/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 --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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/systemc/transmitter.01.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:37:32,216 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:37:32,220 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:37:32,247 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:37:32,247 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:37:32,249 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:37:32,250 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:37:32,253 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:37:32,255 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:37:32,256 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:37:32,257 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:37:32,259 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:37:32,259 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:37:32,260 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:37:32,262 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:37:32,263 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:37:32,264 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:37:32,265 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:37:32,267 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:37:32,269 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:37:32,271 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:37:32,275 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:37:32,276 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:37:32,280 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:37:32,285 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:37:32,285 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:37:32,285 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:37:32,286 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:37:32,288 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:37:32,289 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:37:32,289 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:37:32,293 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:37:32,294 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:37:32,296 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:37:32,297 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:37:32,298 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:37:32,299 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:37:32,299 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:37:32,299 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:37:32,301 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:37:32,303 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:37:32,303 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 [2020-09-21 12:37:32,353 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:37:32,353 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:37:32,355 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:37:32,355 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:37:32,356 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:37:32,356 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:37:32,356 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:37:32,357 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:37:32,357 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:37:32,357 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:37:32,358 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:37:32,358 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:37:32,359 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:37:32,359 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:37:32,359 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:37:32,360 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:37:32,360 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:37:32,360 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:37:32,360 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:37:32,360 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:37:32,361 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:37:32,361 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:37:32,361 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:37:32,361 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:37:32,361 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:37:32,362 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:37:32,362 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:37:32,362 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:37:32,362 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:37:32,362 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.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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-21 12:37:32,802 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:37:32,819 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:37:32,823 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:37:32,825 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:37:32,825 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:37:32,827 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/transmitter.01.cil.c [2020-09-21 12:37:32,911 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/571789b0d/bd4cc2fe6630431199940f4505ca5dbc/FLAG8df49fc72 [2020-09-21 12:37:33,509 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:37:33,510 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/transmitter.01.cil.c [2020-09-21 12:37:33,522 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/571789b0d/bd4cc2fe6630431199940f4505ca5dbc/FLAG8df49fc72 [2020-09-21 12:37:33,826 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/571789b0d/bd4cc2fe6630431199940f4505ca5dbc [2020-09-21 12:37:33,839 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:37:33,848 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:37:33,851 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:37:33,852 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:37:33,856 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:37:33,857 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:37:33" (1/1) ... [2020-09-21 12:37:33,862 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d781438 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:37:33, skipping insertion in model container [2020-09-21 12:37:33,862 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:37:33" (1/1) ... [2020-09-21 12:37:33,872 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:37:33,934 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:37:34,176 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:37:34,184 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:37:34,221 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:37:34,242 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:37:34,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:37:34 WrapperNode [2020-09-21 12:37:34,242 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:37:34,243 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:37:34,243 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:37:34,244 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:37:34,337 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:37:34" (1/1) ... [2020-09-21 12:37:34,337 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:37:34" (1/1) ... [2020-09-21 12:37:34,345 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:37:34" (1/1) ... [2020-09-21 12:37:34,345 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:37:34" (1/1) ... [2020-09-21 12:37:34,353 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:37:34" (1/1) ... [2020-09-21 12:37:34,364 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:37:34" (1/1) ... [2020-09-21 12:37:34,367 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:37:34" (1/1) ... [2020-09-21 12:37:34,370 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:37:34,371 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:37:34,371 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:37:34,371 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:37:34,372 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:37:34" (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 [2020-09-21 12:37:34,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:37:34,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:37:34,449 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-09-21 12:37:34,449 INFO L138 BoogieDeclarations]: Found implementation of procedure master [2020-09-21 12:37:34,449 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit1 [2020-09-21 12:37:34,449 INFO L138 BoogieDeclarations]: Found implementation of procedure is_master_triggered [2020-09-21 12:37:34,450 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit1_triggered [2020-09-21 12:37:34,450 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2020-09-21 12:37:34,451 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2020-09-21 12:37:34,451 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2020-09-21 12:37:34,451 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-09-21 12:37:34,452 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2020-09-21 12:37:34,452 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2020-09-21 12:37:34,452 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2020-09-21 12:37:34,452 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2020-09-21 12:37:34,452 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2020-09-21 12:37:34,452 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2020-09-21 12:37:34,453 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2020-09-21 12:37:34,453 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2020-09-21 12:37:34,453 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-09-21 12:37:34,453 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:37:34,454 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:37:34,454 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 12:37:34,454 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-09-21 12:37:34,454 INFO L130 BoogieDeclarations]: Found specification of procedure is_master_triggered [2020-09-21 12:37:34,454 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit1_triggered [2020-09-21 12:37:34,455 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2020-09-21 12:37:34,455 INFO L130 BoogieDeclarations]: Found specification of procedure master [2020-09-21 12:37:34,455 INFO L130 BoogieDeclarations]: Found specification of procedure transmit1 [2020-09-21 12:37:34,455 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2020-09-21 12:37:34,455 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2020-09-21 12:37:34,456 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2020-09-21 12:37:34,456 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-09-21 12:37:34,456 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2020-09-21 12:37:34,456 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2020-09-21 12:37:34,456 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2020-09-21 12:37:34,457 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2020-09-21 12:37:34,457 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2020-09-21 12:37:34,457 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2020-09-21 12:37:34,457 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2020-09-21 12:37:34,457 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-09-21 12:37:34,457 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:37:34,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:37:34,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:37:34,988 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:37:34,989 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-21 12:37:34,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:37:34 BoogieIcfgContainer [2020-09-21 12:37:34,998 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:37:35,000 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:37:35,001 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:37:35,004 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:37:35,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:37:33" (1/3) ... [2020-09-21 12:37:35,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@673d398a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:37:35, skipping insertion in model container [2020-09-21 12:37:35,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:37:34" (2/3) ... [2020-09-21 12:37:35,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@673d398a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:37:35, skipping insertion in model container [2020-09-21 12:37:35,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:37:34" (3/3) ... [2020-09-21 12:37:35,012 INFO L109 eAbstractionObserver]: Analyzing ICFG transmitter.01.cil.c [2020-09-21 12:37:35,022 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:37:35,033 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:37:35,055 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:37:35,086 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:37:35,086 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:37:35,086 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:37:35,086 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:37:35,087 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:37:35,087 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:37:35,087 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:37:35,087 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:37:35,113 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states. [2020-09-21 12:37:35,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-09-21 12:37:35,124 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:37:35,126 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] [2020-09-21 12:37:35,126 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:37:35,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:37:35,133 INFO L82 PathProgramCache]: Analyzing trace with hash -1024647557, now seen corresponding path program 1 times [2020-09-21 12:37:35,142 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:37:35,142 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1482619946] [2020-09-21 12:37:35,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:37:35,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:35,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:35,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:35,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:35,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:36,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:36,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-09-21 12:37:36,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-21 12:37:36,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1006 [2020-09-21 12:37:36,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:36,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:37:36,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-21 12:37:36,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-21 12:37:36,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-21 12:37:36,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:37:36,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:36,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:36,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:36,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:37:36,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:36,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:37:36,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:36,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:37:36,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:37:36,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:37:36,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:37:36,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:37:36,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:36,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:36,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:36,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:37:36,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:36,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:37:36,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:36,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:37:36,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:37:36,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:37:36,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:37:36,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:37:36,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:36,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:36,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:36,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:37:36,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:36,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:37:36,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:36,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:37:36,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:37:36,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:37:36,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:37:36,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-21 12:37:36,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:36,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:36,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:36,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:37:36,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:36,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:37:36,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:36,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:37:36,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:37:36,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:37:36,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:37:36,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-21 12:37:36,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:36,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:36,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:36,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:37:36,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:36,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 12:37:36,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:36,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:37:36,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:37:36,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:37:36,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:37:36,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-21 12:37:36,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:36,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:36,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:36,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:36,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-21 12:37:36,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:37:36,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-21 12:37:36,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:36,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:37:36,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:37:36,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-21 12:37:36,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:37:36,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:37:36,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:36,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:36,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:36,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 12:37:36,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:36,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:37:36,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:36,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:37:36,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:37:36,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:37:36,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:37:36,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 12:37:36,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:36,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:36,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:36,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 12:37:36,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:36,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:37:36,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:36,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:37:36,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:37:36,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:37:36,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:37:36,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-21 12:37:36,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:36,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:36,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:36,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:37:36,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:36,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-21 12:37:36,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:36,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:37:36,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:37:36,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-21 12:37:36,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:37:36,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-21 12:37:36,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:36,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:36,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:36,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:37:36,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:36,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:37:36,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:36,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:37:36,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 12:37:36,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:37:36,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:37:36,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:37:36,686 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1482619946] [2020-09-21 12:37:36,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:37:36,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 12:37:36,690 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789177284] [2020-09-21 12:37:36,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 12:37:36,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:37:36,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 12:37:36,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:37:36,718 INFO L87 Difference]: Start difference. First operand 139 states. Second operand 8 states. [2020-09-21 12:37:39,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:37:39,587 INFO L93 Difference]: Finished difference Result 578 states and 925 transitions. [2020-09-21 12:37:39,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-21 12:37:39,590 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 75 [2020-09-21 12:37:39,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:37:39,615 INFO L225 Difference]: With dead ends: 578 [2020-09-21 12:37:39,615 INFO L226 Difference]: Without dead ends: 442 [2020-09-21 12:37:39,623 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=118, Invalid=344, Unknown=0, NotChecked=0, Total=462 [2020-09-21 12:37:39,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2020-09-21 12:37:39,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 337. [2020-09-21 12:37:39,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-09-21 12:37:39,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 463 transitions. [2020-09-21 12:37:39,758 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 463 transitions. Word has length 75 [2020-09-21 12:37:39,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:37:39,759 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 463 transitions. [2020-09-21 12:37:39,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 12:37:39,759 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 463 transitions. [2020-09-21 12:37:39,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-09-21 12:37:39,765 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:37:39,765 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] [2020-09-21 12:37:39,765 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:37:39,766 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:37:39,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:37:39,766 INFO L82 PathProgramCache]: Analyzing trace with hash -210668165, now seen corresponding path program 1 times [2020-09-21 12:37:39,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:37:39,767 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1532402637] [2020-09-21 12:37:39,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:37:39,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:39,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:39,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:39,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:40,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:40,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:40,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:40,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:40,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:40,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:40,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:40,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-09-21 12:37:40,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-21 12:37:40,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1011 [2020-09-21 12:37:40,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:40,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:37:40,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-09-21 12:37:40,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:37:40,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:37:40,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:37:40,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:40,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:40,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:40,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:37:40,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:40,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:37:40,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:40,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:37:40,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:37:40,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:37:40,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:37:40,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:37:40,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:40,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:40,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:40,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:37:40,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:40,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:37:40,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:40,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:37:40,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:37:40,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:37:40,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:37:40,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:37:40,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:40,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:40,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:40,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:37:40,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:40,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:37:40,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:40,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:37:40,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:37:40,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:37:40,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:37:40,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-21 12:37:40,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:40,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:40,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:40,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:37:40,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:40,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:37:40,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:40,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:37:40,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:37:40,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:37:40,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:37:40,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-21 12:37:40,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:40,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:40,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:40,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:37:40,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:40,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:37:40,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:40,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:37:40,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:37:40,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:37:40,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:37:40,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-21 12:37:40,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:40,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:40,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:40,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-21 12:37:40,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:40,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 12:37:40,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:40,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:37:40,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:37:40,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:37:40,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:37:40,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:37:40,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:40,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:40,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:40,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 12:37:40,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:40,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:37:40,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:40,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:37:40,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:37:40,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:37:40,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:37:40,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 12:37:40,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:40,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:40,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:40,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 12:37:40,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:40,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:37:40,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:40,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:37:40,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:37:40,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:37:40,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:37:40,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-21 12:37:40,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:40,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:40,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:40,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:37:40,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:40,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:37:40,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:40,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:37:40,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:37:40,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:37:40,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:37:40,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-21 12:37:40,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:41,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:41,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:41,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:37:41,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:41,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:37:41,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:41,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:37:41,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:37:41,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 12:37:41,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:37:41,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:37:41,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1532402637] [2020-09-21 12:37:41,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:37:41,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-21 12:37:41,017 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340362865] [2020-09-21 12:37:41,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:37:41,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:37:41,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:37:41,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:37:41,020 INFO L87 Difference]: Start difference. First operand 337 states and 463 transitions. Second operand 7 states. [2020-09-21 12:37:42,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:37:42,364 INFO L93 Difference]: Finished difference Result 1037 states and 1515 transitions. [2020-09-21 12:37:42,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-21 12:37:42,367 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 75 [2020-09-21 12:37:42,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:37:42,387 INFO L225 Difference]: With dead ends: 1037 [2020-09-21 12:37:42,388 INFO L226 Difference]: Without dead ends: 726 [2020-09-21 12:37:42,392 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-09-21 12:37:42,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2020-09-21 12:37:42,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 631. [2020-09-21 12:37:42,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 631 states. [2020-09-21 12:37:42,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 917 transitions. [2020-09-21 12:37:42,518 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 917 transitions. Word has length 75 [2020-09-21 12:37:42,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:37:42,518 INFO L479 AbstractCegarLoop]: Abstraction has 631 states and 917 transitions. [2020-09-21 12:37:42,518 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:37:42,519 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 917 transitions. [2020-09-21 12:37:42,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-21 12:37:42,526 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:37:42,526 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] [2020-09-21 12:37:42,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:37:42,526 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:37:42,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:37:42,530 INFO L82 PathProgramCache]: Analyzing trace with hash -1816613664, now seen corresponding path program 1 times [2020-09-21 12:37:42,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:37:42,530 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [177680512] [2020-09-21 12:37:42,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:37:42,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:42,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:42,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:42,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:42,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:43,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:43,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:43,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:43,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-09-21 12:37:43,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-21 12:37:43,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1004 [2020-09-21 12:37:43,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:43,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:37:43,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:37:43,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-21 12:37:43,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:37:43,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:37:43,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:43,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:43,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:43,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:37:43,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:43,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:37:43,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:43,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:37:43,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:37:43,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:37:43,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:37:43,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:37:43,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:43,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:43,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:43,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:37:43,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:43,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:37:43,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:43,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:37:43,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:37:43,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:37:43,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:37:43,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:37:43,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:43,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:43,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:43,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:37:43,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:43,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:37:43,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:43,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:37:43,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:37:43,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:37:43,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:37:43,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-21 12:37:43,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:43,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:43,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:43,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:37:43,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:43,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:37:43,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:43,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:37:43,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:37:43,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:37:43,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:37:43,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-21 12:37:43,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:43,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:43,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:43,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:37:43,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:43,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:37:43,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:43,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:37:43,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:37:43,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:37:43,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:37:43,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-21 12:37:43,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:43,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:43,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:43,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-21 12:37:43,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:43,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-21 12:37:43,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:43,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:37:43,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 12:37:43,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-21 12:37:43,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:37:43,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:37:43,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:43,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:43,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:43,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 12:37:43,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:43,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:37:43,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:43,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:37:43,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:37:43,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 12:37:43,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:37:43,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 12:37:43,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:43,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:43,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:43,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 12:37:43,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:43,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-21 12:37:43,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:43,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:37:43,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:37:43,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 12:37:43,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-21 12:37:43,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-21 12:37:43,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:43,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:43,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:43,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:37:43,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:43,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:37:43,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:43,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:37:43,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 12:37:43,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:37:43,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:37:43,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-21 12:37:43,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:43,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:43,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:43,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:37:43,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:43,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:37:43,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:43,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:37:43,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 12:37:43,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:37:43,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:37:43,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:37:43,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [177680512] [2020-09-21 12:37:43,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:37:43,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 12:37:43,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752866183] [2020-09-21 12:37:43,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 12:37:43,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:37:43,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 12:37:43,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:37:43,803 INFO L87 Difference]: Start difference. First operand 631 states and 917 transitions. Second operand 8 states. [2020-09-21 12:37:45,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:37:45,428 INFO L93 Difference]: Finished difference Result 1728 states and 2530 transitions. [2020-09-21 12:37:45,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-21 12:37:45,429 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 76 [2020-09-21 12:37:45,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:37:45,443 INFO L225 Difference]: With dead ends: 1728 [2020-09-21 12:37:45,444 INFO L226 Difference]: Without dead ends: 1128 [2020-09-21 12:37:45,448 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2020-09-21 12:37:45,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1128 states. [2020-09-21 12:37:45,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1128 to 982. [2020-09-21 12:37:45,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 982 states. [2020-09-21 12:37:45,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 982 states to 982 states and 1359 transitions. [2020-09-21 12:37:45,571 INFO L78 Accepts]: Start accepts. Automaton has 982 states and 1359 transitions. Word has length 76 [2020-09-21 12:37:45,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:37:45,572 INFO L479 AbstractCegarLoop]: Abstraction has 982 states and 1359 transitions. [2020-09-21 12:37:45,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 12:37:45,572 INFO L276 IsEmpty]: Start isEmpty. Operand 982 states and 1359 transitions. [2020-09-21 12:37:45,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-21 12:37:45,575 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:37:45,576 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] [2020-09-21 12:37:45,576 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 12:37:45,577 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:37:45,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:37:45,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1170348863, now seen corresponding path program 1 times [2020-09-21 12:37:45,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:37:45,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [579878551] [2020-09-21 12:37:45,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:37:45,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:45,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:45,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:45,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:45,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:45,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:46,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:46,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:46,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-09-21 12:37:46,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-21 12:37:46,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1009 [2020-09-21 12:37:46,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:46,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:37:46,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-21 12:37:46,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:37:46,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:37:46,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:37:46,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:46,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:46,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:46,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:37:46,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:46,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:37:46,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:46,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:37:46,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:37:46,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:37:46,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:37:46,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:37:46,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:46,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:46,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:46,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:37:46,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:46,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:37:46,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:46,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:37:46,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:37:46,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:37:46,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:37:46,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:37:46,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:46,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:46,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:46,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:37:46,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:46,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:37:46,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:46,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:37:46,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:37:46,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:37:46,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:37:46,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-21 12:37:46,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:46,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:46,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:46,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:37:46,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:46,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:37:46,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:46,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:37:46,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:37:46,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:37:46,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:37:46,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-21 12:37:46,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:46,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:46,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:46,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:37:46,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:46,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:37:46,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:46,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:37:46,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:37:46,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:37:46,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:37:46,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-21 12:37:46,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:46,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:46,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:46,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-21 12:37:46,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:46,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-21 12:37:46,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:46,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:37:46,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-21 12:37:46,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:37:46,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:37:46,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:37:46,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:46,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:46,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:46,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 12:37:46,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:46,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 12:37:46,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:46,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:37:46,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:37:46,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:37:46,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:37:46,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 12:37:46,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:46,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:46,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:46,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 12:37:46,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:46,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:37:46,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:46,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:37:46,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-21 12:37:46,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:37:46,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:37:46,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-21 12:37:46,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:46,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:46,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:46,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:37:46,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:46,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:37:46,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:46,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:37:46,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 12:37:46,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:37:46,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:37:46,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-21 12:37:46,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:46,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:46,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:46,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:37:46,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:46,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:37:46,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:46,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:37:46,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 12:37:46,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:37:46,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:37:46,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:37:46,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [579878551] [2020-09-21 12:37:46,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:37:46,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-21 12:37:46,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944554566] [2020-09-21 12:37:46,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-21 12:37:46,968 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:37:46,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-21 12:37:46,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-09-21 12:37:46,969 INFO L87 Difference]: Start difference. First operand 982 states and 1359 transitions. Second operand 10 states. [2020-09-21 12:37:48,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:37:48,351 INFO L93 Difference]: Finished difference Result 1870 states and 2637 transitions. [2020-09-21 12:37:48,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-21 12:37:48,351 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 76 [2020-09-21 12:37:48,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:37:48,360 INFO L225 Difference]: With dead ends: 1870 [2020-09-21 12:37:48,360 INFO L226 Difference]: Without dead ends: 1083 [2020-09-21 12:37:48,365 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2020-09-21 12:37:48,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1083 states. [2020-09-21 12:37:48,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1083 to 954. [2020-09-21 12:37:48,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 954 states. [2020-09-21 12:37:48,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 954 states to 954 states and 1292 transitions. [2020-09-21 12:37:48,449 INFO L78 Accepts]: Start accepts. Automaton has 954 states and 1292 transitions. Word has length 76 [2020-09-21 12:37:48,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:37:48,450 INFO L479 AbstractCegarLoop]: Abstraction has 954 states and 1292 transitions. [2020-09-21 12:37:48,451 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-21 12:37:48,451 INFO L276 IsEmpty]: Start isEmpty. Operand 954 states and 1292 transitions. [2020-09-21 12:37:48,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-21 12:37:48,455 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:37:48,455 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] [2020-09-21 12:37:48,455 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 12:37:48,456 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:37:48,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:37:48,456 INFO L82 PathProgramCache]: Analyzing trace with hash -201458435, now seen corresponding path program 1 times [2020-09-21 12:37:48,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:37:48,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [536928801] [2020-09-21 12:37:48,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:37:48,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:48,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:48,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:48,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:48,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:48,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:49,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:49,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-09-21 12:37:49,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-21 12:37:49,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 999 [2020-09-21 12:37:49,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:49,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:37:49,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:37:49,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-21 12:37:49,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:37:49,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:37:49,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:49,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:49,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:49,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:37:49,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:49,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:37:49,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:49,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:37:49,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:37:49,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:37:49,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:37:49,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:37:49,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:49,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:49,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:49,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:37:49,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:49,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:37:49,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:49,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:37:49,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:37:49,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:37:49,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:37:49,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:37:49,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:49,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:49,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:49,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:37:49,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:49,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:37:49,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:49,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:37:49,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:37:49,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:37:49,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:37:49,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-21 12:37:49,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:49,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:49,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:49,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:37:49,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:49,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:37:49,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:49,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:37:49,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:37:49,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:37:49,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:37:49,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-21 12:37:49,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:49,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:49,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:49,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:37:49,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:49,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 12:37:49,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:49,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:37:49,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:37:49,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:37:49,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:37:49,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-21 12:37:49,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:49,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:49,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:49,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-21 12:37:49,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:49,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-21 12:37:49,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:49,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:37:49,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-21 12:37:49,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-21 12:37:49,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:37:49,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:37:49,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:49,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:49,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:49,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 12:37:49,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:49,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:37:49,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:49,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:37:49,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:37:49,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:37:49,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:37:49,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 12:37:49,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:49,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:49,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:49,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 12:37:49,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:49,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:37:49,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:49,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:37:49,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:37:49,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 12:37:49,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:37:49,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-21 12:37:49,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:49,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:49,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:49,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:37:49,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:49,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:37:49,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:49,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:37:49,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 12:37:49,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:37:49,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:37:49,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-21 12:37:49,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:49,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:49,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:49,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:37:49,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:49,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:37:49,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:49,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:37:49,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 12:37:49,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:37:49,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:37:49,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:37:49,747 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [536928801] [2020-09-21 12:37:49,747 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:37:49,747 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 12:37:49,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13617267] [2020-09-21 12:37:49,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 12:37:49,748 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:37:49,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 12:37:49,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-21 12:37:49,749 INFO L87 Difference]: Start difference. First operand 954 states and 1292 transitions. Second operand 9 states. [2020-09-21 12:37:51,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:37:51,772 INFO L93 Difference]: Finished difference Result 2934 states and 4186 transitions. [2020-09-21 12:37:51,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-21 12:37:51,773 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 76 [2020-09-21 12:37:51,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:37:51,787 INFO L225 Difference]: With dead ends: 2934 [2020-09-21 12:37:51,787 INFO L226 Difference]: Without dead ends: 2009 [2020-09-21 12:37:51,793 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-09-21 12:37:51,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2009 states. [2020-09-21 12:37:51,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2009 to 1851. [2020-09-21 12:37:51,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1851 states. [2020-09-21 12:37:51,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1851 states to 1851 states and 2522 transitions. [2020-09-21 12:37:51,935 INFO L78 Accepts]: Start accepts. Automaton has 1851 states and 2522 transitions. Word has length 76 [2020-09-21 12:37:51,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:37:51,935 INFO L479 AbstractCegarLoop]: Abstraction has 1851 states and 2522 transitions. [2020-09-21 12:37:51,935 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 12:37:51,935 INFO L276 IsEmpty]: Start isEmpty. Operand 1851 states and 2522 transitions. [2020-09-21 12:37:51,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-09-21 12:37:51,938 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:37:51,938 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-21 12:37:51,939 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 12:37:51,939 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:37:51,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:37:51,939 INFO L82 PathProgramCache]: Analyzing trace with hash -665209022, now seen corresponding path program 1 times [2020-09-21 12:37:51,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:37:51,940 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [702274828] [2020-09-21 12:37:51,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:37:51,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:51,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:52,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:52,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:52,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:52,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:52,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-21 12:37:52,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-21 12:37:52,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-21 12:37:52,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:52,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:37:52,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-09-21 12:37:52,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:37:52,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:37:52,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:37:52,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:52,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:52,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:52,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:37:52,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:52,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:37:52,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:52,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:37:52,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:37:52,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:37:52,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:37:53,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:37:53,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:53,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:53,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:53,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:37:53,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:53,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:37:53,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:53,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:37:53,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:37:53,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:37:53,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:37:53,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:37:53,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:53,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:53,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:53,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:37:53,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:53,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:37:53,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:53,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:37:53,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:37:53,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:37:53,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:37:53,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-21 12:37:53,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:53,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:53,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:53,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:37:53,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:53,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:37:53,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:53,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:37:53,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:37:53,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:37:53,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:37:53,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-21 12:37:53,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:53,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:53,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:53,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:37:53,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:53,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:37:53,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:53,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:37:53,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:37:53,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:37:53,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:37:53,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-21 12:37:53,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:53,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:53,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:53,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-21 12:37:53,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:53,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 12:37:53,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:53,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:37:53,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-21 12:37:53,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:37:53,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:37:53,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:37:53,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:53,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:53,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:53,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 12:37:53,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:53,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:37:53,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:53,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:37:53,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:37:53,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:37:53,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:37:53,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 12:37:53,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:53,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:53,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:53,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 12:37:53,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:53,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:37:53,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:53,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:37:53,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:37:53,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:37:53,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:37:53,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-21 12:37:53,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:53,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:53,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:53,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:37:53,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:53,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:37:53,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:53,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:37:53,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 12:37:53,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:37:53,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:37:53,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-21 12:37:53,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:53,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:53,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:53,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:37:53,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:53,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:37:53,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:53,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:37:53,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 12:37:53,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:37:53,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:37:53,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-09-21 12:37:53,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:53,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:53,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:53,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:37:53,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:53,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:37:53,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:53,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:37:53,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 12:37:53,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:37:53,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:37:53,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-09-21 12:37:53,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:53,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:53,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:53,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:37:53,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:53,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:37:53,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:53,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:37:53,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 12:37:53,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:37:53,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:37:53,214 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-21 12:37:53,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [702274828] [2020-09-21 12:37:53,215 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:37:53,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-21 12:37:53,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635292414] [2020-09-21 12:37:53,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-21 12:37:53,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:37:53,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-21 12:37:53,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-21 12:37:53,217 INFO L87 Difference]: Start difference. First operand 1851 states and 2522 transitions. Second operand 11 states. [2020-09-21 12:37:54,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:37:54,791 INFO L93 Difference]: Finished difference Result 3933 states and 5617 transitions. [2020-09-21 12:37:54,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-21 12:37:54,791 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 95 [2020-09-21 12:37:54,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:37:54,810 INFO L225 Difference]: With dead ends: 3933 [2020-09-21 12:37:54,810 INFO L226 Difference]: Without dead ends: 2111 [2020-09-21 12:37:54,821 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=128, Invalid=334, Unknown=0, NotChecked=0, Total=462 [2020-09-21 12:37:54,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2111 states. [2020-09-21 12:37:55,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2111 to 2014. [2020-09-21 12:37:55,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2014 states. [2020-09-21 12:37:55,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2014 states to 2014 states and 2778 transitions. [2020-09-21 12:37:55,039 INFO L78 Accepts]: Start accepts. Automaton has 2014 states and 2778 transitions. Word has length 95 [2020-09-21 12:37:55,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:37:55,040 INFO L479 AbstractCegarLoop]: Abstraction has 2014 states and 2778 transitions. [2020-09-21 12:37:55,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-21 12:37:55,040 INFO L276 IsEmpty]: Start isEmpty. Operand 2014 states and 2778 transitions. [2020-09-21 12:37:55,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-09-21 12:37:55,047 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:37:55,048 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-21 12:37:55,048 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 12:37:55,048 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:37:55,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:37:55,049 INFO L82 PathProgramCache]: Analyzing trace with hash -906049534, now seen corresponding path program 1 times [2020-09-21 12:37:55,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:37:55,049 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [847169248] [2020-09-21 12:37:55,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:37:55,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:55,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:55,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:55,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:55,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:55,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:55,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:56,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:56,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-21 12:37:56,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-21 12:37:56,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-21 12:37:56,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:56,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:37:56,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-21 12:37:56,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-21 12:37:56,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:37:56,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:37:56,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:56,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:56,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:56,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:37:56,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:56,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:37:56,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:56,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:37:56,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:37:56,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:37:56,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:37:56,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:37:56,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:56,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:56,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:56,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:37:56,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:56,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:37:56,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:56,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:37:56,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:37:56,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:37:56,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:37:56,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:37:56,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:56,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:56,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:56,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:37:56,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:56,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:37:56,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:56,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:37:56,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:37:56,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:37:56,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:37:56,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-21 12:37:56,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:56,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:56,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:56,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:37:56,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:56,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:37:56,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:56,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:37:56,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 12:37:56,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:37:56,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:37:56,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-21 12:37:56,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:56,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:56,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:56,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:37:56,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:56,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:37:56,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:56,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:37:56,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 12:37:56,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:37:56,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:37:56,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-21 12:37:56,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:56,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:56,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:56,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-21 12:37:56,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:56,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:37:56,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:56,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:37:56,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-21 12:37:56,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:37:56,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:37:56,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:37:56,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:56,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:56,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:56,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 12:37:56,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:56,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:37:56,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:56,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:37:56,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:37:56,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:37:56,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:37:56,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 12:37:56,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:56,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:56,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:56,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 12:37:56,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:56,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:37:56,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:56,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:37:56,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:37:56,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:37:56,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:37:56,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-21 12:37:56,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:56,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:56,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:56,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:37:56,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:56,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:37:56,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:56,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:37:56,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 12:37:56,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:37:56,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:37:56,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-21 12:37:56,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:56,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:56,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:56,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:37:56,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:56,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:37:56,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:56,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:37:56,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 12:37:56,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:37:56,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:37:56,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-09-21 12:37:56,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:56,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:56,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:56,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:37:56,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:56,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:37:56,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:56,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:37:56,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 12:37:56,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:37:56,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:37:56,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-09-21 12:37:56,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:56,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:56,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:56,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:37:56,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:56,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:37:56,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:56,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:37:56,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 12:37:56,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:37:56,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:37:56,265 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-21 12:37:56,266 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [847169248] [2020-09-21 12:37:56,266 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:37:56,266 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 12:37:56,266 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341670830] [2020-09-21 12:37:56,267 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 12:37:56,267 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:37:56,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 12:37:56,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-21 12:37:56,268 INFO L87 Difference]: Start difference. First operand 2014 states and 2778 transitions. Second operand 9 states. [2020-09-21 12:37:57,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:37:57,586 INFO L93 Difference]: Finished difference Result 3748 states and 5115 transitions. [2020-09-21 12:37:57,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-21 12:37:57,587 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 95 [2020-09-21 12:37:57,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:37:57,599 INFO L225 Difference]: With dead ends: 3748 [2020-09-21 12:37:57,600 INFO L226 Difference]: Without dead ends: 1759 [2020-09-21 12:37:57,608 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-09-21 12:37:57,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1759 states. [2020-09-21 12:37:57,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1759 to 1669. [2020-09-21 12:37:57,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1669 states. [2020-09-21 12:37:57,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1669 states to 1669 states and 2250 transitions. [2020-09-21 12:37:57,728 INFO L78 Accepts]: Start accepts. Automaton has 1669 states and 2250 transitions. Word has length 95 [2020-09-21 12:37:57,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:37:57,729 INFO L479 AbstractCegarLoop]: Abstraction has 1669 states and 2250 transitions. [2020-09-21 12:37:57,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 12:37:57,729 INFO L276 IsEmpty]: Start isEmpty. Operand 1669 states and 2250 transitions. [2020-09-21 12:37:57,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-09-21 12:37:57,731 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:37:57,731 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-21 12:37:57,731 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 12:37:57,731 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:37:57,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:37:57,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1146289280, now seen corresponding path program 1 times [2020-09-21 12:37:57,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:37:57,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [77624929] [2020-09-21 12:37:57,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:37:57,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:57,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:57,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:57,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:58,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:58,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:58,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-21 12:37:58,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-21 12:37:58,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1006 [2020-09-21 12:37:58,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:58,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:37:58,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-09-21 12:37:58,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-21 12:37:58,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:37:58,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:37:58,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:58,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:58,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:58,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:37:58,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:58,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:37:58,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:58,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:37:58,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:37:58,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:37:58,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:37:58,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:37:58,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:58,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:58,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:58,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:37:58,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:58,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:37:58,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:58,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:37:58,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:37:58,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:37:58,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:37:58,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:37:58,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:58,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:58,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:58,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:37:58,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:58,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:37:58,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:58,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:37:58,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:37:58,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:37:58,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:37:58,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-21 12:37:58,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:58,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:58,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:58,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:37:58,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:58,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:37:58,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:58,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:37:58,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:37:58,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:37:58,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:37:58,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-21 12:37:58,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:58,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:58,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:58,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:37:58,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:58,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:37:58,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:58,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:37:58,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:37:58,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:37:58,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:37:58,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-21 12:37:58,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:58,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:58,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:58,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-21 12:37:58,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:58,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:37:58,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:58,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:37:58,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:37:58,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:37:58,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:37:58,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:37:58,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:58,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:58,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:58,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 12:37:58,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:58,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:37:58,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:58,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:37:58,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:37:58,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:37:58,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:37:58,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 12:37:58,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:58,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:58,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:58,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 12:37:58,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:58,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:37:58,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:58,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:37:58,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:37:58,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:37:58,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:37:58,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-21 12:37:58,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:58,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:58,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:58,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:37:58,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:58,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:37:58,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:58,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:37:58,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:37:58,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:37:58,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:37:58,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-21 12:37:58,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:58,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:58,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:58,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:37:58,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:58,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:37:58,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:58,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:37:58,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:37:58,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:37:58,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:37:58,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-09-21 12:37:58,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:58,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:58,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:58,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:37:58,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:58,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:37:58,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:58,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:37:58,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:37:58,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:37:58,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:37:58,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-09-21 12:37:58,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:58,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:58,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:37:58,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:37:58,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:37:58,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:37:58,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:37:58,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:37:58,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:37:58,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:37:58,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:37:58,999 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-21 12:37:58,999 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [77624929] [2020-09-21 12:37:59,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:37:59,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 12:37:59,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603619601] [2020-09-21 12:37:59,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 12:37:59,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:37:59,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 12:37:59,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:37:59,004 INFO L87 Difference]: Start difference. First operand 1669 states and 2250 transitions. Second operand 8 states. [2020-09-21 12:38:00,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:38:00,978 INFO L93 Difference]: Finished difference Result 4944 states and 6888 transitions. [2020-09-21 12:38:00,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-21 12:38:00,979 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 95 [2020-09-21 12:38:00,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:38:00,998 INFO L225 Difference]: With dead ends: 4944 [2020-09-21 12:38:00,998 INFO L226 Difference]: Without dead ends: 2582 [2020-09-21 12:38:01,011 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2020-09-21 12:38:01,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2582 states. [2020-09-21 12:38:01,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2582 to 2462. [2020-09-21 12:38:01,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2462 states. [2020-09-21 12:38:01,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2462 states to 2462 states and 3384 transitions. [2020-09-21 12:38:01,179 INFO L78 Accepts]: Start accepts. Automaton has 2462 states and 3384 transitions. Word has length 95 [2020-09-21 12:38:01,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:38:01,180 INFO L479 AbstractCegarLoop]: Abstraction has 2462 states and 3384 transitions. [2020-09-21 12:38:01,180 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 12:38:01,180 INFO L276 IsEmpty]: Start isEmpty. Operand 2462 states and 3384 transitions. [2020-09-21 12:38:01,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-09-21 12:38:01,183 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:38:01,184 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:38:01,184 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 12:38:01,184 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:38:01,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:38:01,184 INFO L82 PathProgramCache]: Analyzing trace with hash 356794585, now seen corresponding path program 1 times [2020-09-21 12:38:01,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:38:01,185 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2137793271] [2020-09-21 12:38:01,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:38:01,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:01,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:01,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:01,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:02,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:02,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-21 12:38:02,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:38:02,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 999 [2020-09-21 12:38:02,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:02,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 12:38:02,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:38:02,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-21 12:38:02,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:38:02,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:38:02,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:02,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:02,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:02,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:38:02,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:38:02,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:38:02,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:02,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:38:02,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:38:02,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:38:02,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:38:02,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:38:02,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:02,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:02,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:02,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:38:02,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:38:02,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:38:02,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:02,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:38:02,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:38:02,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:38:02,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:38:02,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:38:02,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:02,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:02,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:02,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:38:02,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:38:02,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:38:02,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:02,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:38:02,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:38:02,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:38:02,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:38:02,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-21 12:38:02,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:02,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:02,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:02,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:38:02,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:38:02,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:38:02,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:02,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:38:02,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:38:02,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:38:02,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:38:02,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-21 12:38:02,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:02,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:02,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:02,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:38:02,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:38:02,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-21 12:38:02,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:02,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:38:02,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:38:02,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-21 12:38:02,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:38:02,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-21 12:38:02,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:02,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:02,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:02,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-21 12:38:02,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:38:02,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:38:02,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:02,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:38:02,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-21 12:38:02,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:38:02,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:38:02,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:38:02,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:02,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:02,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:02,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 12:38:02,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:38:02,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:38:02,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:02,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:38:02,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:38:02,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:38:02,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:38:02,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 12:38:02,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:02,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:02,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:02,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 12:38:02,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:38:02,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:38:02,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:02,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:38:02,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:38:02,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:38:02,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:38:02,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-21 12:38:02,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:02,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:02,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:02,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:38:02,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:38:02,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:38:02,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:02,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:38:02,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 12:38:02,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:38:02,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:38:02,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-21 12:38:02,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:02,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:02,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:02,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:38:02,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:38:02,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:38:02,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:02,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:38:02,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 12:38:02,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:38:02,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:38:02,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-09-21 12:38:02,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:02,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:02,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:02,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:38:02,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:38:02,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:38:02,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:02,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:38:02,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 12:38:02,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:38:02,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:38:02,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-09-21 12:38:02,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:02,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:02,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:02,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:38:02,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:38:02,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:38:02,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:02,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:38:02,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 12:38:02,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:38:02,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:38:02,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-21 12:38:02,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:02,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:02,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:02,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-21 12:38:02,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:38:02,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-21 12:38:02,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:02,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:38:02,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-21 12:38:02,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:38:02,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:38:02,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:38:02,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:02,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:02,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:02,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-21 12:38:02,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:38:02,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 12:38:02,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:02,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:38:02,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:38:02,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:38:02,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:38:02,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:38:02,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:02,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:02,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:02,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-21 12:38:02,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:38:02,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:38:02,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:02,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:38:02,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:38:02,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:38:02,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:38:02,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:38:02,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:02,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:02,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:02,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 12:38:02,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:38:02,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:38:02,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:02,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:38:02,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:38:02,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:38:02,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:38:02,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 12:38:02,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:02,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:02,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:02,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 12:38:02,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:38:02,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:38:02,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:02,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:38:02,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:38:02,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:38:02,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:38:02,586 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-09-21 12:38:02,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2137793271] [2020-09-21 12:38:02,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:38:02,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-21 12:38:02,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206072102] [2020-09-21 12:38:02,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-21 12:38:02,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:38:02,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-21 12:38:02,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-09-21 12:38:02,588 INFO L87 Difference]: Start difference. First operand 2462 states and 3384 transitions. Second operand 11 states. [2020-09-21 12:38:03,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:38:03,998 INFO L93 Difference]: Finished difference Result 4714 states and 6575 transitions. [2020-09-21 12:38:03,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-21 12:38:03,998 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 129 [2020-09-21 12:38:03,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:38:04,016 INFO L225 Difference]: With dead ends: 4714 [2020-09-21 12:38:04,017 INFO L226 Difference]: Without dead ends: 2609 [2020-09-21 12:38:04,027 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2020-09-21 12:38:04,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2609 states. [2020-09-21 12:38:04,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2609 to 2455. [2020-09-21 12:38:04,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2455 states. [2020-09-21 12:38:04,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2455 states to 2455 states and 3316 transitions. [2020-09-21 12:38:04,250 INFO L78 Accepts]: Start accepts. Automaton has 2455 states and 3316 transitions. Word has length 129 [2020-09-21 12:38:04,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:38:04,251 INFO L479 AbstractCegarLoop]: Abstraction has 2455 states and 3316 transitions. [2020-09-21 12:38:04,251 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-21 12:38:04,251 INFO L276 IsEmpty]: Start isEmpty. Operand 2455 states and 3316 transitions. [2020-09-21 12:38:04,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-09-21 12:38:04,256 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:38:04,257 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:38:04,257 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 12:38:04,257 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:38:04,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:38:04,258 INFO L82 PathProgramCache]: Analyzing trace with hash -1544826147, now seen corresponding path program 1 times [2020-09-21 12:38:04,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:38:04,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [623000896] [2020-09-21 12:38:04,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:38:04,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:04,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:04,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:05,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:05,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-21 12:38:05,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:38:05,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1008 [2020-09-21 12:38:05,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:05,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 12:38:05,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:38:05,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-21 12:38:05,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:38:05,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:38:05,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:05,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:05,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:05,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:38:05,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:38:05,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:38:05,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:05,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:38:05,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:38:05,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:38:05,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:38:05,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:38:05,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:05,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:05,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:05,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:38:05,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:38:05,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:38:05,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:05,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:38:05,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:38:05,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:38:05,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:38:05,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:38:05,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:05,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:05,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:05,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:38:05,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:38:05,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:38:05,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:05,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:38:05,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:38:05,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:38:05,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:38:05,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-21 12:38:05,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:05,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:05,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:05,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:38:05,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:38:05,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:38:05,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:05,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:38:05,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:38:05,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:38:05,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:38:05,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-21 12:38:05,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:05,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:05,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:05,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:38:05,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:38:05,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:38:05,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:05,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:38:05,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:38:05,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-21 12:38:05,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:38:05,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-21 12:38:05,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:05,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:05,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:05,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-21 12:38:05,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:38:05,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:38:05,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:05,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:38:05,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-21 12:38:05,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:38:05,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:38:05,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:38:05,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:05,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:05,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:05,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 12:38:05,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:38:05,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:38:05,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:05,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:38:05,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:38:05,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:38:05,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:38:05,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 12:38:05,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:05,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:05,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:05,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 12:38:05,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:38:05,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:38:05,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:05,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:38:05,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:38:05,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:38:05,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:38:05,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-21 12:38:05,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:05,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:05,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:05,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:38:05,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:38:05,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:38:05,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:05,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:38:05,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 12:38:05,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:38:05,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:38:05,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-21 12:38:05,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:05,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:05,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:05,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:38:05,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:38:05,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:38:05,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:05,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:38:05,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 12:38:05,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:38:05,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:38:05,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-09-21 12:38:05,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:05,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:05,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:05,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:38:05,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:38:05,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:38:05,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:05,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:38:05,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 12:38:05,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:38:05,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:38:05,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-09-21 12:38:05,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:05,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:05,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:05,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:38:05,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:38:05,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:38:05,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:05,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:38:05,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 12:38:05,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:38:05,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:38:05,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-21 12:38:05,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:05,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:05,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:05,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-21 12:38:05,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:38:05,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-21 12:38:05,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:05,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:38:05,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-21 12:38:05,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:38:05,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:38:05,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:38:05,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:05,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:05,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:05,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-21 12:38:05,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:38:05,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 12:38:05,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:05,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:38:05,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:38:05,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:38:05,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:38:05,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:38:05,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:05,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:05,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:05,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-21 12:38:05,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:38:05,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:38:05,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:05,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:38:05,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:38:05,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:38:05,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:38:05,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:38:05,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:05,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:05,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:05,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 12:38:05,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:38:05,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:38:05,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:05,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:38:05,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:38:05,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:38:05,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:38:05,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 12:38:05,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:05,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:05,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:05,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 12:38:05,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:38:05,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:38:05,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:05,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:38:05,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:38:05,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:38:05,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:38:05,618 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-09-21 12:38:05,618 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [623000896] [2020-09-21 12:38:05,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:38:05,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-21 12:38:05,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126468502] [2020-09-21 12:38:05,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-21 12:38:05,619 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:38:05,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-21 12:38:05,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-09-21 12:38:05,620 INFO L87 Difference]: Start difference. First operand 2455 states and 3316 transitions. Second operand 10 states. [2020-09-21 12:38:07,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:38:07,240 INFO L93 Difference]: Finished difference Result 4358 states and 5919 transitions. [2020-09-21 12:38:07,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-21 12:38:07,240 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 129 [2020-09-21 12:38:07,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:38:07,253 INFO L225 Difference]: With dead ends: 4358 [2020-09-21 12:38:07,253 INFO L226 Difference]: Without dead ends: 2268 [2020-09-21 12:38:07,263 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=144, Invalid=408, Unknown=0, NotChecked=0, Total=552 [2020-09-21 12:38:07,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2268 states. [2020-09-21 12:38:07,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2268 to 2106. [2020-09-21 12:38:07,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2106 states. [2020-09-21 12:38:07,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2106 states to 2106 states and 2712 transitions. [2020-09-21 12:38:07,402 INFO L78 Accepts]: Start accepts. Automaton has 2106 states and 2712 transitions. Word has length 129 [2020-09-21 12:38:07,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:38:07,403 INFO L479 AbstractCegarLoop]: Abstraction has 2106 states and 2712 transitions. [2020-09-21 12:38:07,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-21 12:38:07,404 INFO L276 IsEmpty]: Start isEmpty. Operand 2106 states and 2712 transitions. [2020-09-21 12:38:07,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-09-21 12:38:07,407 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:38:07,407 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:38:07,407 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-21 12:38:07,408 INFO L427 AbstractCegarLoop]: === Iteration 11 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:38:07,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:38:07,408 INFO L82 PathProgramCache]: Analyzing trace with hash 257754907, now seen corresponding path program 1 times [2020-09-21 12:38:07,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:38:07,408 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [906526534] [2020-09-21 12:38:07,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:38:07,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:07,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:07,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:07,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-21 12:38:07,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:38:07,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 381 [2020-09-21 12:38:07,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:07,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 12:38:07,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:38:07,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-21 12:38:07,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:38:07,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:38:07,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:07,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:07,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:07,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:38:07,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:38:07,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:38:07,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:07,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:38:07,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:38:07,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:38:07,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:38:07,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:38:07,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:07,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:07,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:07,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:38:07,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:38:07,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:38:07,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:07,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:38:07,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:38:07,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:38:07,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:38:07,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:38:07,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:07,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:07,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:07,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:38:07,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:38:07,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:38:07,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:07,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:38:07,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:38:07,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:38:07,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:38:07,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-21 12:38:07,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:07,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:07,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:07,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:38:07,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:38:07,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:38:07,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:07,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:38:07,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:38:07,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:38:07,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:38:07,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-21 12:38:07,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:07,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:07,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:07,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:38:07,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:38:07,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:38:07,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:07,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:38:07,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:38:07,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-21 12:38:07,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:38:07,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-21 12:38:07,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:07,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:07,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:07,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-21 12:38:07,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:38:07,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:38:07,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:07,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:38:07,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-21 12:38:07,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:38:07,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:38:07,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:38:07,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:07,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:07,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:07,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 12:38:07,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:38:07,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:38:07,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:07,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:38:07,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:38:07,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:38:07,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:38:07,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 12:38:07,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:07,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:07,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:07,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 12:38:07,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:38:07,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:38:07,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:07,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:38:07,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:38:07,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:38:07,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:38:07,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-21 12:38:07,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:07,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:07,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:07,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:38:07,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:38:07,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:38:07,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:07,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:38:07,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 12:38:07,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:38:07,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:38:07,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-21 12:38:07,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:07,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:07,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:07,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:38:07,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:38:07,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:38:07,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:07,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:38:07,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 12:38:07,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:38:07,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:38:08,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-09-21 12:38:08,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:08,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:08,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:08,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:38:08,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:38:08,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:38:08,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:08,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:38:08,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 12:38:08,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:38:08,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:38:08,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-09-21 12:38:08,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:08,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:08,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:08,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:38:08,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:38:08,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:38:08,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:08,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:38:08,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 12:38:08,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:38:08,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:38:08,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-21 12:38:08,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:08,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:08,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:08,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-21 12:38:08,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:38:08,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-21 12:38:08,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:08,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:38:08,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-21 12:38:08,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:38:08,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:38:08,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:38:08,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:08,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:08,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:08,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-21 12:38:08,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:38:08,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 12:38:08,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:08,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:38:08,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:38:08,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:38:08,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:38:08,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:38:08,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:08,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:08,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:08,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-21 12:38:08,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:38:08,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 12:38:08,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:08,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:38:08,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:38:08,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:38:08,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:38:08,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:38:08,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:08,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:08,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:08,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 12:38:08,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:38:08,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:38:08,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:08,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:38:08,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:38:08,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:38:08,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:38:08,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 12:38:08,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:08,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:08,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:08,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 12:38:08,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:38:08,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:38:08,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:08,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:38:08,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:38:08,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:38:08,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:38:08,174 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-09-21 12:38:08,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [906526534] [2020-09-21 12:38:08,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:38:08,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-21 12:38:08,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19450434] [2020-09-21 12:38:08,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-21 12:38:08,176 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:38:08,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-21 12:38:08,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-21 12:38:08,177 INFO L87 Difference]: Start difference. First operand 2106 states and 2712 transitions. Second operand 11 states. [2020-09-21 12:38:09,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:38:09,493 INFO L93 Difference]: Finished difference Result 4003 states and 5369 transitions. [2020-09-21 12:38:09,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-21 12:38:09,494 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 129 [2020-09-21 12:38:09,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:38:09,506 INFO L225 Difference]: With dead ends: 4003 [2020-09-21 12:38:09,506 INFO L226 Difference]: Without dead ends: 2015 [2020-09-21 12:38:09,514 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=127, Invalid=335, Unknown=0, NotChecked=0, Total=462 [2020-09-21 12:38:09,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2015 states. [2020-09-21 12:38:09,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2015 to 1812. [2020-09-21 12:38:09,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1812 states. [2020-09-21 12:38:09,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1812 states to 1812 states and 2268 transitions. [2020-09-21 12:38:09,643 INFO L78 Accepts]: Start accepts. Automaton has 1812 states and 2268 transitions. Word has length 129 [2020-09-21 12:38:09,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:38:09,643 INFO L479 AbstractCegarLoop]: Abstraction has 1812 states and 2268 transitions. [2020-09-21 12:38:09,643 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-21 12:38:09,643 INFO L276 IsEmpty]: Start isEmpty. Operand 1812 states and 2268 transitions. [2020-09-21 12:38:09,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-09-21 12:38:09,646 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:38:09,646 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:38:09,646 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-21 12:38:09,646 INFO L427 AbstractCegarLoop]: === Iteration 12 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:38:09,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:38:09,647 INFO L82 PathProgramCache]: Analyzing trace with hash 473506967, now seen corresponding path program 1 times [2020-09-21 12:38:09,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:38:09,647 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [352858052] [2020-09-21 12:38:09,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:38:09,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 12:38:09,674 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 12:38:09,674 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 12:38:09,680 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-21 12:38:09,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 12:38:09 BoogieIcfgContainer [2020-09-21 12:38:09,732 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 12:38:09,736 INFO L168 Benchmark]: Toolchain (without parser) took 35893.82 ms. Allocated memory was 140.5 MB in the beginning and 651.7 MB in the end (delta: 511.2 MB). Free memory was 102.5 MB in the beginning and 458.1 MB in the end (delta: -355.6 MB). Peak memory consumption was 155.6 MB. Max. memory is 7.1 GB. [2020-09-21 12:38:09,737 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.4 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-09-21 12:38:09,738 INFO L168 Benchmark]: CACSL2BoogieTranslator took 391.62 ms. Allocated memory is still 140.5 MB. Free memory was 102.1 MB in the beginning and 88.7 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. [2020-09-21 12:38:09,738 INFO L168 Benchmark]: Boogie Preprocessor took 127.08 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 88.7 MB in the beginning and 180.3 MB in the end (delta: -91.6 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2020-09-21 12:38:09,739 INFO L168 Benchmark]: RCFGBuilder took 627.85 ms. Allocated memory is still 202.9 MB. Free memory was 179.4 MB in the beginning and 150.3 MB in the end (delta: 29.1 MB). Peak memory consumption was 29.1 MB. Max. memory is 7.1 GB. [2020-09-21 12:38:09,740 INFO L168 Benchmark]: TraceAbstraction took 34732.11 ms. Allocated memory was 202.9 MB in the beginning and 651.7 MB in the end (delta: 448.8 MB). Free memory was 149.4 MB in the beginning and 458.1 MB in the end (delta: -308.8 MB). Peak memory consumption was 140.0 MB. Max. memory is 7.1 GB. [2020-09-21 12:38:09,744 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.4 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 391.62 ms. Allocated memory is still 140.5 MB. Free memory was 102.1 MB in the beginning and 88.7 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 127.08 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 88.7 MB in the beginning and 180.3 MB in the end (delta: -91.6 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 627.85 ms. Allocated memory is still 202.9 MB. Free memory was 179.4 MB in the beginning and 150.3 MB in the end (delta: 29.1 MB). Peak memory consumption was 29.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 34732.11 ms. Allocated memory was 202.9 MB in the beginning and 651.7 MB in the end (delta: 448.8 MB). Free memory was 149.4 MB in the beginning and 458.1 MB in the end (delta: -308.8 MB). Peak memory consumption was 140.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 11]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L15] int m_pc = 0; [L16] int t1_pc = 0; [L17] int m_st ; [L18] int t1_st ; [L19] int m_i ; [L20] int t1_i ; [L21] int M_E = 2; [L22] int T1_E = 2; [L23] int E_1 = 2; [L439] int __retres1 ; [L443] CALL init_model() [L354] m_i = 1 [L355] t1_i = 1 [L443] RET init_model() [L444] CALL start_simulation() [L380] int kernel_st ; [L381] int tmp ; [L382] int tmp___0 ; [L386] kernel_st = 0 [L387] FCALL update_channels() [L388] CALL init_threads() [L151] COND TRUE m_i == 1 [L152] m_st = 0 [L156] COND TRUE t1_i == 1 [L157] t1_st = 0 [L388] RET init_threads() [L389] CALL fire_delta_events() [L240] COND FALSE !(M_E == 0) [L245] COND FALSE !(T1_E == 0) [L250] COND FALSE !(E_1 == 0) [L389] RET fire_delta_events() [L390] CALL activate_threads() [L283] int tmp ; [L284] int tmp___0 ; [L288] CALL, EXPR is_master_triggered() [L102] int __retres1 ; [L105] COND FALSE !(m_pc == 1) [L115] __retres1 = 0 [L117] return (__retres1); [L288] RET, EXPR is_master_triggered() [L288] tmp = is_master_triggered() [L290] COND FALSE !(\read(tmp)) [L296] CALL, EXPR is_transmit1_triggered() [L121] int __retres1 ; [L124] COND FALSE !(t1_pc == 1) [L134] __retres1 = 0 [L136] return (__retres1); [L296] RET, EXPR is_transmit1_triggered() [L296] tmp___0 = is_transmit1_triggered() [L298] COND FALSE !(\read(tmp___0)) [L390] RET activate_threads() [L391] CALL reset_delta_events() [L263] COND FALSE !(M_E == 1) [L268] COND FALSE !(T1_E == 1) [L273] COND FALSE !(E_1 == 1) [L391] RET reset_delta_events() [L394] COND TRUE 1 [L397] kernel_st = 1 [L398] CALL eval() [L187] int tmp ; [L191] COND TRUE 1 [L194] CALL, EXPR exists_runnable_thread() [L166] int __retres1 ; [L169] COND TRUE m_st == 0 [L170] __retres1 = 1 [L182] return (__retres1); [L194] RET, EXPR exists_runnable_thread() [L194] tmp = exists_runnable_thread() [L196] COND TRUE \read(tmp) [L201] COND TRUE m_st == 0 [L202] int tmp_ndt_1; [L203] tmp_ndt_1 = __VERIFIER_nondet_int() [L204] COND FALSE !(\read(tmp_ndt_1)) [L215] COND TRUE t1_st == 0 [L216] int tmp_ndt_2; [L217] tmp_ndt_2 = __VERIFIER_nondet_int() [L218] COND TRUE \read(tmp_ndt_2) [L220] t1_st = 1 [L221] CALL transmit1() [L72] COND TRUE t1_pc == 0 [L83] COND TRUE 1 [L85] t1_pc = 1 [L86] t1_st = 2 [L221] RET transmit1() [L191] COND TRUE 1 [L194] CALL, EXPR exists_runnable_thread() [L166] int __retres1 ; [L169] COND TRUE m_st == 0 [L170] __retres1 = 1 [L182] return (__retres1); [L194] RET, EXPR exists_runnable_thread() [L194] tmp = exists_runnable_thread() [L196] COND TRUE \read(tmp) [L201] COND TRUE m_st == 0 [L202] int tmp_ndt_1; [L203] tmp_ndt_1 = __VERIFIER_nondet_int() [L204] COND TRUE \read(tmp_ndt_1) [L206] m_st = 1 [L207] CALL master() [L31] COND TRUE m_pc == 0 [L42] COND TRUE 1 [L45] E_1 = 1 [L46] CALL immediate_notify() [L312] CALL activate_threads() [L283] int tmp ; [L284] int tmp___0 ; [L288] CALL, EXPR is_master_triggered() [L102] int __retres1 ; [L105] COND FALSE !(m_pc == 1) [L115] __retres1 = 0 [L117] return (__retres1); [L288] RET, EXPR is_master_triggered() [L288] tmp = is_master_triggered() [L290] COND FALSE !(\read(tmp)) [L296] CALL, EXPR is_transmit1_triggered() [L121] int __retres1 ; [L124] COND TRUE t1_pc == 1 [L125] COND TRUE E_1 == 1 [L126] __retres1 = 1 [L136] return (__retres1); [L296] RET, EXPR is_transmit1_triggered() [L296] tmp___0 = is_transmit1_triggered() [L298] COND TRUE \read(tmp___0) [L299] t1_st = 0 [L312] RET activate_threads() [L46] RET immediate_notify() [L47] E_1 = 2 [L50] COND TRUE 1 [L52] m_pc = 1 [L53] m_st = 2 [L207] RET master() [L215] COND TRUE t1_st == 0 [L216] int tmp_ndt_2; [L217] tmp_ndt_2 = __VERIFIER_nondet_int() [L218] COND TRUE \read(tmp_ndt_2) [L220] t1_st = 1 [L221] CALL transmit1() [L72] COND FALSE !(t1_pc == 0) [L75] COND TRUE t1_pc == 1 [L91] CALL error() [L11] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 21 procedures, 139 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 34.5s, OverallIterations: 12, TraceHistogramMax: 2, AutomataDifference: 18.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1898 SDtfs, 5363 SDslu, 541 SDs, 0 SdLazy, 10981 SolverSat, 3210 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 502 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 539 ImplicationChecksByTransitivity, 2.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2462occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.5s AutomataMinimizationTime, 11 MinimizatonAttempts, 1459 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 13.5s InterpolantComputationTime, 1179 NumberOfCodeBlocks, 1179 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1039 ConstructedInterpolants, 0 QuantifiedInterpolants, 209168 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 150/150 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...