/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_label57.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 21:37:43,518 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 21:37:43,521 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 21:37:43,549 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 21:37:43,549 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 21:37:43,550 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 21:37:43,552 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 21:37:43,554 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 21:37:43,555 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 21:37:43,556 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 21:37:43,557 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 21:37:43,558 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 21:37:43,558 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 21:37:43,559 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 21:37:43,560 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 21:37:43,562 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 21:37:43,562 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 21:37:43,563 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 21:37:43,565 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 21:37:43,567 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 21:37:43,568 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 21:37:43,572 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 21:37:43,573 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 21:37:43,577 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 21:37:43,582 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 21:37:43,583 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 21:37:43,584 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 21:37:43,585 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 21:37:43,585 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 21:37:43,588 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 21:37:43,588 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 21:37:43,589 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 21:37:43,589 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 21:37:43,590 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 21:37:43,592 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 21:37:43,592 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 21:37:43,593 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 21:37:43,593 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 21:37:43,593 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 21:37:43,604 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 21:37:43,606 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 21:37:43,607 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 21:37:43,663 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 21:37:43,663 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 21:37:43,665 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 21:37:43,665 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 21:37:43,665 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 21:37:43,666 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 21:37:43,666 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 21:37:43,666 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 21:37:43,666 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 21:37:43,666 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 21:37:43,667 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 21:37:43,667 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 21:37:43,667 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 21:37:43,667 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 21:37:43,667 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 21:37:43,667 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 21:37:43,668 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 21:37:43,668 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 21:37:43,668 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 21:37:43,668 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 21:37:43,668 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 21:37:43,669 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:37:43,669 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 21:37:43,669 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 21:37:43,669 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 21:37:43,669 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 21:37:43,670 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 21:37:43,670 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 21:37:43,670 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 21:37:43,670 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 21:37:44,002 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 21:37:44,025 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 21:37:44,028 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 21:37:44,030 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 21:37:44,030 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 21:37:44,031 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label57.c [2020-10-14 21:37:44,115 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/70d8877c9/9617fdc96ba74bbcb2ba5616364138b5/FLAG1036ac4ff [2020-10-14 21:37:45,023 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 21:37:45,023 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label57.c [2020-10-14 21:37:45,057 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/70d8877c9/9617fdc96ba74bbcb2ba5616364138b5/FLAG1036ac4ff [2020-10-14 21:37:45,106 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/70d8877c9/9617fdc96ba74bbcb2ba5616364138b5 [2020-10-14 21:37:45,119 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 21:37:45,123 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 21:37:45,126 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 21:37:45,126 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 21:37:45,130 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 21:37:45,132 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:37:45" (1/1) ... [2020-10-14 21:37:45,135 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25783b52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:45, skipping insertion in model container [2020-10-14 21:37:45,136 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:37:45" (1/1) ... [2020-10-14 21:37:45,147 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 21:37:45,356 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 21:37:47,150 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:37:47,160 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 21:37:47,970 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:37:48,006 INFO L208 MainTranslator]: Completed translation [2020-10-14 21:37:48,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:48 WrapperNode [2020-10-14 21:37:48,007 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 21:37:48,008 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 21:37:48,009 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 21:37:48,009 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 21:37:48,026 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:48" (1/1) ... [2020-10-14 21:37:48,028 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:48" (1/1) ... [2020-10-14 21:37:48,101 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:48" (1/1) ... [2020-10-14 21:37:48,102 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:48" (1/1) ... [2020-10-14 21:37:48,274 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:48" (1/1) ... [2020-10-14 21:37:48,326 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:48" (1/1) ... [2020-10-14 21:37:48,370 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:48" (1/1) ... [2020-10-14 21:37:48,417 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 21:37:48,417 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 21:37:48,418 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 21:37:48,418 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 21:37:48,419 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:48" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:37:48,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 21:37:48,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 21:37:48,518 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 21:37:48,518 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 21:37:48,518 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 21:37:48,518 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 21:37:48,518 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 21:37:48,520 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 21:37:48,520 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 21:37:48,520 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 21:37:48,520 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 21:37:48,520 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 21:37:48,521 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 21:37:48,521 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 21:37:48,521 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 21:37:48,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 21:37:48,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 21:38:00,726 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 21:38:00,727 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 21:38:00,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:38:00 BoogieIcfgContainer [2020-10-14 21:38:00,759 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 21:38:00,761 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 21:38:00,765 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 21:38:00,771 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 21:38:00,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:37:45" (1/3) ... [2020-10-14 21:38:00,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6994b245 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:38:00, skipping insertion in model container [2020-10-14 21:38:00,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:48" (2/3) ... [2020-10-14 21:38:00,773 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6994b245 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:38:00, skipping insertion in model container [2020-10-14 21:38:00,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:38:00" (3/3) ... [2020-10-14 21:38:00,777 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label57.c [2020-10-14 21:38:00,790 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 21:38:00,804 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 21:38:00,820 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 21:38:00,852 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 21:38:00,852 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 21:38:00,852 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 21:38:00,852 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 21:38:00,852 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 21:38:00,852 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 21:38:00,853 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 21:38:00,853 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 21:38:00,892 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-14 21:38:00,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-14 21:38:00,905 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:38:00,907 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:38:00,907 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:38:00,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:38:00,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1658720712, now seen corresponding path program 1 times [2020-10-14 21:38:00,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:38:00,925 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [954132627] [2020-10-14 21:38:00,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:38:01,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:38:01,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:38:01,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:38:01,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 21:38:01,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:38:01,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 522 [2020-10-14 21:38:01,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:38:01,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:38:01,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:38:01,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:38:01,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 21:38:01,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 21:38:01,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:38:01,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:38:01,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:38:01,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:38:01,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:38:01,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:38:01,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 21:38:01,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:38:01,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:38:01,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:38:01,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:38:01,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:38:01,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:38:01,845 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 21:38:01,846 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [954132627] [2020-10-14 21:38:01,954 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:38:01,955 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 21:38:01,956 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475880854] [2020-10-14 21:38:01,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 21:38:01,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:38:01,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 21:38:01,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 21:38:01,985 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 4 states. [2020-10-14 21:38:15,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:38:15,023 INFO L93 Difference]: Finished difference Result 3230 states and 5909 transitions. [2020-10-14 21:38:15,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:38:15,027 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-10-14 21:38:15,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:38:15,071 INFO L225 Difference]: With dead ends: 3230 [2020-10-14 21:38:15,072 INFO L226 Difference]: Without dead ends: 2026 [2020-10-14 21:38:15,088 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 21:38:15,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2026 states. [2020-10-14 21:38:15,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2026 to 2009. [2020-10-14 21:38:15,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2009 states. [2020-10-14 21:38:15,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2009 states to 2009 states and 3291 transitions. [2020-10-14 21:38:15,289 INFO L78 Accepts]: Start accepts. Automaton has 2009 states and 3291 transitions. Word has length 67 [2020-10-14 21:38:15,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:38:15,290 INFO L479 AbstractCegarLoop]: Abstraction has 2009 states and 3291 transitions. [2020-10-14 21:38:15,290 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 21:38:15,290 INFO L276 IsEmpty]: Start isEmpty. Operand 2009 states and 3291 transitions. [2020-10-14 21:38:15,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-14 21:38:15,296 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:38:15,297 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:38:15,297 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 21:38:15,297 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:38:15,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:38:15,298 INFO L82 PathProgramCache]: Analyzing trace with hash -279302963, now seen corresponding path program 1 times [2020-10-14 21:38:15,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:38:15,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2075932659] [2020-10-14 21:38:15,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:38:15,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:38:15,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:38:15,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:38:16,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:38:17,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:38:17,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-14 21:38:17,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:38:17,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2518 [2020-10-14 21:38:17,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:38:17,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:38:17,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:38:17,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 21:38:17,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 21:38:17,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 21:38:18,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:38:18,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:38:18,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:38:18,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:38:18,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:38:18,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:38:18,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 21:38:18,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:38:18,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:38:18,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:38:18,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:38:18,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:38:18,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:38:18,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:38:18,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:38:18,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:38:18,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:38:18,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:38:18,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:38:18,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-14 21:38:18,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:38:18,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:38:18,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:38:18,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:38:18,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 21:38:18,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:38:18,271 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:38:18,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2075932659] [2020-10-14 21:38:18,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:38:18,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:38:18,273 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529618657] [2020-10-14 21:38:18,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:38:18,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:38:18,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:38:18,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:38:18,276 INFO L87 Difference]: Start difference. First operand 2009 states and 3291 transitions. Second operand 5 states. [2020-10-14 21:38:34,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:38:34,950 INFO L93 Difference]: Finished difference Result 5698 states and 9456 transitions. [2020-10-14 21:38:34,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:38:34,952 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-10-14 21:38:34,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:38:34,977 INFO L225 Difference]: With dead ends: 5698 [2020-10-14 21:38:34,978 INFO L226 Difference]: Without dead ends: 3695 [2020-10-14 21:38:34,985 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 21:38:34,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3695 states. [2020-10-14 21:38:35,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3695 to 3681. [2020-10-14 21:38:35,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3681 states. [2020-10-14 21:38:35,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3681 states to 3681 states and 5506 transitions. [2020-10-14 21:38:35,093 INFO L78 Accepts]: Start accepts. Automaton has 3681 states and 5506 transitions. Word has length 142 [2020-10-14 21:38:35,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:38:35,095 INFO L479 AbstractCegarLoop]: Abstraction has 3681 states and 5506 transitions. [2020-10-14 21:38:35,095 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:38:35,095 INFO L276 IsEmpty]: Start isEmpty. Operand 3681 states and 5506 transitions. [2020-10-14 21:38:35,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-14 21:38:35,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:38:35,100 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:38:35,100 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 21:38:35,100 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:38:35,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:38:35,101 INFO L82 PathProgramCache]: Analyzing trace with hash -1217580695, now seen corresponding path program 1 times [2020-10-14 21:38:35,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:38:35,101 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1704480396] [2020-10-14 21:38:35,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:38:35,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:38:35,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:38:35,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:38:36,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:38:36,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-14 21:38:36,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:38:36,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1247 [2020-10-14 21:38:36,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:38:36,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:38:36,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:38:36,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:38:36,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 21:38:36,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:38:36,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:38:36,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:38:36,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:38:36,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:38:36,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:38:36,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:38:36,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 21:38:36,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:38:36,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:38:36,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:38:36,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:38:36,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:38:36,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:38:36,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:38:36,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:38:36,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:38:36,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:38:36,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 21:38:36,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:38:36,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-14 21:38:36,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:38:36,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:38:36,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:38:36,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:38:36,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 21:38:36,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:38:36,835 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:38:36,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1704480396] [2020-10-14 21:38:36,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:38:36,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:38:36,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055833433] [2020-10-14 21:38:36,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:38:36,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:38:36,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:38:36,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:38:36,841 INFO L87 Difference]: Start difference. First operand 3681 states and 5506 transitions. Second operand 7 states. [2020-10-14 21:38:55,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:38:55,016 INFO L93 Difference]: Finished difference Result 10817 states and 16552 transitions. [2020-10-14 21:38:55,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:38:55,018 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 156 [2020-10-14 21:38:55,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:38:55,061 INFO L225 Difference]: With dead ends: 10817 [2020-10-14 21:38:55,061 INFO L226 Difference]: Without dead ends: 7142 [2020-10-14 21:38:55,074 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:38:55,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7142 states. [2020-10-14 21:38:55,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7142 to 7066. [2020-10-14 21:38:55,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7066 states. [2020-10-14 21:38:55,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7066 states to 7066 states and 9704 transitions. [2020-10-14 21:38:55,318 INFO L78 Accepts]: Start accepts. Automaton has 7066 states and 9704 transitions. Word has length 156 [2020-10-14 21:38:55,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:38:55,327 INFO L479 AbstractCegarLoop]: Abstraction has 7066 states and 9704 transitions. [2020-10-14 21:38:55,328 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:38:55,328 INFO L276 IsEmpty]: Start isEmpty. Operand 7066 states and 9704 transitions. [2020-10-14 21:38:55,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-10-14 21:38:55,343 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:38:55,343 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:38:55,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 21:38:55,344 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:38:55,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:38:55,345 INFO L82 PathProgramCache]: Analyzing trace with hash -771860084, now seen corresponding path program 1 times [2020-10-14 21:38:55,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:38:55,346 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [711075530] [2020-10-14 21:38:55,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:38:55,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:38:55,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:38:55,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:38:55,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:38:57,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:39:00,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:39:00,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 247 [2020-10-14 21:39:00,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:39:00,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 21:39:00,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:39:00,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:39:00,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:39:00,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 21:39:00,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 21:39:00,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 21:39:00,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:39:00,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:39:00,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:39:00,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:39:00,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:39:00,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:39:00,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 21:39:00,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:39:00,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:39:00,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:39:00,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:39:00,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:39:00,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:39:00,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:39:00,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:39:00,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:39:00,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:39:00,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:39:00,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:39:00,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-14 21:39:00,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:39:00,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:39:00,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:39:00,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:39:00,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 21:39:00,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:39:00,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 21:39:00,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:39:00,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:39:00,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:39:00,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 21:39:00,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:39:00,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-14 21:39:00,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:39:00,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:39:00,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:39:00,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:39:00,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-14 21:39:00,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:39:01,179 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 192 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:39:01,180 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [711075530] [2020-10-14 21:39:01,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:39:01,181 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:39:01,181 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576070230] [2020-10-14 21:39:01,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:39:01,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:39:01,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:39:01,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:39:01,184 INFO L87 Difference]: Start difference. First operand 7066 states and 9704 transitions. Second operand 7 states. [2020-10-14 21:39:22,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:39:22,224 INFO L93 Difference]: Finished difference Result 14226 states and 19886 transitions. [2020-10-14 21:39:22,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 21:39:22,227 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 235 [2020-10-14 21:39:22,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:39:22,270 INFO L225 Difference]: With dead ends: 14226 [2020-10-14 21:39:22,270 INFO L226 Difference]: Without dead ends: 7166 [2020-10-14 21:39:22,289 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 21:39:22,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7166 states. [2020-10-14 21:39:22,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7166 to 7103. [2020-10-14 21:39:22,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7103 states. [2020-10-14 21:39:22,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7103 states to 7103 states and 8960 transitions. [2020-10-14 21:39:22,469 INFO L78 Accepts]: Start accepts. Automaton has 7103 states and 8960 transitions. Word has length 235 [2020-10-14 21:39:22,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:39:22,470 INFO L479 AbstractCegarLoop]: Abstraction has 7103 states and 8960 transitions. [2020-10-14 21:39:22,470 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:39:22,470 INFO L276 IsEmpty]: Start isEmpty. Operand 7103 states and 8960 transitions. [2020-10-14 21:39:22,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-10-14 21:39:22,475 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:39:22,475 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:39:22,475 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 21:39:22,475 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:39:22,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:39:22,476 INFO L82 PathProgramCache]: Analyzing trace with hash 413931344, now seen corresponding path program 1 times [2020-10-14 21:39:22,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:39:22,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1817498036] [2020-10-14 21:39:22,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:39:22,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:39:22,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:39:22,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:39:22,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:39:24,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:39:27,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:39:27,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 249 [2020-10-14 21:39:27,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:39:27,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 21:39:27,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:39:27,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:39:27,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:39:27,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 21:39:27,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-14 21:39:27,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:39:27,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:39:27,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:39:27,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:39:27,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:39:27,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:39:27,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:39:27,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:39:27,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:39:27,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:39:27,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:39:27,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:39:27,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:39:27,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:39:27,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:39:27,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:39:27,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:39:27,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:39:27,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:39:27,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:39:27,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-14 21:39:27,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:39:27,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:39:27,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:39:27,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:39:27,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 21:39:27,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:39:27,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 21:39:27,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:39:27,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:39:28,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:39:28,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 21:39:28,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:39:28,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-14 21:39:28,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:39:28,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:39:28,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:39:28,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:39:28,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 21:39:28,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:39:28,261 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 192 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:39:28,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1817498036] [2020-10-14 21:39:28,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:39:28,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:39:28,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016576927] [2020-10-14 21:39:28,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:39:28,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:39:28,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:39:28,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:39:28,265 INFO L87 Difference]: Start difference. First operand 7103 states and 8960 transitions. Second operand 7 states. [2020-10-14 21:40:00,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:40:00,079 INFO L93 Difference]: Finished difference Result 17984 states and 23264 transitions. [2020-10-14 21:40:00,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:40:00,081 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 237 [2020-10-14 21:40:00,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:40:00,156 INFO L225 Difference]: With dead ends: 17984 [2020-10-14 21:40:00,157 INFO L226 Difference]: Without dead ends: 10887 [2020-10-14 21:40:00,175 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:40:00,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10887 states. [2020-10-14 21:40:00,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10887 to 10781. [2020-10-14 21:40:00,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10781 states. [2020-10-14 21:40:00,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10781 states to 10781 states and 13271 transitions. [2020-10-14 21:40:00,509 INFO L78 Accepts]: Start accepts. Automaton has 10781 states and 13271 transitions. Word has length 237 [2020-10-14 21:40:00,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:40:00,510 INFO L479 AbstractCegarLoop]: Abstraction has 10781 states and 13271 transitions. [2020-10-14 21:40:00,510 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:40:00,510 INFO L276 IsEmpty]: Start isEmpty. Operand 10781 states and 13271 transitions. [2020-10-14 21:40:00,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-10-14 21:40:00,520 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:40:00,521 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:40:00,521 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 21:40:00,522 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:40:00,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:40:00,522 INFO L82 PathProgramCache]: Analyzing trace with hash -559336236, now seen corresponding path program 1 times [2020-10-14 21:40:00,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:40:00,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [785499032] [2020-10-14 21:40:00,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:40:00,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:40:00,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:40:00,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:40:02,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:40:02,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:40:05,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:40:05,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:40:05,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 267 [2020-10-14 21:40:05,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 21:40:05,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 21:40:05,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:40:05,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:40:05,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:40:05,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-14 21:40:05,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-14 21:40:05,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:40:05,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:40:05,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:40:05,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:40:05,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:40:05,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:40:05,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:40:05,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 21:40:05,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:40:05,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:40:05,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:40:05,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:40:05,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:40:05,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:40:05,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:40:05,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:40:05,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:40:06,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:40:06,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-14 21:40:06,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:40:06,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-14 21:40:06,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:40:06,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:40:06,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:40:06,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:40:06,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-14 21:40:06,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:40:06,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-14 21:40:06,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:40:06,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:40:06,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:40:06,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:40:06,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 21:40:06,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:40:06,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239 [2020-10-14 21:40:06,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:40:06,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:40:06,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:40:06,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:40:06,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 21:40:06,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:40:06,594 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 118 proven. 6 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-14 21:40:06,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [785499032] [2020-10-14 21:40:06,595 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:40:06,595 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 21:40:06,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195967406] [2020-10-14 21:40:06,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 21:40:06,597 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:40:06,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 21:40:06,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:40:06,597 INFO L87 Difference]: Start difference. First operand 10781 states and 13271 transitions. Second operand 6 states. [2020-10-14 21:40:32,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:40:32,400 INFO L93 Difference]: Finished difference Result 22394 states and 28002 transitions. [2020-10-14 21:40:32,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:40:32,406 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 255 [2020-10-14 21:40:32,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:40:32,451 INFO L225 Difference]: With dead ends: 22394 [2020-10-14 21:40:32,452 INFO L226 Difference]: Without dead ends: 11619 [2020-10-14 21:40:32,473 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:40:32,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11619 states. [2020-10-14 21:40:32,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11619 to 11592. [2020-10-14 21:40:32,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11592 states. [2020-10-14 21:40:32,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11592 states to 11592 states and 13946 transitions. [2020-10-14 21:40:32,782 INFO L78 Accepts]: Start accepts. Automaton has 11592 states and 13946 transitions. Word has length 255 [2020-10-14 21:40:32,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:40:32,783 INFO L479 AbstractCegarLoop]: Abstraction has 11592 states and 13946 transitions. [2020-10-14 21:40:32,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 21:40:32,783 INFO L276 IsEmpty]: Start isEmpty. Operand 11592 states and 13946 transitions. [2020-10-14 21:40:32,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2020-10-14 21:40:32,796 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:40:32,796 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:40:32,797 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 21:40:32,798 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:40:32,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:40:32,798 INFO L82 PathProgramCache]: Analyzing trace with hash 991817262, now seen corresponding path program 1 times [2020-10-14 21:40:32,799 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:40:32,799 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [827088772] [2020-10-14 21:40:32,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:40:32,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:40:32,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:40:33,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:40:33,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:40:35,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:40:37,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:40:37,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-14 21:40:37,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:40:37,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 21:40:37,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:40:37,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:40:37,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:40:37,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:40:37,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-14 21:40:37,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:40:38,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:40:38,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:40:38,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:40:38,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:40:38,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:40:38,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:40:38,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 21:40:38,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:40:38,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:40:38,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:40:38,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:40:38,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:40:38,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 21:40:38,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:40:38,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:40:38,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:40:38,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:40:38,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 21:40:38,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:40:38,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-14 21:40:38,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:40:38,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:40:38,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:40:38,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:40:38,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-14 21:40:38,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:40:38,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-14 21:40:38,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:40:38,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:40:38,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:40:38,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 21:40:38,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:40:38,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-14 21:40:38,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:40:38,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:40:38,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:40:38,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:40:38,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-14 21:40:38,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:40:39,033 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 207 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 21:40:39,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [827088772] [2020-10-14 21:40:39,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:40:39,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:40:39,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573172540] [2020-10-14 21:40:39,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 21:40:39,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:40:39,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 21:40:39,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:40:39,037 INFO L87 Difference]: Start difference. First operand 11592 states and 13946 transitions. Second operand 8 states. [2020-10-14 21:41:14,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:41:14,113 INFO L93 Difference]: Finished difference Result 29895 states and 36705 transitions. [2020-10-14 21:41:14,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:41:14,116 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 262 [2020-10-14 21:41:14,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:41:14,188 INFO L225 Difference]: With dead ends: 29895 [2020-10-14 21:41:14,188 INFO L226 Difference]: Without dead ends: 17501 [2020-10-14 21:41:14,213 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-14 21:41:14,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17501 states. [2020-10-14 21:41:14,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17501 to 17021. [2020-10-14 21:41:14,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17021 states. [2020-10-14 21:41:14,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17021 states to 17021 states and 19967 transitions. [2020-10-14 21:41:14,623 INFO L78 Accepts]: Start accepts. Automaton has 17021 states and 19967 transitions. Word has length 262 [2020-10-14 21:41:14,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:41:14,624 INFO L479 AbstractCegarLoop]: Abstraction has 17021 states and 19967 transitions. [2020-10-14 21:41:14,624 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 21:41:14,624 INFO L276 IsEmpty]: Start isEmpty. Operand 17021 states and 19967 transitions. [2020-10-14 21:41:14,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2020-10-14 21:41:14,630 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:41:14,631 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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 21:41:14,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 21:41:14,631 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:41:14,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:41:14,632 INFO L82 PathProgramCache]: Analyzing trace with hash 2032846276, now seen corresponding path program 1 times [2020-10-14 21:41:14,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:41:14,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [989431873] [2020-10-14 21:41:14,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:41:14,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:41:14,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:41:14,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:41:15,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:41:18,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:41:18,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 279 [2020-10-14 21:41:18,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:41:18,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3829 [2020-10-14 21:41:18,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:41:18,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:41:18,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:41:18,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-14 21:41:18,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 21:41:18,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:41:18,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:41:18,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:41:18,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:41:18,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:41:18,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:41:18,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:41:18,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:41:18,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:41:18,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:41:18,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:41:18,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:41:18,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:41:18,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:41:18,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:41:18,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:41:18,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:41:18,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:41:18,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 21:41:18,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:41:18,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-14 21:41:18,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:41:18,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:41:18,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:41:18,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:41:18,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 21:41:18,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:41:18,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-14 21:41:18,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:41:18,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:41:18,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:41:18,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 21:41:18,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:41:18,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-14 21:41:18,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:41:18,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:41:18,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:41:18,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:41:18,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-14 21:41:18,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:41:19,053 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 210 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:41:19,053 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [989431873] [2020-10-14 21:41:19,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:41:19,054 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:41:19,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322235698] [2020-10-14 21:41:19,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:41:19,055 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:41:19,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:41:19,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:41:19,055 INFO L87 Difference]: Start difference. First operand 17021 states and 19967 transitions. Second operand 7 states.