/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem04_label56.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 01:11:42,486 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 01:11:42,489 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 01:11:42,529 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 01:11:42,529 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 01:11:42,532 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 01:11:42,540 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 01:11:42,545 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 01:11:42,547 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 01:11:42,548 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 01:11:42,549 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 01:11:42,550 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 01:11:42,551 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 01:11:42,552 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 01:11:42,554 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 01:11:42,556 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 01:11:42,558 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 01:11:42,559 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 01:11:42,564 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 01:11:42,567 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 01:11:42,571 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 01:11:42,572 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 01:11:42,575 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 01:11:42,576 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 01:11:42,582 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 01:11:42,582 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 01:11:42,582 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 01:11:42,585 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 01:11:42,586 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 01:11:42,588 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 01:11:42,589 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 01:11:42,589 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 01:11:42,591 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 01:11:42,592 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 01:11:42,593 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 01:11:42,593 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 01:11:42,594 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 01:11:42,594 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 01:11:42,594 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 01:11:42,595 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 01:11:42,597 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 01:11:42,597 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 01:11:42,641 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 01:11:42,642 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 01:11:42,644 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 01:11:42,645 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 01:11:42,645 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 01:11:42,645 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 01:11:42,645 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 01:11:42,645 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 01:11:42,646 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 01:11:42,646 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 01:11:42,647 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 01:11:42,647 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 01:11:42,647 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 01:11:42,648 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 01:11:42,648 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 01:11:42,648 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 01:11:42,648 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 01:11:42,649 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 01:11:42,649 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 01:11:42,649 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 01:11:42,649 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 01:11:42,649 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 01:11:42,650 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 01:11:42,650 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 01:11:42,650 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 01:11:42,650 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 01:11:42,650 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 01:11:42,650 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 01:11:42,651 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 01:11:42,651 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 01:11:42,958 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 01:11:42,970 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 01:11:42,974 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 01:11:42,975 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 01:11:42,976 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 01:11:42,977 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label56.c [2020-10-14 01:11:43,036 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7f3da8632/2e44b785fb6d42eb81aad3488ac50dd1/FLAGf585b867f [2020-10-14 01:11:43,828 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 01:11:43,829 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label56.c [2020-10-14 01:11:43,870 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7f3da8632/2e44b785fb6d42eb81aad3488ac50dd1/FLAGf585b867f [2020-10-14 01:11:44,385 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7f3da8632/2e44b785fb6d42eb81aad3488ac50dd1 [2020-10-14 01:11:44,394 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 01:11:44,396 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 01:11:44,397 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 01:11:44,397 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 01:11:44,401 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 01:11:44,402 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:11:44" (1/1) ... [2020-10-14 01:11:44,407 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21f7a528 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:11:44, skipping insertion in model container [2020-10-14 01:11:44,407 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:11:44" (1/1) ... [2020-10-14 01:11:44,415 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 01:11:44,553 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 01:11:46,172 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 01:11:46,180 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 01:11:46,873 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 01:11:46,909 INFO L208 MainTranslator]: Completed translation [2020-10-14 01:11:46,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:11:46 WrapperNode [2020-10-14 01:11:46,911 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 01:11:46,912 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 01:11:46,912 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 01:11:46,912 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 01:11:46,927 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:11:46" (1/1) ... [2020-10-14 01:11:46,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:11:46" (1/1) ... [2020-10-14 01:11:46,995 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:11:46" (1/1) ... [2020-10-14 01:11:46,996 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:11:46" (1/1) ... [2020-10-14 01:11:47,141 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:11:46" (1/1) ... [2020-10-14 01:11:47,177 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:11:46" (1/1) ... [2020-10-14 01:11:47,208 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:11:46" (1/1) ... [2020-10-14 01:11:47,242 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 01:11:47,243 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 01:11:47,243 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 01:11:47,243 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 01:11:47,245 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:11:46" (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 01:11:47,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 01:11:47,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 01:11:47,323 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 01:11:47,323 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 01:11:47,324 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 01:11:47,324 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 01:11:47,324 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 01:11:47,324 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 01:11:47,325 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 01:11:47,325 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 01:11:47,325 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 01:11:47,325 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 01:11:47,325 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 01:11:47,326 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 01:11:47,326 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 01:11:47,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 01:11:47,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 01:11:52,294 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 01:11:52,294 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 01:11:52,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:11:52 BoogieIcfgContainer [2020-10-14 01:11:52,306 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 01:11:52,307 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 01:11:52,307 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 01:11:52,310 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 01:11:52,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 01:11:44" (1/3) ... [2020-10-14 01:11:52,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d805924 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:11:52, skipping insertion in model container [2020-10-14 01:11:52,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:11:46" (2/3) ... [2020-10-14 01:11:52,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d805924 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:11:52, skipping insertion in model container [2020-10-14 01:11:52,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:11:52" (3/3) ... [2020-10-14 01:11:52,314 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label56.c [2020-10-14 01:11:52,325 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 01:11:52,334 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 01:11:52,348 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 01:11:52,378 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 01:11:52,378 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 01:11:52,378 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 01:11:52,379 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 01:11:52,379 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 01:11:52,379 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 01:11:52,379 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 01:11:52,379 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 01:11:52,417 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states. [2020-10-14 01:11:52,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 813 [2020-10-14 01:11:52,473 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:11:52,475 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:11:52,476 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:11:52,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:11:52,483 INFO L82 PathProgramCache]: Analyzing trace with hash -1111722653, now seen corresponding path program 1 times [2020-10-14 01:11:52,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:11:52,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2655020] [2020-10-14 01:11:52,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:11:53,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:11:53,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:11:57,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:11:58,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:11:58,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 826 [2020-10-14 01:11:58,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:11:58,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5079 [2020-10-14 01:11:58,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:11:58,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:11:58,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 01:11:58,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:11:58,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 820 [2020-10-14 01:11:58,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 01:11:59,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:11:59,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:11:59,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:11:59,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:11:59,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:11:59,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:11:59,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 01:11:59,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:11:59,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:11:59,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:11:59,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:11:59,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:11:59,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:12:00,009 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 01:12:00,010 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2655020] [2020-10-14 01:12:00,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:12:00,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 01:12:00,013 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899781801] [2020-10-14 01:12:00,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 01:12:00,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:12:00,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 01:12:00,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 01:12:00,037 INFO L87 Difference]: Start difference. First operand 906 states. Second operand 4 states. [2020-10-14 01:12:08,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:12:08,815 INFO L93 Difference]: Finished difference Result 2672 states and 5137 transitions. [2020-10-14 01:12:08,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 01:12:08,818 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 812 [2020-10-14 01:12:08,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:12:08,876 INFO L225 Difference]: With dead ends: 2672 [2020-10-14 01:12:08,877 INFO L226 Difference]: Without dead ends: 1702 [2020-10-14 01:12:08,890 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 01:12:08,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2020-10-14 01:12:09,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 1689. [2020-10-14 01:12:09,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1689 states. [2020-10-14 01:12:09,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1689 states to 1689 states and 3005 transitions. [2020-10-14 01:12:09,058 INFO L78 Accepts]: Start accepts. Automaton has 1689 states and 3005 transitions. Word has length 812 [2020-10-14 01:12:09,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:12:09,060 INFO L479 AbstractCegarLoop]: Abstraction has 1689 states and 3005 transitions. [2020-10-14 01:12:09,060 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 01:12:09,061 INFO L276 IsEmpty]: Start isEmpty. Operand 1689 states and 3005 transitions. [2020-10-14 01:12:09,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 821 [2020-10-14 01:12:09,091 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:12:09,092 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:12:09,092 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 01:12:09,092 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:12:09,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:12:09,093 INFO L82 PathProgramCache]: Analyzing trace with hash -701903566, now seen corresponding path program 1 times [2020-10-14 01:12:09,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:12:09,094 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [632031117] [2020-10-14 01:12:09,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:12:09,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:12:09,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:12:10,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:12:14,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:12:14,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 836 [2020-10-14 01:12:14,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:12:14,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-14 01:12:14,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:12:14,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:12:14,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:12:14,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:12:14,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 01:12:14,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:12:14,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:12:14,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:12:14,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:12:14,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:12:14,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:12:14,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:12:14,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 01:12:14,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:12:14,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:12:14,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:12:14,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:12:14,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:12:14,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:12:14,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:12:14,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:12:14,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:12:14,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:12:14,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 01:12:14,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:12:14,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 01:12:14,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:12:14,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:12:14,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:12:14,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:12:14,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 01:12:14,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:12:15,468 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:12:15,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [632031117] [2020-10-14 01:12:15,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:12:15,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 01:12:15,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940132840] [2020-10-14 01:12:15,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:12:15,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:12:15,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:12:15,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:12:15,474 INFO L87 Difference]: Start difference. First operand 1689 states and 3005 transitions. Second operand 7 states. [2020-10-14 01:12:26,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:12:26,262 INFO L93 Difference]: Finished difference Result 5183 states and 9234 transitions. [2020-10-14 01:12:26,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 01:12:26,264 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 820 [2020-10-14 01:12:26,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:12:26,287 INFO L225 Difference]: With dead ends: 5183 [2020-10-14 01:12:26,288 INFO L226 Difference]: Without dead ends: 3500 [2020-10-14 01:12:26,293 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 01:12:26,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3500 states. [2020-10-14 01:12:26,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3500 to 3428. [2020-10-14 01:12:26,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3428 states. [2020-10-14 01:12:26,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3428 states to 3428 states and 5148 transitions. [2020-10-14 01:12:26,414 INFO L78 Accepts]: Start accepts. Automaton has 3428 states and 5148 transitions. Word has length 820 [2020-10-14 01:12:26,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:12:26,415 INFO L479 AbstractCegarLoop]: Abstraction has 3428 states and 5148 transitions. [2020-10-14 01:12:26,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:12:26,415 INFO L276 IsEmpty]: Start isEmpty. Operand 3428 states and 5148 transitions. [2020-10-14 01:12:26,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 826 [2020-10-14 01:12:26,431 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:12:26,432 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:12:26,432 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 01:12:26,433 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:12:26,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:12:26,433 INFO L82 PathProgramCache]: Analyzing trace with hash 1624661056, now seen corresponding path program 1 times [2020-10-14 01:12:26,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:12:26,434 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [735551657] [2020-10-14 01:12:26,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:12:26,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:12:26,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:12:27,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:12:29,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:12:31,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:12:31,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 841 [2020-10-14 01:12:31,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 01:12:31,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-14 01:12:31,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:12:31,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:12:31,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:12:31,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:12:31,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 01:12:31,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:12:31,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:12:31,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:12:31,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:12:31,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:12:31,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:12:31,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:12:31,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 01:12:31,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:12:31,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:12:31,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:12:31,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:12:31,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:12:31,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:12:31,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:12:31,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:12:31,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:12:31,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:12:31,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 01:12:31,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:12:31,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 01:12:31,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:12:31,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:12:31,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:12:31,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:12:31,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 01:12:31,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:12:32,091 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:12:32,092 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [735551657] [2020-10-14 01:12:32,092 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:12:32,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 01:12:32,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249564845] [2020-10-14 01:12:32,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:12:32,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:12:32,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:12:32,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:12:32,095 INFO L87 Difference]: Start difference. First operand 3428 states and 5148 transitions. Second operand 7 states. [2020-10-14 01:12:42,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:12:42,828 INFO L93 Difference]: Finished difference Result 10515 states and 16077 transitions. [2020-10-14 01:12:42,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 01:12:42,830 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 825 [2020-10-14 01:12:42,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:12:42,865 INFO L225 Difference]: With dead ends: 10515 [2020-10-14 01:12:42,865 INFO L226 Difference]: Without dead ends: 7093 [2020-10-14 01:12:42,875 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:12:42,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7093 states. [2020-10-14 01:12:43,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7093 to 6949. [2020-10-14 01:12:43,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6949 states. [2020-10-14 01:12:43,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6949 states to 6949 states and 9581 transitions. [2020-10-14 01:12:43,077 INFO L78 Accepts]: Start accepts. Automaton has 6949 states and 9581 transitions. Word has length 825 [2020-10-14 01:12:43,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:12:43,078 INFO L479 AbstractCegarLoop]: Abstraction has 6949 states and 9581 transitions. [2020-10-14 01:12:43,078 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:12:43,078 INFO L276 IsEmpty]: Start isEmpty. Operand 6949 states and 9581 transitions. [2020-10-14 01:12:43,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 830 [2020-10-14 01:12:43,116 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:12:43,117 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:12:43,117 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 01:12:43,117 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:12:43,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:12:43,118 INFO L82 PathProgramCache]: Analyzing trace with hash -1245942088, now seen corresponding path program 1 times [2020-10-14 01:12:43,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:12:43,118 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1913056579] [2020-10-14 01:12:43,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:12:43,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:12:43,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:12:43,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:12:48,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:12:48,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 845 [2020-10-14 01:12:48,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:12:48,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-14 01:12:48,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:12:48,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:12:48,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:12:48,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:12:48,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 01:12:48,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:12:48,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:12:48,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:12:48,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:12:48,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:12:48,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:12:48,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:12:48,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 01:12:48,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:12:48,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:12:48,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:12:48,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:12:48,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:12:48,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:12:48,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:12:48,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:12:48,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:12:48,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:12:48,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 01:12:48,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:12:48,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 01:12:48,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:12:48,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:12:48,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:12:48,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:12:48,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 01:12:48,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:12:49,159 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:12:49,163 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1913056579] [2020-10-14 01:12:49,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:12:49,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 01:12:49,164 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605533675] [2020-10-14 01:12:49,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:12:49,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:12:49,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:12:49,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:12:49,166 INFO L87 Difference]: Start difference. First operand 6949 states and 9581 transitions. Second operand 7 states. [2020-10-14 01:13:00,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:13:00,281 INFO L93 Difference]: Finished difference Result 17735 states and 25731 transitions. [2020-10-14 01:13:00,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 01:13:00,282 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 829 [2020-10-14 01:13:00,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:13:00,351 INFO L225 Difference]: With dead ends: 17735 [2020-10-14 01:13:00,351 INFO L226 Difference]: Without dead ends: 10792 [2020-10-14 01:13:00,377 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 01:13:00,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10792 states. [2020-10-14 01:13:00,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10792 to 10557. [2020-10-14 01:13:00,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10557 states. [2020-10-14 01:13:00,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10557 states to 10557 states and 13932 transitions. [2020-10-14 01:13:00,732 INFO L78 Accepts]: Start accepts. Automaton has 10557 states and 13932 transitions. Word has length 829 [2020-10-14 01:13:00,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:13:00,733 INFO L479 AbstractCegarLoop]: Abstraction has 10557 states and 13932 transitions. [2020-10-14 01:13:00,733 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:13:00,733 INFO L276 IsEmpty]: Start isEmpty. Operand 10557 states and 13932 transitions. [2020-10-14 01:13:00,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 847 [2020-10-14 01:13:00,771 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:13:00,772 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:13:00,773 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 01:13:00,773 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:13:00,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:13:00,774 INFO L82 PathProgramCache]: Analyzing trace with hash 574040861, now seen corresponding path program 1 times [2020-10-14 01:13:00,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:13:00,774 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2114068516] [2020-10-14 01:13:00,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:13:01,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:13:01,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:13:01,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:13:01,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:13:06,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:13:06,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 864 [2020-10-14 01:13:06,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 01:13:06,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5071 [2020-10-14 01:13:06,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:13:06,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:13:06,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:13:06,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-14 01:13:06,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 01:13:06,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:13:06,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:13:06,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:13:06,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:13:06,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:13:06,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:13:06,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:13:06,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 01:13:06,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:13:06,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:13:06,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:13:06,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:13:06,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:13:06,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:13:06,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:13:06,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:13:06,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:13:06,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:13:06,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 01:13:06,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:13:06,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 01:13:06,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:13:06,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:13:06,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:13:06,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:13:06,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 01:13:06,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:13:06,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 01:13:06,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:13:06,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:13:06,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:13:06,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 01:13:06,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:13:06,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 01:13:06,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:13:06,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:13:06,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:13:06,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:13:06,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 01:13:06,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:13:06,612 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 33 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 01:13:06,613 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2114068516] [2020-10-14 01:13:06,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:13:06,613 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:13:06,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630418250] [2020-10-14 01:13:06,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:13:06,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:13:06,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:13:06,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:13:06,621 INFO L87 Difference]: Start difference. First operand 10557 states and 13932 transitions. Second operand 7 states. [2020-10-14 01:13:16,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:13:16,008 INFO L93 Difference]: Finished difference Result 23358 states and 31804 transitions. [2020-10-14 01:13:16,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 01:13:16,009 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 846 [2020-10-14 01:13:16,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:13:16,067 INFO L225 Difference]: With dead ends: 23358 [2020-10-14 01:13:16,067 INFO L226 Difference]: Without dead ends: 12807 [2020-10-14 01:13:16,095 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:13:16,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12807 states. [2020-10-14 01:13:16,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12807 to 12587. [2020-10-14 01:13:16,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12587 states. [2020-10-14 01:13:16,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12587 states to 12587 states and 16842 transitions. [2020-10-14 01:13:16,434 INFO L78 Accepts]: Start accepts. Automaton has 12587 states and 16842 transitions. Word has length 846 [2020-10-14 01:13:16,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:13:16,435 INFO L479 AbstractCegarLoop]: Abstraction has 12587 states and 16842 transitions. [2020-10-14 01:13:16,436 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:13:16,436 INFO L276 IsEmpty]: Start isEmpty. Operand 12587 states and 16842 transitions. [2020-10-14 01:13:16,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 849 [2020-10-14 01:13:16,488 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:13:16,489 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:13:16,490 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 01:13:16,490 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:13:16,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:13:16,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1158357063, now seen corresponding path program 1 times [2020-10-14 01:13:16,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:13:16,491 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [626573204] [2020-10-14 01:13:16,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:13:16,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:13:16,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:13:18,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:13:20,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:13:20,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 866 [2020-10-14 01:13:20,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:13:20,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3500 [2020-10-14 01:13:20,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:13:20,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:13:20,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 01:13:20,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-14 01:13:20,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 817 [2020-10-14 01:13:20,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:13:20,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:13:20,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:13:20,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:13:20,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:13:20,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:13:20,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:13:20,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 01:13:20,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:13:20,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:13:20,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:13:20,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:13:20,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:13:20,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:13:20,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:13:20,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:13:20,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:13:20,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:13:20,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 01:13:20,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:13:20,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 01:13:20,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:13:20,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:13:20,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:13:20,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:13:20,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:13:20,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:13:20,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 01:13:20,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:13:20,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:13:20,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:13:20,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 01:13:20,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:13:20,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 01:13:20,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:13:20,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:13:20,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:13:20,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:13:20,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 01:13:20,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:13:21,063 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 31 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-14 01:13:21,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [626573204] [2020-10-14 01:13:21,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:13:21,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 01:13:21,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668817156] [2020-10-14 01:13:21,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 01:13:21,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:13:21,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 01:13:21,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 01:13:21,066 INFO L87 Difference]: Start difference. First operand 12587 states and 16842 transitions. Second operand 5 states. [2020-10-14 01:13:30,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:13:30,070 INFO L93 Difference]: Finished difference Result 28712 states and 40266 transitions. [2020-10-14 01:13:30,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 01:13:30,076 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 848 [2020-10-14 01:13:30,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:13:30,146 INFO L225 Difference]: With dead ends: 28712 [2020-10-14 01:13:30,146 INFO L226 Difference]: Without dead ends: 16131 [2020-10-14 01:13:30,179 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 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 01:13:30,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16131 states. [2020-10-14 01:13:30,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16131 to 16093. [2020-10-14 01:13:30,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16093 states. [2020-10-14 01:13:30,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16093 states to 16093 states and 22551 transitions. [2020-10-14 01:13:30,552 INFO L78 Accepts]: Start accepts. Automaton has 16093 states and 22551 transitions. Word has length 848 [2020-10-14 01:13:30,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:13:30,553 INFO L479 AbstractCegarLoop]: Abstraction has 16093 states and 22551 transitions. [2020-10-14 01:13:30,555 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 01:13:30,556 INFO L276 IsEmpty]: Start isEmpty. Operand 16093 states and 22551 transitions. [2020-10-14 01:13:30,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 901 [2020-10-14 01:13:30,612 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:13:30,613 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:13:30,614 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 01:13:30,614 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:13:30,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:13:30,614 INFO L82 PathProgramCache]: Analyzing trace with hash 1291898929, now seen corresponding path program 1 times [2020-10-14 01:13:30,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:13:30,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [65579476] [2020-10-14 01:13:30,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:13:30,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:13:30,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:13:31,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:13:32,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:13:35,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:13:35,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:13:35,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 918 [2020-10-14 01:13:35,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 01:13:35,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5296 [2020-10-14 01:13:36,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:13:36,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:13:36,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:13:36,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-14 01:13:36,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 01:13:36,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:13:36,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:13:36,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:13:36,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:13:36,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:13:36,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:13:36,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:13:36,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 01:13:36,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:13:36,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:13:36,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:13:36,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:13:36,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:13:36,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:13:36,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:13:36,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:13:36,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:13:36,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:13:36,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 01:13:36,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:13:36,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 01:13:36,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:13:36,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:13:36,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:13:36,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:13:36,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 01:13:36,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:13:36,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 01:13:36,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:13:36,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:13:36,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:13:36,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 01:13:36,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:13:36,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-14 01:13:36,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:13:36,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:13:36,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:13:36,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:13:36,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-14 01:13:36,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:13:36,744 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 105 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 01:13:36,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [65579476] [2020-10-14 01:13:36,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:13:36,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:13:36,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947845264] [2020-10-14 01:13:36,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:13:36,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:13:36,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:13:36,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:13:36,747 INFO L87 Difference]: Start difference. First operand 16093 states and 22551 transitions. Second operand 7 states. [2020-10-14 01:13:47,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:13:47,630 INFO L93 Difference]: Finished difference Result 47709 states and 69983 transitions. [2020-10-14 01:13:47,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 01:13:47,631 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 900 [2020-10-14 01:13:47,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:13:47,745 INFO L225 Difference]: With dead ends: 47709 [2020-10-14 01:13:47,745 INFO L226 Difference]: Without dead ends: 31622 [2020-10-14 01:13:47,792 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:13:47,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31622 states. [2020-10-14 01:13:48,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31622 to 30684. [2020-10-14 01:13:48,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30684 states. [2020-10-14 01:13:48,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30684 states to 30684 states and 41063 transitions. [2020-10-14 01:13:48,415 INFO L78 Accepts]: Start accepts. Automaton has 30684 states and 41063 transitions. Word has length 900 [2020-10-14 01:13:48,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:13:48,415 INFO L479 AbstractCegarLoop]: Abstraction has 30684 states and 41063 transitions. [2020-10-14 01:13:48,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:13:48,415 INFO L276 IsEmpty]: Start isEmpty. Operand 30684 states and 41063 transitions. [2020-10-14 01:13:48,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 957 [2020-10-14 01:13:48,476 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:13:48,477 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:13:48,478 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 01:13:48,478 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:13:48,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:13:48,478 INFO L82 PathProgramCache]: Analyzing trace with hash 1193033839, now seen corresponding path program 1 times [2020-10-14 01:13:48,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:13:48,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2105113237] [2020-10-14 01:13:48,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:13:48,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:13:48,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:13:49,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:13:53,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:13:53,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 974 [2020-10-14 01:13:53,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:13:53,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 01:13:53,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:13:53,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:13:53,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 01:13:53,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 156 [2020-10-14 01:13:53,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 817 [2020-10-14 01:13:53,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:13:54,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:13:54,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:13:54,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:13:54,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:13:54,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:13:54,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:13:54,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 01:13:54,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:13:54,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:13:54,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:13:54,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:13:54,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:13:54,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:13:54,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:13:54,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:13:54,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:13:54,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:13:54,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 01:13:54,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:13:54,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 01:13:54,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:13:54,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:13:54,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:13:54,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:13:54,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:13:54,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:13:54,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 01:13:54,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:13:54,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:13:54,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:13:54,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-14 01:13:54,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:13:54,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-14 01:13:54,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:13:54,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:13:54,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:13:54,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:13:54,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-14 01:13:54,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:13:55,327 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 139 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-14 01:13:55,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2105113237] [2020-10-14 01:13:55,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:13:55,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 01:13:55,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217504873] [2020-10-14 01:13:55,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 01:13:55,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:13:55,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 01:13:55,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 01:13:55,331 INFO L87 Difference]: Start difference. First operand 30684 states and 41063 transitions. Second operand 5 states. [2020-10-14 01:14:05,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:14:05,562 INFO L93 Difference]: Finished difference Result 72270 states and 100668 transitions. [2020-10-14 01:14:05,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 01:14:05,563 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 956 [2020-10-14 01:14:05,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:14:05,704 INFO L225 Difference]: With dead ends: 72270 [2020-10-14 01:14:05,704 INFO L226 Difference]: Without dead ends: 42426 [2020-10-14 01:14:05,774 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 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 01:14:05,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42426 states. [2020-10-14 01:14:06,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42426 to 42419. [2020-10-14 01:14:06,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42419 states. [2020-10-14 01:14:06,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42419 states to 42419 states and 55154 transitions. [2020-10-14 01:14:06,558 INFO L78 Accepts]: Start accepts. Automaton has 42419 states and 55154 transitions. Word has length 956 [2020-10-14 01:14:06,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:14:06,560 INFO L479 AbstractCegarLoop]: Abstraction has 42419 states and 55154 transitions. [2020-10-14 01:14:06,560 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 01:14:06,560 INFO L276 IsEmpty]: Start isEmpty. Operand 42419 states and 55154 transitions. [2020-10-14 01:14:06,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1027 [2020-10-14 01:14:06,630 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:14:06,631 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:14:06,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 01:14:06,632 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:14:06,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:14:06,632 INFO L82 PathProgramCache]: Analyzing trace with hash -1753733886, now seen corresponding path program 1 times [2020-10-14 01:14:06,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:14:06,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1956030137] [2020-10-14 01:14:06,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:14:06,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:14:06,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:14:06,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:14:06,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:14:11,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:14:11,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1046 [2020-10-14 01:14:11,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 01:14:11,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-14 01:14:11,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:14:11,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:14:11,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:14:11,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-14 01:14:11,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 01:14:11,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:14:11,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:14:11,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:14:11,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:14:11,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:14:11,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:14:11,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:14:11,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 01:14:11,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:14:11,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:14:11,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:14:11,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:14:11,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:14:11,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:14:11,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:14:11,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:14:11,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:14:11,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:14:11,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 01:14:11,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:14:11,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 01:14:11,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:14:11,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:14:11,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:14:11,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:14:11,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:14:11,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:14:11,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 01:14:12,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:14:12,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:14:12,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:14:12,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 01:14:12,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:14:12,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 01:14:12,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:14:12,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:14:12,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:14:12,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:14:12,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 01:14:12,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:14:12,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-14 01:14:12,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:14:12,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:14:12,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:14:12,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 01:14:12,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:14:12,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-14 01:14:12,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:14:12,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:14:12,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:14:12,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:14:12,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-14 01:14:12,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:14:12,636 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 296 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 01:14:12,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1956030137] [2020-10-14 01:14:12,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:14:12,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:14:12,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650027107] [2020-10-14 01:14:12,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:14:12,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:14:12,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:14:12,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:14:12,640 INFO L87 Difference]: Start difference. First operand 42419 states and 55154 transitions. Second operand 7 states. [2020-10-14 01:14:24,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:14:24,746 INFO L93 Difference]: Finished difference Result 84277 states and 110976 transitions. [2020-10-14 01:14:24,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 01:14:24,747 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1026 [2020-10-14 01:14:24,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:14:24,872 INFO L225 Difference]: With dead ends: 84277 [2020-10-14 01:14:24,872 INFO L226 Difference]: Without dead ends: 42698 [2020-10-14 01:14:24,946 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:14:24,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42698 states. [2020-10-14 01:14:27,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42698 to 42528. [2020-10-14 01:14:27,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42528 states. [2020-10-14 01:14:27,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42528 states to 42528 states and 50444 transitions. [2020-10-14 01:14:27,169 INFO L78 Accepts]: Start accepts. Automaton has 42528 states and 50444 transitions. Word has length 1026 [2020-10-14 01:14:27,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:14:27,169 INFO L479 AbstractCegarLoop]: Abstraction has 42528 states and 50444 transitions. [2020-10-14 01:14:27,169 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:14:27,169 INFO L276 IsEmpty]: Start isEmpty. Operand 42528 states and 50444 transitions. [2020-10-14 01:14:27,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1079 [2020-10-14 01:14:27,229 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:14:27,230 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:14:27,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 01:14:27,230 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:14:27,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:14:27,231 INFO L82 PathProgramCache]: Analyzing trace with hash -1909682790, now seen corresponding path program 1 times [2020-10-14 01:14:27,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:14:27,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2002700344] [2020-10-14 01:14:27,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:14:27,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:14:27,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:14:27,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:14:28,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:14:32,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:14:32,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1098 [2020-10-14 01:14:32,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 01:14:32,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-14 01:14:32,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:14:32,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:14:32,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:14:32,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 156 [2020-10-14 01:14:32,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 01:14:32,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:14:32,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:14:32,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:14:32,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:14:32,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:14:32,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:14:32,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:14:32,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 01:14:32,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:14:32,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:14:32,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:14:32,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:14:32,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:14:32,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:14:32,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:14:32,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:14:32,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:14:32,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:14:32,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 01:14:32,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:14:32,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 01:14:32,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:14:32,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:14:32,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:14:32,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:14:32,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:14:32,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:14:32,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 01:14:32,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:14:32,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:14:32,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:14:32,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-14 01:14:32,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:14:32,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-14 01:14:32,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:14:32,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:14:32,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:14:32,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:14:32,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-14 01:14:32,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:14:32,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-14 01:14:32,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:14:32,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:14:32,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:14:32,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 01:14:32,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:14:32,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-14 01:14:32,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:14:32,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:14:32,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:14:32,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:14:32,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-14 01:14:32,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:14:33,619 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 397 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 01:14:33,620 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2002700344] [2020-10-14 01:14:33,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:14:33,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:14:33,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148482752] [2020-10-14 01:14:33,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:14:33,622 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:14:33,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:14:33,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:14:33,622 INFO L87 Difference]: Start difference. First operand 42528 states and 50444 transitions. Second operand 7 states. [2020-10-14 01:14:53,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:14:53,222 INFO L93 Difference]: Finished difference Result 107916 states and 132444 transitions. [2020-10-14 01:14:53,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 01:14:53,223 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1078 [2020-10-14 01:14:53,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:14:53,445 INFO L225 Difference]: With dead ends: 107916 [2020-10-14 01:14:53,445 INFO L226 Difference]: Without dead ends: 66228 [2020-10-14 01:14:53,511 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:14:53,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66228 states. [2020-10-14 01:14:54,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66228 to 65890. [2020-10-14 01:14:54,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65890 states. [2020-10-14 01:14:54,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65890 states to 65890 states and 77274 transitions. [2020-10-14 01:14:54,836 INFO L78 Accepts]: Start accepts. Automaton has 65890 states and 77274 transitions. Word has length 1078 [2020-10-14 01:14:54,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:14:54,837 INFO L479 AbstractCegarLoop]: Abstraction has 65890 states and 77274 transitions. [2020-10-14 01:14:54,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:14:54,837 INFO L276 IsEmpty]: Start isEmpty. Operand 65890 states and 77274 transitions. [2020-10-14 01:14:54,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1143 [2020-10-14 01:14:54,943 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:14:54,944 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:14:54,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 01:14:54,945 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:14:54,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:14:54,946 INFO L82 PathProgramCache]: Analyzing trace with hash -2001382825, now seen corresponding path program 1 times [2020-10-14 01:14:54,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:14:54,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [329373066] [2020-10-14 01:14:54,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:14:55,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:14:55,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:14:55,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:14:55,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:14:55,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:15:00,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:15:00,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1164 [2020-10-14 01:15:00,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 01:15:00,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-14 01:15:00,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:15:00,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:15:00,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:15:00,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 137 [2020-10-14 01:15:00,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 210 [2020-10-14 01:15:00,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:15:00,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:15:00,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:15:00,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:15:00,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:15:00,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:15:00,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:15:00,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 01:15:00,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:15:00,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:15:00,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:15:00,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:15:00,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:15:00,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:15:00,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:15:00,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:15:00,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:15:00,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:15:00,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 01:15:00,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:15:00,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 01:15:00,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:15:00,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:15:00,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:15:00,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:15:00,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:15:00,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:15:00,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 01:15:00,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:15:00,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:15:00,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:15:00,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 01:15:00,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:15:00,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 01:15:00,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:15:00,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:15:00,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:15:00,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:15:00,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:15:00,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:15:00,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-14 01:15:00,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:15:00,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:15:00,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:15:00,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 01:15:00,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:15:00,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 01:15:00,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:15:00,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:15:00,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:15:00,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:15:00,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 01:15:00,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:15:00,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-14 01:15:00,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:15:00,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:15:00,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:15:00,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-10-14 01:15:00,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:15:00,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 421 [2020-10-14 01:15:00,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:15:00,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:15:00,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:15:00,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:15:00,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 208 [2020-10-14 01:15:00,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:15:01,885 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 442 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-14 01:15:01,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [329373066] [2020-10-14 01:15:01,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:15:01,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:15:01,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091265917] [2020-10-14 01:15:01,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:15:01,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:15:01,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:15:01,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:15:01,887 INFO L87 Difference]: Start difference. First operand 65890 states and 77274 transitions. Second operand 7 states. [2020-10-14 01:15:14,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:15:14,758 INFO L93 Difference]: Finished difference Result 131942 states and 154946 transitions. [2020-10-14 01:15:14,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 01:15:14,759 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1142 [2020-10-14 01:15:14,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:15:14,943 INFO L225 Difference]: With dead ends: 131942 [2020-10-14 01:15:14,943 INFO L226 Difference]: Without dead ends: 66892 [2020-10-14 01:15:15,030 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 01:15:15,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66892 states. [2020-10-14 01:15:15,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66892 to 66793. [2020-10-14 01:15:15,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66793 states. [2020-10-14 01:15:15,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66793 states to 66793 states and 75165 transitions. [2020-10-14 01:15:15,990 INFO L78 Accepts]: Start accepts. Automaton has 66793 states and 75165 transitions. Word has length 1142 [2020-10-14 01:15:15,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:15:15,990 INFO L479 AbstractCegarLoop]: Abstraction has 66793 states and 75165 transitions. [2020-10-14 01:15:15,990 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:15:15,990 INFO L276 IsEmpty]: Start isEmpty. Operand 66793 states and 75165 transitions. [2020-10-14 01:15:16,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1232 [2020-10-14 01:15:16,052 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:15:16,053 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:15:16,053 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 01:15:16,054 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:15:16,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:15:16,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1887598877, now seen corresponding path program 1 times [2020-10-14 01:15:16,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:15:16,055 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1494616029] [2020-10-14 01:15:16,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:15:16,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:15:16,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:15:16,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:15:16,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:15:17,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:15:18,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:15:19,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking...