52:46,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:52:46,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:52:46,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:52:46,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:52:46,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:52:46,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:52:46,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:52:46,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:52:46,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:52:46,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:52:46,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:52:46,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:52:46,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-14 22:52:46,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:52:46,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-14 22:52:46,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:52:46,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:52:46,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:52:46,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:52:46,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-14 22:52:46,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:52:46,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-10-14 22:52:46,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:52:46,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:52:46,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:52:46,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-14 22:52:46,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:52:46,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-14 22:52:46,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:52:46,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:52:46,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:52:46,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:52:46,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-14 22:52:46,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:52:46,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-10-14 22:52:46,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:52:46,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:52:46,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:52:46,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-14 22:52:46,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:52:46,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 22:52:46,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:52:46,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:52:46,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:52:46,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-14 22:52:46,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:52:46,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:52:46,821 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 321 proven. 97 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2020-10-14 22:52:46,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1100164373] [2020-10-14 22:52:46,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:52:46,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:52:46,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625589606] [2020-10-14 22:52:46,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:52:46,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:52:46,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:52:46,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:52:46,824 INFO L87 Difference]: Start difference. First operand 31891 states and 36304 transitions. Second operand 7 states. [2020-10-14 22:52:56,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:52:56,318 INFO L93 Difference]: Finished difference Result 73184 states and 83961 transitions. [2020-10-14 22:52:56,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:52:56,319 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 437 [2020-10-14 22:52:56,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:52:56,413 INFO L225 Difference]: With dead ends: 73184 [2020-10-14 22:52:56,413 INFO L226 Difference]: Without dead ends: 41299 [2020-10-14 22:52:56,456 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:52:56,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41299 states. [2020-10-14 22:52:57,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41299 to 41240. [2020-10-14 22:52:57,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41240 states. [2020-10-14 22:52:57,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41240 states to 41240 states and 46620 transitions. [2020-10-14 22:52:57,187 INFO L78 Accepts]: Start accepts. Automaton has 41240 states and 46620 transitions. Word has length 437 [2020-10-14 22:52:57,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:52:57,187 INFO L479 AbstractCegarLoop]: Abstraction has 41240 states and 46620 transitions. [2020-10-14 22:52:57,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:52:57,187 INFO L276 IsEmpty]: Start isEmpty. Operand 41240 states and 46620 transitions. [2020-10-14 22:52:57,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2020-10-14 22:52:57,203 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:52:57,204 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:52:57,204 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 22:52:57,204 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:52:57,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:52:57,205 INFO L82 PathProgramCache]: Analyzing trace with hash -1312922665, now seen corresponding path program 1 times [2020-10-14 22:52:57,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:52:57,205 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1547283665] [2020-10-14 22:52:57,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:52:57,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:52:57,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:52:57,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:52:57,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:53:00,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:53:01,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:53:02,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:53:02,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 467 [2020-10-14 22:53:02,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 22:53:02,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-14 22:53:02,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:53:02,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:53:02,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:53:02,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 226 [2020-10-14 22:53:02,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 240 [2020-10-14 22:53:02,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:53:02,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:53:02,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:53:02,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:53:02,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:53:02,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:53:02,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:53:02,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:53:02,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:53:02,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:53:02,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:53:02,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:53:02,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:53:02,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:53:02,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:53:02,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:53:02,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:53:02,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:53:02,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-14 22:53:02,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:53:02,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 22:53:02,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:53:02,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:53:02,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:53:02,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:53:02,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:53:02,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:53:02,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-10-14 22:53:02,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:53:02,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:53:02,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:53:02,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 22:53:02,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:53:02,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 22:53:02,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:53:02,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:53:02,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:53:02,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:53:02,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 22:53:02,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:53:02,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-10-14 22:53:02,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:53:02,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:53:02,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:53:02,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:53:02,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-14 22:53:02,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:53:02,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 307 [2020-10-14 22:53:02,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:53:02,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:53:02,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:53:02,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:53:02,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-10-14 22:53:02,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:53:03,149 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 203 proven. 3 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2020-10-14 22:53:03,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1547283665] [2020-10-14 22:53:03,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:53:03,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:53:03,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281462283] [2020-10-14 22:53:03,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:53:03,152 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:53:03,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:53:03,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:53:03,152 INFO L87 Difference]: Start difference. First operand 41240 states and 46620 transitions. Second operand 7 states. [2020-10-14 22:53:13,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:53:13,294 INFO L93 Difference]: Finished difference Result 93755 states and 107972 transitions. [2020-10-14 22:53:13,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 22:53:13,296 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 453 [2020-10-14 22:53:13,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:53:13,397 INFO L225 Difference]: With dead ends: 93755 [2020-10-14 22:53:13,397 INFO L226 Difference]: Without dead ends: 52521 [2020-10-14 22:53:13,440 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-10-14 22:53:13,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52521 states. [2020-10-14 22:53:14,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52521 to 50380. [2020-10-14 22:53:14,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50380 states. [2020-10-14 22:53:14,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50380 states to 50380 states and 56067 transitions. [2020-10-14 22:53:14,395 INFO L78 Accepts]: Start accepts. Automaton has 50380 states and 56067 transitions. Word has length 453 [2020-10-14 22:53:14,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:53:14,397 INFO L479 AbstractCegarLoop]: Abstraction has 50380 states and 56067 transitions. [2020-10-14 22:53:14,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:53:14,397 INFO L276 IsEmpty]: Start isEmpty. Operand 50380 states and 56067 transitions. [2020-10-14 22:53:14,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 825 [2020-10-14 22:53:14,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:53:14,469 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:53:14,469 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 22:53:14,469 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:53:14,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:53:14,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1966444821, now seen corresponding path program 1 times [2020-10-14 22:53:14,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:53:14,471 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1860289463] [2020-10-14 22:53:14,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:53:14,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:53:14,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:53:14,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:53:16,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:53:16,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:53:17,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:53:18,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:53:19,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:53:19,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 840 [2020-10-14 22:53:19,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 22:53:19,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-14 22:53:19,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:53:19,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:53:19,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:53:19,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 280 [2020-10-14 22:53:19,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 486 [2020-10-14 22:53:19,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:53:19,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:53:19,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:53:19,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:53:19,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:53:19,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:53:19,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:53:19,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:53:19,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:53:19,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:53:19,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:53:19,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:53:19,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:53:19,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:53:19,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:53:19,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:53:19,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:53:19,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:53:19,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-10-14 22:53:19,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:53:19,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 22:53:19,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:53:19,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:53:19,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:53:19,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:53:19,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:53:19,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:53:19,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-10-14 22:53:19,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:53:19,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:53:19,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:53:19,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:53:19,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:53:19,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 22:53:19,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:53:19,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:53:19,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:53:19,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:53:19,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 22:53:19,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:53:19,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2020-10-14 22:53:19,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:53:20,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:53:20,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:53:20,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 487 [2020-10-14 22:53:20,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:53:20,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 521 [2020-10-14 22:53:20,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:53:20,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:53:20,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:53:20,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:53:20,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 487 [2020-10-14 22:53:20,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:53:20,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:53:20,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:53:20,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:53:20,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:53:20,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-14 22:53:20,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:53:20,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-14 22:53:20,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:53:20,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:53:20,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:53:20,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:53:20,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-14 22:53:20,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:53:21,978 INFO L134 CoverageAnalysis]: Checked inductivity of 534 backedges. 462 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-14 22:53:21,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1860289463] [2020-10-14 22:53:21,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:53:21,980 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 22:53:21,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158421617] [2020-10-14 22:53:21,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:53:21,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:53:21,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:53:21,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:53:21,982 INFO L87 Difference]: Start difference. First operand 50380 states and 56067 transitions. Second operand 8 states. [2020-10-14 22:53:30,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:53:30,326 INFO L93 Difference]: Finished difference Result 100851 states and 112397 transitions. [2020-10-14 22:53:30,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:53:30,327 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 824 [2020-10-14 22:53:30,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:53:30,428 INFO L225 Difference]: With dead ends: 100851 [2020-10-14 22:53:30,428 INFO L226 Difference]: Without dead ends: 50477 [2020-10-14 22:53:30,503 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-14 22:53:30,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50477 states. [2020-10-14 22:53:31,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50477 to 50399. [2020-10-14 22:53:31,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50399 states. [2020-10-14 22:53:31,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50399 states to 50399 states and 54489 transitions. [2020-10-14 22:53:31,063 INFO L78 Accepts]: Start accepts. Automaton has 50399 states and 54489 transitions. Word has length 824 [2020-10-14 22:53:31,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:53:31,065 INFO L479 AbstractCegarLoop]: Abstraction has 50399 states and 54489 transitions. [2020-10-14 22:53:31,065 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:53:31,065 INFO L276 IsEmpty]: Start isEmpty. Operand 50399 states and 54489 transitions. [2020-10-14 22:53:31,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 941 [2020-10-14 22:53:31,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:53:31,110 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:53:31,110 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 22:53:31,110 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:53:31,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:53:31,111 INFO L82 PathProgramCache]: Analyzing trace with hash -798131179, now seen corresponding path program 1 times [2020-10-14 22:53:31,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:53:31,111 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [901328413] [2020-10-14 22:53:31,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:53:31,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:53:31,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:53:31,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:53:31,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:53:36,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:53:36,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 960 [2020-10-14 22:53:36,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:53:36,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 22:53:36,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:53:36,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:53:36,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:53:36,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:53:36,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-14 22:53:36,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:53:36,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:53:36,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:53:36,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:53:36,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:53:36,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:53:36,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:53:36,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 22:53:36,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:53:36,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:53:36,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:53:36,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:53:36,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:53:36,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:53:36,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:53:36,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:53:36,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:53:36,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:53:36,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-14 22:53:36,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:53:36,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-14 22:53:36,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:53:36,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:53:36,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:53:36,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:53:36,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-14 22:53:36,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:53:36,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-10-14 22:53:36,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:53:36,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:53:36,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:53:36,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 22:53:36,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:53:36,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 22:53:36,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:53:36,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:53:36,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:53:36,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-14 22:53:36,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:53:36,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:53:36,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-10-14 22:53:36,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:53:36,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:53:36,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:53:36,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-14 22:53:36,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:53:36,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 22:53:36,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:53:36,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:53:36,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:53:36,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-14 22:53:36,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:53:36,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:53:36,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2020-10-14 22:53:36,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:53:36,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:53:36,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:53:36,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 22:53:36,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:53:36,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 22:53:36,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:53:36,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:53:36,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:53:36,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-14 22:53:36,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:53:36,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:53:36,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2020-10-14 22:53:36,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:53:36,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:53:36,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:53:36,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 487 [2020-10-14 22:53:36,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:53:36,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-14 22:53:36,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:53:36,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:53:36,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:53:36,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 484 [2020-10-14 22:53:36,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:53:36,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:53:37,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:53:37,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:53:37,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:53:37,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:53:37,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-14 22:53:37,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:53:37,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 22:53:37,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:53:37,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:53:37,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:53:37,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:53:37,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:53:37,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:53:37,479 INFO L134 CoverageAnalysis]: Checked inductivity of 1169 backedges. 325 proven. 364 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2020-10-14 22:53:37,479 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [901328413] [2020-10-14 22:53:37,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:53:37,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:53:37,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904211073] [2020-10-14 22:53:37,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:53:37,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:53:37,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:53:37,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:53:37,481 INFO L87 Difference]: Start difference. First operand 50399 states and 54489 transitions. Second operand 7 states. [2020-10-14 22:53:45,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:53:45,767 INFO L93 Difference]: Finished difference Result 101909 states and 111960 transitions. [2020-10-14 22:53:45,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:53:45,768 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 940 [2020-10-14 22:53:45,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:53:45,866 INFO L225 Difference]: With dead ends: 101909 [2020-10-14 22:53:45,866 INFO L226 Difference]: Without dead ends: 51516 [2020-10-14 22:53:45,914 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 22:53:45,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51516 states. [2020-10-14 22:53:46,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51516 to 51164. [2020-10-14 22:53:46,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51164 states. [2020-10-14 22:53:46,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51164 states to 51164 states and 55372 transitions. [2020-10-14 22:53:46,463 INFO L78 Accepts]: Start accepts. Automaton has 51164 states and 55372 transitions. Word has length 940 [2020-10-14 22:53:46,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:53:46,464 INFO L479 AbstractCegarLoop]: Abstraction has 51164 states and 55372 transitions. [2020-10-14 22:53:46,464 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:53:46,464 INFO L276 IsEmpty]: Start isEmpty. Operand 51164 states and 55372 transitions. [2020-10-14 22:53:46,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 945 [2020-10-14 22:53:46,500 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:53:46,501 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:53:46,501 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 22:53:46,502 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:53:46,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:53:46,502 INFO L82 PathProgramCache]: Analyzing trace with hash 16961158, now seen corresponding path program 1 times [2020-10-14 22:53:46,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:53:46,503 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1889305099] [2020-10-14 22:53:46,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:53:46,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:53:46,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:53:46,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:53:47,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:53:50,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:53:51,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:53:51,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:53:51,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 962 [2020-10-14 22:53:51,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 22:53:51,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-14 22:53:51,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:53:51,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:53:51,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:53:51,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 402 [2020-10-14 22:53:51,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 486 [2020-10-14 22:53:51,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:53:51,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:53:51,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:53:51,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:53:51,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:53:51,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:53:51,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:53:51,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:53:51,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:53:51,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:53:51,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:53:51,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:53:51,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:53:51,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:53:51,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:53:51,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:53:51,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:53:51,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:53:51,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 22:53:51,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:53:51,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 22:53:51,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:53:51,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:53:51,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:53:51,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:53:51,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:53:51,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:53:51,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-14 22:53:51,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:53:51,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:53:51,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:53:51,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-14 22:53:51,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:53:51,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 22:53:51,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:53:51,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:53:51,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:53:51,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:53:51,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:53:51,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:53:51,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-10-14 22:53:51,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:53:51,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:53:51,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:53:51,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 22:53:51,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:53:51,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 22:53:51,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:53:51,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:53:51,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:53:51,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:53:51,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 22:53:51,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:53:51,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2020-10-14 22:53:51,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:53:52,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:53:52,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:53:52,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 487 [2020-10-14 22:53:52,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:53:52,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 543 [2020-10-14 22:53:52,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:53:52,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:53:52,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:53:52,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:53:52,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 487 [2020-10-14 22:53:52,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:53:52,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:53:52,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:53:52,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:53:53,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:53:53,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-14 22:53:53,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:53:53,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 466 [2020-10-14 22:53:53,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:53:53,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:53:53,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:53:53,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:53:53,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-14 22:53:53,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:53:53,753 INFO L134 CoverageAnalysis]: Checked inductivity of 918 backedges. 649 proven. 2 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2020-10-14 22:53:53,753 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1889305099] [2020-10-14 22:53:53,753 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:53:53,754 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 22:53:53,754 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721931050] [2020-10-14 22:53:53,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:53:53,755 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:53:53,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:53:53,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:53:53,755 INFO L87 Difference]: Start difference. First operand 51164 states and 55372 transitions. Second operand 8 states. [2020-10-14 22:54:07,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:54:07,624 INFO L93 Difference]: Finished difference Result 119759 states and 133382 transitions. [2020-10-14 22:54:07,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 22:54:07,625 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 944 [2020-10-14 22:54:07,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:54:07,627 INFO L225 Difference]: With dead ends: 119759 [2020-10-14 22:54:07,627 INFO L226 Difference]: Without dead ends: 0 [2020-10-14 22:54:07,733 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-14 22:54:07,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-14 22:54:07,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-14 22:54:07,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-14 22:54:07,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-14 22:54:07,734 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 944 [2020-10-14 22:54:07,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:54:07,735 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-14 22:54:07,735 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:54:07,735 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-14 22:54:07,735 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-14 22:54:07,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 22:54:07,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-14 22:54:12,324 WARN L193 SmtUtils]: Spent 2.11 s on a formula simplification. DAG size of input: 617 DAG size of output: 425 [2020-10-14 22:54:14,873 WARN L193 SmtUtils]: Spent 1.65 s on a formula simplification. DAG size of input: 617 DAG size of output: 425 [2020-10-14 22:54:17,352 WARN L193 SmtUtils]: Spent 1.87 s on a formula simplification. DAG size of input: 354 DAG size of output: 54 [2020-10-14 22:54:19,177 WARN L193 SmtUtils]: Spent 1.75 s on a formula simplification. DAG size of input: 354 DAG size of output: 54 [2020-10-14 22:54:21,162 WARN L193 SmtUtils]: Spent 1.96 s on a formula simplification. DAG size of input: 354 DAG size of output: 54