/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/Problem13_label57.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 03:12:37,162 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 03:12:37,165 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 03:12:37,213 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 03:12:37,213 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 03:12:37,226 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 03:12:37,228 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 03:12:37,230 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 03:12:37,234 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 03:12:37,235 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 03:12:37,237 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 03:12:37,240 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 03:12:37,240 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 03:12:37,244 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 03:12:37,248 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 03:12:37,251 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 03:12:37,253 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 03:12:37,254 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 03:12:37,257 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 03:12:37,264 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 03:12:37,266 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 03:12:37,269 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 03:12:37,270 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 03:12:37,271 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 03:12:37,277 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 03:12:37,277 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 03:12:37,277 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 03:12:37,280 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 03:12:37,281 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 03:12:37,282 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 03:12:37,282 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 03:12:37,283 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 03:12:37,284 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 03:12:37,284 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 03:12:37,286 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 03:12:37,286 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 03:12:37,287 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 03:12:37,287 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 03:12:37,287 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 03:12:37,288 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 03:12:37,290 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 03:12:37,291 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 03:12:37,336 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 03:12:37,337 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 03:12:37,340 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 03:12:37,340 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 03:12:37,340 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 03:12:37,340 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 03:12:37,341 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 03:12:37,341 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 03:12:37,341 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 03:12:37,342 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 03:12:37,343 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 03:12:37,343 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 03:12:37,343 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 03:12:37,344 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 03:12:37,344 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 03:12:37,344 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 03:12:37,344 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 03:12:37,345 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 03:12:37,345 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 03:12:37,345 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 03:12:37,345 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 03:12:37,345 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 03:12:37,346 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 03:12:37,346 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 03:12:37,346 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 03:12:37,346 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 03:12:37,346 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 03:12:37,347 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 03:12:37,347 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 03:12:37,347 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 03:12:37,693 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 03:12:37,707 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 03:12:37,711 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 03:12:37,713 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 03:12:37,713 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 03:12:37,714 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label57.c [2020-10-14 03:12:37,783 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8b92b8e9e/2fd44a6b722f4e47b4d0114004034084/FLAG87539c943 [2020-10-14 03:12:38,643 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 03:12:38,644 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label57.c [2020-10-14 03:12:38,688 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8b92b8e9e/2fd44a6b722f4e47b4d0114004034084/FLAG87539c943 [2020-10-14 03:12:39,124 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8b92b8e9e/2fd44a6b722f4e47b4d0114004034084 [2020-10-14 03:12:39,135 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 03:12:39,137 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 03:12:39,138 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 03:12:39,138 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 03:12:39,142 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 03:12:39,144 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:12:39" (1/1) ... [2020-10-14 03:12:39,149 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20d022c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:12:39, skipping insertion in model container [2020-10-14 03:12:39,149 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:12:39" (1/1) ... [2020-10-14 03:12:39,159 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 03:12:39,332 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 03:12:40,877 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:12:40,886 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 03:12:41,644 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:12:41,685 INFO L208 MainTranslator]: Completed translation [2020-10-14 03:12:41,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:12:41 WrapperNode [2020-10-14 03:12:41,688 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 03:12:41,689 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 03:12:41,689 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 03:12:41,689 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 03:12:41,709 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:12:41" (1/1) ... [2020-10-14 03:12:41,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:12:41" (1/1) ... [2020-10-14 03:12:41,801 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:12:41" (1/1) ... [2020-10-14 03:12:41,802 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:12:41" (1/1) ... [2020-10-14 03:12:41,960 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:12:41" (1/1) ... [2020-10-14 03:12:41,998 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:12:41" (1/1) ... [2020-10-14 03:12:42,036 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:12:41" (1/1) ... [2020-10-14 03:12:42,075 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 03:12:42,076 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 03:12:42,076 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 03:12:42,077 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 03:12:42,079 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:12:41" (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 03:12:42,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 03:12:42,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 03:12:42,181 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 03:12:42,181 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 03:12:42,181 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 03:12:42,181 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 03:12:42,182 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 03:12:42,184 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 03:12:42,185 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 03:12:42,185 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 03:12:42,185 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 03:12:42,185 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 03:12:42,185 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 03:12:42,185 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 03:12:42,186 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 03:12:42,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 03:12:42,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 03:12:54,510 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 03:12:54,512 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 03:12:54,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:12:54 BoogieIcfgContainer [2020-10-14 03:12:54,539 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 03:12:54,541 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 03:12:54,541 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 03:12:54,546 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 03:12:54,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 03:12:39" (1/3) ... [2020-10-14 03:12:54,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c054ba2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:12:54, skipping insertion in model container [2020-10-14 03:12:54,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:12:41" (2/3) ... [2020-10-14 03:12:54,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c054ba2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:12:54, skipping insertion in model container [2020-10-14 03:12:54,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:12:54" (3/3) ... [2020-10-14 03:12:54,555 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label57.c [2020-10-14 03:12:54,568 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 03:12:54,583 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 03:12:54,601 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 03:12:54,643 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 03:12:54,644 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 03:12:54,644 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 03:12:54,644 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 03:12:54,644 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 03:12:54,644 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 03:12:54,644 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 03:12:54,645 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 03:12:54,700 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-14 03:12:54,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-14 03:12:54,718 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:12:54,720 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:12:54,720 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:12:54,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:12:54,727 INFO L82 PathProgramCache]: Analyzing trace with hash 1658720712, now seen corresponding path program 1 times [2020-10-14 03:12:54,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:12:54,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2066684474] [2020-10-14 03:12:54,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:12:54,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:12:55,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:12:55,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:12:55,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 03:12:55,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:12:55,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 595 [2020-10-14 03:12:55,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:12:55,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:12:55,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:12:55,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:12:55,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 03:12:55,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 03:12:55,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:12:55,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:12:55,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:12:55,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:12:55,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:12:55,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:12:55,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 03:12:55,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:12:55,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:12:55,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:12:55,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:12:55,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:12:55,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:12:55,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:12:55,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2066684474] [2020-10-14 03:12:55,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:12:55,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 03:12:55,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293411919] [2020-10-14 03:12:55,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 03:12:55,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:12:55,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 03:12:55,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 03:12:55,837 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 4 states. [2020-10-14 03:13:14,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:13:14,918 INFO L93 Difference]: Finished difference Result 3230 states and 5909 transitions. [2020-10-14 03:13:14,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:13:14,920 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-10-14 03:13:14,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:13:14,958 INFO L225 Difference]: With dead ends: 3230 [2020-10-14 03:13:14,958 INFO L226 Difference]: Without dead ends: 2026 [2020-10-14 03:13:14,969 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:13:14,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2026 states. [2020-10-14 03:13:15,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2026 to 2009. [2020-10-14 03:13:15,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2009 states. [2020-10-14 03:13:15,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2009 states to 2009 states and 3291 transitions. [2020-10-14 03:13:15,153 INFO L78 Accepts]: Start accepts. Automaton has 2009 states and 3291 transitions. Word has length 67 [2020-10-14 03:13:15,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:13:15,154 INFO L479 AbstractCegarLoop]: Abstraction has 2009 states and 3291 transitions. [2020-10-14 03:13:15,154 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 03:13:15,154 INFO L276 IsEmpty]: Start isEmpty. Operand 2009 states and 3291 transitions. [2020-10-14 03:13:15,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-14 03:13:15,162 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:13:15,162 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:13:15,163 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 03:13:15,163 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:13:15,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:13:15,163 INFO L82 PathProgramCache]: Analyzing trace with hash -279302963, now seen corresponding path program 1 times [2020-10-14 03:13:15,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:13:15,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [957618640] [2020-10-14 03:13:15,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:13:15,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:13:15,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:13:15,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:13:16,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:13:18,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:13:18,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-14 03:13:18,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:13:18,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3086 [2020-10-14 03:13:18,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:13:18,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:13:18,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:13:18,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 03:13:18,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 03:13:18,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-14 03:13:18,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:13:18,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:13:18,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:13:18,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:13:18,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:13:18,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:13:18,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 03:13:18,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:13:18,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:13:18,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:13:18,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:13:18,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:13:18,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:13:18,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:13:18,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:13:18,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:13:18,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:13:18,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 03:13:18,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:13:18,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-14 03:13:18,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:13:18,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:13:18,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:13:18,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:13:18,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 03:13:18,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:13:18,990 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:13:18,990 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [957618640] [2020-10-14 03:13:18,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:13:18,991 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:13:18,991 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361485216] [2020-10-14 03:13:18,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:13:18,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:13:18,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:13:18,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:13:18,995 INFO L87 Difference]: Start difference. First operand 2009 states and 3291 transitions. Second operand 5 states. [2020-10-14 03:13:34,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:13:34,537 INFO L93 Difference]: Finished difference Result 5697 states and 9455 transitions. [2020-10-14 03:13:34,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:13:34,538 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-10-14 03:13:34,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:13:34,562 INFO L225 Difference]: With dead ends: 5697 [2020-10-14 03:13:34,562 INFO L226 Difference]: Without dead ends: 3694 [2020-10-14 03:13:34,569 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:13:34,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3694 states. [2020-10-14 03:13:34,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3694 to 3680. [2020-10-14 03:13:34,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3680 states. [2020-10-14 03:13:34,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3680 states to 3680 states and 5505 transitions. [2020-10-14 03:13:34,693 INFO L78 Accepts]: Start accepts. Automaton has 3680 states and 5505 transitions. Word has length 142 [2020-10-14 03:13:34,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:13:34,694 INFO L479 AbstractCegarLoop]: Abstraction has 3680 states and 5505 transitions. [2020-10-14 03:13:34,694 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:13:34,694 INFO L276 IsEmpty]: Start isEmpty. Operand 3680 states and 5505 transitions. [2020-10-14 03:13:34,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-14 03:13:34,699 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:13:34,700 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:13:34,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 03:13:34,700 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:13:34,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:13:34,701 INFO L82 PathProgramCache]: Analyzing trace with hash -1217580695, now seen corresponding path program 1 times [2020-10-14 03:13:34,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:13:34,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1406130402] [2020-10-14 03:13:34,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:13:34,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:13:34,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:13:35,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:13:36,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:13:36,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-14 03:13:36,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:13:36,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1359 [2020-10-14 03:13:36,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:13:36,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:13:36,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:13:36,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-14 03:13:36,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 03:13:36,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:13:36,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:13:36,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:13:36,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:13:36,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:13:36,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:13:36,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:13:36,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:13:36,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:13:36,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:13:36,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:13:36,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:13:36,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:13:36,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:13:36,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:13:36,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:13:36,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:13:36,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:13:36,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 03:13:36,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:13:36,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-14 03:13:36,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:13:36,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:13:36,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:13:36,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:13:36,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 03:13:36,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:13:36,431 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:13:36,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1406130402] [2020-10-14 03:13:36,432 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:13:36,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:13:36,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645774537] [2020-10-14 03:13:36,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:13:36,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:13:36,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:13:36,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:13:36,437 INFO L87 Difference]: Start difference. First operand 3680 states and 5505 transitions. Second operand 5 states. [2020-10-14 03:13:54,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:13:54,010 INFO L93 Difference]: Finished difference Result 10624 states and 16166 transitions. [2020-10-14 03:13:54,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:13:54,012 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-10-14 03:13:54,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:13:54,059 INFO L225 Difference]: With dead ends: 10624 [2020-10-14 03:13:54,059 INFO L226 Difference]: Without dead ends: 6950 [2020-10-14 03:13:54,073 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 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 03:13:54,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6950 states. [2020-10-14 03:13:54,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6950 to 6943. [2020-10-14 03:13:54,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6943 states. [2020-10-14 03:13:54,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6943 states to 6943 states and 9801 transitions. [2020-10-14 03:13:54,321 INFO L78 Accepts]: Start accepts. Automaton has 6943 states and 9801 transitions. Word has length 156 [2020-10-14 03:13:54,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:13:54,328 INFO L479 AbstractCegarLoop]: Abstraction has 6943 states and 9801 transitions. [2020-10-14 03:13:54,329 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:13:54,329 INFO L276 IsEmpty]: Start isEmpty. Operand 6943 states and 9801 transitions. [2020-10-14 03:13:54,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-10-14 03:13:54,342 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:13:54,342 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:13:54,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 03:13:54,343 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:13:54,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:13:54,343 INFO L82 PathProgramCache]: Analyzing trace with hash -771860084, now seen corresponding path program 1 times [2020-10-14 03:13:54,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:13:54,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1185386570] [2020-10-14 03:13:54,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:13:54,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:13:54,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:13:54,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:13:54,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:13:56,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:13:59,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:13:59,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 247 [2020-10-14 03:13:59,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:13:59,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 03:13:59,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:13:59,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:13:59,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:13:59,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 03:13:59,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 03:13:59,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:13:59,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:13:59,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:13:59,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:13:59,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:13:59,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:13:59,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:13:59,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:13:59,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:13:59,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:13:59,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:13:59,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:13:59,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:13:59,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:13:59,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:13:59,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:13:59,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:13:59,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:13:59,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 03:13:59,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:13:59,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-14 03:13:59,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:13:59,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:13:59,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:13:59,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:13:59,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 03:13:59,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:13:59,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 03:13:59,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:13:59,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:13:59,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:13:59,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 03:13:59,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:13:59,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-14 03:13:59,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:13:59,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:13:59,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:13:59,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:13:59,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-14 03:13:59,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:14:00,302 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 192 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:14:00,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1185386570] [2020-10-14 03:14:00,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:14:00,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:14:00,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123447022] [2020-10-14 03:14:00,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:14:00,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:14:00,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:14:00,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:14:00,305 INFO L87 Difference]: Start difference. First operand 6943 states and 9801 transitions. Second operand 7 states. [2020-10-14 03:14:25,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:14:25,251 INFO L93 Difference]: Finished difference Result 17308 states and 25484 transitions. [2020-10-14 03:14:25,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 03:14:25,253 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 235 [2020-10-14 03:14:25,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:14:25,316 INFO L225 Difference]: With dead ends: 17308 [2020-10-14 03:14:25,316 INFO L226 Difference]: Without dead ends: 10371 [2020-10-14 03:14:25,340 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 03:14:25,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10371 states. [2020-10-14 03:14:25,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10371 to 10280. [2020-10-14 03:14:25,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10280 states. [2020-10-14 03:14:25,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10280 states to 10280 states and 14202 transitions. [2020-10-14 03:14:25,654 INFO L78 Accepts]: Start accepts. Automaton has 10280 states and 14202 transitions. Word has length 235 [2020-10-14 03:14:25,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:14:25,655 INFO L479 AbstractCegarLoop]: Abstraction has 10280 states and 14202 transitions. [2020-10-14 03:14:25,655 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:14:25,655 INFO L276 IsEmpty]: Start isEmpty. Operand 10280 states and 14202 transitions. [2020-10-14 03:14:25,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-10-14 03:14:25,662 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:14:25,663 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 03:14:25,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 03:14:25,663 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:14:25,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:14:25,664 INFO L82 PathProgramCache]: Analyzing trace with hash 1296490868, now seen corresponding path program 1 times [2020-10-14 03:14:25,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:14:25,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1201386899] [2020-10-14 03:14:25,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:14:25,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:14:25,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:14:25,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:14:25,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:14:26,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:14:27,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:14:28,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:14:30,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:14:30,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-14 03:14:30,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 03:14:30,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 03:14:30,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:14:30,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:14:30,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:14:30,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 182 [2020-10-14 03:14:30,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:14:30,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:14:30,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:14:30,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:14:30,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:14:30,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:14:30,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:14:30,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:14:30,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:14:30,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:14:30,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:14:30,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:14:30,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:14:30,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:14:30,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:14:30,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:14:30,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:14:30,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:14:30,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:14:30,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 03:14:30,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:14:30,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 03:14:30,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:14:30,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:14:30,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:14:30,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:14:30,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:14:30,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:14:30,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 03:14:30,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:14:30,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:14:31,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:14:31,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-14 03:14:31,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:14:31,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-14 03:14:31,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:14:31,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:14:31,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:14:31,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-14 03:14:31,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:14:31,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:14:31,228 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-14 03:14:31,228 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1201386899] [2020-10-14 03:14:31,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:14:31,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 03:14:31,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772619821] [2020-10-14 03:14:31,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:14:31,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:14:31,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:14:31,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:14:31,231 INFO L87 Difference]: Start difference. First operand 10280 states and 14202 transitions. Second operand 5 states. [2020-10-14 03:14:59,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:14:59,219 INFO L93 Difference]: Finished difference Result 30507 states and 43555 transitions. [2020-10-14 03:14:59,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:14:59,222 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 239 [2020-10-14 03:14:59,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:14:59,312 INFO L225 Difference]: With dead ends: 30507 [2020-10-14 03:14:59,313 INFO L226 Difference]: Without dead ends: 20233 [2020-10-14 03:14:59,342 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:14:59,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20233 states. [2020-10-14 03:14:59,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20233 to 20165. [2020-10-14 03:14:59,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20165 states. [2020-10-14 03:15:01,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20165 states to 20165 states and 27823 transitions. [2020-10-14 03:15:01,029 INFO L78 Accepts]: Start accepts. Automaton has 20165 states and 27823 transitions. Word has length 239 [2020-10-14 03:15:01,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:15:01,030 INFO L479 AbstractCegarLoop]: Abstraction has 20165 states and 27823 transitions. [2020-10-14 03:15:01,030 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:15:01,031 INFO L276 IsEmpty]: Start isEmpty. Operand 20165 states and 27823 transitions. [2020-10-14 03:15:01,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-10-14 03:15:01,039 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:15:01,039 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 03:15:01,040 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 03:15:01,040 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:15:01,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:15:01,041 INFO L82 PathProgramCache]: Analyzing trace with hash 564523442, now seen corresponding path program 1 times [2020-10-14 03:15:01,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:15:01,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1392390063] [2020-10-14 03:15:01,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:15:01,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:15:01,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:15:01,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:15:01,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:15:01,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:15:05,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:15:05,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:15:05,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:15:06,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:15:06,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-14 03:15:06,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 03:15:06,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 03:15:06,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:15:06,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:15:06,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:15:06,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-14 03:15:06,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 03:15:06,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:15:06,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:15:06,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:15:06,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:15:06,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:15:06,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:15:06,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:15:06,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:15:06,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:15:06,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:15:06,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:15:06,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:15:06,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:15:06,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:15:06,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:15:06,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:15:06,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:15:06,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:15:06,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 03:15:06,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:15:06,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-14 03:15:06,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:15:06,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:15:06,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:15:06,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:15:06,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-14 03:15:06,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:15:06,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 03:15:06,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:15:06,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:15:06,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:15:06,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-14 03:15:06,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:15:06,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-14 03:15:06,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:15:06,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:15:06,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:15:06,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:15:06,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 03:15:06,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:15:06,668 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 197 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:15:06,668 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1392390063] [2020-10-14 03:15:06,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:15:06,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:15:06,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284701759] [2020-10-14 03:15:06,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:15:06,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:15:06,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:15:06,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:15:06,671 INFO L87 Difference]: Start difference. First operand 20165 states and 27823 transitions. Second operand 7 states. [2020-10-14 03:15:46,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:15:46,368 INFO L93 Difference]: Finished difference Result 69149 states and 102776 transitions. [2020-10-14 03:15:46,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:15:46,371 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 239 [2020-10-14 03:15:46,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:15:46,562 INFO L225 Difference]: With dead ends: 69149 [2020-10-14 03:15:46,562 INFO L226 Difference]: Without dead ends: 48990 [2020-10-14 03:15:46,637 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:15:46,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48990 states. [2020-10-14 03:15:47,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48990 to 48770. [2020-10-14 03:15:47,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48770 states. [2020-10-14 03:15:47,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48770 states to 48770 states and 63704 transitions. [2020-10-14 03:15:47,810 INFO L78 Accepts]: Start accepts. Automaton has 48770 states and 63704 transitions. Word has length 239 [2020-10-14 03:15:47,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:15:47,811 INFO L479 AbstractCegarLoop]: Abstraction has 48770 states and 63704 transitions. [2020-10-14 03:15:47,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:15:47,811 INFO L276 IsEmpty]: Start isEmpty. Operand 48770 states and 63704 transitions. [2020-10-14 03:15:47,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-10-14 03:15:47,826 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:15:47,826 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 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 03:15:47,826 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 03:15:47,826 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:15:47,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:15:47,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1566138102, now seen corresponding path program 1 times [2020-10-14 03:15:47,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:15:47,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [147248231] [2020-10-14 03:15:47,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:15:47,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:15:47,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:15:47,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:15:48,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:15:48,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:15:49,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:15:50,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:15:52,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:15:52,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-10-14 03:15:52,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 03:15:52,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 03:15:52,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:15:52,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:15:52,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:15:52,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-14 03:15:52,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 03:15:52,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:15:52,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:15:52,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:15:52,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:15:52,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:15:52,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:15:52,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:15:52,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:15:52,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:15:52,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:15:52,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:15:52,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:15:52,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:15:52,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:15:53,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:15:53,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:15:53,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:15:53,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:15:53,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 03:15:53,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:15:53,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-14 03:15:53,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:15:53,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:15:53,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:15:53,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:15:53,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 03:15:53,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:15:53,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-14 03:15:53,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:15:53,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:15:53,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:15:53,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-14 03:15:53,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:15:53,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-14 03:15:53,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:15:53,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:15:53,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:15:53,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:15:53,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 03:15:53,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:15:53,366 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 197 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:15:53,367 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [147248231] [2020-10-14 03:15:53,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:15:53,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:15:53,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768071605] [2020-10-14 03:15:53,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:15:53,369 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:15:53,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:15:53,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:15:53,369 INFO L87 Difference]: Start difference. First operand 48770 states and 63704 transitions. Second operand 7 states. [2020-10-14 03:16:17,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:16:17,199 INFO L93 Difference]: Finished difference Result 108940 states and 154068 transitions. [2020-10-14 03:16:17,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:16:17,201 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 242 [2020-10-14 03:16:17,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:16:17,487 INFO L225 Difference]: With dead ends: 108940 [2020-10-14 03:16:17,487 INFO L226 Difference]: Without dead ends: 60176 [2020-10-14 03:16:17,615 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 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 03:16:17,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60176 states. [2020-10-14 03:16:20,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60176 to 59906. [2020-10-14 03:16:20,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59906 states. [2020-10-14 03:16:20,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59906 states to 59906 states and 80388 transitions. [2020-10-14 03:16:20,686 INFO L78 Accepts]: Start accepts. Automaton has 59906 states and 80388 transitions. Word has length 242 [2020-10-14 03:16:20,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:16:20,687 INFO L479 AbstractCegarLoop]: Abstraction has 59906 states and 80388 transitions. [2020-10-14 03:16:20,687 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:16:20,687 INFO L276 IsEmpty]: Start isEmpty. Operand 59906 states and 80388 transitions. [2020-10-14 03:16:20,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-14 03:16:20,696 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:16:20,697 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:16:20,697 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 03:16:20,697 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:16:20,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:16:20,698 INFO L82 PathProgramCache]: Analyzing trace with hash -1177763076, now seen corresponding path program 1 times [2020-10-14 03:16:20,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:16:20,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [536485403] [2020-10-14 03:16:20,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:16:20,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:16:20,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:16:21,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking...