/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label25.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 21:28:46,292 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 21:28:46,298 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 21:28:46,354 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 21:28:46,358 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 21:28:46,371 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 21:28:46,374 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 21:28:46,379 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 21:28:46,383 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 21:28:46,385 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 21:28:46,387 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 21:28:46,390 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 21:28:46,391 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 21:28:46,394 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 21:28:46,398 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 21:28:46,401 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 21:28:46,404 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 21:28:46,405 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 21:28:46,407 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 21:28:46,418 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 21:28:46,423 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 21:28:46,425 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 21:28:46,427 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 21:28:46,428 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 21:28:46,432 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 21:28:46,433 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 21:28:46,433 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 21:28:46,437 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 21:28:46,438 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 21:28:46,439 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 21:28:46,440 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 21:28:46,441 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 21:28:46,442 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 21:28:46,443 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 21:28:46,445 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 21:28:46,445 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 21:28:46,446 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 21:28:46,446 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 21:28:46,446 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 21:28:46,448 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 21:28:46,450 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 21:28:46,453 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 21:28:46,506 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 21:28:46,506 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 21:28:46,510 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 21:28:46,511 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 21:28:46,511 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 21:28:46,511 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 21:28:46,512 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 21:28:46,512 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 21:28:46,512 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 21:28:46,512 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 21:28:46,514 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 21:28:46,515 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 21:28:46,515 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 21:28:46,516 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 21:28:46,516 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 21:28:46,516 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 21:28:46,516 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 21:28:46,517 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 21:28:46,517 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 21:28:46,517 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 21:28:46,517 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 21:28:46,518 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:28:46,518 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 21:28:46,518 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 21:28:46,518 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 21:28:46,518 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 21:28:46,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 21:28:46,519 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 21:28:46,519 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 21:28:46,519 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 21:28:46,946 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 21:28:46,964 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 21:28:46,970 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 21:28:46,972 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 21:28:46,973 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 21:28:46,974 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label25.c [2020-10-14 21:28:47,069 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3eb341796/a8f1a78e9d994ea8afad918358a704a8/FLAGc26eaac7a [2020-10-14 21:28:48,181 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 21:28:48,182 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label25.c [2020-10-14 21:28:48,244 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3eb341796/a8f1a78e9d994ea8afad918358a704a8/FLAGc26eaac7a [2020-10-14 21:28:48,521 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3eb341796/a8f1a78e9d994ea8afad918358a704a8 [2020-10-14 21:28:48,539 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 21:28:48,545 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 21:28:48,548 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 21:28:48,549 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 21:28:48,556 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 21:28:48,558 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:28:48" (1/1) ... [2020-10-14 21:28:48,565 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30a48022 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:28:48, skipping insertion in model container [2020-10-14 21:28:48,566 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:28:48" (1/1) ... [2020-10-14 21:28:48,586 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 21:28:48,877 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 21:28:50,960 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:28:50,971 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 21:28:52,071 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:28:52,122 INFO L208 MainTranslator]: Completed translation [2020-10-14 21:28:52,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:28:52 WrapperNode [2020-10-14 21:28:52,125 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 21:28:52,127 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 21:28:52,128 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 21:28:52,128 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 21:28:52,150 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:28:52" (1/1) ... [2020-10-14 21:28:52,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:28:52" (1/1) ... [2020-10-14 21:28:52,272 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:28:52" (1/1) ... [2020-10-14 21:28:52,272 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:28:52" (1/1) ... [2020-10-14 21:28:52,432 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:28:52" (1/1) ... [2020-10-14 21:28:52,474 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:28:52" (1/1) ... [2020-10-14 21:28:52,525 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:28:52" (1/1) ... [2020-10-14 21:28:52,576 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 21:28:52,577 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 21:28:52,577 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 21:28:52,577 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 21:28:52,579 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:28:52" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:28:52,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 21:28:52,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 21:28:52,693 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 21:28:52,693 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 21:28:52,693 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 21:28:52,694 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 21:28:52,694 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 21:28:52,698 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 21:28:52,698 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 21:28:52,698 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 21:28:52,698 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 21:28:52,699 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 21:28:52,699 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 21:28:52,699 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 21:28:52,699 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 21:28:52,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 21:28:52,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 21:29:07,272 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 21:29:07,273 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 21:29:07,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:29:07 BoogieIcfgContainer [2020-10-14 21:29:07,288 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 21:29:07,290 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 21:29:07,290 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 21:29:07,294 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 21:29:07,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:28:48" (1/3) ... [2020-10-14 21:29:07,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d2ca91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:29:07, skipping insertion in model container [2020-10-14 21:29:07,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:28:52" (2/3) ... [2020-10-14 21:29:07,296 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d2ca91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:29:07, skipping insertion in model container [2020-10-14 21:29:07,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:29:07" (3/3) ... [2020-10-14 21:29:07,299 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label25.c [2020-10-14 21:29:07,313 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 21:29:07,326 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 21:29:07,347 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 21:29:07,386 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 21:29:07,387 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 21:29:07,387 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 21:29:07,387 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 21:29:07,387 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 21:29:07,387 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 21:29:07,387 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 21:29:07,388 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 21:29:07,436 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-14 21:29:07,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-14 21:29:07,445 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:29:07,446 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] [2020-10-14 21:29:07,447 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:29:07,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:29:07,456 INFO L82 PathProgramCache]: Analyzing trace with hash 1804033680, now seen corresponding path program 1 times [2020-10-14 21:29:07,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:29:07,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1536130941] [2020-10-14 21:29:07,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:29:07,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:29:07,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:08,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:29:08,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-14 21:29:08,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:29:08,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 465 [2020-10-14 21:29:08,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:29:08,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:29:08,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:29:08,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:29:08,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 21:29:08,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-14 21:29:08,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:29:08,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:29:08,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:08,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:29:08,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:29:08,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:29:08,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 21:29:08,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:29:08,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:29:08,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:29:08,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:29:08,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:29:08,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:29:08,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:29:08,333 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1536130941] [2020-10-14 21:29:08,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:29:08,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 21:29:08,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409308515] [2020-10-14 21:29:08,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 21:29:08,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:29:08,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 21:29:08,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 21:29:08,377 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 4 states. [2020-10-14 21:29:25,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:29:25,748 INFO L93 Difference]: Finished difference Result 3152 states and 5831 transitions. [2020-10-14 21:29:25,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:29:25,754 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-10-14 21:29:25,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:29:25,794 INFO L225 Difference]: With dead ends: 3152 [2020-10-14 21:29:25,795 INFO L226 Difference]: Without dead ends: 1954 [2020-10-14 21:29:25,814 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:29:25,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1954 states. [2020-10-14 21:29:25,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1954 to 1885. [2020-10-14 21:29:26,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1885 states. [2020-10-14 21:29:26,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1885 states to 1885 states and 3103 transitions. [2020-10-14 21:29:26,018 INFO L78 Accepts]: Start accepts. Automaton has 1885 states and 3103 transitions. Word has length 29 [2020-10-14 21:29:26,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:29:26,022 INFO L479 AbstractCegarLoop]: Abstraction has 1885 states and 3103 transitions. [2020-10-14 21:29:26,022 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 21:29:26,022 INFO L276 IsEmpty]: Start isEmpty. Operand 1885 states and 3103 transitions. [2020-10-14 21:29:26,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-14 21:29:26,032 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:29:26,033 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:29:26,034 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 21:29:26,034 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:29:26,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:29:26,035 INFO L82 PathProgramCache]: Analyzing trace with hash -678409448, now seen corresponding path program 1 times [2020-10-14 21:29:26,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:29:26,035 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1855924601] [2020-10-14 21:29:26,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:29:26,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:29:26,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:26,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:27,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:29:27,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 21:29:27,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:29:27,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1409 [2020-10-14 21:29:27,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:29:27,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:29:27,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:29:27,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:29:27,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 21:29:27,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:29:27,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:29:27,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:29:27,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:27,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:29:27,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:29:27,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:29:27,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 21:29:27,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:29:27,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:29:27,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:29:27,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:29:27,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:29:27,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:29:27,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:29:27,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:29:27,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:27,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:29:27,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 21:29:27,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:29:27,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 284 [2020-10-14 21:29:27,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:29:27,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:29:27,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:29:27,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:29:27,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 21:29:27,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:29:28,093 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:29:28,094 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1855924601] [2020-10-14 21:29:28,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:29:28,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:29:28,096 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989868285] [2020-10-14 21:29:28,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:29:28,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:29:28,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:29:28,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:29:28,101 INFO L87 Difference]: Start difference. First operand 1885 states and 3103 transitions. Second operand 7 states. [2020-10-14 21:29:53,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:29:53,498 INFO L93 Difference]: Finished difference Result 5666 states and 9316 transitions. [2020-10-14 21:29:53,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 21:29:53,500 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 99 [2020-10-14 21:29:53,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:29:53,525 INFO L225 Difference]: With dead ends: 5666 [2020-10-14 21:29:53,526 INFO L226 Difference]: Without dead ends: 3787 [2020-10-14 21:29:53,532 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 21:29:53,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3787 states. [2020-10-14 21:29:53,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3787 to 3706. [2020-10-14 21:29:53,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3706 states. [2020-10-14 21:29:53,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3706 states to 3706 states and 5584 transitions. [2020-10-14 21:29:53,668 INFO L78 Accepts]: Start accepts. Automaton has 3706 states and 5584 transitions. Word has length 99 [2020-10-14 21:29:53,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:29:53,668 INFO L479 AbstractCegarLoop]: Abstraction has 3706 states and 5584 transitions. [2020-10-14 21:29:53,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:29:53,669 INFO L276 IsEmpty]: Start isEmpty. Operand 3706 states and 5584 transitions. [2020-10-14 21:29:53,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-14 21:29:53,678 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:29:53,678 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:29:53,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 21:29:53,679 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:29:53,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:29:53,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1989320437, now seen corresponding path program 1 times [2020-10-14 21:29:53,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:29:53,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [859279511] [2020-10-14 21:29:53,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:29:53,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:29:53,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:53,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:54,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:29:54,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 21:29:54,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:29:54,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 785 [2020-10-14 21:29:54,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:29:54,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:29:54,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:29:54,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:29:54,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 21:29:54,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:29:54,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:29:54,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:29:54,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:54,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:29:54,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:29:54,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:29:54,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 21:29:54,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:29:54,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:29:54,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:29:54,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:29:54,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:29:54,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:29:54,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:29:54,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:29:54,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:54,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:29:54,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:29:54,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:29:54,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-14 21:29:54,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:29:54,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:29:54,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:29:54,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:29:54,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 21:29:54,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:29:54,975 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:29:54,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [859279511] [2020-10-14 21:29:54,976 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:29:54,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:29:54,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593570920] [2020-10-14 21:29:54,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:29:54,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:29:54,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:29:54,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:29:54,978 INFO L87 Difference]: Start difference. First operand 3706 states and 5584 transitions. Second operand 7 states. [2020-10-14 21:30:22,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:30:22,812 INFO L93 Difference]: Finished difference Result 8454 states and 13151 transitions. [2020-10-14 21:30:22,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 21:30:22,813 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 104 [2020-10-14 21:30:22,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:30:22,838 INFO L225 Difference]: With dead ends: 8454 [2020-10-14 21:30:22,838 INFO L226 Difference]: Without dead ends: 4754 [2020-10-14 21:30:22,848 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-14 21:30:22,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4754 states. [2020-10-14 21:30:22,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4754 to 4582. [2020-10-14 21:30:22,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4582 states. [2020-10-14 21:30:22,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4582 states to 4582 states and 6238 transitions. [2020-10-14 21:30:22,985 INFO L78 Accepts]: Start accepts. Automaton has 4582 states and 6238 transitions. Word has length 104 [2020-10-14 21:30:22,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:30:22,985 INFO L479 AbstractCegarLoop]: Abstraction has 4582 states and 6238 transitions. [2020-10-14 21:30:22,985 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:30:22,986 INFO L276 IsEmpty]: Start isEmpty. Operand 4582 states and 6238 transitions. [2020-10-14 21:30:22,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-14 21:30:22,987 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:30:22,987 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:30:22,988 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 21:30:22,988 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:30:22,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:30:22,988 INFO L82 PathProgramCache]: Analyzing trace with hash -339210055, now seen corresponding path program 1 times [2020-10-14 21:30:22,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:30:22,989 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1090164797] [2020-10-14 21:30:22,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:30:23,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:30:23,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:30:23,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:30:24,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:30:24,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:30:24,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-14 21:30:24,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:30:24,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1117 [2020-10-14 21:30:24,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:30:24,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:30:24,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:30:24,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:30:24,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 21:30:24,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:30:24,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:30:24,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:30:24,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:30:24,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:30:24,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:30:24,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:30:24,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 21:30:24,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:30:24,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:30:24,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:30:24,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:30:24,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:30:24,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:30:24,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:30:24,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:30:24,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:30:24,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:30:24,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:30:24,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 21:30:24,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:30:24,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 272 [2020-10-14 21:30:24,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:30:24,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:30:24,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:30:24,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:30:24,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 21:30:24,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:30:24,633 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 21:30:24,635 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1090164797] [2020-10-14 21:30:24,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:30:24,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:30:24,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524151499] [2020-10-14 21:30:24,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:30:24,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:30:24,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:30:24,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:30:24,640 INFO L87 Difference]: Start difference. First operand 4582 states and 6238 transitions. Second operand 7 states. [2020-10-14 21:30:50,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:30:50,513 INFO L93 Difference]: Finished difference Result 15117 states and 21752 transitions. [2020-10-14 21:30:50,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 21:30:50,515 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 106 [2020-10-14 21:30:50,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:30:50,564 INFO L225 Difference]: With dead ends: 15117 [2020-10-14 21:30:50,564 INFO L226 Difference]: Without dead ends: 10541 [2020-10-14 21:30:50,579 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-14 21:30:50,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10541 states. [2020-10-14 21:30:50,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10541 to 10507. [2020-10-14 21:30:50,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10507 states. [2020-10-14 21:30:50,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10507 states to 10507 states and 13786 transitions. [2020-10-14 21:30:50,894 INFO L78 Accepts]: Start accepts. Automaton has 10507 states and 13786 transitions. Word has length 106 [2020-10-14 21:30:50,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:30:50,895 INFO L479 AbstractCegarLoop]: Abstraction has 10507 states and 13786 transitions. [2020-10-14 21:30:50,895 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:30:50,895 INFO L276 IsEmpty]: Start isEmpty. Operand 10507 states and 13786 transitions. [2020-10-14 21:30:50,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-14 21:30:50,902 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:30:50,903 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:30:50,903 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 21:30:50,904 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:30:50,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:30:50,904 INFO L82 PathProgramCache]: Analyzing trace with hash -1503000058, now seen corresponding path program 1 times [2020-10-14 21:30:50,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:30:50,905 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1911160351] [2020-10-14 21:30:50,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:30:50,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:30:51,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:30:51,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:30:51,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:30:52,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:30:52,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-14 21:30:52,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:30:52,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1471 [2020-10-14 21:30:52,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:30:52,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:30:52,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:30:52,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-14 21:30:52,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 21:30:52,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:30:52,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:30:52,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:30:52,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:30:52,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:30:52,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:30:52,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:30:52,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 21:30:52,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:30:52,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:30:52,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:30:52,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:30:52,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:30:52,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:30:52,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:30:52,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:30:52,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:30:52,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:30:52,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 21:30:52,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:30:52,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-14 21:30:52,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:30:52,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:30:52,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:30:52,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:30:52,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 21:30:52,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 21:30:52,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-14 21:30:52,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:30:52,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:30:53,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:30:53,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 21:30:53,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:30:53,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-14 21:30:53,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:30:53,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:30:53,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:30:53,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:30:53,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 21:30:53,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:30:53,302 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:30:53,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1911160351] [2020-10-14 21:30:53,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:30:53,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:30:53,305 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497499986] [2020-10-14 21:30:53,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:30:53,306 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:30:53,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:30:53,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:30:53,307 INFO L87 Difference]: Start difference. First operand 10507 states and 13786 transitions. Second operand 7 states. [2020-10-14 21:31:26,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:31:26,008 INFO L93 Difference]: Finished difference Result 21676 states and 30841 transitions. [2020-10-14 21:31:26,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:31:26,011 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 248 [2020-10-14 21:31:26,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:31:26,104 INFO L225 Difference]: With dead ends: 21676 [2020-10-14 21:31:26,104 INFO L226 Difference]: Without dead ends: 16095 [2020-10-14 21:31:26,131 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:31:26,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16095 states. [2020-10-14 21:31:26,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16095 to 15847. [2020-10-14 21:31:26,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15847 states. [2020-10-14 21:31:26,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15847 states to 15847 states and 20149 transitions. [2020-10-14 21:31:26,561 INFO L78 Accepts]: Start accepts. Automaton has 15847 states and 20149 transitions. Word has length 248 [2020-10-14 21:31:26,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:31:26,563 INFO L479 AbstractCegarLoop]: Abstraction has 15847 states and 20149 transitions. [2020-10-14 21:31:26,563 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:31:26,564 INFO L276 IsEmpty]: Start isEmpty. Operand 15847 states and 20149 transitions. [2020-10-14 21:31:26,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-10-14 21:31:26,571 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:31:26,571 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:31:26,572 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 21:31:26,572 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:31:26,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:31:26,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1439551691, now seen corresponding path program 1 times [2020-10-14 21:31:26,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:31:26,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [749549055] [2020-10-14 21:31:26,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:31:26,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:31:26,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:31:26,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:31:27,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:31:31,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:31:31,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 288 [2020-10-14 21:31:31,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:31:31,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-14 21:31:31,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:31:31,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:31:31,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:31:31,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:31:31,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-14 21:31:31,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:31:31,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:31:31,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:31:31,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:31:31,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:31:31,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:31:31,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:31:31,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 21:31:31,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:31:31,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:31:31,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:31:31,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:31:31,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:31:31,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:31:31,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:31:31,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:31:31,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:31:32,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:31:32,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 21:31:32,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:31:32,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-10-14 21:31:32,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:31:32,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:31:32,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:31:32,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:31:32,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-14 21:31:32,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:31:32,383 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 13 [2020-10-14 21:31:32,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-14 21:31:32,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:31:32,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:31:32,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:31:32,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 21:31:32,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:31:32,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-14 21:31:32,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:31:32,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:31:32,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:31:32,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-14 21:31:32,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:31:32,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:31:32,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-10-14 21:31:32,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:31:32,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:31:32,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:31:32,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:31:32,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:31:32,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-14 21:31:32,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:31:32,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:31:32,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:31:32,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-14 21:31:32,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:31:32,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:31:32,930 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 66 proven. 142 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-14 21:31:32,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [749549055] [2020-10-14 21:31:32,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:31:32,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:31:32,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702480762] [2020-10-14 21:31:32,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:31:32,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:31:32,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:31:32,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:31:32,935 INFO L87 Difference]: Start difference. First operand 15847 states and 20149 transitions. Second operand 7 states. [2020-10-14 21:31:57,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:31:57,357 INFO L93 Difference]: Finished difference Result 31352 states and 40240 transitions. [2020-10-14 21:31:57,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 21:31:57,364 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 274 [2020-10-14 21:31:57,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:31:57,445 INFO L225 Difference]: With dead ends: 31352 [2020-10-14 21:31:57,445 INFO L226 Difference]: Without dead ends: 16314 [2020-10-14 21:31:57,493 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-14 21:31:57,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16314 states. [2020-10-14 21:31:57,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16314 to 16176. [2020-10-14 21:31:57,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16176 states. [2020-10-14 21:31:57,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16176 states to 16176 states and 20711 transitions. [2020-10-14 21:31:57,957 INFO L78 Accepts]: Start accepts. Automaton has 16176 states and 20711 transitions. Word has length 274 [2020-10-14 21:31:57,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:31:57,958 INFO L479 AbstractCegarLoop]: Abstraction has 16176 states and 20711 transitions. [2020-10-14 21:31:57,958 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:31:57,959 INFO L276 IsEmpty]: Start isEmpty. Operand 16176 states and 20711 transitions. [2020-10-14 21:31:57,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2020-10-14 21:31:57,971 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:31:57,972 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:31:57,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 21:31:57,973 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:31:57,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:31:57,974 INFO L82 PathProgramCache]: Analyzing trace with hash -1564143179, now seen corresponding path program 1 times [2020-10-14 21:31:57,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:31:57,974 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [602512797] [2020-10-14 21:31:57,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:31:58,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:31:58,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:31:58,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:31:59,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:31:59,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:32:03,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:32:03,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 290 [2020-10-14 21:32:03,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:32:03,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 21:32:03,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:32:03,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:32:03,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:32:03,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:32:03,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 255 [2020-10-14 21:32:03,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:32:03,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:32:03,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:32:03,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:32:03,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:32:03,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:32:03,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:32:03,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 21:32:03,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:32:03,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:32:03,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:32:03,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:32:03,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:32:03,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:32:03,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:32:03,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:32:03,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:32:03,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:32:03,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:32:03,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 21:32:03,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:32:03,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 306 [2020-10-14 21:32:03,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:32:03,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:32:03,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:32:03,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:32:03,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 21:32:03,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:32:03,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-14 21:32:03,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:32:03,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:32:04,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:32:04,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-14 21:32:04,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:32:04,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 267 [2020-10-14 21:32:04,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:32:04,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:32:04,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:32:04,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:32:04,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-14 21:32:04,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:32:04,856 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 156 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 21:32:04,856 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [602512797] [2020-10-14 21:32:04,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:32:04,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:32:04,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287719881] [2020-10-14 21:32:04,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:32:04,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:32:04,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:32:04,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:32:04,861 INFO L87 Difference]: Start difference. First operand 16176 states and 20711 transitions. Second operand 7 states.