/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label34.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:34:44,393 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:34:44,397 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:34:44,449 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:34:44,450 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:34:44,458 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:34:44,461 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:34:44,465 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:34:44,468 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:34:44,472 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:34:44,473 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:34:44,474 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:34:44,474 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:34:44,478 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:34:44,481 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:34:44,483 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:34:44,485 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:34:44,486 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:34:44,488 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:34:44,497 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:34:44,501 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:34:44,502 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:34:44,504 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:34:44,505 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:34:44,520 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:34:44,520 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:34:44,520 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:34:44,527 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:34:44,527 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:34:44,528 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:34:44,528 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:34:44,531 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:34:44,532 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:34:44,536 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:34:44,538 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:34:44,538 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:34:44,539 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:34:44,539 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:34:44,542 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:34:44,544 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:34:44,544 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:34:44,546 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 04:34:44,594 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:34:44,595 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:34:44,598 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:34:44,599 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:34:44,599 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:34:44,599 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:34:44,599 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:34:44,599 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:34:44,600 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:34:44,600 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:34:44,601 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:34:44,602 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:34:44,602 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:34:44,603 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:34:44,603 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:34:44,603 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:34:44,603 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:34:44,603 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:34:44,603 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:34:44,604 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:34:44,604 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:34:44,605 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:34:44,605 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:34:44,605 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:34:44,605 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:34:44,605 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:34:44,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:34:44,606 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:34:44,606 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:34:44,606 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 04:34:44,972 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:34:44,984 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:34:44,988 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:34:44,994 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:34:44,994 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:34:44,995 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label34.c [2020-10-14 04:34:45,084 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fd195eaa7/b9f6ac51ad2542a1a58f1ed010a1320d/FLAG251d28e77 [2020-10-14 04:34:46,206 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:34:46,207 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem19_label34.c [2020-10-14 04:34:46,265 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fd195eaa7/b9f6ac51ad2542a1a58f1ed010a1320d/FLAG251d28e77 [2020-10-14 04:34:46,487 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fd195eaa7/b9f6ac51ad2542a1a58f1ed010a1320d [2020-10-14 04:34:46,496 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:34:46,498 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:34:46,500 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:34:46,500 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:34:46,505 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:34:46,506 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:34:46" (1/1) ... [2020-10-14 04:34:46,510 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43ba14b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:34:46, skipping insertion in model container [2020-10-14 04:34:46,510 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:34:46" (1/1) ... [2020-10-14 04:34:46,521 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:34:46,765 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:34:49,349 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:34:49,361 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:34:50,616 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:34:50,678 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:34:50,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:34:50 WrapperNode [2020-10-14 04:34:50,679 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:34:50,680 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:34:50,681 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:34:50,681 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:34:50,697 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:34:50" (1/1) ... [2020-10-14 04:34:50,697 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:34:50" (1/1) ... [2020-10-14 04:34:50,801 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:34:50" (1/1) ... [2020-10-14 04:34:50,802 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:34:50" (1/1) ... [2020-10-14 04:34:50,980 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:34:50" (1/1) ... [2020-10-14 04:34:51,028 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:34:50" (1/1) ... [2020-10-14 04:34:51,088 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:34:50" (1/1) ... [2020-10-14 04:34:51,164 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:34:51,165 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:34:51,165 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:34:51,165 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:34:51,167 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:34:50" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:34:51,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:34:51,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:34:51,365 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 04:34:51,365 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 04:34:51,365 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 04:34:51,365 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 04:34:51,366 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-14 04:34:51,367 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-14 04:34:51,367 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:34:51,367 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 04:34:51,367 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 04:34:51,367 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 04:34:51,368 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 04:34:51,368 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-14 04:34:51,368 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-14 04:34:51,369 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:34:51,370 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 04:34:51,370 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 04:34:51,370 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:34:51,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:34:51,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:35:06,272 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:35:06,272 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 04:35:06,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:35:06 BoogieIcfgContainer [2020-10-14 04:35:06,287 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:35:06,289 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:35:06,290 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:35:06,294 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:35:06,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:34:46" (1/3) ... [2020-10-14 04:35:06,296 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e21d492 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:35:06, skipping insertion in model container [2020-10-14 04:35:06,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:34:50" (2/3) ... [2020-10-14 04:35:06,297 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e21d492 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:35:06, skipping insertion in model container [2020-10-14 04:35:06,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:35:06" (3/3) ... [2020-10-14 04:35:06,300 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem19_label34.c [2020-10-14 04:35:06,313 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:35:06,329 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:35:06,346 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:35:06,387 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:35:06,387 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:35:06,388 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:35:06,388 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:35:06,388 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:35:06,388 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:35:06,388 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:35:06,388 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:35:06,446 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states. [2020-10-14 04:35:06,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 04:35:06,458 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:35:06,460 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] [2020-10-14 04:35:06,461 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:35:06,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:35:06,470 INFO L82 PathProgramCache]: Analyzing trace with hash -1717297526, now seen corresponding path program 1 times [2020-10-14 04:35:06,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:35:06,482 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1458338519] [2020-10-14 04:35:06,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:35:06,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:35:06,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:35:07,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:35:07,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 04:35:07,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:35:07,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 600 [2020-10-14 04:35:07,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:35:07,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:35:07,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:35:07,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:35:07,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 04:35:07,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 04:35:07,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:35:07,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:35:07,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:35:07,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:35:07,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:35:07,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:35:07,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 04:35:07,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:35:07,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:35:07,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:35:07,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:35:07,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:35:07,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:35:07,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:35:07,505 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1458338519] [2020-10-14 04:35:07,508 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:35:07,509 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 04:35:07,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252113836] [2020-10-14 04:35:07,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:35:07,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:35:07,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:35:07,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:35:07,543 INFO L87 Difference]: Start difference. First operand 1777 states. Second operand 4 states. [2020-10-14 04:35:34,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:35:34,524 INFO L93 Difference]: Finished difference Result 5087 states and 9562 transitions. [2020-10-14 04:35:34,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:35:34,527 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2020-10-14 04:35:34,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:35:34,582 INFO L225 Difference]: With dead ends: 5087 [2020-10-14 04:35:34,583 INFO L226 Difference]: Without dead ends: 3246 [2020-10-14 04:35:34,601 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:35:34,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3246 states. [2020-10-14 04:35:34,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3246 to 3179. [2020-10-14 04:35:34,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3179 states. [2020-10-14 04:35:34,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3179 states to 3179 states and 5850 transitions. [2020-10-14 04:35:34,875 INFO L78 Accepts]: Start accepts. Automaton has 3179 states and 5850 transitions. Word has length 56 [2020-10-14 04:35:34,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:35:34,877 INFO L479 AbstractCegarLoop]: Abstraction has 3179 states and 5850 transitions. [2020-10-14 04:35:34,878 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:35:34,879 INFO L276 IsEmpty]: Start isEmpty. Operand 3179 states and 5850 transitions. [2020-10-14 04:35:34,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-14 04:35:34,894 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:35:34,895 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:35:34,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:35:34,896 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:35:34,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:35:34,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1893081033, now seen corresponding path program 1 times [2020-10-14 04:35:34,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:35:34,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [737199095] [2020-10-14 04:35:34,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:35:34,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:35:35,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:35:35,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:35:35,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:35:36,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:35:36,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:35:36,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-14 04:35:36,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:35:36,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1577 [2020-10-14 04:35:36,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:35:36,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:35:36,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:35:36,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-14 04:35:36,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:35:36,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 04:35:36,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:35:36,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:35:36,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:35:36,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:35:36,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:35:36,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:35:36,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:35:36,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:35:36,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:35:36,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:35:36,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:35:36,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:35:36,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:35:36,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:35:36,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:35:36,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:35:36,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:35:36,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 04:35:36,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:35:36,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-14 04:35:36,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:35:36,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:35:36,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:35:36,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-14 04:35:36,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:35:36,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:35:36,811 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:35:36,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [737199095] [2020-10-14 04:35:36,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:35:36,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 04:35:36,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431003549] [2020-10-14 04:35:36,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:35:36,816 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:35:36,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:35:36,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:35:36,817 INFO L87 Difference]: Start difference. First operand 3179 states and 5850 transitions. Second operand 5 states. [2020-10-14 04:36:09,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:36:09,434 INFO L93 Difference]: Finished difference Result 9273 states and 17286 transitions. [2020-10-14 04:36:09,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:36:09,436 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-10-14 04:36:09,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:36:09,476 INFO L225 Difference]: With dead ends: 9273 [2020-10-14 04:36:09,476 INFO L226 Difference]: Without dead ends: 6100 [2020-10-14 04:36:09,561 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:36:09,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6100 states. [2020-10-14 04:36:09,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6100 to 6034. [2020-10-14 04:36:09,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6034 states. [2020-10-14 04:36:09,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6034 states to 6034 states and 10314 transitions. [2020-10-14 04:36:09,784 INFO L78 Accepts]: Start accepts. Automaton has 6034 states and 10314 transitions. Word has length 127 [2020-10-14 04:36:09,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:36:09,788 INFO L479 AbstractCegarLoop]: Abstraction has 6034 states and 10314 transitions. [2020-10-14 04:36:09,788 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:36:09,788 INFO L276 IsEmpty]: Start isEmpty. Operand 6034 states and 10314 transitions. [2020-10-14 04:36:09,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-14 04:36:09,801 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:36:09,802 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:36:09,802 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:36:09,803 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:36:09,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:36:09,804 INFO L82 PathProgramCache]: Analyzing trace with hash 1860989101, now seen corresponding path program 1 times [2020-10-14 04:36:09,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:36:09,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [880712556] [2020-10-14 04:36:09,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:36:09,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:36:09,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:36:10,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:36:11,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:36:11,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-14 04:36:11,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:36:11,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1190 [2020-10-14 04:36:11,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:36:11,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:36:11,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:36:11,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-14 04:36:11,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-14 04:36:11,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:36:11,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:36:11,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:36:11,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:36:11,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:36:11,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:36:11,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:36:11,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:36:11,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:36:11,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:36:11,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:36:11,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:36:11,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:36:11,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:36:11,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:36:11,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:36:11,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:36:11,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:36:11,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 04:36:11,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:36:11,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-14 04:36:11,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:36:11,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:36:11,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:36:11,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:36:11,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 04:36:11,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:36:11,422 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:36:11,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [880712556] [2020-10-14 04:36:11,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:36:11,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:36:11,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627062993] [2020-10-14 04:36:11,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:36:11,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:36:11,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:36:11,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:36:11,429 INFO L87 Difference]: Start difference. First operand 6034 states and 10314 transitions. Second operand 5 states. [2020-10-14 04:36:48,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:36:48,981 INFO L93 Difference]: Finished difference Result 16312 states and 27879 transitions. [2020-10-14 04:36:48,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:36:48,989 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2020-10-14 04:36:48,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:36:49,061 INFO L225 Difference]: With dead ends: 16312 [2020-10-14 04:36:49,062 INFO L226 Difference]: Without dead ends: 10284 [2020-10-14 04:36:49,086 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:36:49,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10284 states. [2020-10-14 04:36:49,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10284 to 10278. [2020-10-14 04:36:49,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10278 states. [2020-10-14 04:36:49,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10278 states to 10278 states and 15361 transitions. [2020-10-14 04:36:49,424 INFO L78 Accepts]: Start accepts. Automaton has 10278 states and 15361 transitions. Word has length 132 [2020-10-14 04:36:49,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:36:49,427 INFO L479 AbstractCegarLoop]: Abstraction has 10278 states and 15361 transitions. [2020-10-14 04:36:49,428 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:36:49,428 INFO L276 IsEmpty]: Start isEmpty. Operand 10278 states and 15361 transitions. [2020-10-14 04:36:49,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-14 04:36:49,432 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:36:49,432 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:36:49,433 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 04:36:49,433 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:36:49,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:36:49,433 INFO L82 PathProgramCache]: Analyzing trace with hash -1258893045, now seen corresponding path program 1 times [2020-10-14 04:36:49,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:36:49,435 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1238390886] [2020-10-14 04:36:49,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:36:49,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:36:49,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:36:49,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:36:50,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:36:51,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:36:51,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-14 04:36:51,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:36:51,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2418 [2020-10-14 04:36:51,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:36:51,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:36:51,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:36:51,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-14 04:36:51,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-14 04:36:51,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:36:52,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:36:52,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:36:52,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:36:52,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:36:52,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:36:52,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:36:52,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:36:52,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:36:52,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:36:52,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:36:52,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:36:52,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:36:52,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:36:52,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:36:52,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:36:52,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:36:52,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:36:52,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 04:36:52,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:36:52,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-14 04:36:52,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:36:52,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:36:52,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:36:52,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:36:52,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 04:36:52,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:36:52,399 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:36:52,401 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1238390886] [2020-10-14 04:36:52,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:36:52,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:36:52,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374015426] [2020-10-14 04:36:52,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:36:52,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:36:52,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:36:52,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:36:52,408 INFO L87 Difference]: Start difference. First operand 10278 states and 15361 transitions. Second operand 5 states. [2020-10-14 04:37:46,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:37:46,809 INFO L93 Difference]: Finished difference Result 24789 states and 38137 transitions. [2020-10-14 04:37:46,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:37:46,814 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 158 [2020-10-14 04:37:46,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:37:46,885 INFO L225 Difference]: With dead ends: 24789 [2020-10-14 04:37:46,885 INFO L226 Difference]: Without dead ends: 14517 [2020-10-14 04:37:46,914 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:37:46,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14517 states. [2020-10-14 04:37:47,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14517 to 14511. [2020-10-14 04:37:47,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14511 states. [2020-10-14 04:37:47,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14511 states to 14511 states and 20408 transitions. [2020-10-14 04:37:47,313 INFO L78 Accepts]: Start accepts. Automaton has 14511 states and 20408 transitions. Word has length 158 [2020-10-14 04:37:47,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:37:47,317 INFO L479 AbstractCegarLoop]: Abstraction has 14511 states and 20408 transitions. [2020-10-14 04:37:47,317 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:37:47,317 INFO L276 IsEmpty]: Start isEmpty. Operand 14511 states and 20408 transitions. [2020-10-14 04:37:47,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-10-14 04:37:47,324 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:37:47,325 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:37:47,325 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 04:37:47,325 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:37:47,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:37:47,326 INFO L82 PathProgramCache]: Analyzing trace with hash 682251106, now seen corresponding path program 1 times [2020-10-14 04:37:47,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:37:47,327 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1437864060] [2020-10-14 04:37:47,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:37:47,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:37:47,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:37:47,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:37:47,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:37:47,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:37:48,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:37:49,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:37:52,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:37:52,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:37:52,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 234 [2020-10-14 04:37:52,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 04:37:52,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-14 04:37:52,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:37:52,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:37:52,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:37:52,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 176 [2020-10-14 04:37:52,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:37:52,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:37:52,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:37:52,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:37:52,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:37:52,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:37:52,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:37:52,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:37:52,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:37:52,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:37:52,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:37:52,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:37:52,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:37:52,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:37:52,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:37:52,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:37:52,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:37:52,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:37:52,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:37:52,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 04:37:52,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:37:52,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 04:37:52,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:37:52,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:37:52,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:37:52,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:37:52,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:37:52,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:37:52,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-14 04:37:52,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:37:52,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:37:52,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:37:52,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 04:37:52,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:37:52,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-14 04:37:52,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:37:52,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:37:52,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:37:52,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-14 04:37:52,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:37:52,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:37:53,012 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-10-14 04:37:53,013 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1437864060] [2020-10-14 04:37:53,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:37:53,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 04:37:53,013 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448468416] [2020-10-14 04:37:53,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:37:53,015 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:37:53,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:37:53,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:37:53,016 INFO L87 Difference]: Start difference. First operand 14511 states and 20408 transitions. Second operand 5 states.