/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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 06:52:33,327 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:52:33,330 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:52:33,357 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:52:33,357 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:52:33,358 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:52:33,360 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:52:33,362 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:52:33,363 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:52:33,364 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:52:33,366 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:52:33,367 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:52:33,367 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:52:33,368 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:52:33,369 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:52:33,371 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:52:33,372 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:52:33,373 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:52:33,375 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:52:33,377 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:52:33,379 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:52:33,380 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:52:33,381 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:52:33,382 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:52:33,385 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:52:33,388 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:52:33,388 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:52:33,389 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:52:33,390 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:52:33,391 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:52:33,391 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:52:33,392 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:52:33,393 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:52:33,394 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:52:33,395 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:52:33,395 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:52:33,396 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:52:33,397 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:52:33,397 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:52:33,398 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:52:33,399 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:52:33,400 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 06:52:33,427 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:52:33,427 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:52:33,429 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:52:33,429 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:52:33,429 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:52:33,429 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:52:33,430 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:52:33,430 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:52:33,430 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:52:33,430 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:52:33,430 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:52:33,430 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:52:33,431 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:52:33,431 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:52:33,431 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:52:33,431 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:52:33,431 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:52:33,432 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:52:33,432 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:52:33,432 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:52:33,432 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:52:33,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:52:33,433 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:52:33,433 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:52:33,433 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:52:33,433 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:52:33,434 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:52:33,434 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:52:33,434 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:52:33,434 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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-09-25 06:52:33,863 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:52:33,881 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:52:33,885 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:52:33,887 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:52:33,887 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:52:33,888 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-09-25 06:52:33,981 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ebdce22ee/c42cced06f7f47d08d34895110b19fda/FLAG0ac110387 [2020-09-25 06:52:34,564 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:52:34,565 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-09-25 06:52:34,576 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ebdce22ee/c42cced06f7f47d08d34895110b19fda/FLAG0ac110387 [2020-09-25 06:52:34,841 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ebdce22ee/c42cced06f7f47d08d34895110b19fda [2020-09-25 06:52:34,856 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:52:34,861 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:52:34,862 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:52:34,862 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:52:34,866 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:52:34,867 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:52:34" (1/1) ... [2020-09-25 06:52:34,871 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22589b7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:52:34, skipping insertion in model container [2020-09-25 06:52:34,872 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:52:34" (1/1) ... [2020-09-25 06:52:34,880 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:52:34,907 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:52:35,142 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:52:35,154 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:52:35,280 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:52:35,314 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:52:35,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:52:35 WrapperNode [2020-09-25 06:52:35,315 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:52:35,317 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:52:35,317 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:52:35,317 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:52:35,331 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:52:35" (1/1) ... [2020-09-25 06:52:35,331 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:52:35" (1/1) ... [2020-09-25 06:52:35,344 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:52:35" (1/1) ... [2020-09-25 06:52:35,345 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:52:35" (1/1) ... [2020-09-25 06:52:35,358 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:52:35" (1/1) ... [2020-09-25 06:52:35,365 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:52:35" (1/1) ... [2020-09-25 06:52:35,368 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:52:35" (1/1) ... [2020-09-25 06:52:35,371 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:52:35,372 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:52:35,372 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:52:35,372 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:52:35,373 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:52:35" (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 06:52:35,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:52:35,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:52:35,451 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 06:52:35,452 INFO L138 BoogieDeclarations]: Found implementation of procedure r_strncpy [2020-09-25 06:52:35,452 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_expression_list [2020-09-25 06:52:35,452 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:52:35,452 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:52:35,452 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 06:52:35,452 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2020-09-25 06:52:35,453 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2020-09-25 06:52:35,453 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2020-09-25 06:52:35,453 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2020-09-25 06:52:35,453 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy_ptr [2020-09-25 06:52:35,454 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2020-09-25 06:52:35,454 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2020-09-25 06:52:35,454 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2020-09-25 06:52:35,454 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2020-09-25 06:52:35,454 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2020-09-25 06:52:35,454 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-09-25 06:52:35,455 INFO L130 BoogieDeclarations]: Found specification of procedure isascii [2020-09-25 06:52:35,455 INFO L130 BoogieDeclarations]: Found specification of procedure isspace [2020-09-25 06:52:35,455 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-09-25 06:52:35,455 INFO L130 BoogieDeclarations]: Found specification of procedure strrand [2020-09-25 06:52:35,455 INFO L130 BoogieDeclarations]: Found specification of procedure istrrand [2020-09-25 06:52:35,455 INFO L130 BoogieDeclarations]: Found specification of procedure istrchr [2020-09-25 06:52:35,456 INFO L130 BoogieDeclarations]: Found specification of procedure istrrchr [2020-09-25 06:52:35,456 INFO L130 BoogieDeclarations]: Found specification of procedure istrncmp [2020-09-25 06:52:35,456 INFO L130 BoogieDeclarations]: Found specification of procedure istrstr [2020-09-25 06:52:35,456 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncpy [2020-09-25 06:52:35,456 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcpy [2020-09-25 06:52:35,457 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcat [2020-09-25 06:52:35,457 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncat [2020-09-25 06:52:35,457 INFO L130 BoogieDeclarations]: Found specification of procedure r_memcpy [2020-09-25 06:52:35,457 INFO L130 BoogieDeclarations]: Found specification of procedure parse_expression_list [2020-09-25 06:52:35,457 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 06:52:35,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 06:52:35,458 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 06:52:35,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 06:52:35,458 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:52:35,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:52:35,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:52:35,882 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:52:35,883 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-25 06:52:35,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:52:35 BoogieIcfgContainer [2020-09-25 06:52:35,892 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:52:35,893 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:52:35,893 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:52:35,897 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:52:35,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:52:34" (1/3) ... [2020-09-25 06:52:35,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74d4473c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:52:35, skipping insertion in model container [2020-09-25 06:52:35,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:52:35" (2/3) ... [2020-09-25 06:52:35,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74d4473c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:52:35, skipping insertion in model container [2020-09-25 06:52:35,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:52:35" (3/3) ... [2020-09-25 06:52:35,901 INFO L109 eAbstractionObserver]: Analyzing ICFG verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-09-25 06:52:35,911 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:52:35,922 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:52:35,943 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:52:35,969 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:52:35,969 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:52:35,969 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:52:35,969 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:52:35,970 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:52:35,970 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:52:35,970 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:52:35,970 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:52:35,995 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states. [2020-09-25 06:52:36,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-25 06:52:36,005 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:52:36,006 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 06:52:36,006 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:52:36,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:52:36,014 INFO L82 PathProgramCache]: Analyzing trace with hash 2116113079, now seen corresponding path program 1 times [2020-09-25 06:52:36,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:52:36,027 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [178748226] [2020-09-25 06:52:36,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:52:36,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:52:36,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:52:36,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:52:36,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:52:36,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:52:36,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:52:37,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:52:38,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:52:38,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 06:52:38,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:52:38,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2148 [2020-09-25 06:52:38,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:52:38,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:52:38,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:52:38,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-25 06:52:38,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:52:38,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 06:52:38,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:52:38,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:52:38,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:52:38,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:52:38,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:52:38,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:52:38,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:52:38,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:52:38,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:52:38,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:52:38,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:52:38,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:52:38,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:52:38,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 06:52:38,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:52:38,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:52:38,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:52:38,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 06:52:38,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:52:38,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 06:52:38,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:52:38,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:52:38,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:52:38,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:52:38,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:52:38,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:52:38,484 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 06:52:38,486 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [178748226] [2020-09-25 06:52:38,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:52:38,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 06:52:38,491 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771936090] [2020-09-25 06:52:38,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 06:52:38,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:52:38,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 06:52:38,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 06:52:38,536 INFO L87 Difference]: Start difference. First operand 123 states. Second operand 3 states. [2020-09-25 06:52:38,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:52:38,895 INFO L93 Difference]: Finished difference Result 227 states and 257 transitions. [2020-09-25 06:52:38,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 06:52:38,897 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2020-09-25 06:52:38,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:52:38,910 INFO L225 Difference]: With dead ends: 227 [2020-09-25 06:52:38,910 INFO L226 Difference]: Without dead ends: 102 [2020-09-25 06:52:38,915 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 06:52:38,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-09-25 06:52:38,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2020-09-25 06:52:38,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-09-25 06:52:38,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 111 transitions. [2020-09-25 06:52:38,970 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 111 transitions. Word has length 48 [2020-09-25 06:52:38,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:52:38,970 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 111 transitions. [2020-09-25 06:52:38,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 06:52:38,971 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 111 transitions. [2020-09-25 06:52:38,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-25 06:52:38,973 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:52:38,974 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] [2020-09-25 06:52:38,974 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:52:38,974 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:52:38,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:52:38,975 INFO L82 PathProgramCache]: Analyzing trace with hash 1227098254, now seen corresponding path program 1 times [2020-09-25 06:52:38,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:52:38,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [755170456] [2020-09-25 06:52:38,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:52:38,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:52:39,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:52:39,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:52:39,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:52:39,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:52:39,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:52:40,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:52:40,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:52:41,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:52:43,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:52:43,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-25 06:52:43,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 06:52:43,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 06:52:43,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:52:43,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:52:43,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:52:43,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-25 06:52:43,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 06:52:43,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:52:44,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:52:44,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:52:44,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:52:44,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:52:44,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:52:44,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:52:44,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:52:44,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:52:44,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:52:44,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:52:44,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:52:44,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:52:44,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:52:44,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 06:52:44,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:52:44,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:52:44,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:52:44,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 06:52:44,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:52:44,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 06:52:44,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:52:44,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:52:44,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:52:44,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:52:44,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:52:44,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:52:44,105 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 06:52:44,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [755170456] [2020-09-25 06:52:44,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:52:44,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:52:44,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037948343] [2020-09-25 06:52:44,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:52:44,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:52:44,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:52:44,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:52:44,115 INFO L87 Difference]: Start difference. First operand 102 states and 111 transitions. Second operand 4 states. [2020-09-25 06:52:44,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:52:44,342 INFO L93 Difference]: Finished difference Result 189 states and 208 transitions. [2020-09-25 06:52:44,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 06:52:44,343 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-09-25 06:52:44,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:52:44,345 INFO L225 Difference]: With dead ends: 189 [2020-09-25 06:52:44,345 INFO L226 Difference]: Without dead ends: 103 [2020-09-25 06:52:44,346 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:52:44,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-09-25 06:52:44,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2020-09-25 06:52:44,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-09-25 06:52:44,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 112 transitions. [2020-09-25 06:52:44,357 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 112 transitions. Word has length 60 [2020-09-25 06:52:44,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:52:44,358 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 112 transitions. [2020-09-25 06:52:44,358 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:52:44,358 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 112 transitions. [2020-09-25 06:52:44,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-25 06:52:44,360 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:52:44,361 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 06:52:44,361 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:52:44,361 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:52:44,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:52:44,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1578191403, now seen corresponding path program 1 times [2020-09-25 06:52:44,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:52:44,362 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1307978980] [2020-09-25 06:52:44,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:52:44,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:52:44,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:52:44,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:52:44,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:52:44,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:52:44,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:52:45,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:52:46,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:52:46,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 06:52:46,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:52:46,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2275 [2020-09-25 06:52:46,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:52:46,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:52:46,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:52:46,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 06:52:46,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 06:52:46,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:52:46,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:52:46,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:52:46,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:52:46,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:52:46,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:52:46,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:52:46,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 06:52:46,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:52:46,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:52:46,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:52:46,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:52:46,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:52:46,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:52:46,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-25 06:52:46,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:52:46,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:52:46,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:52:46,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 06:52:46,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:52:46,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 06:52:46,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:52:46,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:52:46,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:52:46,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:52:46,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 06:52:46,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:52:46,798 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 06:52:46,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1307978980] [2020-09-25 06:52:46,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:52:46,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 06:52:46,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504868450] [2020-09-25 06:52:46,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:52:46,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:52:46,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:52:46,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:52:46,801 INFO L87 Difference]: Start difference. First operand 103 states and 112 transitions. Second operand 8 states. [2020-09-25 06:52:47,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:52:47,271 INFO L93 Difference]: Finished difference Result 208 states and 232 transitions. [2020-09-25 06:52:47,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 06:52:47,272 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 62 [2020-09-25 06:52:47,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:52:47,278 INFO L225 Difference]: With dead ends: 208 [2020-09-25 06:52:47,278 INFO L226 Difference]: Without dead ends: 206 [2020-09-25 06:52:47,279 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-09-25 06:52:47,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-09-25 06:52:47,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 163. [2020-09-25 06:52:47,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-09-25 06:52:47,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 183 transitions. [2020-09-25 06:52:47,300 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 183 transitions. Word has length 62 [2020-09-25 06:52:47,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:52:47,301 INFO L479 AbstractCegarLoop]: Abstraction has 163 states and 183 transitions. [2020-09-25 06:52:47,301 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 06:52:47,301 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 183 transitions. [2020-09-25 06:52:47,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-25 06:52:47,305 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:52:47,305 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 06:52:47,305 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:52:47,305 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:52:47,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:52:47,306 INFO L82 PathProgramCache]: Analyzing trace with hash 1116699365, now seen corresponding path program 1 times [2020-09-25 06:52:47,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:52:47,306 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1334362448] [2020-09-25 06:52:47,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:52:47,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:52:47,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:52:47,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:52:47,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:52:47,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:52:47,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:52:47,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:52:50,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:52:50,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:52:50,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:52:50,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:52:50,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:52:52,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:52:52,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 06:52:52,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 06:52:52,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 06:52:52,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:52:52,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:52:52,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:52:52,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 06:52:52,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 06:52:52,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:52:52,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:52:52,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:52:52,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:52:52,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:52:52,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:52:52,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:52:52,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:52:52,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:52:52,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:52:52,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:52:52,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:52:52,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:52:52,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:52:52,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 06:52:52,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:52:52,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:52:52,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:52:52,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 06:52:52,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:52:52,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:52:52,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:52:52,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:52:52,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:52:52,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:52:52,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 06:52:52,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:52:52,490 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 06:52:52,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1334362448] [2020-09-25 06:52:52,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:52:52,491 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 06:52:52,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288171040] [2020-09-25 06:52:52,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 06:52:52,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:52:52,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 06:52:52,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-25 06:52:52,494 INFO L87 Difference]: Start difference. First operand 163 states and 183 transitions. Second operand 10 states. [2020-09-25 06:52:53,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:52:53,166 INFO L93 Difference]: Finished difference Result 329 states and 370 transitions. [2020-09-25 06:52:53,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 06:52:53,167 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 65 [2020-09-25 06:52:53,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:52:53,173 INFO L225 Difference]: With dead ends: 329 [2020-09-25 06:52:53,173 INFO L226 Difference]: Without dead ends: 239 [2020-09-25 06:52:53,174 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2020-09-25 06:52:53,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2020-09-25 06:52:53,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 191. [2020-09-25 06:52:53,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-09-25 06:52:53,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 215 transitions. [2020-09-25 06:52:53,189 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 215 transitions. Word has length 65 [2020-09-25 06:52:53,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:52:53,189 INFO L479 AbstractCegarLoop]: Abstraction has 191 states and 215 transitions. [2020-09-25 06:52:53,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 06:52:53,189 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 215 transitions. [2020-09-25 06:52:53,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-25 06:52:53,191 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:52:53,192 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 06:52:53,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:52:53,192 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:52:53,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:52:53,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1492663361, now seen corresponding path program 1 times [2020-09-25 06:52:53,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:52:53,193 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [398976749] [2020-09-25 06:52:53,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:52:53,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:52:53,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:52:53,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:52:53,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:52:53,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:52:53,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:52:53,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:52:53,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:52:54,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:52:55,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:52:55,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:52:55,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:52:55,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:52:56,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:52:56,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 06:52:56,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 06:52:56,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3356 [2020-09-25 06:52:56,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:52:56,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:52:56,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:52:56,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 06:52:56,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 06:52:56,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:52:56,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:52:56,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:52:56,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:52:56,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:52:56,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:52:56,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:52:56,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 06:52:56,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:52:56,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:52:56,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:52:56,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:52:56,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:52:56,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:52:56,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 06:52:56,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:52:56,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:52:56,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:52:56,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 06:52:56,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:52:56,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:52:56,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:52:56,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:52:56,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:52:56,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:52:56,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:52:56,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:52:56,623 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 06:52:56,624 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [398976749] [2020-09-25 06:52:56,624 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:52:56,624 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:52:56,624 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361257657] [2020-09-25 06:52:56,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:52:56,625 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:52:56,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:52:56,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:52:56,626 INFO L87 Difference]: Start difference. First operand 191 states and 215 transitions. Second operand 4 states. [2020-09-25 06:52:56,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:52:56,811 INFO L93 Difference]: Finished difference Result 280 states and 315 transitions. [2020-09-25 06:52:56,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 06:52:56,812 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 65 [2020-09-25 06:52:56,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:52:56,814 INFO L225 Difference]: With dead ends: 280 [2020-09-25 06:52:56,814 INFO L226 Difference]: Without dead ends: 192 [2020-09-25 06:52:56,815 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:52:56,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-09-25 06:52:56,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2020-09-25 06:52:56,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-09-25 06:52:56,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 215 transitions. [2020-09-25 06:52:56,834 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 215 transitions. Word has length 65 [2020-09-25 06:52:56,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:52:56,835 INFO L479 AbstractCegarLoop]: Abstraction has 192 states and 215 transitions. [2020-09-25 06:52:56,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:52:56,835 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 215 transitions. [2020-09-25 06:52:56,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-09-25 06:52:56,841 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:52:56,841 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 06:52:56,842 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:52:56,842 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:52:56,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:52:56,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1905607281, now seen corresponding path program 1 times [2020-09-25 06:52:56,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:52:56,843 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1931143470] [2020-09-25 06:52:56,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:52:56,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:52:56,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:52:56,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:52:56,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:52:56,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:52:56,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:52:57,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:52:57,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:52:58,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:52:58,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:01,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:01,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:01,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:01,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:01,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 06:53:01,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 06:53:01,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 06:53:01,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:01,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:01,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:53:01,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 06:53:01,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 06:53:01,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:01,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:53:01,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:01,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:01,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:01,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:53:01,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:01,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 06:53:01,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:01,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:01,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:53:01,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:01,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:53:01,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:01,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-25 06:53:01,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:01,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:01,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:01,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 06:53:01,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:01,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:53:01,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:01,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:01,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:53:01,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:53:01,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:53:01,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:01,944 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 06:53:01,944 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1931143470] [2020-09-25 06:53:01,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:53:01,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 06:53:01,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409124456] [2020-09-25 06:53:01,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 06:53:01,946 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:53:01,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 06:53:01,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:53:01,946 INFO L87 Difference]: Start difference. First operand 192 states and 215 transitions. Second operand 6 states. [2020-09-25 06:53:02,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:53:02,220 INFO L93 Difference]: Finished difference Result 344 states and 386 transitions. [2020-09-25 06:53:02,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 06:53:02,220 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2020-09-25 06:53:02,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:53:02,223 INFO L225 Difference]: With dead ends: 344 [2020-09-25 06:53:02,223 INFO L226 Difference]: Without dead ends: 256 [2020-09-25 06:53:02,224 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:53:02,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-09-25 06:53:02,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 193. [2020-09-25 06:53:02,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-09-25 06:53:02,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 217 transitions. [2020-09-25 06:53:02,240 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 217 transitions. Word has length 66 [2020-09-25 06:53:02,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:53:02,240 INFO L479 AbstractCegarLoop]: Abstraction has 193 states and 217 transitions. [2020-09-25 06:53:02,240 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 06:53:02,240 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 217 transitions. [2020-09-25 06:53:02,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 06:53:02,243 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:53:02,243 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:53:02,243 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 06:53:02,244 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:53:02,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:53:02,245 INFO L82 PathProgramCache]: Analyzing trace with hash 1560412514, now seen corresponding path program 1 times [2020-09-25 06:53:02,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:53:02,246 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1484961545] [2020-09-25 06:53:02,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:53:02,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:02,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:02,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:02,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:02,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:02,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:02,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:03,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:05,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:05,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:05,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:07,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:07,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 06:53:07,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 06:53:07,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 06:53:07,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:07,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:07,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:53:07,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 06:53:07,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 06:53:07,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:07,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:53:07,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:07,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:07,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:07,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:53:07,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:07,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 06:53:07,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:07,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:07,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:53:07,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:07,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:53:07,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:07,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-25 06:53:07,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:07,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:07,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:07,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 06:53:07,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:07,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:53:07,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:07,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:07,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:53:07,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:53:07,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:53:07,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:07,360 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 06:53:07,361 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1484961545] [2020-09-25 06:53:07,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:53:07,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 06:53:07,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032335672] [2020-09-25 06:53:07,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:53:07,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:53:07,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:53:07,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:53:07,363 INFO L87 Difference]: Start difference. First operand 193 states and 217 transitions. Second operand 8 states. [2020-09-25 06:53:07,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:53:07,871 INFO L93 Difference]: Finished difference Result 361 states and 403 transitions. [2020-09-25 06:53:07,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 06:53:07,871 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 67 [2020-09-25 06:53:07,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:53:07,874 INFO L225 Difference]: With dead ends: 361 [2020-09-25 06:53:07,874 INFO L226 Difference]: Without dead ends: 263 [2020-09-25 06:53:07,875 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 06:53:07,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2020-09-25 06:53:07,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 203. [2020-09-25 06:53:07,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-09-25 06:53:07,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 228 transitions. [2020-09-25 06:53:07,883 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 228 transitions. Word has length 67 [2020-09-25 06:53:07,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:53:07,883 INFO L479 AbstractCegarLoop]: Abstraction has 203 states and 228 transitions. [2020-09-25 06:53:07,884 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 06:53:07,884 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 228 transitions. [2020-09-25 06:53:07,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 06:53:07,885 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:53:07,885 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:53:07,885 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 06:53:07,885 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:53:07,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:53:07,886 INFO L82 PathProgramCache]: Analyzing trace with hash -1492389340, now seen corresponding path program 1 times [2020-09-25 06:53:07,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:53:07,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [152919165] [2020-09-25 06:53:07,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:53:07,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:07,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:07,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:07,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:08,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:08,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:08,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:08,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:09,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:09,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:09,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:09,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 06:53:09,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 06:53:09,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1891 [2020-09-25 06:53:09,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:09,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:09,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:53:09,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 06:53:09,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 06:53:09,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:09,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:53:09,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:09,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:09,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:09,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:53:09,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:09,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 06:53:09,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:09,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:09,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:53:09,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:09,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:53:09,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:09,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-25 06:53:09,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:09,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:09,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:09,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 06:53:09,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:09,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:53:09,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:09,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:09,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:53:09,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:53:09,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:53:09,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:09,898 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 06:53:09,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [152919165] [2020-09-25 06:53:09,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:53:09,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 06:53:09,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327059278] [2020-09-25 06:53:09,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:53:09,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:53:09,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:53:09,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:53:09,901 INFO L87 Difference]: Start difference. First operand 203 states and 228 transitions. Second operand 8 states. [2020-09-25 06:53:10,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:53:10,268 INFO L93 Difference]: Finished difference Result 340 states and 378 transitions. [2020-09-25 06:53:10,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 06:53:10,269 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 67 [2020-09-25 06:53:10,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:53:10,271 INFO L225 Difference]: With dead ends: 340 [2020-09-25 06:53:10,271 INFO L226 Difference]: Without dead ends: 239 [2020-09-25 06:53:10,272 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 06:53:10,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2020-09-25 06:53:10,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 202. [2020-09-25 06:53:10,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-09-25 06:53:10,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 226 transitions. [2020-09-25 06:53:10,279 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 226 transitions. Word has length 67 [2020-09-25 06:53:10,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:53:10,280 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 226 transitions. [2020-09-25 06:53:10,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 06:53:10,280 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 226 transitions. [2020-09-25 06:53:10,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-09-25 06:53:10,281 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:53:10,281 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:53:10,281 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 06:53:10,281 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:53:10,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:53:10,282 INFO L82 PathProgramCache]: Analyzing trace with hash -508291602, now seen corresponding path program 1 times [2020-09-25 06:53:10,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:53:10,282 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1706037790] [2020-09-25 06:53:10,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:53:10,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:10,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:10,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:10,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:10,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:12,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:14,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:14,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 06:53:14,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 06:53:14,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4415 [2020-09-25 06:53:14,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:14,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:14,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:53:14,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-09-25 06:53:14,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 06:53:14,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:14,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:53:14,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:14,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:14,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:14,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:53:14,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:14,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 06:53:14,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:14,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:14,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:53:14,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:14,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:53:14,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:14,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-25 06:53:14,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:14,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:14,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:14,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 06:53:14,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:14,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:53:14,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:14,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:14,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:53:14,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:53:14,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:53:14,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:14,758 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 06:53:14,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1706037790] [2020-09-25 06:53:14,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:53:14,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 06:53:14,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935024851] [2020-09-25 06:53:14,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:53:14,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:53:14,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:53:14,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:53:14,761 INFO L87 Difference]: Start difference. First operand 202 states and 226 transitions. Second operand 5 states. [2020-09-25 06:53:14,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:53:14,995 INFO L93 Difference]: Finished difference Result 315 states and 352 transitions. [2020-09-25 06:53:14,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:53:14,996 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2020-09-25 06:53:14,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:53:14,999 INFO L225 Difference]: With dead ends: 315 [2020-09-25 06:53:14,999 INFO L226 Difference]: Without dead ends: 220 [2020-09-25 06:53:15,000 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:53:15,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-09-25 06:53:15,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 208. [2020-09-25 06:53:15,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-09-25 06:53:15,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 232 transitions. [2020-09-25 06:53:15,011 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 232 transitions. Word has length 68 [2020-09-25 06:53:15,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:53:15,011 INFO L479 AbstractCegarLoop]: Abstraction has 208 states and 232 transitions. [2020-09-25 06:53:15,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:53:15,012 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 232 transitions. [2020-09-25 06:53:15,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-25 06:53:15,013 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:53:15,013 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:53:15,014 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 06:53:15,014 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:53:15,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:53:15,014 INFO L82 PathProgramCache]: Analyzing trace with hash 122758570, now seen corresponding path program 1 times [2020-09-25 06:53:15,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:53:15,015 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1940946782] [2020-09-25 06:53:15,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:53:15,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:15,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:15,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:15,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:15,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:15,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:15,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:16,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:19,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:19,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:19,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:20,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:20,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 06:53:20,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 06:53:20,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 06:53:20,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:20,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:20,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:53:20,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 06:53:20,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 06:53:20,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:20,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:53:20,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:20,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:20,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:20,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:53:20,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:20,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 06:53:20,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:20,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:20,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:53:20,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:20,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:53:20,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:20,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-25 06:53:20,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:20,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:20,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:20,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 06:53:20,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:20,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:53:20,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:20,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:20,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:53:20,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:53:20,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:53:20,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:20,128 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 06:53:20,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1940946782] [2020-09-25 06:53:20,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:53:20,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 06:53:20,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032845199] [2020-09-25 06:53:20,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:53:20,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:53:20,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:53:20,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:53:20,131 INFO L87 Difference]: Start difference. First operand 208 states and 232 transitions. Second operand 8 states. [2020-09-25 06:53:20,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:53:20,631 INFO L93 Difference]: Finished difference Result 631 states and 714 transitions. [2020-09-25 06:53:20,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 06:53:20,631 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 70 [2020-09-25 06:53:20,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:53:20,636 INFO L225 Difference]: With dead ends: 631 [2020-09-25 06:53:20,636 INFO L226 Difference]: Without dead ends: 506 [2020-09-25 06:53:20,639 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 06:53:20,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2020-09-25 06:53:20,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 291. [2020-09-25 06:53:20,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2020-09-25 06:53:20,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 330 transitions. [2020-09-25 06:53:20,661 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 330 transitions. Word has length 70 [2020-09-25 06:53:20,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:53:20,663 INFO L479 AbstractCegarLoop]: Abstraction has 291 states and 330 transitions. [2020-09-25 06:53:20,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 06:53:20,663 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 330 transitions. [2020-09-25 06:53:20,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-25 06:53:20,665 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:53:20,665 INFO L422 BasicCegarLoop]: trace histogram [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 06:53:20,665 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 06:53:20,666 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:53:20,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:53:20,666 INFO L82 PathProgramCache]: Analyzing trace with hash 588909148, now seen corresponding path program 1 times [2020-09-25 06:53:20,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:53:20,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [100036503] [2020-09-25 06:53:20,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:53:20,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:20,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:20,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:20,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:20,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:21,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:21,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:21,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:21,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:24,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:24,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:24,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:24,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:25,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:25,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 06:53:25,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 06:53:25,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 06:53:25,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:25,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:25,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:53:25,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 06:53:25,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 06:53:25,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:25,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:53:25,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:25,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:25,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:25,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:53:25,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:25,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 06:53:25,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:25,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:25,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:53:25,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:25,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:53:25,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:25,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 06:53:25,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:25,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:25,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:25,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 06:53:25,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:25,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 06:53:25,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:25,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:25,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:25,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:25,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 06:53:25,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:53:25,855 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 06:53:25,855 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [100036503] [2020-09-25 06:53:25,856 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:53:25,856 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 06:53:25,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164223799] [2020-09-25 06:53:25,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 06:53:25,857 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:53:25,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 06:53:25,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-25 06:53:25,859 INFO L87 Difference]: Start difference. First operand 291 states and 330 transitions. Second operand 10 states. [2020-09-25 06:53:26,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:53:26,524 INFO L93 Difference]: Finished difference Result 438 states and 496 transitions. [2020-09-25 06:53:26,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 06:53:26,524 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 72 [2020-09-25 06:53:26,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:53:26,528 INFO L225 Difference]: With dead ends: 438 [2020-09-25 06:53:26,529 INFO L226 Difference]: Without dead ends: 436 [2020-09-25 06:53:26,529 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2020-09-25 06:53:26,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2020-09-25 06:53:26,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 345. [2020-09-25 06:53:26,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2020-09-25 06:53:26,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 395 transitions. [2020-09-25 06:53:26,550 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 395 transitions. Word has length 72 [2020-09-25 06:53:26,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:53:26,550 INFO L479 AbstractCegarLoop]: Abstraction has 345 states and 395 transitions. [2020-09-25 06:53:26,550 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 06:53:26,550 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 395 transitions. [2020-09-25 06:53:26,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-09-25 06:53:26,551 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:53:26,551 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:53:26,551 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 06:53:26,552 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:53:26,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:53:26,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1474625812, now seen corresponding path program 1 times [2020-09-25 06:53:26,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:53:26,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1207986039] [2020-09-25 06:53:26,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:53:26,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:26,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:26,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:26,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:26,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:26,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking...