/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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 language data_model -i ../../../trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 10:01:44,613 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 10:01:44,616 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 10:01:44,666 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 10:01:44,667 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 10:01:44,674 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 10:01:44,675 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 10:01:44,680 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 10:01:44,683 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 10:01:44,689 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 10:01:44,690 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 10:01:44,692 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 10:01:44,692 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 10:01:44,696 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 10:01:44,697 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 10:01:44,698 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 10:01:44,699 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 10:01:44,700 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 10:01:44,702 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 10:01:44,704 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 10:01:44,706 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 10:01:44,707 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 10:01:44,709 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 10:01:44,710 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 10:01:44,713 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 10:01:44,713 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 10:01:44,713 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 10:01:44,714 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 10:01:44,715 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 10:01:44,716 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 10:01:44,716 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 10:01:44,717 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 10:01:44,718 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 10:01:44,719 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 10:01:44,720 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 10:01:44,721 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 10:01:44,721 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 10:01:44,722 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 10:01:44,722 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 10:01:44,723 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 10:01:44,724 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 10:01:44,725 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 [2020-10-29 10:01:44,752 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 10:01:44,752 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 10:01:44,753 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 10:01:44,754 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 10:01:44,754 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 10:01:44,754 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 10:01:44,754 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 10:01:44,755 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 10:01:44,755 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 10:01:44,755 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 10:01:44,755 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 10:01:44,755 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 10:01:44,756 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 10:01:44,756 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 10:01:44,756 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 10:01:44,756 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 10:01:44,757 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 10:01:44,757 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 10:01:44,773 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 10:01:44,774 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 10:01:44,774 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 10:01:44,774 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 10:01:44,774 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 10:01:44,775 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 10:01:44,775 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 10:01:44,775 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 10:01:44,775 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 10:01:44,775 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 10:01:44,775 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 10:01:44,776 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 10:01:45,125 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 10:01:45,150 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 10:01:45,152 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 10:01:45,154 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 10:01:45,155 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 10:01:45,156 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-10-29 10:01:45,248 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6fdef0306/a1f4f5894fec4c079dfe75118a29ddff/FLAG7e5996d78 [2020-10-29 10:01:45,919 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 10:01:45,920 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-10-29 10:01:45,930 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6fdef0306/a1f4f5894fec4c079dfe75118a29ddff/FLAG7e5996d78 [2020-10-29 10:01:46,228 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6fdef0306/a1f4f5894fec4c079dfe75118a29ddff [2020-10-29 10:01:46,231 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 10:01:46,239 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 10:01:46,241 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 10:01:46,241 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 10:01:46,248 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 10:01:46,249 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 10:01:46" (1/1) ... [2020-10-29 10:01:46,254 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@673a6309 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 10:01:46, skipping insertion in model container [2020-10-29 10:01:46,254 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 10:01:46" (1/1) ... [2020-10-29 10:01:46,262 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 10:01:46,287 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 10:01:46,466 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 10:01:46,474 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 10:01:46,507 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 10:01:46,532 INFO L208 MainTranslator]: Completed translation [2020-10-29 10:01:46,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 10:01:46 WrapperNode [2020-10-29 10:01:46,533 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 10:01:46,534 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 10:01:46,534 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 10:01:46,535 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 10:01:46,547 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 10:01:46" (1/1) ... [2020-10-29 10:01:46,548 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 10:01:46" (1/1) ... [2020-10-29 10:01:46,558 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 10:01:46" (1/1) ... [2020-10-29 10:01:46,559 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 10:01:46" (1/1) ... [2020-10-29 10:01:46,576 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 10:01:46" (1/1) ... [2020-10-29 10:01:46,589 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 10:01:46" (1/1) ... [2020-10-29 10:01:46,591 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 10:01:46" (1/1) ... [2020-10-29 10:01:46,602 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 10:01:46,603 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 10:01:46,603 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 10:01:46,603 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 10:01:46,607 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 10:01:46" (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 [2020-10-29 10:01:46,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 10:01:46,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 10:01:46,693 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 10:01:46,693 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 10:01:46,693 INFO L138 BoogieDeclarations]: Found implementation of procedure r_strncpy [2020-10-29 10:01:46,694 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_expression_list [2020-10-29 10:01:46,694 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 10:01:46,694 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 10:01:46,694 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 10:01:46,694 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 10:01:46,694 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 10:01:46,695 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 10:01:46,695 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 10:01:46,695 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 10:01:46,695 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2020-10-29 10:01:46,695 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2020-10-29 10:01:46,696 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2020-10-29 10:01:46,696 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2020-10-29 10:01:46,696 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy_ptr [2020-10-29 10:01:46,696 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2020-10-29 10:01:46,696 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2020-10-29 10:01:46,696 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2020-10-29 10:01:46,697 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2020-10-29 10:01:46,697 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2020-10-29 10:01:46,697 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-10-29 10:01:46,697 INFO L130 BoogieDeclarations]: Found specification of procedure isascii [2020-10-29 10:01:46,697 INFO L130 BoogieDeclarations]: Found specification of procedure isspace [2020-10-29 10:01:46,698 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-10-29 10:01:46,698 INFO L130 BoogieDeclarations]: Found specification of procedure strrand [2020-10-29 10:01:46,698 INFO L130 BoogieDeclarations]: Found specification of procedure istrrand [2020-10-29 10:01:46,698 INFO L130 BoogieDeclarations]: Found specification of procedure istrchr [2020-10-29 10:01:46,698 INFO L130 BoogieDeclarations]: Found specification of procedure istrrchr [2020-10-29 10:01:46,698 INFO L130 BoogieDeclarations]: Found specification of procedure istrncmp [2020-10-29 10:01:46,699 INFO L130 BoogieDeclarations]: Found specification of procedure istrstr [2020-10-29 10:01:46,699 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncpy [2020-10-29 10:01:46,699 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcpy [2020-10-29 10:01:46,699 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcat [2020-10-29 10:01:46,699 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncat [2020-10-29 10:01:46,699 INFO L130 BoogieDeclarations]: Found specification of procedure r_memcpy [2020-10-29 10:01:46,700 INFO L130 BoogieDeclarations]: Found specification of procedure parse_expression_list [2020-10-29 10:01:46,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 10:01:46,700 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 10:01:46,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 10:01:46,700 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 10:01:46,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 10:01:46,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 10:01:46,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 10:01:47,287 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 10:01:47,287 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-29 10:01:47,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 10:01:47 BoogieIcfgContainer [2020-10-29 10:01:47,289 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 10:01:47,291 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 10:01:47,291 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 10:01:47,294 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 10:01:47,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 10:01:46" (1/3) ... [2020-10-29 10:01:47,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@719ea1ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 10:01:47, skipping insertion in model container [2020-10-29 10:01:47,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 10:01:46" (2/3) ... [2020-10-29 10:01:47,296 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@719ea1ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 10:01:47, skipping insertion in model container [2020-10-29 10:01:47,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 10:01:47" (3/3) ... [2020-10-29 10:01:47,297 INFO L111 eAbstractionObserver]: Analyzing ICFG verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-10-29 10:01:47,309 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 10:01:47,314 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 10:01:47,328 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 10:01:47,356 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 10:01:47,357 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 10:01:47,357 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 10:01:47,357 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 10:01:47,357 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 10:01:47,357 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 10:01:47,357 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 10:01:47,358 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 10:01:47,377 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2020-10-29 10:01:47,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-29 10:01:47,384 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:01:47,385 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] [2020-10-29 10:01:47,385 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:01:47,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:01:47,392 INFO L82 PathProgramCache]: Analyzing trace with hash -1243057979, now seen corresponding path program 1 times [2020-10-29 10:01:47,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:01:47,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [264977718] [2020-10-29 10:01:47,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:01:47,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:47,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:47,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:47,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:47,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:48,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:49,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:50,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:50,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-29 10:01:50,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 10:01:50,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3418 [2020-10-29 10:01:50,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:50,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:50,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 10:01:50,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 10:01:50,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 10:01:50,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 10:01:51,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:01:51,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:51,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:51,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:51,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:01:51,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:01:51,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 10:01:51,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:51,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:51,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:01:51,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:01:51,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:01:51,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 10:01:51,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 10:01:51,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:51,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:51,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:51,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:01:51,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:01:51,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 10:01:51,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:51,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:51,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:01:51,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:01:51,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 10:01:51,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 10:01:51,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:01:51,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [264977718] [2020-10-29 10:01:51,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:01:51,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 10:01:51,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034611069] [2020-10-29 10:01:51,287 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 10:01:51,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:01:51,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 10:01:51,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-29 10:01:51,310 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 9 states. [2020-10-29 10:01:51,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:01:51,761 INFO L93 Difference]: Finished difference Result 163 states and 233 transitions. [2020-10-29 10:01:51,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 10:01:51,763 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 31 [2020-10-29 10:01:51,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:01:51,773 INFO L225 Difference]: With dead ends: 163 [2020-10-29 10:01:51,773 INFO L226 Difference]: Without dead ends: 74 [2020-10-29 10:01:51,777 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-29 10:01:51,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-29 10:01:51,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 55. [2020-10-29 10:01:51,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-29 10:01:51,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 66 transitions. [2020-10-29 10:01:51,827 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 66 transitions. Word has length 31 [2020-10-29 10:01:51,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:01:51,828 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 66 transitions. [2020-10-29 10:01:51,828 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 10:01:51,828 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 66 transitions. [2020-10-29 10:01:51,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-29 10:01:51,830 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:01:51,830 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] [2020-10-29 10:01:51,830 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 10:01:51,831 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:01:51,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:01:51,831 INFO L82 PathProgramCache]: Analyzing trace with hash -815996806, now seen corresponding path program 1 times [2020-10-29 10:01:51,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:01:51,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1675992170] [2020-10-29 10:01:51,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:01:51,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:51,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:51,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:51,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:51,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:52,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:52,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:52,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:52,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:52,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:52,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:52,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:55,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:55,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-29 10:01:55,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 10:01:55,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4108 [2020-10-29 10:01:55,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:55,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:55,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 10:01:55,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 10:01:55,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 10:01:55,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 10:01:56,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:01:56,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:56,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:56,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:56,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:01:56,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:01:56,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 10:01:56,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:56,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:56,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:01:56,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:01:56,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:01:56,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 10:01:56,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-29 10:01:56,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:56,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:56,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:56,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:01:56,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:01:56,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 10:01:56,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:56,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:56,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:01:56,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:01:56,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 10:01:56,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 10:01:56,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:01:56,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1675992170] [2020-10-29 10:01:56,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:01:56,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 10:01:56,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556459503] [2020-10-29 10:01:56,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 10:01:56,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:01:56,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 10:01:56,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-29 10:01:56,161 INFO L87 Difference]: Start difference. First operand 55 states and 66 transitions. Second operand 9 states. [2020-10-29 10:01:56,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:01:56,583 INFO L93 Difference]: Finished difference Result 156 states and 201 transitions. [2020-10-29 10:01:56,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 10:01:56,583 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2020-10-29 10:01:56,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:01:56,585 INFO L225 Difference]: With dead ends: 156 [2020-10-29 10:01:56,586 INFO L226 Difference]: Without dead ends: 101 [2020-10-29 10:01:56,587 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2020-10-29 10:01:56,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-29 10:01:56,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 90. [2020-10-29 10:01:56,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-29 10:01:56,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 112 transitions. [2020-10-29 10:01:56,603 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 112 transitions. Word has length 35 [2020-10-29 10:01:56,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:01:56,604 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 112 transitions. [2020-10-29 10:01:56,604 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 10:01:56,604 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 112 transitions. [2020-10-29 10:01:56,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-29 10:01:56,607 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:01:56,607 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] [2020-10-29 10:01:56,607 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 10:01:56,607 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:01:56,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:01:56,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1668484789, now seen corresponding path program 1 times [2020-10-29 10:01:56,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:01:56,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1508716074] [2020-10-29 10:01:56,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:01:56,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:56,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:56,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:56,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:56,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:56,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:56,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:57,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:59,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:01,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:02:01,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-29 10:02:01,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 10:02:01,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 10:02:01,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:02:01,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:02:01,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 10:02:01,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 10:02:01,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 10:02:01,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 10:02:01,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:02:01,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:02:01,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:01,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:02:01,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:02:01,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:02:01,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 10:02:01,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:02:01,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:02:01,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:02:01,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:02:01,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:02:01,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 10:02:01,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 10:02:01,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:02:01,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:01,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:02:01,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:02:01,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:02:01,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 10:02:01,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:02:01,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:02:01,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:02:01,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:02:01,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 10:02:01,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:02:01,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:02:01,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1508716074] [2020-10-29 10:02:01,801 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:02:01,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 10:02:01,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494236475] [2020-10-29 10:02:01,802 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 10:02:01,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:02:01,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 10:02:01,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-29 10:02:01,803 INFO L87 Difference]: Start difference. First operand 90 states and 112 transitions. Second operand 9 states. [2020-10-29 10:02:02,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:02:02,126 INFO L93 Difference]: Finished difference Result 197 states and 252 transitions. [2020-10-29 10:02:02,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 10:02:02,126 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2020-10-29 10:02:02,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:02:02,129 INFO L225 Difference]: With dead ends: 197 [2020-10-29 10:02:02,129 INFO L226 Difference]: Without dead ends: 94 [2020-10-29 10:02:02,130 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-29 10:02:02,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-29 10:02:02,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 80. [2020-10-29 10:02:02,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-29 10:02:02,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 98 transitions. [2020-10-29 10:02:02,142 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 98 transitions. Word has length 37 [2020-10-29 10:02:02,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:02:02,142 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 98 transitions. [2020-10-29 10:02:02,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 10:02:02,142 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 98 transitions. [2020-10-29 10:02:02,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-29 10:02:02,144 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:02:02,144 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:02:02,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 10:02:02,145 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:02:02,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:02:02,145 INFO L82 PathProgramCache]: Analyzing trace with hash 1089017913, now seen corresponding path program 1 times [2020-10-29 10:02:02,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:02:02,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [490896237] [2020-10-29 10:02:02,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:02:02,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:02:02,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:02,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:02,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:02,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:02,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:02,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:02,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:02,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:05,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:05,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:05,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:05,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:07,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:02:07,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-29 10:02:07,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 10:02:07,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 10:02:07,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:02:07,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:02:07,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 10:02:07,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 10:02:07,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 10:02:07,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 10:02:07,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:02:07,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:02:07,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:07,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:02:07,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:02:07,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:02:07,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 10:02:07,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:02:07,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:02:07,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:02:07,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:02:07,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:02:07,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:02:07,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-29 10:02:07,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:02:07,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:07,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:02:07,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:02:07,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:02:07,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 10:02:07,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:02:07,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:02:07,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:02:07,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:02:07,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 10:02:07,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:02:07,295 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:02:07,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [490896237] [2020-10-29 10:02:07,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 10:02:07,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 10:02:07,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101316798] [2020-10-29 10:02:07,297 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 10:02:07,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:02:07,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 10:02:07,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-29 10:02:07,298 INFO L87 Difference]: Start difference. First operand 80 states and 98 transitions. Second operand 10 states. [2020-10-29 10:02:07,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:02:07,761 INFO L93 Difference]: Finished difference Result 272 states and 363 transitions. [2020-10-29 10:02:07,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 10:02:07,762 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 42 [2020-10-29 10:02:07,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:02:07,765 INFO L225 Difference]: With dead ends: 272 [2020-10-29 10:02:07,765 INFO L226 Difference]: Without dead ends: 143 [2020-10-29 10:02:07,766 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-29 10:02:07,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-10-29 10:02:07,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 100. [2020-10-29 10:02:07,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-29 10:02:07,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 122 transitions. [2020-10-29 10:02:07,790 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 122 transitions. Word has length 42 [2020-10-29 10:02:07,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:02:07,791 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 122 transitions. [2020-10-29 10:02:07,791 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 10:02:07,795 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 122 transitions. [2020-10-29 10:02:07,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-29 10:02:07,797 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:02:07,797 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:02:07,797 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 10:02:07,798 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:02:07,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:02:07,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1307872631, now seen corresponding path program 1 times [2020-10-29 10:02:07,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:02:07,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [313703030] [2020-10-29 10:02:07,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:02:07,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:02:07,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:07,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:07,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:07,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:07,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:07,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:07,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:07,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:09,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:10,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:10,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:12,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:02:12,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-29 10:02:12,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 10:02:12,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 10:02:12,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:02:12,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:02:12,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 10:02:12,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 10:02:12,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 10:02:12,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:02:12,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:02:12,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:02:12,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:12,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:02:12,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:02:12,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:02:12,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 10:02:12,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:02:12,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:02:12,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:02:12,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:02:12,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:02:12,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:02:12,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-29 10:02:12,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:02:12,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:12,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:02:12,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:02:12,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:02:12,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:02:12,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:02:12,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:02:12,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:02:12,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:02:12,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 10:02:12,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:02:12,942 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:02:12,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [313703030] [2020-10-29 10:02:12,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 10:02:12,943 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 10:02:12,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620119646] [2020-10-29 10:02:12,943 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 10:02:12,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:02:12,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 10:02:12,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-29 10:02:12,944 INFO L87 Difference]: Start difference. First operand 100 states and 122 transitions. Second operand 10 states. [2020-10-29 10:02:13,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:02:13,393 INFO L93 Difference]: Finished difference Result 222 states and 277 transitions. [2020-10-29 10:02:13,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 10:02:13,394 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 42 [2020-10-29 10:02:13,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:02:13,398 INFO L225 Difference]: With dead ends: 222 [2020-10-29 10:02:13,398 INFO L226 Difference]: Without dead ends: 145 [2020-10-29 10:02:13,399 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2020-10-29 10:02:13,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-10-29 10:02:13,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 100. [2020-10-29 10:02:13,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-29 10:02:13,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 123 transitions. [2020-10-29 10:02:13,418 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 123 transitions. Word has length 42 [2020-10-29 10:02:13,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:02:13,418 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 123 transitions. [2020-10-29 10:02:13,418 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 10:02:13,419 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 123 transitions. [2020-10-29 10:02:13,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-29 10:02:13,422 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:02:13,423 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:02:13,423 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 10:02:13,423 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:02:13,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:02:13,424 INFO L82 PathProgramCache]: Analyzing trace with hash 213025463, now seen corresponding path program 2 times [2020-10-29 10:02:13,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:02:13,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1976186655] [2020-10-29 10:02:13,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:02:13,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:02:13,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:13,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:13,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:13,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:13,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:14,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:15,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:02:15,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-29 10:02:15,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 10:02:15,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2451 [2020-10-29 10:02:15,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:02:15,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:02:15,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 10:02:15,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 10:02:15,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 10:02:15,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:02:16,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:02:16,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:02:16,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:16,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:02:16,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:02:16,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:02:16,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 10:02:16,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:02:16,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:02:16,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:02:16,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:02:16,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:02:16,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:02:16,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-29 10:02:16,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:02:16,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:16,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:02:16,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:02:16,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:02:16,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 10:02:16,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:02:16,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:02:16,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:02:16,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 10:02:16,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:02:16,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:02:16,026 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:02:16,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1976186655] [2020-10-29 10:02:16,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 10:02:16,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 10:02:16,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107512489] [2020-10-29 10:02:16,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 10:02:16,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:02:16,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 10:02:16,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-29 10:02:16,031 INFO L87 Difference]: Start difference. First operand 100 states and 123 transitions. Second operand 9 states. [2020-10-29 10:02:16,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:02:16,557 INFO L93 Difference]: Finished difference Result 351 states and 469 transitions. [2020-10-29 10:02:16,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 10:02:16,558 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 47 [2020-10-29 10:02:16,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:02:16,560 INFO L225 Difference]: With dead ends: 351 [2020-10-29 10:02:16,560 INFO L226 Difference]: Without dead ends: 202 [2020-10-29 10:02:16,561 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-10-29 10:02:16,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-29 10:02:16,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 142. [2020-10-29 10:02:16,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-29 10:02:16,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 179 transitions. [2020-10-29 10:02:16,574 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 179 transitions. Word has length 47 [2020-10-29 10:02:16,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:02:16,575 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 179 transitions. [2020-10-29 10:02:16,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 10:02:16,575 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 179 transitions. [2020-10-29 10:02:16,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-29 10:02:16,576 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:02:16,576 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:02:16,576 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 10:02:16,576 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:02:16,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:02:16,577 INFO L82 PathProgramCache]: Analyzing trace with hash -373780551, now seen corresponding path program 1 times [2020-10-29 10:02:16,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:02:16,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [911697060] [2020-10-29 10:02:16,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:02:16,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:02:16,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:16,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:16,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:16,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:17,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:02:17,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-29 10:02:17,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 10:02:17,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 495 [2020-10-29 10:02:17,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:02:17,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:02:17,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 10:02:17,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 10:02:17,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-29 10:02:17,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:02:17,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:02:17,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:02:17,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:17,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:02:17,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:02:17,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:02:17,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 10:02:17,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:02:17,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:02:17,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:02:17,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:02:17,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:02:17,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:02:17,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-29 10:02:17,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:02:17,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:17,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:02:17,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:02:17,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:02:17,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:02:17,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:02:17,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:02:17,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:02:17,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:02:17,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 10:02:17,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:02:17,363 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:02:17,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [911697060] [2020-10-29 10:02:17,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 10:02:17,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 10:02:17,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300980087] [2020-10-29 10:02:17,365 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 10:02:17,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:02:17,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 10:02:17,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-29 10:02:17,366 INFO L87 Difference]: Start difference. First operand 142 states and 179 transitions. Second operand 10 states. [2020-10-29 10:02:17,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:02:17,840 INFO L93 Difference]: Finished difference Result 211 states and 265 transitions. [2020-10-29 10:02:17,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 10:02:17,840 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 47 [2020-10-29 10:02:17,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:02:17,842 INFO L225 Difference]: With dead ends: 211 [2020-10-29 10:02:17,842 INFO L226 Difference]: Without dead ends: 207 [2020-10-29 10:02:17,843 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2020-10-29 10:02:17,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-10-29 10:02:17,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 120. [2020-10-29 10:02:17,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-29 10:02:17,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 151 transitions. [2020-10-29 10:02:17,864 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 151 transitions. Word has length 47 [2020-10-29 10:02:17,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:02:17,867 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 151 transitions. [2020-10-29 10:02:17,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 10:02:17,867 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 151 transitions. [2020-10-29 10:02:17,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-29 10:02:17,868 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:02:17,868 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:02:17,868 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 10:02:17,868 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:02:17,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:02:17,870 INFO L82 PathProgramCache]: Analyzing trace with hash 431880181, now seen corresponding path program 2 times [2020-10-29 10:02:17,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:02:17,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [759617815] [2020-10-29 10:02:17,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:02:17,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:02:17,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:17,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:17,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:18,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:18,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:02:18,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-29 10:02:18,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 10:02:18,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 681 [2020-10-29 10:02:18,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:02:18,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:02:18,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 10:02:18,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 10:02:18,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-29 10:02:18,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:02:18,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:02:18,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:02:18,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:18,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:02:18,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:02:18,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:02:18,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 10:02:18,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:02:18,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:02:18,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:02:18,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:02:18,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:02:18,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:02:18,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-29 10:02:18,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:02:18,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:18,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:02:18,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:02:18,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:02:18,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:02:18,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:02:18,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:02:18,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:02:18,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:02:18,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 10:02:18,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:02:18,766 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:02:18,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [759617815] [2020-10-29 10:02:18,767 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 10:02:18,767 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 10:02:18,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487778356] [2020-10-29 10:02:18,769 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 10:02:18,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:02:18,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 10:02:18,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-29 10:02:18,770 INFO L87 Difference]: Start difference. First operand 120 states and 151 transitions. Second operand 11 states. [2020-10-29 10:02:19,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:02:19,399 INFO L93 Difference]: Finished difference Result 207 states and 265 transitions. [2020-10-29 10:02:19,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 10:02:19,400 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 47 [2020-10-29 10:02:19,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:02:19,404 INFO L225 Difference]: With dead ends: 207 [2020-10-29 10:02:19,404 INFO L226 Difference]: Without dead ends: 203 [2020-10-29 10:02:19,405 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2020-10-29 10:02:19,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-10-29 10:02:19,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 137. [2020-10-29 10:02:19,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-29 10:02:19,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 178 transitions. [2020-10-29 10:02:19,417 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 178 transitions. Word has length 47 [2020-10-29 10:02:19,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:02:19,418 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 178 transitions. [2020-10-29 10:02:19,418 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 10:02:19,418 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 178 transitions. [2020-10-29 10:02:19,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-29 10:02:19,419 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:02:19,419 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:02:19,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 10:02:19,419 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:02:19,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:02:19,420 INFO L82 PathProgramCache]: Analyzing trace with hash -154925833, now seen corresponding path program 1 times [2020-10-29 10:02:19,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:02:19,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1719633440] [2020-10-29 10:02:19,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:02:19,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:02:19,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:19,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:19,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:02:19,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-29 10:02:19,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 10:02:19,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-29 10:02:19,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:02:19,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:02:19,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 10:02:19,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-29 10:02:19,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 10:02:19,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:02:19,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:02:19,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:02:19,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:19,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:02:19,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:02:19,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:02:19,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:02:19,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:02:19,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:02:19,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:02:19,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:02:19,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:02:19,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:02:19,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-29 10:02:19,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:02:19,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:19,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:02:19,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:02:19,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:02:19,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:02:19,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:02:19,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:02:19,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:02:19,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 10:02:19,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:02:19,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:02:19,568 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-29 10:02:19,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1719633440] [2020-10-29 10:02:19,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:02:19,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 10:02:19,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734459220] [2020-10-29 10:02:19,571 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 10:02:19,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:02:19,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 10:02:19,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 10:02:19,578 INFO L87 Difference]: Start difference. First operand 137 states and 178 transitions. Second operand 5 states. [2020-10-29 10:02:19,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:02:19,706 INFO L93 Difference]: Finished difference Result 231 states and 299 transitions. [2020-10-29 10:02:19,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 10:02:19,706 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 47 [2020-10-29 10:02:19,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:02:19,708 INFO L225 Difference]: With dead ends: 231 [2020-10-29 10:02:19,708 INFO L226 Difference]: Without dead ends: 145 [2020-10-29 10:02:19,709 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 10:02:19,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-10-29 10:02:19,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 143. [2020-10-29 10:02:19,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-29 10:02:19,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 183 transitions. [2020-10-29 10:02:19,722 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 183 transitions. Word has length 47 [2020-10-29 10:02:19,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:02:19,722 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 183 transitions. [2020-10-29 10:02:19,722 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 10:02:19,722 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 183 transitions. [2020-10-29 10:02:19,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-29 10:02:19,724 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:02:19,724 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:02:19,724 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 10:02:19,725 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:02:19,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:02:19,726 INFO L82 PathProgramCache]: Analyzing trace with hash 2145896757, now seen corresponding path program 1 times [2020-10-29 10:02:19,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:02:19,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1414789678] [2020-10-29 10:02:19,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:02:19,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:02:19,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:19,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:02:19,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-29 10:02:19,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:02:19,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 10:02:19,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:02:19,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:02:19,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:02:19,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-29 10:02:19,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 10:02:19,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:02:19,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:02:19,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:02:19,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:19,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:02:19,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:02:19,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:02:19,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:02:19,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:02:19,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:02:19,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:02:19,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:02:19,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:02:19,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:02:19,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-29 10:02:19,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:02:19,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:19,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:02:19,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:02:19,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:02:19,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:02:19,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:02:19,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:02:19,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:02:19,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 10:02:19,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:02:19,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:02:19,829 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-29 10:02:19,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1414789678] [2020-10-29 10:02:19,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:02:19,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 10:02:19,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952474670] [2020-10-29 10:02:19,831 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 10:02:19,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:02:19,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 10:02:19,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 10:02:19,831 INFO L87 Difference]: Start difference. First operand 143 states and 183 transitions. Second operand 4 states. [2020-10-29 10:02:19,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:02:19,935 INFO L93 Difference]: Finished difference Result 259 states and 336 transitions. [2020-10-29 10:02:19,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 10:02:19,936 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-10-29 10:02:19,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:02:19,937 INFO L225 Difference]: With dead ends: 259 [2020-10-29 10:02:19,937 INFO L226 Difference]: Without dead ends: 147 [2020-10-29 10:02:19,938 INFO L677 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 [2020-10-29 10:02:19,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-29 10:02:19,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 146. [2020-10-29 10:02:19,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-29 10:02:19,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 185 transitions. [2020-10-29 10:02:19,946 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 185 transitions. Word has length 47 [2020-10-29 10:02:19,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:02:19,947 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 185 transitions. [2020-10-29 10:02:19,947 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 10:02:19,947 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 185 transitions. [2020-10-29 10:02:19,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-29 10:02:19,947 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:02:19,948 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:02:19,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 10:02:19,948 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:02:19,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:02:19,949 INFO L82 PathProgramCache]: Analyzing trace with hash -2008521929, now seen corresponding path program 1 times [2020-10-29 10:02:19,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:02:19,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1131149313] [2020-10-29 10:02:19,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:02:19,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-29 10:02:19,962 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-29 10:02:19,962 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-29 10:02:19,966 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 10:02:19,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 10:02:19 BoogieIcfgContainer [2020-10-29 10:02:19,986 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 10:02:19,989 INFO L168 Benchmark]: Toolchain (without parser) took 33754.98 ms. Allocated memory was 153.1 MB in the beginning and 398.5 MB in the end (delta: 245.4 MB). Free memory was 129.4 MB in the beginning and 256.9 MB in the end (delta: -127.5 MB). Peak memory consumption was 118.1 MB. Max. memory is 8.0 GB. [2020-10-29 10:02:19,989 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 153.1 MB. Free memory is still 129.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 10:02:19,990 INFO L168 Benchmark]: CACSL2BoogieTranslator took 292.56 ms. Allocated memory is still 153.1 MB. Free memory was 128.9 MB in the beginning and 117.0 MB in the end (delta: 11.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-10-29 10:02:19,990 INFO L168 Benchmark]: Boogie Preprocessor took 67.71 ms. Allocated memory is still 153.1 MB. Free memory was 117.0 MB in the beginning and 115.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-29 10:02:19,991 INFO L168 Benchmark]: RCFGBuilder took 686.32 ms. Allocated memory is still 153.1 MB. Free memory was 114.9 MB in the beginning and 125.7 MB in the end (delta: -10.8 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. [2020-10-29 10:02:19,992 INFO L168 Benchmark]: TraceAbstraction took 32695.68 ms. Allocated memory was 153.1 MB in the beginning and 398.5 MB in the end (delta: 245.4 MB). Free memory was 125.2 MB in the beginning and 256.9 MB in the end (delta: -131.7 MB). Peak memory consumption was 114.2 MB. Max. memory is 8.0 GB. [2020-10-29 10:02:19,994 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 153.1 MB. Free memory is still 129.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 292.56 ms. Allocated memory is still 153.1 MB. Free memory was 128.9 MB in the beginning and 117.0 MB in the end (delta: 11.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 67.71 ms. Allocated memory is still 153.1 MB. Free memory was 117.0 MB in the beginning and 115.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 686.32 ms. Allocated memory is still 153.1 MB. Free memory was 114.9 MB in the beginning and 125.7 MB in the end (delta: -10.8 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 32695.68 ms. Allocated memory was 153.1 MB in the beginning and 398.5 MB in the end (delta: 245.4 MB). Free memory was 125.2 MB in the beginning and 256.9 MB in the end (delta: -131.7 MB). Peak memory consumption was 114.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 12]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L85] char A [2 + 2 + 4 +1]; [L86] A[2 + 2 + 4] = 0 [L87] CALL parse_expression_list (A) [L59] int start=0, i=-1, j=-1; [L60] char str2[2]; [L61] COND FALSE !(!str) [L63] i++ [L64] str[i] [L65] case 0: [L80] EXPR str[i] [L80] COND TRUE str[i] != 0 [L63] i++ [L64] str[i] [L65] case 0: [L80] EXPR str[i] [L80] COND TRUE str[i] != 0 [L63] i++ [L64] str[i] [L65] case 0: [L66] EXPR str[start] [L66] (str[start] == ' ') || (str[start] == '\t') [L66] EXPR str[start] [L66] (str[start] == ' ') || (str[start] == '\t') [L66] COND FALSE !((str[start] == ' ') || (str[start] == '\t')) [L67] EXPR str[start] [L67] COND FALSE !(str[start] == '"') [L68] j = i-1 [L69] (0 < j) && ((str[j] == ' ') || (str[j] == '\t')) [L69] EXPR str[j] [L69] EXPR (str[j] == ' ') || (str[j] == '\t') [L69] EXPR str[j] [L69] EXPR (str[j] == ' ') || (str[j] == '\t') [L69] (0 < j) && ((str[j] == ' ') || (str[j] == '\t')) [L69] COND FALSE !((0 < j) && ((str[j] == ' ') || (str[j] == '\t'))) [L70] (0 < j) && (str[j] == '"') [L70] EXPR str[j] [L70] (0 < j) && (str[j] == '"') [L70] COND FALSE !((0 < j) && (str[j] == '"')) [L71] COND TRUE start<=j [L72] CALL r_strncpy(str2, str+start, j-start+1) [L41] return strncpy(dest,src,n); [L72] RET r_strncpy(str2, str+start, j-start+1) [L73] CALL __VERIFIER_assert(j - start + 1 < 2) [L14] COND TRUE !(cond) [L15] CALL reach_error() [L12] COND FALSE !(0) [L12] __assert_fail ("0", "verisec_OpenSER_cases1_stripFullBoth_arr.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 56 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 32.6s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 4.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 469 SDtfs, 1160 SDslu, 1679 SDs, 0 SdLazy, 2448 SolverSat, 298 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 163 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=146occurred 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, 10 MinimizatonAttempts, 348 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 27.8s InterpolantComputationTime, 469 NumberOfCodeBlocks, 469 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 412 ConstructedInterpolants, 0 QuantifiedInterpolants, 59234 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 5 PerfectInterpolantSequences, 18/49 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 incorrect! Received shutdown request...