/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/Problem13_label56.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 21:37:28,241 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 21:37:28,244 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 21:37:28,269 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 21:37:28,270 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 21:37:28,271 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 21:37:28,273 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 21:37:28,275 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 21:37:28,277 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 21:37:28,278 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 21:37:28,280 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 21:37:28,281 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 21:37:28,282 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 21:37:28,283 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 21:37:28,285 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 21:37:28,286 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 21:37:28,287 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 21:37:28,288 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 21:37:28,290 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 21:37:28,293 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 21:37:28,295 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 21:37:28,296 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 21:37:28,297 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 21:37:28,298 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 21:37:28,301 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 21:37:28,301 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 21:37:28,301 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 21:37:28,303 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 21:37:28,303 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 21:37:28,304 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 21:37:28,305 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 21:37:28,305 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 21:37:28,306 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 21:37:28,307 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 21:37:28,309 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 21:37:28,309 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 21:37:28,310 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 21:37:28,310 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 21:37:28,311 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 21:37:28,311 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 21:37:28,312 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 21:37:28,313 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 21:37:28,340 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 21:37:28,343 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 21:37:28,347 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 21:37:28,348 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 21:37:28,348 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 21:37:28,348 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 21:37:28,348 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 21:37:28,349 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 21:37:28,349 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 21:37:28,349 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 21:37:28,349 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 21:37:28,349 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 21:37:28,350 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 21:37:28,350 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 21:37:28,350 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 21:37:28,350 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 21:37:28,350 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 21:37:28,351 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 21:37:28,352 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 21:37:28,352 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 21:37:28,352 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 21:37:28,352 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:37:28,353 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 21:37:28,353 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 21:37:28,353 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 21:37:28,353 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 21:37:28,353 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 21:37:28,354 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 21:37:28,354 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 21:37:28,360 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 21:37:28,752 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 21:37:28,774 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 21:37:28,782 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 21:37:28,784 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 21:37:28,785 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 21:37:28,786 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label56.c [2020-10-14 21:37:28,877 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aef4310a5/a204c83277ca460d8c93cfdc93284b62/FLAG652d2040f [2020-10-14 21:37:29,867 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 21:37:29,868 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label56.c [2020-10-14 21:37:29,927 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aef4310a5/a204c83277ca460d8c93cfdc93284b62/FLAG652d2040f [2020-10-14 21:37:30,421 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aef4310a5/a204c83277ca460d8c93cfdc93284b62 [2020-10-14 21:37:30,437 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 21:37:30,442 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 21:37:30,444 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 21:37:30,445 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 21:37:30,449 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 21:37:30,451 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:37:30" (1/1) ... [2020-10-14 21:37:30,455 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c096cad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:30, skipping insertion in model container [2020-10-14 21:37:30,455 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:37:30" (1/1) ... [2020-10-14 21:37:30,466 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 21:37:30,716 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 21:37:32,593 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:37:32,603 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 21:37:33,458 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:37:33,498 INFO L208 MainTranslator]: Completed translation [2020-10-14 21:37:33,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:33 WrapperNode [2020-10-14 21:37:33,499 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 21:37:33,499 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 21:37:33,500 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 21:37:33,500 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 21:37:33,529 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:33" (1/1) ... [2020-10-14 21:37:33,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:33" (1/1) ... [2020-10-14 21:37:33,614 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:33" (1/1) ... [2020-10-14 21:37:33,616 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:33" (1/1) ... [2020-10-14 21:37:33,783 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:33" (1/1) ... [2020-10-14 21:37:33,840 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:33" (1/1) ... [2020-10-14 21:37:33,894 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:33" (1/1) ... [2020-10-14 21:37:33,953 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 21:37:33,954 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 21:37:33,955 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 21:37:33,955 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 21:37:33,956 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:33" (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 21:37:34,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 21:37:34,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 21:37:34,059 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 21:37:34,059 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 21:37:34,060 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 21:37:34,062 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 21:37:34,062 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 21:37:34,064 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 21:37:34,064 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 21:37:34,065 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 21:37:34,066 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 21:37:34,066 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 21:37:34,067 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 21:37:34,067 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 21:37:34,067 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 21:37:34,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 21:37:34,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 21:37:46,571 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 21:37:46,572 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 21:37:46,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:37:46 BoogieIcfgContainer [2020-10-14 21:37:46,598 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 21:37:46,600 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 21:37:46,602 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 21:37:46,607 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 21:37:46,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:37:30" (1/3) ... [2020-10-14 21:37:46,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c5868b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:37:46, skipping insertion in model container [2020-10-14 21:37:46,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:33" (2/3) ... [2020-10-14 21:37:46,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c5868b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:37:46, skipping insertion in model container [2020-10-14 21:37:46,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:37:46" (3/3) ... [2020-10-14 21:37:46,613 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label56.c [2020-10-14 21:37:46,626 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 21:37:46,637 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 21:37:46,656 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 21:37:46,702 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 21:37:46,702 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 21:37:46,702 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 21:37:46,702 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 21:37:46,702 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 21:37:46,702 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 21:37:46,702 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 21:37:46,703 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 21:37:46,749 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-14 21:37:46,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-14 21:37:46,761 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:37:46,762 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] [2020-10-14 21:37:46,763 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:37:46,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:37:46,770 INFO L82 PathProgramCache]: Analyzing trace with hash 1660978728, now seen corresponding path program 1 times [2020-10-14 21:37:46,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:37:46,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [678913484] [2020-10-14 21:37:46,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:37:47,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:37:47,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:37:47,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:37:47,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-14 21:37:47,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:37:47,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 530 [2020-10-14 21:37:47,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:37:47,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:37:47,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:37:47,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:37:47,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-14 21:37:47,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 21:37:47,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:37:47,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:37:47,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:37:47,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:37:47,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:37:47,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:37:47,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 21:37:47,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:37:47,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:37:47,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:37:47,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:37:47,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:37:47,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:37:47,867 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 21:37:47,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [678913484] [2020-10-14 21:37:47,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:37:47,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 21:37:47,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894963488] [2020-10-14 21:37:47,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:37:47,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:37:47,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:37:47,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:37:47,903 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 5 states. [2020-10-14 21:38:06,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:38:06,451 INFO L93 Difference]: Finished difference Result 3230 states and 5909 transitions. [2020-10-14 21:38:06,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:38:06,454 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 59 [2020-10-14 21:38:06,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:38:06,496 INFO L225 Difference]: With dead ends: 3230 [2020-10-14 21:38:06,497 INFO L226 Difference]: Without dead ends: 2026 [2020-10-14 21:38:06,525 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:38:06,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2026 states. [2020-10-14 21:38:06,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2026 to 2009. [2020-10-14 21:38:06,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2009 states. [2020-10-14 21:38:06,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2009 states to 2009 states and 3291 transitions. [2020-10-14 21:38:06,715 INFO L78 Accepts]: Start accepts. Automaton has 2009 states and 3291 transitions. Word has length 59 [2020-10-14 21:38:06,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:38:06,716 INFO L479 AbstractCegarLoop]: Abstraction has 2009 states and 3291 transitions. [2020-10-14 21:38:06,716 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:38:06,716 INFO L276 IsEmpty]: Start isEmpty. Operand 2009 states and 3291 transitions. [2020-10-14 21:38:06,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-14 21:38:06,734 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:38:06,734 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:38:06,735 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 21:38:06,735 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:38:06,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:38:06,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1115818579, now seen corresponding path program 1 times [2020-10-14 21:38:06,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:38:06,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1407575177] [2020-10-14 21:38:06,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:38:06,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:38:06,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:38:07,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:38:08,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:38:09,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:38:09,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 21:38:09,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:38:09,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2647 [2020-10-14 21:38:09,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:38:09,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:38:09,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:38:09,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:38:09,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 21:38:09,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-14 21:38:09,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:38:09,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:38:09,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:38:09,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:38:09,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:38:09,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:38:09,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 21:38:09,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:38:09,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:38:09,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:38:09,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:38:09,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:38:09,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:38:09,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:38:09,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:38:09,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:38:09,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:38:09,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:38:09,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:38:09,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-14 21:38:09,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:38:09,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:38:09,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:38:09,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:38:09,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 21:38:09,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:38:10,412 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:38:10,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1407575177] [2020-10-14 21:38:10,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:38:10,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:38:10,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615283414] [2020-10-14 21:38:10,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:38:10,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:38:10,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:38:10,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:38:10,416 INFO L87 Difference]: Start difference. First operand 2009 states and 3291 transitions. Second operand 7 states. [2020-10-14 21:38:36,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:38:36,550 INFO L93 Difference]: Finished difference Result 5878 states and 9797 transitions. [2020-10-14 21:38:36,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:38:36,552 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 134 [2020-10-14 21:38:36,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:38:36,586 INFO L225 Difference]: With dead ends: 5878 [2020-10-14 21:38:36,586 INFO L226 Difference]: Without dead ends: 3875 [2020-10-14 21:38:36,594 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 21:38:36,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3875 states. [2020-10-14 21:38:36,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3875 to 3754. [2020-10-14 21:38:36,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3754 states. [2020-10-14 21:38:36,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3754 states to 3754 states and 5625 transitions. [2020-10-14 21:38:36,803 INFO L78 Accepts]: Start accepts. Automaton has 3754 states and 5625 transitions. Word has length 134 [2020-10-14 21:38:36,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:38:36,805 INFO L479 AbstractCegarLoop]: Abstraction has 3754 states and 5625 transitions. [2020-10-14 21:38:36,805 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:38:36,806 INFO L276 IsEmpty]: Start isEmpty. Operand 3754 states and 5625 transitions. [2020-10-14 21:38:36,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-14 21:38:36,810 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:38:36,811 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:38:36,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 21:38:36,811 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:38:36,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:38:36,812 INFO L82 PathProgramCache]: Analyzing trace with hash -1201129911, now seen corresponding path program 1 times [2020-10-14 21:38:36,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:38:36,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1568300783] [2020-10-14 21:38:36,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:38:36,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:38:36,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:38:37,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:38:37,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:38:37,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-14 21:38:37,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:38:37,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 965 [2020-10-14 21:38:37,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:38:37,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:38:37,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:38:37,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:38:37,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 21:38:37,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:38:37,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:38:37,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:38:37,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:38:37,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:38:37,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:38:37,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:38:37,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 21:38:37,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:38:37,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:38:37,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:38:37,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:38:37,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:38:37,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:38:37,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:38:37,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:38:37,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:38:38,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:38:38,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 21:38:38,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:38:38,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-14 21:38:38,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:38:38,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:38:38,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:38:38,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:38:38,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 21:38:38,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:38:38,205 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:38:38,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1568300783] [2020-10-14 21:38:38,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:38:38,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:38:38,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564799904] [2020-10-14 21:38:38,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:38:38,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:38:38,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:38:38,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:38:38,211 INFO L87 Difference]: Start difference. First operand 3754 states and 5625 transitions. Second operand 7 states. [2020-10-14 21:39:00,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:39:00,232 INFO L93 Difference]: Finished difference Result 11086 states and 17021 transitions. [2020-10-14 21:39:00,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:39:00,234 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 148 [2020-10-14 21:39:00,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:39:00,273 INFO L225 Difference]: With dead ends: 11086 [2020-10-14 21:39:00,274 INFO L226 Difference]: Without dead ends: 7338 [2020-10-14 21:39:00,286 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:39:00,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7338 states. [2020-10-14 21:39:00,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7338 to 7232. [2020-10-14 21:39:00,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7232 states. [2020-10-14 21:39:00,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7232 states to 7232 states and 9876 transitions. [2020-10-14 21:39:00,481 INFO L78 Accepts]: Start accepts. Automaton has 7232 states and 9876 transitions. Word has length 148 [2020-10-14 21:39:00,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:39:00,481 INFO L479 AbstractCegarLoop]: Abstraction has 7232 states and 9876 transitions. [2020-10-14 21:39:00,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:39:00,481 INFO L276 IsEmpty]: Start isEmpty. Operand 7232 states and 9876 transitions. [2020-10-14 21:39:00,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-14 21:39:00,484 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:39:00,484 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:39:00,485 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 21:39:00,485 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:39:00,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:39:00,485 INFO L82 PathProgramCache]: Analyzing trace with hash -269002135, now seen corresponding path program 1 times [2020-10-14 21:39:00,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:39:00,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2062782192] [2020-10-14 21:39:00,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:39:00,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:39:00,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:39:00,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:39:01,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:39:01,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-14 21:39:01,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:39:01,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 950 [2020-10-14 21:39:01,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:39:01,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:39:01,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:39:01,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:39:01,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 21:39:01,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:39:01,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:39:01,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:39:01,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:39:01,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:39:01,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:39:01,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:39:01,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 21:39:01,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:39:01,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:39:01,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:39:01,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:39:01,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:39:01,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:39:01,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:39:01,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:39:01,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:39:01,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:39:01,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-14 21:39:01,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:39:01,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 245 [2020-10-14 21:39:01,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:39:01,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:39:01,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:39:01,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:39:01,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 21:39:01,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:39:01,977 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:39:01,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2062782192] [2020-10-14 21:39:01,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:39:01,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:39:01,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866043825] [2020-10-14 21:39:01,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:39:01,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:39:01,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:39:01,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:39:01,983 INFO L87 Difference]: Start difference. First operand 7232 states and 9876 transitions. Second operand 7 states. [2020-10-14 21:39:20,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:39:20,940 INFO L93 Difference]: Finished difference Result 21879 states and 31031 transitions. [2020-10-14 21:39:20,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:39:20,942 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 164 [2020-10-14 21:39:20,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:39:21,008 INFO L225 Difference]: With dead ends: 21879 [2020-10-14 21:39:21,008 INFO L226 Difference]: Without dead ends: 14653 [2020-10-14 21:39:21,031 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:39:21,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14653 states. [2020-10-14 21:39:21,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14653 to 14431. [2020-10-14 21:39:21,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14431 states. [2020-10-14 21:39:21,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14431 states to 14431 states and 18604 transitions. [2020-10-14 21:39:21,393 INFO L78 Accepts]: Start accepts. Automaton has 14431 states and 18604 transitions. Word has length 164 [2020-10-14 21:39:21,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:39:21,394 INFO L479 AbstractCegarLoop]: Abstraction has 14431 states and 18604 transitions. [2020-10-14 21:39:21,394 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:39:21,395 INFO L276 IsEmpty]: Start isEmpty. Operand 14431 states and 18604 transitions. [2020-10-14 21:39:21,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2020-10-14 21:39:21,401 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:39:21,402 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:39:21,402 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 21:39:21,402 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:39:21,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:39:21,403 INFO L82 PathProgramCache]: Analyzing trace with hash -500881884, now seen corresponding path program 1 times [2020-10-14 21:39:21,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:39:21,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [246850666] [2020-10-14 21:39:21,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:39:21,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:39:21,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:39:21,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:39:22,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:39:25,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:39:25,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 271 [2020-10-14 21:39:25,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:39:25,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3628 [2020-10-14 21:39:25,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:39:25,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:39:25,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:39:25,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-14 21:39:25,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 21:39:25,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:39:25,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:39:25,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:39:25,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:39:25,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:39:25,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:39:25,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:39:25,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:39:25,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:39:25,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:39:25,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:39:25,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:39:25,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:39:25,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:39:25,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:39:25,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:39:25,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:39:25,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:39:25,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 21:39:25,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:39:25,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-14 21:39:25,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:39:25,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:39:25,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:39:25,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:39:25,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 21:39:25,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 21:39:25,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-14 21:39:25,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:39:25,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:39:25,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:39:25,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 21:39:25,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:39:25,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-14 21:39:25,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:39:25,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:39:25,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:39:25,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:39:25,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-14 21:39:25,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:39:25,837 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 194 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:39:25,838 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [246850666] [2020-10-14 21:39:25,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:39:25,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:39:25,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848945304] [2020-10-14 21:39:25,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:39:25,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:39:25,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:39:25,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:39:25,841 INFO L87 Difference]: Start difference. First operand 14431 states and 18604 transitions. Second operand 7 states. [2020-10-14 21:39:53,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:39:53,836 INFO L93 Difference]: Finished difference Result 42899 states and 57503 transitions. [2020-10-14 21:39:53,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:39:53,838 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 259 [2020-10-14 21:39:53,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:39:53,965 INFO L225 Difference]: With dead ends: 42899 [2020-10-14 21:39:53,965 INFO L226 Difference]: Without dead ends: 28474 [2020-10-14 21:39:54,107 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:39:54,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28474 states. [2020-10-14 21:39:54,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28474 to 28240. [2020-10-14 21:39:54,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28240 states. [2020-10-14 21:39:54,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28240 states to 28240 states and 37930 transitions. [2020-10-14 21:39:54,748 INFO L78 Accepts]: Start accepts. Automaton has 28240 states and 37930 transitions. Word has length 259 [2020-10-14 21:39:54,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:39:54,749 INFO L479 AbstractCegarLoop]: Abstraction has 28240 states and 37930 transitions. [2020-10-14 21:39:54,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:39:54,749 INFO L276 IsEmpty]: Start isEmpty. Operand 28240 states and 37930 transitions. [2020-10-14 21:39:54,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2020-10-14 21:39:54,756 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:39:54,757 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:39:54,757 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 21:39:54,758 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:39:54,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:39:54,758 INFO L82 PathProgramCache]: Analyzing trace with hash -1041839172, now seen corresponding path program 1 times [2020-10-14 21:39:54,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:39:54,758 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2023772094] [2020-10-14 21:39:54,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:39:54,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:39:54,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:39:54,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:39:55,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:39:58,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:39:59,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:39:59,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:39:59,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 280 [2020-10-14 21:39:59,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 21:39:59,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 21:39:59,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:39:59,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:39:59,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:39:59,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:39:59,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 21:39:59,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:39:59,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:39:59,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:39:59,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:39:59,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:39:59,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:39:59,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:39:59,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 21:39:59,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:39:59,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:39:59,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:39:59,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:39:59,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:39:59,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:40:00,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:40:00,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:40:00,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:40:00,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:40:00,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:40:00,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-14 21:40:00,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:40:00,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-10-14 21:40:00,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:40:00,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:40:00,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:40:00,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:40:00,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-14 21:40:00,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:40:00,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-10-14 21:40:00,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:40:00,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:40:00,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:40:00,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 21:40:00,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:40:00,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-14 21:40:00,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:40:00,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:40:00,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:40:00,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-14 21:40:00,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:40:00,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:40:00,656 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 104 proven. 84 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 21:40:00,657 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2023772094] [2020-10-14 21:40:00,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:40:00,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:40:00,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423973790] [2020-10-14 21:40:00,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:40:00,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:40:00,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:40:00,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:40:00,659 INFO L87 Difference]: Start difference. First operand 28240 states and 37930 transitions. Second operand 7 states. [2020-10-14 21:40:28,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:40:28,814 INFO L93 Difference]: Finished difference Result 65478 states and 88784 transitions. [2020-10-14 21:40:28,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:40:28,817 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 268 [2020-10-14 21:40:28,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:40:29,000 INFO L225 Difference]: With dead ends: 65478 [2020-10-14 21:40:29,000 INFO L226 Difference]: Without dead ends: 37244 [2020-10-14 21:40:29,066 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 21:40:29,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37244 states. [2020-10-14 21:40:29,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37244 to 36872. [2020-10-14 21:40:29,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36872 states. [2020-10-14 21:40:30,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36872 states to 36872 states and 48568 transitions. [2020-10-14 21:40:30,003 INFO L78 Accepts]: Start accepts. Automaton has 36872 states and 48568 transitions. Word has length 268 [2020-10-14 21:40:30,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:40:30,004 INFO L479 AbstractCegarLoop]: Abstraction has 36872 states and 48568 transitions. [2020-10-14 21:40:30,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:40:30,004 INFO L276 IsEmpty]: Start isEmpty. Operand 36872 states and 48568 transitions. [2020-10-14 21:40:30,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2020-10-14 21:40:30,011 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:40:30,011 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:40:30,011 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 21:40:30,012 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:40:30,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:40:30,012 INFO L82 PathProgramCache]: Analyzing trace with hash -369743591, now seen corresponding path program 1 times [2020-10-14 21:40:30,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:40:30,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1432758078] [2020-10-14 21:40:30,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:40:30,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:40:30,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:40:30,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:40:30,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:40:31,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:40:31,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:40:33,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:40:33,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 293 [2020-10-14 21:40:33,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 21:40:33,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3392 [2020-10-14 21:40:33,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:40:33,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:40:33,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 21:40:33,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:40:33,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 287 [2020-10-14 21:40:33,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:40:33,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:40:33,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:40:33,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:40:33,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:40:33,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:40:33,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:40:33,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 21:40:33,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:40:33,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:40:33,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:40:33,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:40:33,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:40:33,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:40:33,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:40:33,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:40:33,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:40:34,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:40:34,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:40:34,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 21:40:34,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:40:34,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 363 [2020-10-14 21:40:34,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:40:34,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:40:34,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:40:34,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:40:34,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 21:40:34,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 21:40:34,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-14 21:40:34,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:40:34,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:40:34,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:40:34,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:40:34,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 21:40:34,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:40:34,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 550 [2020-10-14 21:40:34,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:40:34,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:40:34,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:40:34,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:40:34,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 21:40:34,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:40:35,254 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 96 proven. 11 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-14 21:40:35,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1432758078] [2020-10-14 21:40:35,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:40:35,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:40:35,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795259257] [2020-10-14 21:40:35,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:40:35,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:40:35,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:40:35,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:40:35,259 INFO L87 Difference]: Start difference. First operand 36872 states and 48568 transitions. Second operand 7 states. [2020-10-14 21:40:39,303 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2020-10-14 21:41:24,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:41:24,148 INFO L93 Difference]: Finished difference Result 98331 states and 136752 transitions. [2020-10-14 21:41:24,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 21:41:24,153 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 281 [2020-10-14 21:41:24,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:41:24,390 INFO L225 Difference]: With dead ends: 98331 [2020-10-14 21:41:24,390 INFO L226 Difference]: Without dead ends: 62268 [2020-10-14 21:41:24,477 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-10-14 21:41:24,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62268 states.