/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=0.3 --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 12:31:43,217 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:31:43,223 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:31:43,271 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:31:43,271 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:31:43,284 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:31:43,286 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:31:43,290 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:31:43,294 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:31:43,298 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:31:43,299 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:31:43,301 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:31:43,301 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:31:43,304 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:31:43,309 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:31:43,311 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:31:43,313 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:31:43,315 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:31:43,318 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:31:43,328 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:31:43,330 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:31:43,331 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:31:43,333 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:31:43,334 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:31:43,337 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:31:43,337 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:31:43,337 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:31:43,340 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:31:43,341 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:31:43,342 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:31:43,342 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:31:43,343 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:31:43,344 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:31:43,345 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:31:43,346 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:31:43,347 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:31:43,347 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:31:43,348 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:31:43,348 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:31:43,349 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:31:43,351 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:31:43,352 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 12:31:43,403 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:31:43,404 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:31:43,406 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:31:43,407 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:31:43,407 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:31:43,407 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:31:43,408 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:31:43,408 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:31:43,408 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:31:43,408 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:31:43,410 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:31:43,410 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:31:43,410 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:31:43,411 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:31:43,411 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:31:43,411 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:31:43,411 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:31:43,411 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:31:43,412 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:31:43,412 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:31:43,412 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:31:43,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:31:43,413 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:31:43,413 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:31:43,413 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:31:43,413 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:31:43,413 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:31:43,414 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:31:43,414 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:31:43,414 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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;log-additional-information=true; [2020-09-25 12:31:43,880 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:31:43,898 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:31:43,902 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:31:43,904 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:31:43,905 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:31:43,906 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-09-25 12:31:43,988 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ce705affe/3379be86ddd24844b5254421edf4a12a/FLAGd58d73768 [2020-09-25 12:31:44,582 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:31:44,583 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-09-25 12:31:44,593 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ce705affe/3379be86ddd24844b5254421edf4a12a/FLAGd58d73768 [2020-09-25 12:31:44,946 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ce705affe/3379be86ddd24844b5254421edf4a12a [2020-09-25 12:31:44,961 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:31:44,968 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:31:44,969 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:31:44,969 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:31:44,973 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:31:44,974 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:31:44" (1/1) ... [2020-09-25 12:31:44,979 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e0901a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:31:44, skipping insertion in model container [2020-09-25 12:31:44,979 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:31:44" (1/1) ... [2020-09-25 12:31:44,988 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:31:45,019 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:31:45,258 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:31:45,269 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:31:45,413 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:31:45,441 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:31:45,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:31:45 WrapperNode [2020-09-25 12:31:45,442 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:31:45,443 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:31:45,443 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:31:45,443 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:31:45,459 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:31:45" (1/1) ... [2020-09-25 12:31:45,459 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:31:45" (1/1) ... [2020-09-25 12:31:45,472 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:31:45" (1/1) ... [2020-09-25 12:31:45,472 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:31:45" (1/1) ... [2020-09-25 12:31:45,501 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:31:45" (1/1) ... [2020-09-25 12:31:45,515 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:31:45" (1/1) ... [2020-09-25 12:31:45,518 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:31:45" (1/1) ... [2020-09-25 12:31:45,524 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:31:45,524 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:31:45,525 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:31:45,525 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:31:45,528 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:31:45" (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 12:31:45,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:31:45,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:31:45,602 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 12:31:45,602 INFO L138 BoogieDeclarations]: Found implementation of procedure r_strncpy [2020-09-25 12:31:45,603 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_expression_list [2020-09-25 12:31:45,603 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:31:45,603 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:31:45,603 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 12:31:45,603 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2020-09-25 12:31:45,604 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2020-09-25 12:31:45,604 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2020-09-25 12:31:45,604 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2020-09-25 12:31:45,604 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy_ptr [2020-09-25 12:31:45,604 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2020-09-25 12:31:45,605 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2020-09-25 12:31:45,605 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2020-09-25 12:31:45,605 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2020-09-25 12:31:45,605 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2020-09-25 12:31:45,606 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-09-25 12:31:45,606 INFO L130 BoogieDeclarations]: Found specification of procedure isascii [2020-09-25 12:31:45,606 INFO L130 BoogieDeclarations]: Found specification of procedure isspace [2020-09-25 12:31:45,606 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-09-25 12:31:45,607 INFO L130 BoogieDeclarations]: Found specification of procedure strrand [2020-09-25 12:31:45,607 INFO L130 BoogieDeclarations]: Found specification of procedure istrrand [2020-09-25 12:31:45,607 INFO L130 BoogieDeclarations]: Found specification of procedure istrchr [2020-09-25 12:31:45,607 INFO L130 BoogieDeclarations]: Found specification of procedure istrrchr [2020-09-25 12:31:45,607 INFO L130 BoogieDeclarations]: Found specification of procedure istrncmp [2020-09-25 12:31:45,607 INFO L130 BoogieDeclarations]: Found specification of procedure istrstr [2020-09-25 12:31:45,608 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncpy [2020-09-25 12:31:45,608 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcpy [2020-09-25 12:31:45,608 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcat [2020-09-25 12:31:45,608 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncat [2020-09-25 12:31:45,608 INFO L130 BoogieDeclarations]: Found specification of procedure r_memcpy [2020-09-25 12:31:45,608 INFO L130 BoogieDeclarations]: Found specification of procedure parse_expression_list [2020-09-25 12:31:45,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 12:31:45,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 12:31:45,609 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 12:31:45,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 12:31:45,609 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:31:45,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:31:45,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:31:46,121 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:31:46,121 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-25 12:31:46,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:31:46 BoogieIcfgContainer [2020-09-25 12:31:46,128 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:31:46,130 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:31:46,130 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:31:46,134 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:31:46,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:31:44" (1/3) ... [2020-09-25 12:31:46,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bca7dce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:31:46, skipping insertion in model container [2020-09-25 12:31:46,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:31:45" (2/3) ... [2020-09-25 12:31:46,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bca7dce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:31:46, skipping insertion in model container [2020-09-25 12:31:46,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:31:46" (3/3) ... [2020-09-25 12:31:46,138 INFO L109 eAbstractionObserver]: Analyzing ICFG verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-09-25 12:31:46,150 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:31:46,159 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:31:46,179 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:31:46,206 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:31:46,207 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:31:46,207 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:31:46,207 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:31:46,207 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:31:46,207 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:31:46,208 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:31:46,208 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:31:46,234 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states. [2020-09-25 12:31:46,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-25 12:31:46,246 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:31:46,247 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 12:31:46,248 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:31:46,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:31:46,256 INFO L82 PathProgramCache]: Analyzing trace with hash 2116113079, now seen corresponding path program 1 times [2020-09-25 12:31:46,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:31:46,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1624661090] [2020-09-25 12:31:46,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:31:46,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:31:46,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:31:46,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:31:46,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:31:47,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:31:47,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:31:47,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:31:48,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:31:48,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 12:31:48,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:31:48,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2443 [2020-09-25 12:31:48,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:31:48,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:31:48,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:31:48,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 12:31:48,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 12:31:48,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-25 12:31:49,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:31:49,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:31:49,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:31:49,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:31:49,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:31:49,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:31:49,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 12:31:49,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:31:49,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:31:49,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:31:49,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:31:49,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:31:49,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:31:49,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 12:31:49,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:31:49,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:31:49,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:31:49,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 12:31:49,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:31:49,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 12:31:49,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:31:49,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:31:49,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:31:49,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:31:49,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 12:31:49,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:31:49,172 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 12:31:49,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1624661090] [2020-09-25 12:31:49,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:31:49,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 12:31:49,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628465645] [2020-09-25 12:31:49,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 12:31:49,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:31:49,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 12:31:49,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:31:49,214 INFO L87 Difference]: Start difference. First operand 123 states. Second operand 8 states. [2020-09-25 12:31:49,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:31:49,985 INFO L93 Difference]: Finished difference Result 325 states and 377 transitions. [2020-09-25 12:31:49,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 12:31:49,988 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 48 [2020-09-25 12:31:49,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:31:50,010 INFO L225 Difference]: With dead ends: 325 [2020-09-25 12:31:50,010 INFO L226 Difference]: Without dead ends: 189 [2020-09-25 12:31:50,018 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 12:31:50,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-09-25 12:31:50,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 159. [2020-09-25 12:31:50,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-09-25 12:31:50,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 178 transitions. [2020-09-25 12:31:50,154 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 178 transitions. Word has length 48 [2020-09-25 12:31:50,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:31:50,157 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 178 transitions. [2020-09-25 12:31:50,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 12:31:50,163 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 178 transitions. [2020-09-25 12:31:50,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-25 12:31:50,170 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:31:50,173 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 12:31:50,173 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:31:50,174 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:31:50,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:31:50,175 INFO L82 PathProgramCache]: Analyzing trace with hash 279562443, now seen corresponding path program 1 times [2020-09-25 12:31:50,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:31:50,176 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1641232275] [2020-09-25 12:31:50,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:31:50,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:31:50,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:31:50,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:31:50,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:31:50,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:31:50,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:31:51,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:31:53,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:31:53,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:31:53,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:31:55,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:31:55,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 12:31:55,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 12:31:55,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 12:31:55,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:31:55,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:31:55,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:31:55,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 12:31:55,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 12:31:55,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 12:31:55,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:31:55,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:31:55,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:31:55,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:31:55,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:31:55,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:31:55,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 12:31:55,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:31:55,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:31:55,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:31:55,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:31:55,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:31:55,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:31:55,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-25 12:31:55,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:31:55,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:31:55,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:31:55,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 12:31:55,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:31:55,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 12:31:55,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:31:55,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:31:55,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:31:55,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:31:55,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 12:31:55,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:31:55,385 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 12:31:55,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1641232275] [2020-09-25 12:31:55,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:31:55,387 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 12:31:55,387 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055979070] [2020-09-25 12:31:55,391 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 12:31:55,392 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:31:55,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 12:31:55,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:31:55,394 INFO L87 Difference]: Start difference. First operand 159 states and 178 transitions. Second operand 8 states. [2020-09-25 12:31:55,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:31:55,977 INFO L93 Difference]: Finished difference Result 228 states and 256 transitions. [2020-09-25 12:31:55,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 12:31:55,978 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 62 [2020-09-25 12:31:55,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:31:55,985 INFO L225 Difference]: With dead ends: 228 [2020-09-25 12:31:55,985 INFO L226 Difference]: Without dead ends: 226 [2020-09-25 12:31:55,989 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 12:31:55,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-09-25 12:31:56,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 168. [2020-09-25 12:31:56,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-09-25 12:31:56,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 189 transitions. [2020-09-25 12:31:56,028 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 189 transitions. Word has length 62 [2020-09-25 12:31:56,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:31:56,029 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 189 transitions. [2020-09-25 12:31:56,029 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 12:31:56,029 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 189 transitions. [2020-09-25 12:31:56,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 12:31:56,035 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:31:56,035 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 12:31:56,035 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:31:56,036 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:31:56,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:31:56,039 INFO L82 PathProgramCache]: Analyzing trace with hash -53936734, now seen corresponding path program 1 times [2020-09-25 12:31:56,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:31:56,040 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1055171017] [2020-09-25 12:31:56,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:31:56,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:31:56,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:31:56,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:31:56,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:31:56,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:31:56,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:31:56,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:31:57,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:31:57,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:31:57,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:01,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:01,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 12:32:01,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 12:32:01,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 12:32:01,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:01,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:01,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:32:01,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 12:32:01,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 12:32:01,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:01,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:32:01,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:01,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:01,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:01,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:32:01,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:01,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 12:32:01,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:01,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:01,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:32:01,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:01,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:32:01,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:01,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-25 12:32:01,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:01,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:01,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:01,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 12:32:01,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:01,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 12:32:01,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:01,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:01,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:32:01,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:32:01,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:32:01,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:01,182 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 12:32:01,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1055171017] [2020-09-25 12:32:01,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:32:01,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 12:32:01,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58052623] [2020-09-25 12:32:01,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 12:32:01,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:32:01,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 12:32:01,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:32:01,187 INFO L87 Difference]: Start difference. First operand 168 states and 189 transitions. Second operand 8 states. [2020-09-25 12:32:01,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:32:01,724 INFO L93 Difference]: Finished difference Result 326 states and 367 transitions. [2020-09-25 12:32:01,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 12:32:01,725 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-09-25 12:32:01,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:32:01,728 INFO L225 Difference]: With dead ends: 326 [2020-09-25 12:32:01,729 INFO L226 Difference]: Without dead ends: 237 [2020-09-25 12:32:01,730 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 12:32:01,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-09-25 12:32:01,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 196. [2020-09-25 12:32:01,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-09-25 12:32:01,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 221 transitions. [2020-09-25 12:32:01,758 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 221 transitions. Word has length 63 [2020-09-25 12:32:01,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:32:01,759 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 221 transitions. [2020-09-25 12:32:01,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 12:32:01,759 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 221 transitions. [2020-09-25 12:32:01,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 12:32:01,764 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:32:01,764 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 12:32:01,764 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:32:01,764 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:32:01,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:32:01,770 INFO L82 PathProgramCache]: Analyzing trace with hash 322027262, now seen corresponding path program 1 times [2020-09-25 12:32:01,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:32:01,770 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1238595280] [2020-09-25 12:32:01,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:32:01,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:01,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:01,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:01,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:01,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:02,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:02,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:02,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:03,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:03,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:03,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:06,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:06,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 12:32:06,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 12:32:06,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 12:32:06,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:06,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:06,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:32:06,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 12:32:06,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 12:32:06,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:06,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:32:06,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:06,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:06,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:06,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:32:06,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:06,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 12:32:06,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:06,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:06,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:32:06,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:06,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:32:06,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:06,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-25 12:32:06,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:06,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:06,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:06,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 12:32:06,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:06,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 12:32:06,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:06,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:06,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:32:06,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:32:06,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:32:06,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:06,917 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 12:32:06,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1238595280] [2020-09-25 12:32:06,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:32:06,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 12:32:06,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108406919] [2020-09-25 12:32:06,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 12:32:06,919 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:32:06,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 12:32:06,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:32:06,920 INFO L87 Difference]: Start difference. First operand 196 states and 221 transitions. Second operand 8 states. [2020-09-25 12:32:07,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:32:07,339 INFO L93 Difference]: Finished difference Result 324 states and 364 transitions. [2020-09-25 12:32:07,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 12:32:07,339 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-09-25 12:32:07,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:32:07,341 INFO L225 Difference]: With dead ends: 324 [2020-09-25 12:32:07,342 INFO L226 Difference]: Without dead ends: 232 [2020-09-25 12:32:07,344 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 12:32:07,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-09-25 12:32:07,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 197. [2020-09-25 12:32:07,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-09-25 12:32:07,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 222 transitions. [2020-09-25 12:32:07,357 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 222 transitions. Word has length 63 [2020-09-25 12:32:07,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:32:07,358 INFO L479 AbstractCegarLoop]: Abstraction has 197 states and 222 transitions. [2020-09-25 12:32:07,358 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 12:32:07,358 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 222 transitions. [2020-09-25 12:32:07,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-25 12:32:07,360 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:32:07,360 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 12:32:07,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:32:07,361 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:32:07,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:32:07,361 INFO L82 PathProgramCache]: Analyzing trace with hash 1860552927, now seen corresponding path program 1 times [2020-09-25 12:32:07,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:32:07,362 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [172190686] [2020-09-25 12:32:07,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:32:07,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:07,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:07,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:07,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:07,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:07,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:07,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:09,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:09,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:10,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:10,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:12,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:12,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 12:32:12,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 12:32:12,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 12:32:12,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:12,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:12,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:32:12,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 12:32:12,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 12:32:12,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:12,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:32:12,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:12,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:12,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:12,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:32:12,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:12,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:32:12,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:12,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:12,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:32:12,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:12,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:32:12,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:12,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 12:32:12,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:12,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:12,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:12,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 12:32:12,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:12,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 12:32:12,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:12,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:12,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:32:12,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:32:12,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:32:12,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:12,466 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 12:32:12,466 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [172190686] [2020-09-25 12:32:12,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:32:12,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 12:32:12,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365194069] [2020-09-25 12:32:12,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 12:32:12,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:32:12,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 12:32:12,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:32:12,469 INFO L87 Difference]: Start difference. First operand 197 states and 222 transitions. Second operand 8 states. [2020-09-25 12:32:12,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:32:12,931 INFO L93 Difference]: Finished difference Result 344 states and 387 transitions. [2020-09-25 12:32:12,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 12:32:12,931 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 65 [2020-09-25 12:32:12,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:32:12,935 INFO L225 Difference]: With dead ends: 344 [2020-09-25 12:32:12,935 INFO L226 Difference]: Without dead ends: 255 [2020-09-25 12:32:12,936 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 12:32:12,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-09-25 12:32:12,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 206. [2020-09-25 12:32:12,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-09-25 12:32:12,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 233 transitions. [2020-09-25 12:32:12,957 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 233 transitions. Word has length 65 [2020-09-25 12:32:12,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:32:12,958 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 233 transitions. [2020-09-25 12:32:12,958 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 12:32:12,958 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 233 transitions. [2020-09-25 12:32:12,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-09-25 12:32:12,972 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:32:12,972 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 12:32:12,973 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:32:12,973 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:32:12,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:32:12,973 INFO L82 PathProgramCache]: Analyzing trace with hash 2088092010, now seen corresponding path program 1 times [2020-09-25 12:32:12,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:32:12,974 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [427396435] [2020-09-25 12:32:12,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:32:12,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:12,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:13,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:13,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:13,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:13,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:13,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:13,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:14,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:16,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:16,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:16,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:16,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:17,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:17,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 12:32:17,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 12:32:17,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 12:32:17,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:17,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:17,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:32:17,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 12:32:17,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 12:32:17,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:32:18,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:32:18,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:18,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:18,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:18,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:32:18,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:18,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 12:32:18,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:18,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:18,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:32:18,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:18,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:32:18,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:32:18,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-25 12:32:18,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:18,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:18,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:18,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 12:32:18,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:18,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 12:32:18,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:18,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:18,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:32:18,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:32:18,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:32:18,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:32:18,087 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 12:32:18,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [427396435] [2020-09-25 12:32:18,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:32:18,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 12:32:18,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673564043] [2020-09-25 12:32:18,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 12:32:18,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:32:18,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 12:32:18,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:32:18,091 INFO L87 Difference]: Start difference. First operand 206 states and 233 transitions. Second operand 8 states. [2020-09-25 12:32:18,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:32:18,550 INFO L93 Difference]: Finished difference Result 620 states and 714 transitions. [2020-09-25 12:32:18,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 12:32:18,551 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 66 [2020-09-25 12:32:18,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:32:18,555 INFO L225 Difference]: With dead ends: 620 [2020-09-25 12:32:18,555 INFO L226 Difference]: Without dead ends: 503 [2020-09-25 12:32:18,556 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 12:32:18,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2020-09-25 12:32:18,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 292. [2020-09-25 12:32:18,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2020-09-25 12:32:18,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 331 transitions. [2020-09-25 12:32:18,569 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 331 transitions. Word has length 66 [2020-09-25 12:32:18,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:32:18,569 INFO L479 AbstractCegarLoop]: Abstraction has 292 states and 331 transitions. [2020-09-25 12:32:18,569 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 12:32:18,570 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 331 transitions. [2020-09-25 12:32:18,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-25 12:32:18,571 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:32:18,571 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 12:32:18,571 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 12:32:18,571 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:32:18,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:32:18,572 INFO L82 PathProgramCache]: Analyzing trace with hash 1427185919, now seen corresponding path program 1 times [2020-09-25 12:32:18,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:32:18,572 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1709222652] [2020-09-25 12:32:18,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:32:18,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:18,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:18,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:18,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:18,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:18,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:18,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:19,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:19,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:23,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:23,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 12:32:23,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 12:32:23,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 12:32:23,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:23,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:23,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:32:23,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 12:32:23,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 12:32:23,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:32:23,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:32:23,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:23,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:23,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:23,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:32:23,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:23,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 12:32:23,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:23,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:23,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:32:23,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:23,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:32:23,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:32:23,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-25 12:32:23,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:23,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:23,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:23,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 12:32:23,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:23,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 12:32:23,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:23,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:23,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:32:23,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:32:23,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:32:23,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:32:23,683 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 12:32:23,684 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1709222652] [2020-09-25 12:32:23,684 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:32:23,684 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 12:32:23,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890027087] [2020-09-25 12:32:23,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 12:32:23,685 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:32:23,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 12:32:23,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:32:23,686 INFO L87 Difference]: Start difference. First operand 292 states and 331 transitions. Second operand 8 states. [2020-09-25 12:32:24,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:32:24,357 INFO L93 Difference]: Finished difference Result 513 states and 581 transitions. [2020-09-25 12:32:24,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 12:32:24,358 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 70 [2020-09-25 12:32:24,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:32:24,362 INFO L225 Difference]: With dead ends: 513 [2020-09-25 12:32:24,363 INFO L226 Difference]: Without dead ends: 416 [2020-09-25 12:32:24,364 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 12:32:24,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2020-09-25 12:32:24,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 339. [2020-09-25 12:32:24,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2020-09-25 12:32:24,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 388 transitions. [2020-09-25 12:32:24,377 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 388 transitions. Word has length 70 [2020-09-25 12:32:24,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:32:24,378 INFO L479 AbstractCegarLoop]: Abstraction has 339 states and 388 transitions. [2020-09-25 12:32:24,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 12:32:24,378 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 388 transitions. [2020-09-25 12:32:24,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 12:32:24,379 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:32:24,380 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 12:32:24,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 12:32:24,380 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:32:24,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:32:24,380 INFO L82 PathProgramCache]: Analyzing trace with hash -656915567, now seen corresponding path program 1 times [2020-09-25 12:32:24,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:32:24,381 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1311297391] [2020-09-25 12:32:24,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:32:24,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:24,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:24,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:24,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:24,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:24,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:24,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:24,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:24,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:28,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:29,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:29,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 12:32:29,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 12:32:29,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 12:32:29,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:29,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:29,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:32:29,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 12:32:29,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 12:32:29,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:29,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:32:29,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:29,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:29,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:29,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:32:29,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:29,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 12:32:29,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:29,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:29,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:32:29,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:29,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:32:29,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:32:29,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-25 12:32:29,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:29,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:29,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:29,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 12:32:29,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:29,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 12:32:29,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:29,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:29,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:32:29,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:32:29,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:32:29,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:32:29,521 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 12:32:29,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1311297391] [2020-09-25 12:32:29,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:32:29,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 12:32:29,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380014879] [2020-09-25 12:32:29,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 12:32:29,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:32:29,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 12:32:29,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-09-25 12:32:29,524 INFO L87 Difference]: Start difference. First operand 339 states and 388 transitions. Second operand 10 states. [2020-09-25 12:32:30,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:32:30,270 INFO L93 Difference]: Finished difference Result 537 states and 609 transitions. [2020-09-25 12:32:30,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 12:32:30,271 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 73 [2020-09-25 12:32:30,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:32:30,276 INFO L225 Difference]: With dead ends: 537 [2020-09-25 12:32:30,276 INFO L226 Difference]: Without dead ends: 440 [2020-09-25 12:32:30,277 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 12:32:30,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2020-09-25 12:32:30,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 360. [2020-09-25 12:32:30,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 360 states. [2020-09-25 12:32:30,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 411 transitions. [2020-09-25 12:32:30,291 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 411 transitions. Word has length 73 [2020-09-25 12:32:30,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:32:30,291 INFO L479 AbstractCegarLoop]: Abstraction has 360 states and 411 transitions. [2020-09-25 12:32:30,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 12:32:30,292 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 411 transitions. [2020-09-25 12:32:30,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-09-25 12:32:30,293 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:32:30,293 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 12:32:30,293 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 12:32:30,294 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:32:30,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:32:30,294 INFO L82 PathProgramCache]: Analyzing trace with hash -1536848059, now seen corresponding path program 1 times [2020-09-25 12:32:30,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:32:30,297 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1484925564] [2020-09-25 12:32:30,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:32:30,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:30,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:30,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:30,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:30,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:30,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:30,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:31,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:31,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:31,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:32,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:35,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:35,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 12:32:35,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 12:32:35,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 12:32:35,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:35,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:35,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:32:35,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 12:32:35,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 12:32:35,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:32:35,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:32:35,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:35,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:35,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:35,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:32:35,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:35,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 12:32:35,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:35,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:35,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:32:35,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:35,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:32:35,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:32:35,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 12:32:35,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:35,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:35,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:35,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 12:32:35,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:35,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 12:32:35,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:35,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:35,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:32:35,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:32:35,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:32:35,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:35,420 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 12:32:35,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1484925564] [2020-09-25 12:32:35,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:32:35,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 12:32:35,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842514378] [2020-09-25 12:32:35,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 12:32:35,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:32:35,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 12:32:35,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:32:35,434 INFO L87 Difference]: Start difference. First operand 360 states and 411 transitions. Second operand 8 states.