/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem06_label21.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 19:56:03,332 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 19:56:03,335 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 19:56:03,359 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 19:56:03,359 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 19:56:03,360 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 19:56:03,361 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 19:56:03,363 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 19:56:03,365 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 19:56:03,366 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 19:56:03,367 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 19:56:03,369 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 19:56:03,369 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 19:56:03,372 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 19:56:03,373 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 19:56:03,374 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 19:56:03,377 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 19:56:03,381 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 19:56:03,383 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 19:56:03,384 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 19:56:03,387 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 19:56:03,389 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 19:56:03,392 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 19:56:03,393 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 19:56:03,400 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 19:56:03,400 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 19:56:03,400 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 19:56:03,403 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 19:56:03,404 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 19:56:03,405 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 19:56:03,405 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 19:56:03,405 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 19:56:03,408 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 19:56:03,409 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 19:56:03,412 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 19:56:03,413 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 19:56:03,413 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 19:56:03,414 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 19:56:03,414 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 19:56:03,415 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 19:56:03,416 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 19:56:03,417 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 19:56:03,468 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 19:56:03,468 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 19:56:03,473 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 19:56:03,473 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 19:56:03,473 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 19:56:03,473 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 19:56:03,473 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 19:56:03,474 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 19:56:03,474 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 19:56:03,474 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 19:56:03,474 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 19:56:03,474 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 19:56:03,475 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 19:56:03,475 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 19:56:03,476 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 19:56:03,477 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 19:56:03,477 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 19:56:03,477 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 19:56:03,477 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 19:56:03,477 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 19:56:03,478 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 19:56:03,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 19:56:03,478 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 19:56:03,478 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 19:56:03,478 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 19:56:03,479 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 19:56:03,479 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 19:56:03,479 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 19:56:03,479 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 19:56:03,479 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 19:56:03,810 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 19:56:03,826 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 19:56:03,830 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 19:56:03,831 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 19:56:03,832 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 19:56:03,832 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label21.c [2020-10-14 19:56:03,893 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/46e6c01ef/2f26d7ce75614ee69912f859cf917785/FLAGe6f4f671f [2020-10-14 19:56:05,002 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 19:56:05,003 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label21.c [2020-10-14 19:56:05,073 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/46e6c01ef/2f26d7ce75614ee69912f859cf917785/FLAGe6f4f671f [2020-10-14 19:56:05,213 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/46e6c01ef/2f26d7ce75614ee69912f859cf917785 [2020-10-14 19:56:05,224 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 19:56:05,227 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 19:56:05,231 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 19:56:05,231 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 19:56:05,235 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 19:56:05,237 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:56:05" (1/1) ... [2020-10-14 19:56:05,241 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@688a0e89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:56:05, skipping insertion in model container [2020-10-14 19:56:05,242 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:56:05" (1/1) ... [2020-10-14 19:56:05,251 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 19:56:05,492 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 19:56:07,614 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:56:07,623 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 19:56:08,738 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:56:08,789 INFO L208 MainTranslator]: Completed translation [2020-10-14 19:56:08,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:56:08 WrapperNode [2020-10-14 19:56:08,789 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 19:56:08,790 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 19:56:08,791 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 19:56:08,791 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 19:56:08,805 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:56:08" (1/1) ... [2020-10-14 19:56:08,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:56:08" (1/1) ... [2020-10-14 19:56:08,873 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:56:08" (1/1) ... [2020-10-14 19:56:08,873 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:56:08" (1/1) ... [2020-10-14 19:56:09,056 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:56:08" (1/1) ... [2020-10-14 19:56:09,092 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:56:08" (1/1) ... [2020-10-14 19:56:09,137 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:56:08" (1/1) ... [2020-10-14 19:56:09,193 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 19:56:09,194 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 19:56:09,194 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 19:56:09,194 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 19:56:09,195 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:56:08" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 19:56:09,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 19:56:09,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 19:56:09,273 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 19:56:09,274 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 19:56:09,274 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 19:56:09,274 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 19:56:09,274 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-14 19:56:09,274 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 19:56:09,275 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 19:56:09,275 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 19:56:09,275 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 19:56:09,275 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 19:56:09,275 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-14 19:56:09,275 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 19:56:09,276 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 19:56:09,276 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 19:56:09,276 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 19:56:09,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 19:56:09,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 19:56:16,286 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 19:56:16,286 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 19:56:16,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:56:16 BoogieIcfgContainer [2020-10-14 19:56:16,298 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 19:56:16,299 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 19:56:16,299 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 19:56:16,303 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 19:56:16,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:56:05" (1/3) ... [2020-10-14 19:56:16,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54eb9195 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:56:16, skipping insertion in model container [2020-10-14 19:56:16,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:56:08" (2/3) ... [2020-10-14 19:56:16,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54eb9195 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:56:16, skipping insertion in model container [2020-10-14 19:56:16,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:56:16" (3/3) ... [2020-10-14 19:56:16,306 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem06_label21.c [2020-10-14 19:56:16,317 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 19:56:16,333 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 19:56:16,351 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 19:56:16,385 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 19:56:16,385 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 19:56:16,385 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 19:56:16,386 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 19:56:16,386 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 19:56:16,386 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 19:56:16,386 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 19:56:16,386 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 19:56:16,427 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states. [2020-10-14 19:56:16,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 946 [2020-10-14 19:56:16,503 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:56:16,505 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:56:16,506 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:56:16,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:56:16,513 INFO L82 PathProgramCache]: Analyzing trace with hash -255361808, now seen corresponding path program 1 times [2020-10-14 19:56:16,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:56:16,522 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [987352215] [2020-10-14 19:56:16,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:56:17,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:56:18,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:56:20,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:56:22,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:56:22,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 961 [2020-10-14 19:56:22,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:56:22,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-14 19:56:22,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:56:22,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:56:22,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 19:56:22,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:56:22,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 955 [2020-10-14 19:56:22,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 19:56:23,942 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:56:23,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:56:23,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:56:23,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:56:23,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:56:23,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:56:23,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:56:23,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 19:56:23,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:56:23,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:56:23,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:56:23,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:56:23,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:56:23,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:56:25,133 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 19:56:25,134 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [987352215] [2020-10-14 19:56:25,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 19:56:25,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 19:56:25,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092489426] [2020-10-14 19:56:25,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:56:25,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:56:25,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:56:25,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:56:25,161 INFO L87 Difference]: Start difference. First operand 1315 states. Second operand 5 states. [2020-10-14 19:56:25,358 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:56:25,637 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:56:46,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:56:46,424 INFO L93 Difference]: Finished difference Result 4858 states and 9164 transitions. [2020-10-14 19:56:46,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 19:56:46,426 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 945 [2020-10-14 19:56:46,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:56:46,500 INFO L225 Difference]: With dead ends: 4858 [2020-10-14 19:56:46,500 INFO L226 Difference]: Without dead ends: 3475 [2020-10-14 19:56:46,515 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:56:46,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3475 states. [2020-10-14 19:56:46,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3475 to 3403. [2020-10-14 19:56:46,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3403 states. [2020-10-14 19:56:46,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3403 states to 3403 states and 5910 transitions. [2020-10-14 19:56:46,736 INFO L78 Accepts]: Start accepts. Automaton has 3403 states and 5910 transitions. Word has length 945 [2020-10-14 19:56:46,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:56:46,739 INFO L479 AbstractCegarLoop]: Abstraction has 3403 states and 5910 transitions. [2020-10-14 19:56:46,739 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:56:46,740 INFO L276 IsEmpty]: Start isEmpty. Operand 3403 states and 5910 transitions. [2020-10-14 19:56:46,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 963 [2020-10-14 19:56:46,782 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:56:46,784 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:56:46,784 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 19:56:46,784 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:56:46,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:56:46,785 INFO L82 PathProgramCache]: Analyzing trace with hash -1688250905, now seen corresponding path program 1 times [2020-10-14 19:56:46,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:56:46,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [702527297] [2020-10-14 19:56:46,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:56:47,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:56:47,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:56:48,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:56:52,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:56:52,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 980 [2020-10-14 19:56:52,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:56:52,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5241 [2020-10-14 19:56:52,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:56:52,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:56:52,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 19:56:52,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 19:56:52,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 952 [2020-10-14 19:56:52,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:56:53,403 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:56:53,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:56:53,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:56:53,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:56:53,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:56:53,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:56:53,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:56:53,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 19:56:53,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:56:53,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:56:53,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:56:53,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:56:53,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:56:53,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:56:53,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:56:53,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:56:53,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:56:53,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:56:53,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 19:56:53,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:56:53,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 19:56:53,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:56:53,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:56:53,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:56:53,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:56:53,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 19:56:53,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:56:54,709 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:56:54,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [702527297] [2020-10-14 19:56:54,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:56:54,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:56:54,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998598783] [2020-10-14 19:56:54,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:56:54,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:56:54,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:56:54,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:56:54,714 INFO L87 Difference]: Start difference. First operand 3403 states and 5910 transitions. Second operand 5 states. [2020-10-14 19:56:54,951 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:57:11,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:57:11,706 INFO L93 Difference]: Finished difference Result 9944 states and 17510 transitions. [2020-10-14 19:57:11,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:57:11,707 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 962 [2020-10-14 19:57:11,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:57:11,745 INFO L225 Difference]: With dead ends: 9944 [2020-10-14 19:57:11,745 INFO L226 Difference]: Without dead ends: 6547 [2020-10-14 19:57:11,754 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:57:11,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6547 states. [2020-10-14 19:57:11,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6547 to 6534. [2020-10-14 19:57:11,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6534 states. [2020-10-14 19:57:11,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6534 states to 6534 states and 10675 transitions. [2020-10-14 19:57:11,980 INFO L78 Accepts]: Start accepts. Automaton has 6534 states and 10675 transitions. Word has length 962 [2020-10-14 19:57:11,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:57:11,982 INFO L479 AbstractCegarLoop]: Abstraction has 6534 states and 10675 transitions. [2020-10-14 19:57:11,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:57:11,982 INFO L276 IsEmpty]: Start isEmpty. Operand 6534 states and 10675 transitions. [2020-10-14 19:57:12,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 974 [2020-10-14 19:57:12,011 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:57:12,012 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:57:12,013 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 19:57:12,013 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:57:12,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:57:12,014 INFO L82 PathProgramCache]: Analyzing trace with hash -932536935, now seen corresponding path program 1 times [2020-10-14 19:57:12,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:57:12,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1007240106] [2020-10-14 19:57:12,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:57:12,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:57:12,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:57:12,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:57:15,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:57:17,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:57:17,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 993 [2020-10-14 19:57:17,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:57:17,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5089 [2020-10-14 19:57:17,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:57:17,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:57:17,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 19:57:17,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:57:17,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 19:57:17,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:57:17,609 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:57:17,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:57:17,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:57:17,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:57:17,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:57:17,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:57:17,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:57:17,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 19:57:17,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:57:17,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:57:17,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:57:17,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:57:17,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:57:17,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:57:17,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:57:17,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:57:17,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:57:17,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:57:17,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:57:17,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 19:57:17,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:57:17,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 19:57:17,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:57:17,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:57:17,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:57:17,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:57:17,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 19:57:17,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:57:17,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-14 19:57:17,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:57:17,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:57:17,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:57:17,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 19:57:17,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:57:17,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-14 19:57:17,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:57:17,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:57:17,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:57:17,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:57:17,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 19:57:17,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:57:19,207 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 19:57:19,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1007240106] [2020-10-14 19:57:19,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:57:19,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 19:57:19,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710185973] [2020-10-14 19:57:19,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 19:57:19,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:57:19,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 19:57:19,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-14 19:57:19,219 INFO L87 Difference]: Start difference. First operand 6534 states and 10675 transitions. Second operand 10 states. [2020-10-14 19:57:19,416 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-14 19:57:19,848 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 19:57:22,307 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:57:47,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:57:47,604 INFO L93 Difference]: Finished difference Result 26147 states and 44773 transitions. [2020-10-14 19:57:47,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 19:57:47,605 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 973 [2020-10-14 19:57:47,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:57:47,705 INFO L225 Difference]: With dead ends: 26147 [2020-10-14 19:57:47,712 INFO L226 Difference]: Without dead ends: 19619 [2020-10-14 19:57:47,738 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2020-10-14 19:57:47,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19619 states. [2020-10-14 19:57:48,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19619 to 19262. [2020-10-14 19:57:48,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19262 states. [2020-10-14 19:57:48,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19262 states to 19262 states and 30857 transitions. [2020-10-14 19:57:48,356 INFO L78 Accepts]: Start accepts. Automaton has 19262 states and 30857 transitions. Word has length 973 [2020-10-14 19:57:48,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:57:48,357 INFO L479 AbstractCegarLoop]: Abstraction has 19262 states and 30857 transitions. [2020-10-14 19:57:48,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 19:57:48,357 INFO L276 IsEmpty]: Start isEmpty. Operand 19262 states and 30857 transitions. [2020-10-14 19:57:48,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 981 [2020-10-14 19:57:48,431 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:57:48,432 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:57:48,433 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 19:57:48,433 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:57:48,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:57:48,433 INFO L82 PathProgramCache]: Analyzing trace with hash -493773513, now seen corresponding path program 1 times [2020-10-14 19:57:48,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:57:48,435 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [163631024] [2020-10-14 19:57:48,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:57:48,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:57:48,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:57:48,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:57:53,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:57:53,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1000 [2020-10-14 19:57:53,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:57:53,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-14 19:57:53,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:57:53,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:57:53,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:57:53,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 19:57:53,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 19:57:53,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:57:53,905 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:57:53,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:57:53,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:57:53,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:57:53,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:57:53,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:57:53,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:57:53,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 19:57:53,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:57:53,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:57:53,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:57:53,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:57:53,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:57:53,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:57:54,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:57:54,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:57:54,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:57:54,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:57:54,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 19:57:54,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:57:54,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 19:57:54,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:57:54,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:57:54,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:57:54,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:57:54,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 19:57:54,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:57:54,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 19:57:54,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:57:54,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:57:54,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:57:54,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 19:57:54,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:57:54,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-14 19:57:54,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:57:54,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:57:54,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:57:54,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:57:54,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 19:57:54,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:57:54,573 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 41 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 19:57:54,573 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [163631024] [2020-10-14 19:57:54,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:57:54,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:57:54,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690005926] [2020-10-14 19:57:54,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:57:54,576 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:57:54,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:57:54,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:57:54,576 INFO L87 Difference]: Start difference. First operand 19262 states and 30857 transitions. Second operand 7 states. [2020-10-14 19:57:54,784 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:57:55,126 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:58:23,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:58:23,755 INFO L93 Difference]: Finished difference Result 64592 states and 108139 transitions. [2020-10-14 19:58:23,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 19:58:23,756 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 980 [2020-10-14 19:58:23,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:58:23,963 INFO L225 Difference]: With dead ends: 64592 [2020-10-14 19:58:23,963 INFO L226 Difference]: Without dead ends: 45336 [2020-10-14 19:58:24,022 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 19:58:24,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45336 states. [2020-10-14 19:58:25,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45336 to 45256. [2020-10-14 19:58:25,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45256 states. [2020-10-14 19:58:25,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45256 states to 45256 states and 75480 transitions. [2020-10-14 19:58:25,335 INFO L78 Accepts]: Start accepts. Automaton has 45256 states and 75480 transitions. Word has length 980 [2020-10-14 19:58:25,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:58:25,336 INFO L479 AbstractCegarLoop]: Abstraction has 45256 states and 75480 transitions. [2020-10-14 19:58:25,336 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:58:25,336 INFO L276 IsEmpty]: Start isEmpty. Operand 45256 states and 75480 transitions. [2020-10-14 19:58:25,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 982 [2020-10-14 19:58:25,524 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:58:25,529 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:58:25,530 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 19:58:25,530 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:58:25,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:58:25,530 INFO L82 PathProgramCache]: Analyzing trace with hash 1160957609, now seen corresponding path program 1 times [2020-10-14 19:58:25,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:58:25,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1737386156] [2020-10-14 19:58:25,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:58:25,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:58:25,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:58:25,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:58:28,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:58:29,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:58:30,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:58:30,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1001 [2020-10-14 19:58:30,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:58:30,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5137 [2020-10-14 19:58:30,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:58:30,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:58:30,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 19:58:30,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:58:30,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 19:58:30,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:58:31,033 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:58:31,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:58:31,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:58:31,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:58:31,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:58:31,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:58:31,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:58:31,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 19:58:31,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:58:31,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:58:31,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:58:31,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:58:31,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:58:31,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:58:31,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:58:31,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:58:31,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:58:31,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:58:31,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 19:58:31,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:58:31,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-14 19:58:31,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:58:31,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:58:31,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:58:31,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:58:31,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 19:58:31,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:58:31,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-14 19:58:31,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:58:31,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:58:31,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:58:31,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 19:58:31,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:58:31,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-14 19:58:31,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:58:31,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:58:31,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:58:31,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:58:31,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 19:58:31,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:58:32,315 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 19:58:32,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1737386156] [2020-10-14 19:58:32,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:58:32,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:58:32,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786719220] [2020-10-14 19:58:32,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 19:58:32,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:58:32,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 19:58:32,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:58:32,318 INFO L87 Difference]: Start difference. First operand 45256 states and 75480 transitions. Second operand 8 states. [2020-10-14 19:58:32,471 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:58:33,278 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:58:50,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:58:50,133 INFO L93 Difference]: Finished difference Result 138081 states and 252645 transitions. [2020-10-14 19:58:50,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 19:58:50,134 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 981 [2020-10-14 19:58:50,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:58:50,631 INFO L225 Difference]: With dead ends: 138081 [2020-10-14 19:58:50,632 INFO L226 Difference]: Without dead ends: 92831 [2020-10-14 19:58:51,056 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-10-14 19:58:51,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92831 states. [2020-10-14 19:58:53,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92831 to 91830. [2020-10-14 19:58:53,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91830 states. [2020-10-14 19:58:53,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91830 states to 91830 states and 156488 transitions. [2020-10-14 19:58:53,276 INFO L78 Accepts]: Start accepts. Automaton has 91830 states and 156488 transitions. Word has length 981 [2020-10-14 19:58:53,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:58:53,277 INFO L479 AbstractCegarLoop]: Abstraction has 91830 states and 156488 transitions. [2020-10-14 19:58:53,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 19:58:53,277 INFO L276 IsEmpty]: Start isEmpty. Operand 91830 states and 156488 transitions. [2020-10-14 19:58:53,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 991 [2020-10-14 19:58:53,649 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:58:53,650 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:58:53,650 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 19:58:53,650 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:58:53,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:58:53,651 INFO L82 PathProgramCache]: Analyzing trace with hash 588700138, now seen corresponding path program 1 times [2020-10-14 19:58:53,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:58:53,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1357484746] [2020-10-14 19:58:53,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:58:53,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:58:53,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:58:54,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:58:58,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:58:58,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1010 [2020-10-14 19:58:58,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:58:58,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 19:58:58,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:58:58,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:58:58,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:58:58,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 19:58:58,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 19:58:58,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:58:59,175 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:58:59,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:58:59,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:58:59,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:58:59,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:58:59,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:58:59,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:58:59,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 19:58:59,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:58:59,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:58:59,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:58:59,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:58:59,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:58:59,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:58:59,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:58:59,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:58:59,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:58:59,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:58:59,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 19:58:59,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:58:59,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 19:58:59,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:58:59,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:58:59,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:58:59,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:58:59,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 19:58:59,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:58:59,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 19:58:59,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:58:59,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:58:59,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:58:59,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 19:58:59,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:58:59,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-14 19:58:59,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:58:59,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:58:59,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:58:59,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:58:59,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 19:58:59,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:59:00,016 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 48 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 19:59:00,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1357484746] [2020-10-14 19:59:00,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:59:00,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 19:59:00,017 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533972170] [2020-10-14 19:59:00,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 19:59:00,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:59:00,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 19:59:00,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:59:00,019 INFO L87 Difference]: Start difference. First operand 91830 states and 156488 transitions. Second operand 8 states. [2020-10-14 19:59:00,170 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:59:00,391 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:59:00,838 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:59:30,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:59:30,107 INFO L93 Difference]: Finished difference Result 367884 states and 792511 transitions. [2020-10-14 19:59:30,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 19:59:30,109 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 990 [2020-10-14 19:59:30,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:59:32,205 INFO L225 Difference]: With dead ends: 367884 [2020-10-14 19:59:32,205 INFO L226 Difference]: Without dead ends: 276060 [2020-10-14 19:59:32,487 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 19:59:32,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276060 states.