/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 SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:39:21,205 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:39:21,211 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:39:21,255 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:39:21,256 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:39:21,267 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:39:21,270 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:39:21,274 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:39:21,277 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:39:21,278 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:39:21,279 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:39:21,280 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:39:21,281 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:39:21,282 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:39:21,283 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:39:21,284 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:39:21,285 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:39:21,286 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:39:21,288 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:39:21,290 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:39:21,291 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:39:21,293 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:39:21,294 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:39:21,295 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:39:21,298 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:39:21,298 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:39:21,298 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:39:21,299 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:39:21,300 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:39:21,301 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:39:21,301 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:39:21,302 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:39:21,303 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:39:21,304 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:39:21,305 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:39:21,305 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:39:21,306 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:39:21,306 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:39:21,307 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:39:21,308 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:39:21,309 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:39:21,310 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 [2020-09-25 13:39:21,337 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:39:21,337 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:39:21,338 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:39:21,338 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:39:21,339 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:39:21,339 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:39:21,339 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:39:21,339 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:39:21,339 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:39:21,340 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:39:21,340 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:39:21,340 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:39:21,340 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:39:21,340 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:39:21,341 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:39:21,341 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:39:21,341 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:39:21,341 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:39:21,342 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:39:21,342 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:39:21,342 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:39:21,342 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:39:21,342 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:39:21,343 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:39:21,343 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:39:21,343 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:39:21,343 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:39:21,343 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:39:21,344 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:39:21,344 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 -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-09-25 13:39:21,835 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:39:21,863 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:39:21,868 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:39:21,871 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:39:21,872 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:39:21,874 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-09-25 13:39:21,968 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fce08b03f/4582a68e08c24a3586fe96e033da1abb/FLAGde91591dd [2020-09-25 13:39:22,560 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:39:22,561 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-09-25 13:39:22,571 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fce08b03f/4582a68e08c24a3586fe96e033da1abb/FLAGde91591dd [2020-09-25 13:39:22,872 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fce08b03f/4582a68e08c24a3586fe96e033da1abb [2020-09-25 13:39:22,886 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:39:22,893 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:39:22,894 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:39:22,895 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:39:22,899 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:39:22,900 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:39:22" (1/1) ... [2020-09-25 13:39:22,905 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76049601 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:39:22, skipping insertion in model container [2020-09-25 13:39:22,906 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:39:22" (1/1) ... [2020-09-25 13:39:22,915 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:39:22,945 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:39:23,209 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:39:23,220 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:39:23,346 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:39:23,377 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:39:23,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:39:23 WrapperNode [2020-09-25 13:39:23,377 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:39:23,378 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:39:23,379 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:39:23,379 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:39:23,392 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:39:23" (1/1) ... [2020-09-25 13:39:23,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:39:23" (1/1) ... [2020-09-25 13:39:23,408 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:39:23" (1/1) ... [2020-09-25 13:39:23,409 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:39:23" (1/1) ... [2020-09-25 13:39:23,422 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:39:23" (1/1) ... [2020-09-25 13:39:23,430 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:39:23" (1/1) ... [2020-09-25 13:39:23,433 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:39:23" (1/1) ... [2020-09-25 13:39:23,438 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:39:23,439 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:39:23,439 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:39:23,439 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:39:23,442 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:39:23" (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 [2020-09-25 13:39:23,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:39:23,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:39:23,529 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 13:39:23,529 INFO L138 BoogieDeclarations]: Found implementation of procedure r_strncpy [2020-09-25 13:39:23,529 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_expression_list [2020-09-25 13:39:23,529 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:39:23,529 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:39:23,530 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 13:39:23,530 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2020-09-25 13:39:23,530 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2020-09-25 13:39:23,530 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2020-09-25 13:39:23,530 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2020-09-25 13:39:23,531 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy_ptr [2020-09-25 13:39:23,531 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2020-09-25 13:39:23,531 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2020-09-25 13:39:23,531 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2020-09-25 13:39:23,531 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2020-09-25 13:39:23,531 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2020-09-25 13:39:23,532 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-09-25 13:39:23,532 INFO L130 BoogieDeclarations]: Found specification of procedure isascii [2020-09-25 13:39:23,532 INFO L130 BoogieDeclarations]: Found specification of procedure isspace [2020-09-25 13:39:23,532 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-09-25 13:39:23,532 INFO L130 BoogieDeclarations]: Found specification of procedure strrand [2020-09-25 13:39:23,532 INFO L130 BoogieDeclarations]: Found specification of procedure istrrand [2020-09-25 13:39:23,533 INFO L130 BoogieDeclarations]: Found specification of procedure istrchr [2020-09-25 13:39:23,533 INFO L130 BoogieDeclarations]: Found specification of procedure istrrchr [2020-09-25 13:39:23,533 INFO L130 BoogieDeclarations]: Found specification of procedure istrncmp [2020-09-25 13:39:23,533 INFO L130 BoogieDeclarations]: Found specification of procedure istrstr [2020-09-25 13:39:23,533 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncpy [2020-09-25 13:39:23,533 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcpy [2020-09-25 13:39:23,534 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcat [2020-09-25 13:39:23,534 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncat [2020-09-25 13:39:23,534 INFO L130 BoogieDeclarations]: Found specification of procedure r_memcpy [2020-09-25 13:39:23,534 INFO L130 BoogieDeclarations]: Found specification of procedure parse_expression_list [2020-09-25 13:39:23,534 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 13:39:23,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 13:39:23,534 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 13:39:23,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 13:39:23,534 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:39:23,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:39:23,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:39:24,072 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:39:24,072 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-25 13:39:24,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:39:24 BoogieIcfgContainer [2020-09-25 13:39:24,079 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:39:24,081 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:39:24,081 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:39:24,085 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:39:24,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:39:22" (1/3) ... [2020-09-25 13:39:24,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ae98669 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:39:24, skipping insertion in model container [2020-09-25 13:39:24,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:39:23" (2/3) ... [2020-09-25 13:39:24,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ae98669 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:39:24, skipping insertion in model container [2020-09-25 13:39:24,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:39:24" (3/3) ... [2020-09-25 13:39:24,090 INFO L109 eAbstractionObserver]: Analyzing ICFG verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-09-25 13:39:24,103 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:39:24,118 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:39:24,143 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:39:24,191 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:39:24,191 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:39:24,192 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:39:24,192 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:39:24,192 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:39:24,192 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:39:24,193 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:39:24,193 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:39:24,226 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states. [2020-09-25 13:39:24,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-25 13:39:24,236 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:39:24,238 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] [2020-09-25 13:39:24,238 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:39:24,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:39:24,247 INFO L82 PathProgramCache]: Analyzing trace with hash 2116113079, now seen corresponding path program 1 times [2020-09-25 13:39:24,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:39:24,259 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [371517993] [2020-09-25 13:39:24,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:39:24,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:24,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:24,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:24,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:25,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:25,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:25,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:26,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:26,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 13:39:26,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:39:26,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2234 [2020-09-25 13:39:26,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:26,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:26,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:39:26,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 13:39:26,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 13:39:26,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 13:39:26,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:39:26,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:26,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:26,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:26,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:39:26,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:26,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 13:39:26,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:26,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:26,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:39:26,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:26,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:39:26,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:26,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 13:39:26,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:26,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:26,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:26,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 13:39:26,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:26,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 13:39:26,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:26,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:26,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:26,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:26,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 13:39:26,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:26,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:39:26,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [371517993] [2020-09-25 13:39:26,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:39:26,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 13:39:26,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993061917] [2020-09-25 13:39:26,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:39:26,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:39:26,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:39:26,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:39:26,996 INFO L87 Difference]: Start difference. First operand 123 states. Second operand 8 states. [2020-09-25 13:39:27,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:39:27,736 INFO L93 Difference]: Finished difference Result 325 states and 377 transitions. [2020-09-25 13:39:27,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 13:39:27,738 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 48 [2020-09-25 13:39:27,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:39:27,755 INFO L225 Difference]: With dead ends: 325 [2020-09-25 13:39:27,755 INFO L226 Difference]: Without dead ends: 189 [2020-09-25 13:39:27,761 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-09-25 13:39:27,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-09-25 13:39:27,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 159. [2020-09-25 13:39:27,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-09-25 13:39:27,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 178 transitions. [2020-09-25 13:39:27,839 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 178 transitions. Word has length 48 [2020-09-25 13:39:27,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:39:27,839 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 178 transitions. [2020-09-25 13:39:27,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:39:27,840 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 178 transitions. [2020-09-25 13:39:27,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-25 13:39:27,845 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:39:27,845 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] [2020-09-25 13:39:27,845 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:39:27,846 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:39:27,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:39:27,846 INFO L82 PathProgramCache]: Analyzing trace with hash 279562443, now seen corresponding path program 1 times [2020-09-25 13:39:27,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:39:27,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1406548685] [2020-09-25 13:39:27,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:39:27,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:27,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:27,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:27,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:27,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:28,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:29,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:31,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:31,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:31,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:32,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:32,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 13:39:32,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 13:39:32,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 13:39:32,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:32,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:32,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:39:32,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 13:39:32,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 13:39:32,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:32,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:39:32,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:32,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:32,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:32,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:39:32,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:32,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:39:32,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:32,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:32,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:39:32,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:32,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:39:32,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:32,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-25 13:39:32,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:32,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:32,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:32,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 13:39:32,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:32,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 13:39:32,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:32,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:32,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:32,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:32,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 13:39:32,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:32,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:39:32,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1406548685] [2020-09-25 13:39:32,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:39:32,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 13:39:32,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586425548] [2020-09-25 13:39:32,991 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:39:32,991 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:39:32,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:39:32,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:39:32,992 INFO L87 Difference]: Start difference. First operand 159 states and 178 transitions. Second operand 8 states. [2020-09-25 13:39:33,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:39:33,431 INFO L93 Difference]: Finished difference Result 228 states and 256 transitions. [2020-09-25 13:39:33,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 13:39:33,432 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 62 [2020-09-25 13:39:33,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:39:33,438 INFO L225 Difference]: With dead ends: 228 [2020-09-25 13:39:33,438 INFO L226 Difference]: Without dead ends: 226 [2020-09-25 13:39:33,439 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-09-25 13:39:33,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-09-25 13:39:33,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 168. [2020-09-25 13:39:33,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-09-25 13:39:33,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 189 transitions. [2020-09-25 13:39:33,461 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 189 transitions. Word has length 62 [2020-09-25 13:39:33,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:39:33,462 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 189 transitions. [2020-09-25 13:39:33,462 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:39:33,462 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 189 transitions. [2020-09-25 13:39:33,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 13:39:33,465 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:39:33,465 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] [2020-09-25 13:39:33,466 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:39:33,466 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:39:33,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:39:33,466 INFO L82 PathProgramCache]: Analyzing trace with hash -53936734, now seen corresponding path program 1 times [2020-09-25 13:39:33,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:39:33,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1777820716] [2020-09-25 13:39:33,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:39:33,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:33,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:33,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:33,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:33,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:34,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:34,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:34,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:34,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:34,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:38,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:38,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 13:39:38,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 13:39:38,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 13:39:38,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:38,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:38,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:39:38,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 13:39:38,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 13:39:38,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:38,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:39:38,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:38,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:38,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:38,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:39:38,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:38,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:39:38,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:38,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:38,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:39:38,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:38,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:39:38,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:39:38,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-25 13:39:38,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:38,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:38,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:38,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 13:39:38,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:38,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 13:39:38,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:38,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:38,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:39:38,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:39:38,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:39:38,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:38,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:39:38,609 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1777820716] [2020-09-25 13:39:38,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:39:38,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 13:39:38,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673180034] [2020-09-25 13:39:38,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:39:38,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:39:38,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:39:38,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:39:38,612 INFO L87 Difference]: Start difference. First operand 168 states and 189 transitions. Second operand 8 states. [2020-09-25 13:39:39,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:39:39,075 INFO L93 Difference]: Finished difference Result 341 states and 384 transitions. [2020-09-25 13:39:39,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 13:39:39,078 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-09-25 13:39:39,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:39:39,080 INFO L225 Difference]: With dead ends: 341 [2020-09-25 13:39:39,081 INFO L226 Difference]: Without dead ends: 252 [2020-09-25 13:39:39,083 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-09-25 13:39:39,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-09-25 13:39:39,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 199. [2020-09-25 13:39:39,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-09-25 13:39:39,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 225 transitions. [2020-09-25 13:39:39,124 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 225 transitions. Word has length 63 [2020-09-25 13:39:39,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:39:39,124 INFO L479 AbstractCegarLoop]: Abstraction has 199 states and 225 transitions. [2020-09-25 13:39:39,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:39:39,125 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 225 transitions. [2020-09-25 13:39:39,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 13:39:39,128 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:39:39,131 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] [2020-09-25 13:39:39,131 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:39:39,131 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:39:39,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:39:39,132 INFO L82 PathProgramCache]: Analyzing trace with hash 322027262, now seen corresponding path program 1 times [2020-09-25 13:39:39,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:39:39,132 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1028734512] [2020-09-25 13:39:39,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:39:39,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:39,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:39,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:39,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:39,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:39,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:39,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:39,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:40,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:40,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:40,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:44,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:44,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 13:39:44,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 13:39:44,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 13:39:44,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:44,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:44,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:39:44,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 13:39:44,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 13:39:44,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:44,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:39:44,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:44,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:44,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:44,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:39:44,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:44,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:39:44,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:44,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:44,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:39:44,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:44,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:39:44,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:44,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-25 13:39:44,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:44,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:44,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:44,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 13:39:44,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:44,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:39:44,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:44,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:44,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:39:44,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:39:44,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:39:44,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:44,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:39:44,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1028734512] [2020-09-25 13:39:44,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:39:44,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 13:39:44,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508854045] [2020-09-25 13:39:44,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:39:44,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:39:44,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:39:44,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:39:44,277 INFO L87 Difference]: Start difference. First operand 199 states and 225 transitions. Second operand 8 states. [2020-09-25 13:39:44,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:39:44,618 INFO L93 Difference]: Finished difference Result 321 states and 362 transitions. [2020-09-25 13:39:44,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 13:39:44,619 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-09-25 13:39:44,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:39:44,623 INFO L225 Difference]: With dead ends: 321 [2020-09-25 13:39:44,623 INFO L226 Difference]: Without dead ends: 229 [2020-09-25 13:39:44,626 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2020-09-25 13:39:44,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-09-25 13:39:44,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 200. [2020-09-25 13:39:44,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-09-25 13:39:44,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 226 transitions. [2020-09-25 13:39:44,646 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 226 transitions. Word has length 63 [2020-09-25 13:39:44,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:39:44,646 INFO L479 AbstractCegarLoop]: Abstraction has 200 states and 226 transitions. [2020-09-25 13:39:44,647 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:39:44,647 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 226 transitions. [2020-09-25 13:39:44,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-25 13:39:44,649 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:39:44,649 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] [2020-09-25 13:39:44,649 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:39:44,649 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:39:44,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:39:44,656 INFO L82 PathProgramCache]: Analyzing trace with hash -1192248927, now seen corresponding path program 1 times [2020-09-25 13:39:44,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:39:44,657 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1449233758] [2020-09-25 13:39:44,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:39:44,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:44,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:44,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:44,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:44,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:44,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:45,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:45,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:45,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:48,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:48,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:49,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:49,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:49,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 13:39:49,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 13:39:49,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 13:39:49,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:49,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:49,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:39:49,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 13:39:49,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 13:39:49,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:39:49,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:39:49,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:49,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:49,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:49,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:39:49,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:49,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 13:39:49,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:49,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:49,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:39:49,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:49,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:39:49,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:49,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 13:39:49,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:49,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:49,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:49,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 13:39:49,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:49,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:39:49,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:49,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:49,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:39:49,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:39:49,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:39:49,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:49,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:39:49,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1449233758] [2020-09-25 13:39:49,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:39:49,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 13:39:49,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058500233] [2020-09-25 13:39:49,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:39:49,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:39:49,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:39:49,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:39:49,784 INFO L87 Difference]: Start difference. First operand 200 states and 226 transitions. Second operand 8 states. [2020-09-25 13:39:50,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:39:50,291 INFO L93 Difference]: Finished difference Result 328 states and 368 transitions. [2020-09-25 13:39:50,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 13:39:50,291 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 65 [2020-09-25 13:39:50,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:39:50,297 INFO L225 Difference]: With dead ends: 328 [2020-09-25 13:39:50,297 INFO L226 Difference]: Without dead ends: 236 [2020-09-25 13:39:50,298 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2020-09-25 13:39:50,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2020-09-25 13:39:50,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 199. [2020-09-25 13:39:50,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-09-25 13:39:50,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 224 transitions. [2020-09-25 13:39:50,308 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 224 transitions. Word has length 65 [2020-09-25 13:39:50,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:39:50,309 INFO L479 AbstractCegarLoop]: Abstraction has 199 states and 224 transitions. [2020-09-25 13:39:50,309 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:39:50,309 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 224 transitions. [2020-09-25 13:39:50,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-09-25 13:39:50,310 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:39:50,311 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] [2020-09-25 13:39:50,311 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:39:50,311 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:39:50,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:39:50,311 INFO L82 PathProgramCache]: Analyzing trace with hash 2088092010, now seen corresponding path program 1 times [2020-09-25 13:39:50,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:39:50,312 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [44065100] [2020-09-25 13:39:50,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:39:50,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:50,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:50,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:50,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:50,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:50,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:50,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:50,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:52,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:53,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:53,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:53,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:53,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:55,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:55,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 13:39:55,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 13:39:55,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 13:39:55,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:55,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:55,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:39:55,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 13:39:55,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 13:39:55,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:39:55,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:39:55,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:55,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:55,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:55,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:39:55,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:55,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:39:55,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:55,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:55,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:39:55,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:55,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:39:55,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:55,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-25 13:39:55,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:55,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:55,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:55,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 13:39:55,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:55,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:39:55,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:55,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:55,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:39:55,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:39:55,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:39:55,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:39:55,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:39:55,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [44065100] [2020-09-25 13:39:55,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:39:55,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 13:39:55,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848784681] [2020-09-25 13:39:55,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:39:55,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:39:55,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:39:55,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:39:55,420 INFO L87 Difference]: Start difference. First operand 199 states and 224 transitions. Second operand 8 states. [2020-09-25 13:39:55,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:39:55,898 INFO L93 Difference]: Finished difference Result 599 states and 687 transitions. [2020-09-25 13:39:55,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 13:39:55,900 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 66 [2020-09-25 13:39:55,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:39:55,904 INFO L225 Difference]: With dead ends: 599 [2020-09-25 13:39:55,904 INFO L226 Difference]: Without dead ends: 488 [2020-09-25 13:39:55,906 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2020-09-25 13:39:55,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2020-09-25 13:39:55,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 287. [2020-09-25 13:39:55,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-09-25 13:39:55,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 327 transitions. [2020-09-25 13:39:55,919 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 327 transitions. Word has length 66 [2020-09-25 13:39:55,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:39:55,920 INFO L479 AbstractCegarLoop]: Abstraction has 287 states and 327 transitions. [2020-09-25 13:39:55,920 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:39:55,920 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 327 transitions. [2020-09-25 13:39:55,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 13:39:55,921 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:39:55,921 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] [2020-09-25 13:39:55,922 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 13:39:55,922 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:39:55,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:39:55,922 INFO L82 PathProgramCache]: Analyzing trace with hash -1110941080, now seen corresponding path program 1 times [2020-09-25 13:39:55,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:39:55,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [211867834] [2020-09-25 13:39:55,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:39:55,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:55,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:55,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:55,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:55,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:56,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:56,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:56,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:56,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:58,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:58,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:59,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:00,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:00,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 13:40:00,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 13:40:00,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 13:40:00,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:00,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:00,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:40:00,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 13:40:00,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 13:40:00,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:01,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:40:01,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:01,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:01,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:01,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:40:01,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:01,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 13:40:01,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:01,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:01,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:40:01,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:01,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:40:01,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:01,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-25 13:40:01,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:01,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:01,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:01,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 13:40:01,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:01,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:40:01,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:01,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:01,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:40:01,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:40:01,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:40:01,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:01,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:40:01,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [211867834] [2020-09-25 13:40:01,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:40:01,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 13:40:01,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114254573] [2020-09-25 13:40:01,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:40:01,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:40:01,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:40:01,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:40:01,062 INFO L87 Difference]: Start difference. First operand 287 states and 327 transitions. Second operand 8 states. [2020-09-25 13:40:01,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:40:01,563 INFO L93 Difference]: Finished difference Result 432 states and 488 transitions. [2020-09-25 13:40:01,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 13:40:01,564 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 67 [2020-09-25 13:40:01,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:40:01,567 INFO L225 Difference]: With dead ends: 432 [2020-09-25 13:40:01,567 INFO L226 Difference]: Without dead ends: 335 [2020-09-25 13:40:01,568 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-09-25 13:40:01,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2020-09-25 13:40:01,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 292. [2020-09-25 13:40:01,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2020-09-25 13:40:01,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 331 transitions. [2020-09-25 13:40:01,579 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 331 transitions. Word has length 67 [2020-09-25 13:40:01,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:40:01,579 INFO L479 AbstractCegarLoop]: Abstraction has 292 states and 331 transitions. [2020-09-25 13:40:01,579 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:40:01,580 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 331 transitions. [2020-09-25 13:40:01,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-25 13:40:01,581 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:40:01,581 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:40:01,581 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 13:40:01,581 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:40:01,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:40:01,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1427185919, now seen corresponding path program 1 times [2020-09-25 13:40:01,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:40:01,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [864344632] [2020-09-25 13:40:01,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:40:01,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:01,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:01,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:01,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:01,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:01,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:01,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:02,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:02,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:06,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:06,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 13:40:06,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 13:40:06,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 13:40:06,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:06,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:06,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:40:06,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 13:40:06,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 13:40:06,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:06,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:40:06,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:06,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:06,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:06,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:40:06,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:06,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:40:06,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:06,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:06,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:40:06,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:06,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:40:06,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:06,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-25 13:40:06,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:06,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:06,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:06,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 13:40:06,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:06,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:40:06,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:06,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:06,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:40:06,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:40:06,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:40:06,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:06,691 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:40:06,692 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [864344632] [2020-09-25 13:40:06,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:40:06,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 13:40:06,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550030698] [2020-09-25 13:40:06,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:40:06,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:40:06,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:40:06,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:40:06,694 INFO L87 Difference]: Start difference. First operand 292 states and 331 transitions. Second operand 8 states. [2020-09-25 13:40:07,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:40:07,305 INFO L93 Difference]: Finished difference Result 513 states and 581 transitions. [2020-09-25 13:40:07,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 13:40:07,306 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 70 [2020-09-25 13:40:07,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:40:07,308 INFO L225 Difference]: With dead ends: 513 [2020-09-25 13:40:07,308 INFO L226 Difference]: Without dead ends: 416 [2020-09-25 13:40:07,309 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-09-25 13:40:07,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2020-09-25 13:40:07,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 339. [2020-09-25 13:40:07,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2020-09-25 13:40:07,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 388 transitions. [2020-09-25 13:40:07,321 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 388 transitions. Word has length 70 [2020-09-25 13:40:07,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:40:07,322 INFO L479 AbstractCegarLoop]: Abstraction has 339 states and 388 transitions. [2020-09-25 13:40:07,322 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:40:07,322 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 388 transitions. [2020-09-25 13:40:07,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 13:40:07,323 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:40:07,323 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 13:40:07,324 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 13:40:07,324 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:40:07,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:40:07,324 INFO L82 PathProgramCache]: Analyzing trace with hash -656915567, now seen corresponding path program 1 times [2020-09-25 13:40:07,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:40:07,325 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [740266665] [2020-09-25 13:40:07,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:40:07,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:07,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:07,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:07,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:07,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:07,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:07,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:07,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:07,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:11,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:12,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:12,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 13:40:12,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 13:40:12,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 13:40:12,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:12,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:12,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:40:12,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 13:40:12,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 13:40:12,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:12,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:40:12,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:12,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:12,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:12,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:40:12,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:12,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:40:12,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:12,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:12,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:40:12,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:12,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:40:12,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:12,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-25 13:40:12,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:12,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:12,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:12,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 13:40:12,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:12,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:40:12,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:12,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:12,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:40:12,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:40:12,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:40:12,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:12,460 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:40:12,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [740266665] [2020-09-25 13:40:12,470 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:40:12,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 13:40:12,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227043023] [2020-09-25 13:40:12,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 13:40:12,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:40:12,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 13:40:12,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-09-25 13:40:12,474 INFO L87 Difference]: Start difference. First operand 339 states and 388 transitions. Second operand 10 states. [2020-09-25 13:40:13,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:40:13,200 INFO L93 Difference]: Finished difference Result 537 states and 609 transitions. [2020-09-25 13:40:13,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 13:40:13,201 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 73 [2020-09-25 13:40:13,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:40:13,205 INFO L225 Difference]: With dead ends: 537 [2020-09-25 13:40:13,206 INFO L226 Difference]: Without dead ends: 440 [2020-09-25 13:40:13,207 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2020-09-25 13:40:13,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2020-09-25 13:40:13,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 360. [2020-09-25 13:40:13,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 360 states. [2020-09-25 13:40:13,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 411 transitions. [2020-09-25 13:40:13,230 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 411 transitions. Word has length 73 [2020-09-25 13:40:13,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:40:13,231 INFO L479 AbstractCegarLoop]: Abstraction has 360 states and 411 transitions. [2020-09-25 13:40:13,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 13:40:13,231 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 411 transitions. [2020-09-25 13:40:13,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-09-25 13:40:13,233 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:40:13,234 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 13:40:13,234 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 13:40:13,234 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:40:13,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:40:13,235 INFO L82 PathProgramCache]: Analyzing trace with hash -1536848059, now seen corresponding path program 1 times [2020-09-25 13:40:13,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:40:13,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1954276105] [2020-09-25 13:40:13,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:40:13,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:13,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:13,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:13,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:13,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:13,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:13,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:14,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:14,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:14,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:14,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking...