/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 11:11:21,587 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 11:11:21,589 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 11:11:21,634 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 11:11:21,634 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 11:11:21,645 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 11:11:21,647 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 11:11:21,648 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 11:11:21,652 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 11:11:21,654 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 11:11:21,656 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 11:11:21,658 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 11:11:21,658 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 11:11:21,660 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 11:11:21,664 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 11:11:21,666 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 11:11:21,667 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 11:11:21,668 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 11:11:21,671 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 11:11:21,675 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 11:11:21,679 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 11:11:21,679 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 11:11:21,680 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 11:11:21,681 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 11:11:21,686 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 11:11:21,686 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 11:11:21,687 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 11:11:21,690 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 11:11:21,690 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 11:11:21,691 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 11:11:21,691 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 11:11:21,692 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 11:11:21,692 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 11:11:21,693 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 11:11:21,694 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 11:11:21,694 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 11:11:21,695 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 11:11:21,695 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 11:11:21,695 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 11:11:21,696 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 11:11:21,697 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 11:11:21,697 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 11:11:21,718 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 11:11:21,718 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 11:11:21,719 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 11:11:21,720 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 11:11:21,720 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 11:11:21,720 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 11:11:21,720 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 11:11:21,721 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 11:11:21,721 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 11:11:21,721 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 11:11:21,721 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 11:11:21,721 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 11:11:21,722 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 11:11:21,722 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 11:11:21,722 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 11:11:21,722 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 11:11:21,722 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 11:11:21,723 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 11:11:21,723 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 11:11:21,723 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 11:11:21,723 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 11:11:21,724 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 11:11:21,724 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 11:11:21,724 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 11:11:21,724 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 11:11:21,725 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 11:11:21,725 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 11:11:21,725 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 11:11:21,725 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 11:11:21,725 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 11:11:22,014 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 11:11:22,025 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 11:11:22,029 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 11:11:22,030 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 11:11:22,030 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 11:11:22,031 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i [2020-10-13 11:11:22,109 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef4f747a6/829cf67e74ea464fa08f488b08476d94/FLAG31675f605 [2020-10-13 11:11:22,522 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 11:11:22,523 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i [2020-10-13 11:11:22,533 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef4f747a6/829cf67e74ea464fa08f488b08476d94/FLAG31675f605 [2020-10-13 11:11:22,874 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef4f747a6/829cf67e74ea464fa08f488b08476d94 [2020-10-13 11:11:22,882 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 11:11:22,884 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 11:11:22,885 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 11:11:22,885 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 11:11:22,888 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 11:11:22,889 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:11:22" (1/1) ... [2020-10-13 11:11:22,892 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45d53c40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:11:22, skipping insertion in model container [2020-10-13 11:11:22,892 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:11:22" (1/1) ... [2020-10-13 11:11:22,900 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 11:11:22,918 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 11:11:23,095 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 11:11:23,104 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 11:11:23,209 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 11:11:23,231 INFO L208 MainTranslator]: Completed translation [2020-10-13 11:11:23,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:11:23 WrapperNode [2020-10-13 11:11:23,232 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 11:11:23,233 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 11:11:23,233 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 11:11:23,233 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 11:11:23,246 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:11:23" (1/1) ... [2020-10-13 11:11:23,247 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:11:23" (1/1) ... [2020-10-13 11:11:23,258 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:11:23" (1/1) ... [2020-10-13 11:11:23,258 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:11:23" (1/1) ... [2020-10-13 11:11:23,270 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:11:23" (1/1) ... [2020-10-13 11:11:23,280 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:11:23" (1/1) ... [2020-10-13 11:11:23,286 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:11:23" (1/1) ... [2020-10-13 11:11:23,291 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 11:11:23,292 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 11:11:23,292 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 11:11:23,295 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 11:11:23,296 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:11:23" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 11:11:23,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 11:11:23,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 11:11:23,383 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-13 11:11:23,383 INFO L138 BoogieDeclarations]: Found implementation of procedure r_strncpy [2020-10-13 11:11:23,384 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_expression_list [2020-10-13 11:11:23,384 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 11:11:23,384 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 11:11:23,386 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 11:11:23,386 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-13 11:11:23,386 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2020-10-13 11:11:23,386 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2020-10-13 11:11:23,386 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2020-10-13 11:11:23,386 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2020-10-13 11:11:23,387 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy_ptr [2020-10-13 11:11:23,387 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2020-10-13 11:11:23,389 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2020-10-13 11:11:23,389 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2020-10-13 11:11:23,389 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2020-10-13 11:11:23,389 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2020-10-13 11:11:23,390 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-10-13 11:11:23,390 INFO L130 BoogieDeclarations]: Found specification of procedure isascii [2020-10-13 11:11:23,390 INFO L130 BoogieDeclarations]: Found specification of procedure isspace [2020-10-13 11:11:23,390 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-10-13 11:11:23,390 INFO L130 BoogieDeclarations]: Found specification of procedure strrand [2020-10-13 11:11:23,390 INFO L130 BoogieDeclarations]: Found specification of procedure istrrand [2020-10-13 11:11:23,391 INFO L130 BoogieDeclarations]: Found specification of procedure istrchr [2020-10-13 11:11:23,391 INFO L130 BoogieDeclarations]: Found specification of procedure istrrchr [2020-10-13 11:11:23,391 INFO L130 BoogieDeclarations]: Found specification of procedure istrncmp [2020-10-13 11:11:23,391 INFO L130 BoogieDeclarations]: Found specification of procedure istrstr [2020-10-13 11:11:23,391 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncpy [2020-10-13 11:11:23,391 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcpy [2020-10-13 11:11:23,391 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcat [2020-10-13 11:11:23,392 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncat [2020-10-13 11:11:23,392 INFO L130 BoogieDeclarations]: Found specification of procedure r_memcpy [2020-10-13 11:11:23,392 INFO L130 BoogieDeclarations]: Found specification of procedure parse_expression_list [2020-10-13 11:11:23,392 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 11:11:23,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 11:11:23,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 11:11:23,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 11:11:23,393 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 11:11:23,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 11:11:23,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 11:11:23,846 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 11:11:23,847 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-13 11:11:23,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:11:23 BoogieIcfgContainer [2020-10-13 11:11:23,851 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 11:11:23,852 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 11:11:23,853 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 11:11:23,856 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 11:11:23,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:11:22" (1/3) ... [2020-10-13 11:11:23,858 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@495a6797 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:11:23, skipping insertion in model container [2020-10-13 11:11:23,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:11:23" (2/3) ... [2020-10-13 11:11:23,858 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@495a6797 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:11:23, skipping insertion in model container [2020-10-13 11:11:23,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:11:23" (3/3) ... [2020-10-13 11:11:23,860 INFO L109 eAbstractionObserver]: Analyzing ICFG veris.c_OpenSER_cases1_stripFullBoth_arr.i [2020-10-13 11:11:23,871 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 11:11:23,878 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 11:11:23,893 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 11:11:23,919 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 11:11:23,920 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 11:11:23,920 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 11:11:23,920 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 11:11:23,920 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 11:11:23,920 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 11:11:23,921 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 11:11:23,921 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 11:11:23,942 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2020-10-13 11:11:23,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-13 11:11:23,949 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:11:23,950 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] [2020-10-13 11:11:23,951 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:11:23,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:11:23,957 INFO L82 PathProgramCache]: Analyzing trace with hash -1663477819, now seen corresponding path program 1 times [2020-10-13 11:11:23,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:11:23,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1152957160] [2020-10-13 11:11:23,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:11:24,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:11:24,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:24,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:24,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:24,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:24,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:24,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:25,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:25,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:27,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:11:27,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 11:11:27,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 11:11:27,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3545 [2020-10-13 11:11:27,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:11:27,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:11:27,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 11:11:27,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:11:27,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-13 11:11:27,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:11:27,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:11:27,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:27,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:11:27,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:11:27,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:11:27,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 11:11:27,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:11:27,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:11:27,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:11:27,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:11:27,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:11:27,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 11:11:27,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:11:27,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:27,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:11:27,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:11:27,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:11:27,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:11:27,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:11:27,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:11:27,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 11:11:27,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:11:27,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:11:27,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:11:27,781 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1152957160] [2020-10-13 11:11:27,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:11:27,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 11:11:27,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098652628] [2020-10-13 11:11:27,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 11:11:27,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:11:27,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 11:11:27,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 11:11:27,815 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 3 states. [2020-10-13 11:11:28,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:11:28,006 INFO L93 Difference]: Finished difference Result 102 states and 138 transitions. [2020-10-13 11:11:28,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 11:11:28,008 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-10-13 11:11:28,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:11:28,018 INFO L225 Difference]: With dead ends: 102 [2020-10-13 11:11:28,018 INFO L226 Difference]: Without dead ends: 47 [2020-10-13 11:11:28,022 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 [2020-10-13 11:11:28,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-13 11:11:28,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-10-13 11:11:28,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-13 11:11:28,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 57 transitions. [2020-10-13 11:11:28,064 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 57 transitions. Word has length 32 [2020-10-13 11:11:28,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:11:28,065 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 57 transitions. [2020-10-13 11:11:28,065 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 11:11:28,065 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 57 transitions. [2020-10-13 11:11:28,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-13 11:11:28,066 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:11:28,067 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] [2020-10-13 11:11:28,067 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 11:11:28,067 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:11:28,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:11:28,068 INFO L82 PathProgramCache]: Analyzing trace with hash 1140955694, now seen corresponding path program 1 times [2020-10-13 11:11:28,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:11:28,068 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2000627952] [2020-10-13 11:11:28,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:11:28,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:11:28,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:28,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:28,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:28,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:28,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:28,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:28,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:28,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:28,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:28,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:29,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:32,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:32,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:33,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:33,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:11:33,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-13 11:11:33,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 11:11:33,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 11:11:33,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:11:33,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:11:33,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-13 11:11:33,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 11:11:33,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:11:33,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:11:33,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:11:33,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:33,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:11:33,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:11:33,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:11:33,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:11:33,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:11:33,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:11:33,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:11:33,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:11:33,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:11:33,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 11:11:33,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:11:33,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:33,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:11:33,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:11:33,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:11:33,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 11:11:33,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:11:33,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:11:33,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 11:11:33,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:11:33,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:11:33,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:11:33,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2000627952] [2020-10-13 11:11:33,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:11:33,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 11:11:33,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764497909] [2020-10-13 11:11:33,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 11:11:33,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:11:33,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 11:11:33,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 11:11:33,151 INFO L87 Difference]: Start difference. First operand 47 states and 57 transitions. Second operand 4 states. [2020-10-13 11:11:33,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:11:33,292 INFO L93 Difference]: Finished difference Result 83 states and 103 transitions. [2020-10-13 11:11:33,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 11:11:33,293 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-10-13 11:11:33,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:11:33,295 INFO L225 Difference]: With dead ends: 83 [2020-10-13 11:11:33,295 INFO L226 Difference]: Without dead ends: 48 [2020-10-13 11:11:33,296 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 [2020-10-13 11:11:33,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-13 11:11:33,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-10-13 11:11:33,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-13 11:11:33,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 58 transitions. [2020-10-13 11:11:33,312 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 58 transitions. Word has length 36 [2020-10-13 11:11:33,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:11:33,313 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 58 transitions. [2020-10-13 11:11:33,314 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 11:11:33,314 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 58 transitions. [2020-10-13 11:11:33,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-13 11:11:33,316 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:11:33,316 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] [2020-10-13 11:11:33,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 11:11:33,317 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:11:33,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:11:33,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1359810412, now seen corresponding path program 1 times [2020-10-13 11:11:33,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:11:33,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2096075912] [2020-10-13 11:11:33,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:11:33,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:11:33,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:33,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:33,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:33,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:33,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:33,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:33,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:33,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:34,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:34,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:34,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:34,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:37,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:11:37,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-13 11:11:37,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 11:11:37,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3887 [2020-10-13 11:11:37,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:11:37,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:11:37,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 11:11:37,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 11:11:37,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:11:37,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:11:37,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:11:37,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:37,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:11:37,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:11:37,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:11:37,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 11:11:37,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:11:37,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:11:37,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:11:37,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:11:37,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-13 11:11:37,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 11:11:37,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:11:37,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:37,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:11:37,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:11:37,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:11:37,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:11:37,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:11:37,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:11:37,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 11:11:37,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:11:37,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:11:37,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:11:37,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2096075912] [2020-10-13 11:11:37,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:11:37,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 11:11:37,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796037823] [2020-10-13 11:11:37,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 11:11:37,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:11:37,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 11:11:37,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 11:11:37,326 INFO L87 Difference]: Start difference. First operand 48 states and 58 transitions. Second operand 4 states. [2020-10-13 11:11:37,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:11:37,498 INFO L93 Difference]: Finished difference Result 90 states and 110 transitions. [2020-10-13 11:11:37,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 11:11:37,499 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-10-13 11:11:37,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:11:37,501 INFO L225 Difference]: With dead ends: 90 [2020-10-13 11:11:37,502 INFO L226 Difference]: Without dead ends: 50 [2020-10-13 11:11:37,503 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 [2020-10-13 11:11:37,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-13 11:11:37,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-10-13 11:11:37,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-13 11:11:37,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 59 transitions. [2020-10-13 11:11:37,519 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 59 transitions. Word has length 36 [2020-10-13 11:11:37,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:11:37,519 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 59 transitions. [2020-10-13 11:11:37,520 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 11:11:37,520 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 59 transitions. [2020-10-13 11:11:37,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-13 11:11:37,523 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:11:37,523 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] [2020-10-13 11:11:37,524 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 11:11:37,524 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:11:37,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:11:37,524 INFO L82 PathProgramCache]: Analyzing trace with hash 446687854, now seen corresponding path program 1 times [2020-10-13 11:11:37,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:11:37,525 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1298230621] [2020-10-13 11:11:37,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:11:37,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:11:37,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:37,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:37,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:37,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:37,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:37,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:37,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:38,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:39,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:39,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:39,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:39,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:42,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:11:42,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-13 11:11:42,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 11:11:42,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 11:11:42,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:11:42,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 11:11:42,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 11:11:42,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 11:11:42,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:11:42,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:11:42,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:11:42,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:42,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:11:42,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:11:42,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:11:42,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:11:42,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:11:42,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:11:42,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:11:42,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:11:42,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:11:42,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 11:11:42,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:11:42,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:42,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:11:42,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:11:42,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:11:42,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:11:42,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:11:42,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:11:42,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 11:11:42,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:11:42,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:11:42,613 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:11:42,614 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1298230621] [2020-10-13 11:11:42,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 11:11:42,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 11:11:42,615 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200571274] [2020-10-13 11:11:42,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 11:11:42,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:11:42,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 11:11:42,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 11:11:42,618 INFO L87 Difference]: Start difference. First operand 49 states and 59 transitions. Second operand 5 states. [2020-10-13 11:11:42,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:11:42,749 INFO L93 Difference]: Finished difference Result 92 states and 112 transitions. [2020-10-13 11:11:42,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 11:11:42,749 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2020-10-13 11:11:42,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:11:42,750 INFO L225 Difference]: With dead ends: 92 [2020-10-13 11:11:42,750 INFO L226 Difference]: Without dead ends: 52 [2020-10-13 11:11:42,751 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 11:11:42,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-13 11:11:42,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-10-13 11:11:42,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-13 11:11:42,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 61 transitions. [2020-10-13 11:11:42,765 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 61 transitions. Word has length 38 [2020-10-13 11:11:42,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:11:42,765 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 61 transitions. [2020-10-13 11:11:42,765 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 11:11:42,766 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 61 transitions. [2020-10-13 11:11:42,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-13 11:11:42,766 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:11:42,767 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] [2020-10-13 11:11:42,767 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 11:11:42,767 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:11:42,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:11:42,768 INFO L82 PathProgramCache]: Analyzing trace with hash -890762000, now seen corresponding path program 2 times [2020-10-13 11:11:42,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:11:42,772 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2055173253] [2020-10-13 11:11:42,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:11:42,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:11:42,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:42,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:42,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:42,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:42,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:42,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:42,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:42,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:44,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:44,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:44,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:44,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:47,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:11:47,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-13 11:11:47,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 11:11:47,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 11:11:47,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:11:47,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:11:47,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 11:11:47,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 11:11:47,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:11:47,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:11:47,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:11:47,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:47,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:11:47,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:11:47,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:11:47,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:11:47,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:11:47,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:11:47,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:11:47,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:11:47,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:11:47,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 11:11:47,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:11:47,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:47,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:11:47,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:11:47,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:11:47,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:11:47,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:11:47,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:11:47,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 11:11:47,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:11:47,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:11:47,836 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-13 11:11:47,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2055173253] [2020-10-13 11:11:47,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:11:47,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 11:11:47,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15881880] [2020-10-13 11:11:47,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 11:11:47,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:11:47,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 11:11:47,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 11:11:47,839 INFO L87 Difference]: Start difference. First operand 51 states and 61 transitions. Second operand 6 states. [2020-10-13 11:11:48,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:11:48,052 INFO L93 Difference]: Finished difference Result 115 states and 146 transitions. [2020-10-13 11:11:48,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 11:11:48,053 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2020-10-13 11:11:48,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:11:48,056 INFO L225 Difference]: With dead ends: 115 [2020-10-13 11:11:48,057 INFO L226 Difference]: Without dead ends: 79 [2020-10-13 11:11:48,057 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 [2020-10-13 11:11:48,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-13 11:11:48,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 59. [2020-10-13 11:11:48,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-13 11:11:48,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 72 transitions. [2020-10-13 11:11:48,086 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 72 transitions. Word has length 40 [2020-10-13 11:11:48,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:11:48,087 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 72 transitions. [2020-10-13 11:11:48,087 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 11:11:48,087 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 72 transitions. [2020-10-13 11:11:48,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-13 11:11:48,088 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:11:48,088 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] [2020-10-13 11:11:48,088 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 11:11:48,089 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:11:48,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:11:48,091 INFO L82 PathProgramCache]: Analyzing trace with hash -1477568014, now seen corresponding path program 1 times [2020-10-13 11:11:48,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:11:48,092 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [61791925] [2020-10-13 11:11:48,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:11:48,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:11:48,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:48,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:48,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:48,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:48,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:48,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:48,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:49,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:49,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:49,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:49,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:49,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:49,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:53,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:11:53,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-13 11:11:53,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 11:11:53,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 11:11:53,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:11:53,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:11:53,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 11:11:53,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 11:11:53,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:11:53,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:11:53,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:11:53,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:53,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:11:53,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:11:53,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:11:53,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:11:53,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:11:53,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:11:53,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:11:53,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:11:53,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:11:53,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 11:11:53,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:11:53,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:53,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:11:53,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:11:53,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:11:53,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:11:53,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:11:53,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:11:53,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 11:11:53,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:11:53,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:11:53,210 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:11:53,210 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [61791925] [2020-10-13 11:11:53,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 11:11:53,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 11:11:53,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512640666] [2020-10-13 11:11:53,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 11:11:53,212 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:11:53,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 11:11:53,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 11:11:53,213 INFO L87 Difference]: Start difference. First operand 59 states and 72 transitions. Second operand 6 states. [2020-10-13 11:11:53,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:11:53,307 INFO L93 Difference]: Finished difference Result 110 states and 136 transitions. [2020-10-13 11:11:53,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 11:11:53,307 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2020-10-13 11:11:53,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:11:53,308 INFO L225 Difference]: With dead ends: 110 [2020-10-13 11:11:53,308 INFO L226 Difference]: Without dead ends: 62 [2020-10-13 11:11:53,309 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 11:11:53,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-13 11:11:53,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-10-13 11:11:53,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-13 11:11:53,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 74 transitions. [2020-10-13 11:11:53,318 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 74 transitions. Word has length 40 [2020-10-13 11:11:53,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:11:53,318 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 74 transitions. [2020-10-13 11:11:53,318 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 11:11:53,318 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 74 transitions. [2020-10-13 11:11:53,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-13 11:11:53,319 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:11:53,319 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:11:53,320 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 11:11:53,320 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:11:53,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:11:53,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1723311092, now seen corresponding path program 2 times [2020-10-13 11:11:53,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:11:53,321 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1465162863] [2020-10-13 11:11:53,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:11:53,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:11:53,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:53,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:53,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:53,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:53,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:53,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:53,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:54,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:54,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:54,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:54,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:54,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:54,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:58,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:11:58,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-13 11:11:58,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 11:11:58,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 11:11:58,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:11:58,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 11:11:58,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 11:11:58,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 11:11:58,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:11:58,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:11:58,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:11:58,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:58,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:11:58,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:11:58,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:11:58,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:11:58,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:11:58,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:11:58,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:11:58,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:11:58,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:11:58,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 11:11:58,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:11:58,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:58,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:11:58,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:11:58,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:11:58,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:11:58,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:11:58,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:11:58,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 11:11:58,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:11:58,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:11:58,401 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:11:58,402 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1465162863] [2020-10-13 11:11:58,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 11:11:58,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 11:11:58,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856387870] [2020-10-13 11:11:58,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 11:11:58,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:11:58,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 11:11:58,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 11:11:58,406 INFO L87 Difference]: Start difference. First operand 61 states and 74 transitions. Second operand 7 states. [2020-10-13 11:11:58,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:11:58,530 INFO L93 Difference]: Finished difference Result 112 states and 138 transitions. [2020-10-13 11:11:58,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 11:11:58,531 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 42 [2020-10-13 11:11:58,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:11:58,532 INFO L225 Difference]: With dead ends: 112 [2020-10-13 11:11:58,532 INFO L226 Difference]: Without dead ends: 64 [2020-10-13 11:11:58,533 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 11:11:58,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-13 11:11:58,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-10-13 11:11:58,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-13 11:11:58,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 76 transitions. [2020-10-13 11:11:58,541 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 76 transitions. Word has length 42 [2020-10-13 11:11:58,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:11:58,541 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 76 transitions. [2020-10-13 11:11:58,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 11:11:58,542 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 76 transitions. [2020-10-13 11:11:58,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-13 11:11:58,543 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:11:58,543 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:11:58,543 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 11:11:58,543 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:11:58,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:11:58,543 INFO L82 PathProgramCache]: Analyzing trace with hash -1723419274, now seen corresponding path program 3 times [2020-10-13 11:11:58,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:11:58,544 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1419707417] [2020-10-13 11:11:58,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:11:58,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:11:58,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:58,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:58,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:58,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:58,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:58,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:58,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:59,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:59,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:59,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:59,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:59,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:11:59,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:12:03,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:12:03,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-13 11:12:03,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 11:12:03,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 11:12:03,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:12:03,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 11:12:03,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 11:12:03,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 11:12:03,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:12:03,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:12:03,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:12:03,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:12:03,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:12:03,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:12:03,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:12:03,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 11:12:03,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:12:03,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:12:03,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:12:03,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:12:03,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:12:03,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 11:12:03,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:12:03,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:12:03,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:12:03,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:12:03,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:12:03,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:12:03,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:12:03,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:12:03,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 11:12:03,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:12:03,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:12:03,635 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-13 11:12:03,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1419707417] [2020-10-13 11:12:03,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:12:03,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 11:12:03,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139601282] [2020-10-13 11:12:03,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 11:12:03,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:12:03,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 11:12:03,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 11:12:03,638 INFO L87 Difference]: Start difference. First operand 63 states and 76 transitions. Second operand 7 states. [2020-10-13 11:12:03,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:12:03,895 INFO L93 Difference]: Finished difference Result 142 states and 181 transitions. [2020-10-13 11:12:03,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 11:12:03,895 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 44 [2020-10-13 11:12:03,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:12:03,897 INFO L225 Difference]: With dead ends: 142 [2020-10-13 11:12:03,897 INFO L226 Difference]: Without dead ends: 98 [2020-10-13 11:12:03,900 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 11:12:03,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-13 11:12:03,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 73. [2020-10-13 11:12:03,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-13 11:12:03,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 89 transitions. [2020-10-13 11:12:03,910 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 89 transitions. Word has length 44 [2020-10-13 11:12:03,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:12:03,910 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 89 transitions. [2020-10-13 11:12:03,910 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 11:12:03,910 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 89 transitions. [2020-10-13 11:12:03,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-13 11:12:03,911 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:12:03,912 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:12:03,912 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 11:12:03,912 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:12:03,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:12:03,912 INFO L82 PathProgramCache]: Analyzing trace with hash 882604280, now seen corresponding path program 1 times [2020-10-13 11:12:03,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:12:03,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1125369870] [2020-10-13 11:12:03,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:12:03,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:12:03,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:12:03,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:12:04,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:12:04,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:12:04,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:12:04,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:12:04,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:12:04,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:12:05,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:12:05,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-13 11:12:05,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 11:12:05,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1403 [2020-10-13 11:12:05,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:12:05,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 11:12:05,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 11:12:05,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 11:12:05,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:12:05,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:12:05,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:12:05,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:12:05,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:12:05,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:12:05,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:12:05,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:12:05,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:12:05,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:12:05,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:12:05,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:12:05,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:12:05,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 11:12:05,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:12:05,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:12:05,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:12:05,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:12:05,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:12:05,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:12:05,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:12:05,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:12:05,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 11:12:05,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:12:05,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:12:05,399 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:12:05,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1125369870] [2020-10-13 11:12:05,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 11:12:05,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 11:12:05,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444768790] [2020-10-13 11:12:05,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 11:12:05,407 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:12:05,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 11:12:05,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 11:12:05,408 INFO L87 Difference]: Start difference. First operand 73 states and 89 transitions. Second operand 8 states. [2020-10-13 11:12:05,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:12:05,528 INFO L93 Difference]: Finished difference Result 134 states and 166 transitions. [2020-10-13 11:12:05,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 11:12:05,529 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 44 [2020-10-13 11:12:05,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:12:05,529 INFO L225 Difference]: With dead ends: 134 [2020-10-13 11:12:05,530 INFO L226 Difference]: Without dead ends: 76 [2020-10-13 11:12:05,533 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 11:12:05,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-13 11:12:05,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-10-13 11:12:05,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-13 11:12:05,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 91 transitions. [2020-10-13 11:12:05,549 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 91 transitions. Word has length 44 [2020-10-13 11:12:05,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:12:05,549 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 91 transitions. [2020-10-13 11:12:05,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 11:12:05,549 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 91 transitions. [2020-10-13 11:12:05,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-13 11:12:05,550 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:12:05,551 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:12:05,551 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 11:12:05,554 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:12:05,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:12:05,554 INFO L82 PathProgramCache]: Analyzing trace with hash -5492230, now seen corresponding path program 2 times [2020-10-13 11:12:05,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:12:05,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1576491221] [2020-10-13 11:12:05,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:12:05,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:12:05,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:12:05,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:12:05,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:12:05,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:12:05,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:12:05,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:12:05,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:12:06,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:12:07,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:12:07,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-13 11:12:07,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 11:12:07,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1609 [2020-10-13 11:12:07,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:12:07,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 11:12:07,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 11:12:07,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 11:12:07,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:12:07,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:12:07,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:12:07,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:12:07,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:12:07,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:12:07,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:12:07,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:12:07,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:12:07,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:12:07,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:12:07,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:12:07,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:12:07,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-13 11:12:07,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:12:07,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:12:07,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:12:07,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:12:07,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:12:07,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 11:12:07,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:12:07,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:12:07,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 11:12:07,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:12:07,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:12:07,250 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:12:07,251 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1576491221] [2020-10-13 11:12:07,251 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 11:12:07,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 11:12:07,251 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328394153] [2020-10-13 11:12:07,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 11:12:07,252 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:12:07,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 11:12:07,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 11:12:07,252 INFO L87 Difference]: Start difference. First operand 75 states and 91 transitions. Second operand 9 states. [2020-10-13 11:12:07,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:12:07,378 INFO L93 Difference]: Finished difference Result 136 states and 168 transitions. [2020-10-13 11:12:07,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 11:12:07,379 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 46 [2020-10-13 11:12:07,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:12:07,380 INFO L225 Difference]: With dead ends: 136 [2020-10-13 11:12:07,380 INFO L226 Difference]: Without dead ends: 78 [2020-10-13 11:12:07,381 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 11:12:07,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-13 11:12:07,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2020-10-13 11:12:07,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-13 11:12:07,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 93 transitions. [2020-10-13 11:12:07,388 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 93 transitions. Word has length 46 [2020-10-13 11:12:07,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:12:07,388 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 93 transitions. [2020-10-13 11:12:07,389 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 11:12:07,389 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 93 transitions. [2020-10-13 11:12:07,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-13 11:12:07,390 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:12:07,390 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:12:07,390 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 11:12:07,390 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:12:07,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:12:07,391 INFO L82 PathProgramCache]: Analyzing trace with hash 1232253564, now seen corresponding path program 3 times [2020-10-13 11:12:07,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:12:07,391 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [353732228] [2020-10-13 11:12:07,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:12:07,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:12:07,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:12:07,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:12:07,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:12:07,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:12:07,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:12:07,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:12:07,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:12:07,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:12:09,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:12:09,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-13 11:12:09,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 11:12:09,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1782 [2020-10-13 11:12:09,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:12:09,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:12:09,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-13 11:12:09,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 11:12:09,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:12:09,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:12:09,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:12:09,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:12:09,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:12:09,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:12:09,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:12:09,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:12:09,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:12:09,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:12:09,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:12:09,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:12:09,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:12:09,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 11:12:09,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:12:09,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:12:09,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:12:09,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:12:09,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:12:09,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:12:09,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:12:09,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:12:09,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:12:09,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 11:12:09,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:12:09,225 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-13 11:12:09,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [353732228] [2020-10-13 11:12:09,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:12:09,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 11:12:09,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894580196] [2020-10-13 11:12:09,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 11:12:09,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:12:09,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 11:12:09,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 11:12:09,227 INFO L87 Difference]: Start difference. First operand 77 states and 93 transitions. Second operand 6 states. [2020-10-13 11:12:09,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:12:09,373 INFO L93 Difference]: Finished difference Result 96 states and 119 transitions. [2020-10-13 11:12:09,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 11:12:09,373 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 48 [2020-10-13 11:12:09,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:12:09,374 INFO L225 Difference]: With dead ends: 96 [2020-10-13 11:12:09,374 INFO L226 Difference]: Without dead ends: 0 [2020-10-13 11:12:09,377 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-13 11:12:09,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-13 11:12:09,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-13 11:12:09,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-13 11:12:09,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-13 11:12:09,378 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 48 [2020-10-13 11:12:09,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:12:09,379 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-13 11:12:09,379 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 11:12:09,379 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-13 11:12:09,379 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-13 11:12:09,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 11:12:09,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-13 11:12:09,472 INFO L268 CegarLoopResult]: For program point L60(line 60) no Hoare annotation was computed. [2020-10-13 11:12:09,473 INFO L268 CegarLoopResult]: For program point L60-2(line 60) no Hoare annotation was computed. [2020-10-13 11:12:09,473 INFO L268 CegarLoopResult]: For program point L60-4(lines 54 72) no Hoare annotation was computed. [2020-10-13 11:12:09,473 INFO L268 CegarLoopResult]: For program point L56-1(line 56) no Hoare annotation was computed. [2020-10-13 11:12:09,473 INFO L268 CegarLoopResult]: For program point L56-3(line 56) no Hoare annotation was computed. [2020-10-13 11:12:09,473 INFO L271 CegarLoopResult]: At program point L56-5(line 56) the Hoare annotation is: true [2020-10-13 11:12:09,473 INFO L268 CegarLoopResult]: For program point L52-1(lines 52 73) no Hoare annotation was computed. [2020-10-13 11:12:09,473 INFO L268 CegarLoopResult]: For program point L56-6(line 56) no Hoare annotation was computed. [2020-10-13 11:12:09,473 INFO L268 CegarLoopResult]: For program point L52-2(lines 52 73) no Hoare annotation was computed. [2020-10-13 11:12:09,473 INFO L271 CegarLoopResult]: At program point L52-4(lines 52 73) the Hoare annotation is: true [2020-10-13 11:12:09,474 INFO L268 CegarLoopResult]: For program point L52-5(lines 52 73) no Hoare annotation was computed. [2020-10-13 11:12:09,474 INFO L264 CegarLoopResult]: At program point L65(line 65) the Hoare annotation is: (< parse_expression_list_~j~0 (+ parse_expression_list_~start~0 1)) [2020-10-13 11:12:09,474 INFO L268 CegarLoopResult]: For program point L65-1(line 65) no Hoare annotation was computed. [2020-10-13 11:12:09,474 INFO L268 CegarLoopResult]: For program point L61(lines 61 70) no Hoare annotation was computed. [2020-10-13 11:12:09,474 INFO L268 CegarLoopResult]: For program point L57(line 57) no Hoare annotation was computed. [2020-10-13 11:12:09,474 INFO L268 CegarLoopResult]: For program point L57-2(line 57) no Hoare annotation was computed. [2020-10-13 11:12:09,474 INFO L264 CegarLoopResult]: At program point L66(line 66) the Hoare annotation is: (< parse_expression_list_~j~0 (+ parse_expression_list_~start~0 1)) [2020-10-13 11:12:09,474 INFO L268 CegarLoopResult]: For program point L66-1(line 66) no Hoare annotation was computed. [2020-10-13 11:12:09,475 INFO L268 CegarLoopResult]: For program point parse_expression_listFINAL(lines 47 75) no Hoare annotation was computed. [2020-10-13 11:12:09,475 INFO L268 CegarLoopResult]: For program point L62(lines 62 64) no Hoare annotation was computed. [2020-10-13 11:12:09,475 INFO L264 CegarLoopResult]: At program point parse_expression_listENTRY(lines 47 75) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-10-13 11:12:09,475 INFO L268 CegarLoopResult]: For program point L54(lines 54 72) no Hoare annotation was computed. [2020-10-13 11:12:09,475 INFO L268 CegarLoopResult]: For program point parse_expression_listEXIT(lines 47 75) no Hoare annotation was computed. [2020-10-13 11:12:09,475 INFO L268 CegarLoopResult]: For program point L59-1(line 59) no Hoare annotation was computed. [2020-10-13 11:12:09,475 INFO L268 CegarLoopResult]: For program point L59-2(line 59) no Hoare annotation was computed. [2020-10-13 11:12:09,475 INFO L268 CegarLoopResult]: For program point L55(line 55) no Hoare annotation was computed. [2020-10-13 11:12:09,475 INFO L268 CegarLoopResult]: For program point L59-4(line 59) no Hoare annotation was computed. [2020-10-13 11:12:09,475 INFO L268 CegarLoopResult]: For program point L59-6(line 59) no Hoare annotation was computed. [2020-10-13 11:12:09,475 INFO L268 CegarLoopResult]: For program point L51(line 51) no Hoare annotation was computed. [2020-10-13 11:12:09,476 INFO L271 CegarLoopResult]: At program point L59-8(line 59) the Hoare annotation is: true [2020-10-13 11:12:09,476 INFO L268 CegarLoopResult]: For program point L59-9(line 59) no Hoare annotation was computed. [2020-10-13 11:12:09,476 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-13 11:12:09,476 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-10-13 11:12:09,476 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-13 11:12:09,476 INFO L268 CegarLoopResult]: For program point r_strncpyFINAL(line 31) no Hoare annotation was computed. [2020-10-13 11:12:09,476 INFO L268 CegarLoopResult]: For program point r_strncpyEXIT(line 31) no Hoare annotation was computed. [2020-10-13 11:12:09,476 INFO L271 CegarLoopResult]: At program point r_strncpyENTRY(line 31) the Hoare annotation is: true [2020-10-13 11:12:09,476 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-13 11:12:09,476 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-13 11:12:09,476 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-13 11:12:09,477 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-13 11:12:09,477 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 76 85) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-10-13 11:12:09,477 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 76 85) no Hoare annotation was computed. [2020-10-13 11:12:09,477 INFO L271 CegarLoopResult]: At program point L83(line 83) the Hoare annotation is: true [2020-10-13 11:12:09,477 INFO L268 CegarLoopResult]: For program point L83-1(line 83) no Hoare annotation was computed. [2020-10-13 11:12:09,477 INFO L268 CegarLoopResult]: For program point L79-2(lines 79 81) no Hoare annotation was computed. [2020-10-13 11:12:09,477 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 76 85) no Hoare annotation was computed. [2020-10-13 11:12:09,477 INFO L271 CegarLoopResult]: At program point L79-3(lines 79 81) the Hoare annotation is: true [2020-10-13 11:12:09,478 INFO L268 CegarLoopResult]: For program point L79-4(lines 79 81) no Hoare annotation was computed. [2020-10-13 11:12:09,478 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2020-10-13 11:12:09,478 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2020-10-13 11:12:09,478 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-10-13 11:12:09,478 INFO L268 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2020-10-13 11:12:09,478 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-10-13 11:12:09,478 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2020-10-13 11:12:09,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 11:12:09 BoogieIcfgContainer [2020-10-13 11:12:09,490 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 11:12:09,492 INFO L168 Benchmark]: Toolchain (without parser) took 46607.57 ms. Allocated memory was 142.1 MB in the beginning and 705.2 MB in the end (delta: 563.1 MB). Free memory was 104.1 MB in the beginning and 464.7 MB in the end (delta: -360.6 MB). Peak memory consumption was 202.5 MB. Max. memory is 7.1 GB. [2020-10-13 11:12:09,493 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 142.1 MB. Free memory was 123.7 MB in the beginning and 123.2 MB in the end (delta: 420.0 kB). Peak memory consumption was 420.0 kB. Max. memory is 7.1 GB. [2020-10-13 11:12:09,494 INFO L168 Benchmark]: CACSL2BoogieTranslator took 347.61 ms. Allocated memory was 142.1 MB in the beginning and 204.5 MB in the end (delta: 62.4 MB). Free memory was 103.7 MB in the beginning and 181.1 MB in the end (delta: -77.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. [2020-10-13 11:12:09,495 INFO L168 Benchmark]: Boogie Preprocessor took 58.64 ms. Allocated memory is still 204.5 MB. Free memory was 181.1 MB in the beginning and 178.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-10-13 11:12:09,495 INFO L168 Benchmark]: RCFGBuilder took 559.57 ms. Allocated memory is still 204.5 MB. Free memory was 178.4 MB in the beginning and 149.7 MB in the end (delta: 28.8 MB). Peak memory consumption was 28.8 MB. Max. memory is 7.1 GB. [2020-10-13 11:12:09,496 INFO L168 Benchmark]: TraceAbstraction took 45637.25 ms. Allocated memory was 204.5 MB in the beginning and 705.2 MB in the end (delta: 500.7 MB). Free memory was 148.8 MB in the beginning and 464.7 MB in the end (delta: -315.9 MB). Peak memory consumption was 184.8 MB. Max. memory is 7.1 GB. [2020-10-13 11:12:09,499 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 142.1 MB. Free memory was 123.7 MB in the beginning and 123.2 MB in the end (delta: 420.0 kB). Peak memory consumption was 420.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 347.61 ms. Allocated memory was 142.1 MB in the beginning and 204.5 MB in the end (delta: 62.4 MB). Free memory was 103.7 MB in the beginning and 181.1 MB in the end (delta: -77.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 58.64 ms. Allocated memory is still 204.5 MB. Free memory was 181.1 MB in the beginning and 178.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 559.57 ms. Allocated memory is still 204.5 MB. Free memory was 178.4 MB in the beginning and 149.7 MB in the end (delta: 28.8 MB). Peak memory consumption was 28.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 45637.25 ms. Allocated memory was 204.5 MB in the beginning and 705.2 MB in the end (delta: 500.7 MB). Free memory was 148.8 MB in the beginning and 464.7 MB in the end (delta: -315.9 MB). Peak memory consumption was 184.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 79]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 56]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 55 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 45.4s, OverallIterations: 11, TraceHistogramMax: 6, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 566 SDtfs, 217 SDslu, 1126 SDs, 0 SdLazy, 995 SolverSat, 77 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 102 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=77occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 51 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 14 LocationsWithAnnotation, 76 PreInvPairs, 95 NumberOfFragments, 35 HoareAnnotationTreeSize, 76 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 14 FomulaSimplificationsInter, 40 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 43.0s InterpolantComputationTime, 446 NumberOfCodeBlocks, 446 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 435 ConstructedInterpolants, 0 QuantifiedInterpolants, 28268 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 6 PerfectInterpolantSequences, 56/111 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...