/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=DEEPEST --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 [2020-10-27 20:37:46,506 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 20:37:46,510 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 20:37:46,555 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 20:37:46,556 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 20:37:46,557 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 20:37:46,559 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 20:37:46,561 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 20:37:46,564 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 20:37:46,565 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 20:37:46,566 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 20:37:46,568 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 20:37:46,569 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 20:37:46,570 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 20:37:46,571 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 20:37:46,573 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 20:37:46,574 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 20:37:46,575 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 20:37:46,578 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 20:37:46,592 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 20:37:46,595 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 20:37:46,597 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 20:37:46,599 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 20:37:46,600 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 20:37:46,604 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 20:37:46,604 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 20:37:46,604 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 20:37:46,606 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 20:37:46,606 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 20:37:46,607 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 20:37:46,608 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 20:37:46,609 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 20:37:46,610 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 20:37:46,611 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 20:37:46,612 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 20:37:46,613 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 20:37:46,614 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 20:37:46,614 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 20:37:46,614 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 20:37:46,615 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 20:37:46,616 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 20:37:46,617 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 [2020-10-27 20:37:46,645 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 20:37:46,646 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 20:37:46,647 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 20:37:46,648 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 20:37:46,648 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 20:37:46,648 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 20:37:46,649 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 20:37:46,649 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 20:37:46,649 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 20:37:46,649 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 20:37:46,650 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 20:37:46,650 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 20:37:46,650 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 20:37:46,650 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 20:37:46,651 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 20:37:46,651 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 20:37:46,651 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 20:37:46,651 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 20:37:46,652 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 20:37:46,652 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 20:37:46,652 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 20:37:46,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 20:37:46,653 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 20:37:46,653 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 20:37:46,653 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 20:37:46,653 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 20:37:46,654 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 20:37:46,654 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 20:37:46,654 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 20:37:46,654 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 20:37:47,030 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 20:37:47,056 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 20:37:47,059 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 20:37:47,061 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 20:37:47,062 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 20:37:47,063 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-10-27 20:37:47,152 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/19a233d0c/3c233a84d4114228a6e1020b0633c7cf/FLAG429adc129 [2020-10-27 20:37:47,879 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 20:37:47,880 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-10-27 20:37:47,889 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/19a233d0c/3c233a84d4114228a6e1020b0633c7cf/FLAG429adc129 [2020-10-27 20:37:48,190 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/19a233d0c/3c233a84d4114228a6e1020b0633c7cf [2020-10-27 20:37:48,194 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 20:37:48,201 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 20:37:48,203 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 20:37:48,204 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 20:37:48,209 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 20:37:48,210 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:37:48" (1/1) ... [2020-10-27 20:37:48,214 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4048d394 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:37:48, skipping insertion in model container [2020-10-27 20:37:48,214 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:37:48" (1/1) ... [2020-10-27 20:37:48,222 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 20:37:48,243 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 20:37:48,485 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 20:37:48,494 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 20:37:48,526 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 20:37:48,552 INFO L208 MainTranslator]: Completed translation [2020-10-27 20:37:48,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:37:48 WrapperNode [2020-10-27 20:37:48,553 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 20:37:48,554 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 20:37:48,555 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 20:37:48,555 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 20:37:48,569 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:37:48" (1/1) ... [2020-10-27 20:37:48,569 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:37:48" (1/1) ... [2020-10-27 20:37:48,581 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:37:48" (1/1) ... [2020-10-27 20:37:48,582 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:37:48" (1/1) ... [2020-10-27 20:37:48,595 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:37:48" (1/1) ... [2020-10-27 20:37:48,602 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:37:48" (1/1) ... [2020-10-27 20:37:48,607 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:37:48" (1/1) ... [2020-10-27 20:37:48,618 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 20:37:48,620 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 20:37:48,620 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 20:37:48,620 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 20:37:48,621 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:37:48" (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 [2020-10-27 20:37:48,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 20:37:48,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 20:37:48,714 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 20:37:48,714 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 20:37:48,715 INFO L138 BoogieDeclarations]: Found implementation of procedure r_strncpy [2020-10-27 20:37:48,715 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_expression_list [2020-10-27 20:37:48,716 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 20:37:48,716 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 20:37:48,717 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 20:37:48,717 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 20:37:48,718 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 20:37:48,718 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 20:37:48,719 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 20:37:48,719 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 20:37:48,719 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2020-10-27 20:37:48,722 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2020-10-27 20:37:48,722 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2020-10-27 20:37:48,722 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2020-10-27 20:37:48,722 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy_ptr [2020-10-27 20:37:48,723 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2020-10-27 20:37:48,723 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2020-10-27 20:37:48,723 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2020-10-27 20:37:48,723 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2020-10-27 20:37:48,723 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2020-10-27 20:37:48,723 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-10-27 20:37:48,724 INFO L130 BoogieDeclarations]: Found specification of procedure isascii [2020-10-27 20:37:48,724 INFO L130 BoogieDeclarations]: Found specification of procedure isspace [2020-10-27 20:37:48,724 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-10-27 20:37:48,724 INFO L130 BoogieDeclarations]: Found specification of procedure strrand [2020-10-27 20:37:48,724 INFO L130 BoogieDeclarations]: Found specification of procedure istrrand [2020-10-27 20:37:48,724 INFO L130 BoogieDeclarations]: Found specification of procedure istrchr [2020-10-27 20:37:48,724 INFO L130 BoogieDeclarations]: Found specification of procedure istrrchr [2020-10-27 20:37:48,725 INFO L130 BoogieDeclarations]: Found specification of procedure istrncmp [2020-10-27 20:37:48,725 INFO L130 BoogieDeclarations]: Found specification of procedure istrstr [2020-10-27 20:37:48,725 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncpy [2020-10-27 20:37:48,725 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcpy [2020-10-27 20:37:48,725 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcat [2020-10-27 20:37:48,725 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncat [2020-10-27 20:37:48,726 INFO L130 BoogieDeclarations]: Found specification of procedure r_memcpy [2020-10-27 20:37:48,726 INFO L130 BoogieDeclarations]: Found specification of procedure parse_expression_list [2020-10-27 20:37:48,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 20:37:48,726 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 20:37:48,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 20:37:48,727 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 20:37:48,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 20:37:48,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 20:37:48,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 20:37:49,582 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 20:37:49,582 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-27 20:37:49,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:37:49 BoogieIcfgContainer [2020-10-27 20:37:49,585 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 20:37:49,589 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 20:37:49,590 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 20:37:49,594 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 20:37:49,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 08:37:48" (1/3) ... [2020-10-27 20:37:49,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b435992 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:37:49, skipping insertion in model container [2020-10-27 20:37:49,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:37:48" (2/3) ... [2020-10-27 20:37:49,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b435992 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:37:49, skipping insertion in model container [2020-10-27 20:37:49,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:37:49" (3/3) ... [2020-10-27 20:37:49,599 INFO L111 eAbstractionObserver]: Analyzing ICFG verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-10-27 20:37:49,609 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 20:37:49,614 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 20:37:49,626 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 20:37:49,654 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 20:37:49,654 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 20:37:49,654 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 20:37:49,655 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 20:37:49,655 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 20:37:49,655 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 20:37:49,655 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 20:37:49,655 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 20:37:49,674 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2020-10-27 20:37:49,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-27 20:37:49,681 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:37:49,682 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] [2020-10-27 20:37:49,682 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:37:49,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:37:49,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1243057979, now seen corresponding path program 1 times [2020-10-27 20:37:49,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:37:49,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1605533769] [2020-10-27 20:37:49,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:37:49,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:37:49,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:49,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:50,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:50,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:50,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:51,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:53,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:37:53,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-27 20:37:53,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 20:37:53,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3652 [2020-10-27 20:37:53,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:37:53,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:37:53,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 20:37:53,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:37:53,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 20:37:53,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:37:53,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:37:53,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:53,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:37:53,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:37:53,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:37:53,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 20:37:53,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:37:53,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:37:53,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:37:53,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:37:53,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:37:53,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 20:37:53,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:37:53,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:53,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:37:53,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:37:53,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:37:53,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:37:53,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:37:53,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:37:53,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 20:37:53,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:37:53,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 20:37:53,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:37:53,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1605533769] [2020-10-27 20:37:53,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:37:53,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 20:37:53,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085962802] [2020-10-27 20:37:53,656 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-27 20:37:53,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:37:53,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-27 20:37:53,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 20:37:53,675 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 3 states. [2020-10-27 20:37:53,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:37:53,917 INFO L93 Difference]: Finished difference Result 100 states and 133 transitions. [2020-10-27 20:37:53,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 20:37:53,919 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-10-27 20:37:53,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:37:53,928 INFO L225 Difference]: With dead ends: 100 [2020-10-27 20:37:53,928 INFO L226 Difference]: Without dead ends: 45 [2020-10-27 20:37:53,932 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 20:37:53,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-27 20:37:53,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-10-27 20:37:53,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-27 20:37:53,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2020-10-27 20:37:53,979 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 31 [2020-10-27 20:37:53,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:37:53,979 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2020-10-27 20:37:53,979 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-27 20:37:53,980 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2020-10-27 20:37:53,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-27 20:37:53,981 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:37:53,981 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] [2020-10-27 20:37:53,982 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 20:37:53,982 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:37:53,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:37:53,983 INFO L82 PathProgramCache]: Analyzing trace with hash 1651644, now seen corresponding path program 1 times [2020-10-27 20:37:53,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:37:53,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [224745923] [2020-10-27 20:37:53,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:37:54,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:37:54,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:54,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:54,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:54,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:54,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:54,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:54,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:54,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:55,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:55,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:55,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:56,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:56,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:59,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:37:59,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 20:37:59,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 20:37:59,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 20:37:59,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:37:59,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:37:59,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-27 20:37:59,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 20:37:59,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 20:37:59,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:37:59,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:37:59,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:59,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:37:59,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:37:59,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:37:59,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 20:37:59,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:37:59,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:37:59,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:37:59,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:37:59,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 20:37:59,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-27 20:37:59,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:37:59,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:59,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:37:59,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:37:59,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:37:59,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:37:59,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:37:59,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:37:59,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 20:37:59,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:37:59,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 20:37:59,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:37:59,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [224745923] [2020-10-27 20:37:59,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:37:59,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 20:37:59,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130113946] [2020-10-27 20:37:59,207 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 20:37:59,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:37:59,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 20:37:59,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 20:37:59,214 INFO L87 Difference]: Start difference. First operand 45 states and 54 transitions. Second operand 6 states. [2020-10-27 20:37:59,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:37:59,638 INFO L93 Difference]: Finished difference Result 107 states and 137 transitions. [2020-10-27 20:37:59,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 20:37:59,638 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2020-10-27 20:37:59,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:37:59,643 INFO L225 Difference]: With dead ends: 107 [2020-10-27 20:37:59,643 INFO L226 Difference]: Without dead ends: 71 [2020-10-27 20:37:59,644 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 20:37:59,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-27 20:37:59,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 53. [2020-10-27 20:37:59,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-27 20:37:59,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 65 transitions. [2020-10-27 20:37:59,678 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 65 transitions. Word has length 35 [2020-10-27 20:37:59,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:37:59,679 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 65 transitions. [2020-10-27 20:37:59,679 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 20:37:59,679 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 65 transitions. [2020-10-27 20:37:59,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-27 20:37:59,680 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:37:59,681 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] [2020-10-27 20:37:59,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 20:37:59,681 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:37:59,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:37:59,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1596271620, now seen corresponding path program 1 times [2020-10-27 20:37:59,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:37:59,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1861203095] [2020-10-27 20:37:59,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:37:59,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:37:59,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:59,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:59,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:59,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:59,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:59,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:59,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:59,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:00,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:00,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:00,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:01,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:03,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:03,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:04,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:38:04,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 20:38:04,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 20:38:04,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 20:38:04,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:38:04,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:38:04,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-27 20:38:04,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 20:38:04,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:38:04,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:38:04,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:38:04,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:04,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:38:04,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:38:04,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:38:04,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 20:38:04,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:38:04,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:38:04,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:38:04,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:38:04,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:38:04,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-27 20:38:04,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:38:04,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:04,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:38:04,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:38:04,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:38:04,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:38:04,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:38:04,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:38:04,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 20:38:04,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:38:04,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:38:04,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:38:04,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1861203095] [2020-10-27 20:38:04,795 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:38:04,795 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 20:38:04,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996357978] [2020-10-27 20:38:04,796 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 20:38:04,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:38:04,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 20:38:04,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 20:38:04,797 INFO L87 Difference]: Start difference. First operand 53 states and 65 transitions. Second operand 4 states. [2020-10-27 20:38:05,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:38:05,098 INFO L93 Difference]: Finished difference Result 98 states and 123 transitions. [2020-10-27 20:38:05,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 20:38:05,099 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-10-27 20:38:05,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:38:05,100 INFO L225 Difference]: With dead ends: 98 [2020-10-27 20:38:05,100 INFO L226 Difference]: Without dead ends: 54 [2020-10-27 20:38:05,102 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 [2020-10-27 20:38:05,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-27 20:38:05,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-10-27 20:38:05,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-27 20:38:05,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 66 transitions. [2020-10-27 20:38:05,111 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 66 transitions. Word has length 35 [2020-10-27 20:38:05,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:38:05,112 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 66 transitions. [2020-10-27 20:38:05,112 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 20:38:05,112 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 66 transitions. [2020-10-27 20:38:05,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-27 20:38:05,113 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:38:05,113 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] [2020-10-27 20:38:05,114 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 20:38:05,114 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:38:05,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:38:05,115 INFO L82 PathProgramCache]: Analyzing trace with hash 893257342, now seen corresponding path program 1 times [2020-10-27 20:38:05,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:38:05,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [675535492] [2020-10-27 20:38:05,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:38:05,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:38:05,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:05,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:05,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:05,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:05,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:05,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:05,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:05,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:05,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:05,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:06,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:10,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:38:10,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 20:38:10,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 20:38:10,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 20:38:10,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:38:10,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 20:38:10,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 20:38:10,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 20:38:10,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:38:10,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:38:10,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:38:10,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:10,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:38:10,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:38:10,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:38:10,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 20:38:10,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:38:10,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:38:10,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:38:10,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:38:10,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:38:10,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-27 20:38:10,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:38:10,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:10,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:38:10,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:38:10,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:38:10,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 20:38:10,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:38:10,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:38:10,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:38:10,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 20:38:10,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:38:10,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:38:10,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [675535492] [2020-10-27 20:38:10,343 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:38:10,343 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 20:38:10,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018257417] [2020-10-27 20:38:10,344 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 20:38:10,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:38:10,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 20:38:10,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-27 20:38:10,345 INFO L87 Difference]: Start difference. First operand 54 states and 66 transitions. Second operand 9 states. [2020-10-27 20:38:10,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:38:10,969 INFO L93 Difference]: Finished difference Result 164 states and 215 transitions. [2020-10-27 20:38:10,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 20:38:10,970 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2020-10-27 20:38:10,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:38:10,973 INFO L225 Difference]: With dead ends: 164 [2020-10-27 20:38:10,973 INFO L226 Difference]: Without dead ends: 110 [2020-10-27 20:38:10,975 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2020-10-27 20:38:10,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-27 20:38:10,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 76. [2020-10-27 20:38:10,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-27 20:38:10,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 97 transitions. [2020-10-27 20:38:10,988 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 97 transitions. Word has length 35 [2020-10-27 20:38:10,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:38:10,989 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 97 transitions. [2020-10-27 20:38:10,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 20:38:10,989 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 97 transitions. [2020-10-27 20:38:10,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-27 20:38:10,990 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:38:10,990 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] [2020-10-27 20:38:10,991 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 20:38:10,991 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:38:10,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:38:10,992 INFO L82 PathProgramCache]: Analyzing trace with hash 75608892, now seen corresponding path program 1 times [2020-10-27 20:38:10,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:38:10,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1314054585] [2020-10-27 20:38:10,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:38:11,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:38:11,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:11,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:11,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:11,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:11,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:11,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:12,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:38:12,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 20:38:12,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 20:38:12,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1631 [2020-10-27 20:38:12,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:38:12,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 20:38:12,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 20:38:12,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 20:38:12,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:38:12,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:38:12,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:38:12,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:12,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:38:12,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:38:12,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:38:12,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 20:38:12,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:38:12,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:38:12,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:38:12,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:38:12,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:38:12,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-27 20:38:12,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:38:12,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:12,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:38:12,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:38:12,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:38:12,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 20:38:12,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:38:12,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:38:12,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:38:12,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 20:38:12,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:38:12,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:38:12,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1314054585] [2020-10-27 20:38:12,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:38:12,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 20:38:12,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60084003] [2020-10-27 20:38:12,864 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 20:38:12,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:38:12,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 20:38:12,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-27 20:38:12,867 INFO L87 Difference]: Start difference. First operand 76 states and 97 transitions. Second operand 8 states. [2020-10-27 20:38:13,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:38:13,388 INFO L93 Difference]: Finished difference Result 113 states and 145 transitions. [2020-10-27 20:38:13,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 20:38:13,389 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 35 [2020-10-27 20:38:13,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:38:13,390 INFO L225 Difference]: With dead ends: 113 [2020-10-27 20:38:13,391 INFO L226 Difference]: Without dead ends: 109 [2020-10-27 20:38:13,391 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-10-27 20:38:13,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-27 20:38:13,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 100. [2020-10-27 20:38:13,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-27 20:38:13,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 129 transitions. [2020-10-27 20:38:13,403 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 129 transitions. Word has length 35 [2020-10-27 20:38:13,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:38:13,404 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 129 transitions. [2020-10-27 20:38:13,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 20:38:13,404 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 129 transitions. [2020-10-27 20:38:13,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-27 20:38:13,409 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:38:13,409 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] [2020-10-27 20:38:13,409 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 20:38:13,409 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:38:13,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:38:13,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1590178681, now seen corresponding path program 1 times [2020-10-27 20:38:13,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:38:13,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1536717887] [2020-10-27 20:38:13,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:38:13,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:38:13,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:13,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:13,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:13,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:13,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:14,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:14,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:18,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:38:18,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-27 20:38:18,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 20:38:18,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 20:38:18,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:38:18,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 20:38:18,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 20:38:18,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 20:38:18,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:38:18,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:38:18,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:38:18,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:18,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:38:18,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:38:18,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:38:18,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:38:18,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:38:18,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:38:18,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:38:18,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:38:18,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:38:18,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-27 20:38:18,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:38:18,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:18,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:38:18,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:38:18,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:38:18,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 20:38:18,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:38:18,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:38:18,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 20:38:18,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:38:18,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:38:18,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:38:18,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1536717887] [2020-10-27 20:38:18,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:38:18,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 20:38:18,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576337281] [2020-10-27 20:38:18,561 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 20:38:18,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:38:18,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 20:38:18,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 20:38:18,562 INFO L87 Difference]: Start difference. First operand 100 states and 129 transitions. Second operand 5 states. [2020-10-27 20:38:18,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:38:18,783 INFO L93 Difference]: Finished difference Result 168 states and 216 transitions. [2020-10-27 20:38:18,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 20:38:18,785 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2020-10-27 20:38:18,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:38:18,788 INFO L225 Difference]: With dead ends: 168 [2020-10-27 20:38:18,789 INFO L226 Difference]: Without dead ends: 110 [2020-10-27 20:38:18,790 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 [2020-10-27 20:38:18,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-27 20:38:18,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2020-10-27 20:38:18,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-27 20:38:18,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 139 transitions. [2020-10-27 20:38:18,800 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 139 transitions. Word has length 37 [2020-10-27 20:38:18,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:38:18,801 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 139 transitions. [2020-10-27 20:38:18,801 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 20:38:18,801 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 139 transitions. [2020-10-27 20:38:18,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-27 20:38:18,802 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:38:18,802 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] [2020-10-27 20:38:18,802 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 20:38:18,802 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:38:18,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:38:18,803 INFO L82 PathProgramCache]: Analyzing trace with hash -403966025, now seen corresponding path program 1 times [2020-10-27 20:38:18,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:38:18,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [161221408] [2020-10-27 20:38:18,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:38:18,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:38:18,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:18,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:18,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:18,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:18,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:21,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:38:21,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-27 20:38:21,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 20:38:21,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2358 [2020-10-27 20:38:21,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:38:21,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 20:38:21,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 20:38:21,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 20:38:21,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:38:21,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:38:21,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:38:21,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:21,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:38:21,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:38:21,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:38:21,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 20:38:21,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:38:21,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:38:21,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:38:21,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:38:21,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:38:21,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-27 20:38:21,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:38:21,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:21,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:38:21,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:38:21,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:38:21,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:38:21,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:38:21,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:38:21,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 20:38:21,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:38:21,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 20:38:21,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:38:21,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [161221408] [2020-10-27 20:38:21,321 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:38:21,321 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 20:38:21,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310428038] [2020-10-27 20:38:21,323 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 20:38:21,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:38:21,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 20:38:21,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-27 20:38:21,325 INFO L87 Difference]: Start difference. First operand 110 states and 139 transitions. Second operand 7 states. [2020-10-27 20:38:21,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:38:21,797 INFO L93 Difference]: Finished difference Result 316 states and 411 transitions. [2020-10-27 20:38:21,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 20:38:21,797 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2020-10-27 20:38:21,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:38:21,800 INFO L225 Difference]: With dead ends: 316 [2020-10-27 20:38:21,800 INFO L226 Difference]: Without dead ends: 186 [2020-10-27 20:38:21,801 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-27 20:38:21,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-27 20:38:21,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 127. [2020-10-27 20:38:21,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-10-27 20:38:21,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 158 transitions. [2020-10-27 20:38:21,819 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 158 transitions. Word has length 37 [2020-10-27 20:38:21,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:38:21,820 INFO L481 AbstractCegarLoop]: Abstraction has 127 states and 158 transitions. [2020-10-27 20:38:21,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 20:38:21,820 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 158 transitions. [2020-10-27 20:38:21,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-27 20:38:21,821 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:38:21,821 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] [2020-10-27 20:38:21,822 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 20:38:21,822 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:38:21,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:38:21,822 INFO L82 PathProgramCache]: Analyzing trace with hash -185111307, now seen corresponding path program 1 times [2020-10-27 20:38:21,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:38:21,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1015825798] [2020-10-27 20:38:21,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:38:21,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:38:21,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:21,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:21,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:21,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:22,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:38:22,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-27 20:38:22,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 20:38:22,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 710 [2020-10-27 20:38:22,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:38:22,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 20:38:22,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 20:38:22,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 20:38:22,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:38:22,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:38:22,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:38:22,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:22,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:38:22,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:38:22,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:38:22,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:38:22,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:38:22,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:38:22,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:38:22,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:38:22,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:38:22,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-27 20:38:22,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:38:22,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:22,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:38:22,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:38:22,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:38:22,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 20:38:22,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:38:22,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:38:22,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 20:38:22,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:38:22,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:38:22,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:38:22,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1015825798] [2020-10-27 20:38:22,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:38:22,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 20:38:22,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103785732] [2020-10-27 20:38:22,671 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 20:38:22,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:38:22,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 20:38:22,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 20:38:22,673 INFO L87 Difference]: Start difference. First operand 127 states and 158 transitions. Second operand 7 states. [2020-10-27 20:38:23,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:38:23,039 INFO L93 Difference]: Finished difference Result 240 states and 297 transitions. [2020-10-27 20:38:23,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 20:38:23,040 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2020-10-27 20:38:23,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:38:23,041 INFO L225 Difference]: With dead ends: 240 [2020-10-27 20:38:23,041 INFO L226 Difference]: Without dead ends: 154 [2020-10-27 20:38:23,042 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-27 20:38:23,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-27 20:38:23,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 118. [2020-10-27 20:38:23,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-27 20:38:23,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 143 transitions. [2020-10-27 20:38:23,054 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 143 transitions. Word has length 37 [2020-10-27 20:38:23,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:38:23,054 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 143 transitions. [2020-10-27 20:38:23,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 20:38:23,055 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 143 transitions. [2020-10-27 20:38:23,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-27 20:38:23,056 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:38:23,056 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] [2020-10-27 20:38:23,057 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 20:38:23,057 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:38:23,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:38:23,057 INFO L82 PathProgramCache]: Analyzing trace with hash -764578183, now seen corresponding path program 1 times [2020-10-27 20:38:23,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:38:23,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1895761522] [2020-10-27 20:38:23,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:38:23,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:38:23,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:23,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:23,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:23,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:24,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:38:24,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-27 20:38:24,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 20:38:24,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1265 [2020-10-27 20:38:24,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:38:24,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 20:38:24,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 20:38:24,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 20:38:24,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:38:24,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:38:24,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:38:24,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:24,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:38:24,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:38:24,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:38:24,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:38:24,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:38:24,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:38:24,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:38:24,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:38:24,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:38:24,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 20:38:24,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:38:24,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:24,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:38:24,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:38:24,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:38:24,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 20:38:24,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:38:24,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:38:24,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 20:38:24,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:38:24,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:38:24,476 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:38:24,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1895761522] [2020-10-27 20:38:24,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:38:24,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 20:38:24,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166728150] [2020-10-27 20:38:24,479 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 20:38:24,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:38:24,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 20:38:24,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-27 20:38:24,487 INFO L87 Difference]: Start difference. First operand 118 states and 143 transitions. Second operand 8 states. [2020-10-27 20:38:25,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:38:25,049 INFO L93 Difference]: Finished difference Result 283 states and 347 transitions. [2020-10-27 20:38:25,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 20:38:25,051 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 42 [2020-10-27 20:38:25,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:38:25,053 INFO L225 Difference]: With dead ends: 283 [2020-10-27 20:38:25,053 INFO L226 Difference]: Without dead ends: 230 [2020-10-27 20:38:25,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-27 20:38:25,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-10-27 20:38:25,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 178. [2020-10-27 20:38:25,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-10-27 20:38:25,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 221 transitions. [2020-10-27 20:38:25,083 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 221 transitions. Word has length 42 [2020-10-27 20:38:25,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:38:25,083 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 221 transitions. [2020-10-27 20:38:25,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 20:38:25,084 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 221 transitions. [2020-10-27 20:38:25,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-27 20:38:25,094 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:38:25,095 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] [2020-10-27 20:38:25,095 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 20:38:25,096 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:38:25,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:38:25,097 INFO L82 PathProgramCache]: Analyzing trace with hash -1640570633, now seen corresponding path program 2 times [2020-10-27 20:38:25,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:38:25,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1453312912] [2020-10-27 20:38:25,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:38:25,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:38:25,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:25,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:25,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:38:25,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-27 20:38:25,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 20:38:25,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-10-27 20:38:25,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:38:25,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 20:38:25,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 20:38:25,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 20:38:25,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:38:25,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:38:25,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:38:25,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:25,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:38:25,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:38:25,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:38:25,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:38:25,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:38:25,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:38:25,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:38:25,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:38:25,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:38:25,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 20:38:25,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:38:25,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:25,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:38:25,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:38:25,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:38:25,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 20:38:25,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:38:25,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:38:25,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 20:38:25,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:38:25,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:38:25,532 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:38:25,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1453312912] [2020-10-27 20:38:25,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:38:25,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 20:38:25,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515839325] [2020-10-27 20:38:25,533 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 20:38:25,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:38:25,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 20:38:25,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-27 20:38:25,534 INFO L87 Difference]: Start difference. First operand 178 states and 221 transitions. Second operand 9 states. [2020-10-27 20:38:26,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:38:26,392 INFO L93 Difference]: Finished difference Result 498 states and 636 transitions. [2020-10-27 20:38:26,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 20:38:26,393 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 47 [2020-10-27 20:38:26,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:38:26,395 INFO L225 Difference]: With dead ends: 498 [2020-10-27 20:38:26,396 INFO L226 Difference]: Without dead ends: 240 [2020-10-27 20:38:26,397 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-10-27 20:38:26,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-10-27 20:38:26,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 173. [2020-10-27 20:38:26,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-10-27 20:38:26,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 210 transitions. [2020-10-27 20:38:26,414 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 210 transitions. Word has length 47 [2020-10-27 20:38:26,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:38:26,414 INFO L481 AbstractCegarLoop]: Abstraction has 173 states and 210 transitions. [2020-10-27 20:38:26,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 20:38:26,414 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 210 transitions. [2020-10-27 20:38:26,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-27 20:38:26,421 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:38:26,421 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] [2020-10-27 20:38:26,421 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 20:38:26,421 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:38:26,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:38:26,422 INFO L82 PathProgramCache]: Analyzing trace with hash 2067590649, now seen corresponding path program 1 times [2020-10-27 20:38:26,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:38:26,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [131543546] [2020-10-27 20:38:26,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:38:26,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:38:26,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:26,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:38:26,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-27 20:38:26,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:38:26,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-27 20:38:26,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:38:26,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 20:38:26,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 20:38:26,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-27 20:38:26,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:38:26,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:38:26,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:38:26,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:26,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:38:26,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:38:26,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:38:26,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:38:26,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:38:26,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:38:26,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:38:26,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:38:26,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:38:26,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 20:38:26,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:38:26,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:26,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:38:26,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:38:26,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:38:26,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:38:26,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:38:26,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:38:26,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:38:26,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 20:38:26,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:38:26,808 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:38:26,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [131543546] [2020-10-27 20:38:26,809 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:38:26,809 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 20:38:26,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110481714] [2020-10-27 20:38:26,810 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 20:38:26,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:38:26,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 20:38:26,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-27 20:38:26,811 INFO L87 Difference]: Start difference. First operand 173 states and 210 transitions. Second operand 10 states. [2020-10-27 20:38:27,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:38:27,626 INFO L93 Difference]: Finished difference Result 250 states and 302 transitions. [2020-10-27 20:38:27,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 20:38:27,627 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 47 [2020-10-27 20:38:27,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:38:27,630 INFO L225 Difference]: With dead ends: 250 [2020-10-27 20:38:27,630 INFO L226 Difference]: Without dead ends: 246 [2020-10-27 20:38:27,630 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2020-10-27 20:38:27,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-10-27 20:38:27,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 168. [2020-10-27 20:38:27,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-10-27 20:38:27,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 204 transitions. [2020-10-27 20:38:27,643 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 204 transitions. Word has length 47 [2020-10-27 20:38:27,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:38:27,643 INFO L481 AbstractCegarLoop]: Abstraction has 168 states and 204 transitions. [2020-10-27 20:38:27,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 20:38:27,644 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 204 transitions. [2020-10-27 20:38:27,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-27 20:38:27,644 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:38:27,645 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] [2020-10-27 20:38:27,645 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 20:38:27,645 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:38:27,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:38:27,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1421715915, now seen corresponding path program 1 times [2020-10-27 20:38:27,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:38:27,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [899687583] [2020-10-27 20:38:27,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:38:27,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:38:27,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:27,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:38:27,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-27 20:38:27,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:38:27,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-27 20:38:27,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:38:27,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 20:38:27,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 20:38:27,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-27 20:38:27,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:38:27,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:38:27,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:38:27,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:27,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:38:27,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:38:27,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:38:27,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:38:27,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:38:27,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:38:27,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:38:27,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:38:27,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:38:27,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 20:38:27,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:38:27,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:27,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:38:27,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:38:27,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:38:27,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:38:27,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:38:27,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:38:27,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:38:27,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 20:38:27,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:38:27,946 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:38:27,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [899687583] [2020-10-27 20:38:27,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:38:27,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 20:38:27,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944774927] [2020-10-27 20:38:27,947 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 20:38:27,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:38:27,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 20:38:27,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-27 20:38:27,948 INFO L87 Difference]: Start difference. First operand 168 states and 204 transitions. Second operand 11 states. [2020-10-27 20:38:28,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:38:28,840 INFO L93 Difference]: Finished difference Result 274 states and 336 transitions. [2020-10-27 20:38:28,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 20:38:28,841 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 47 [2020-10-27 20:38:28,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:38:28,846 INFO L225 Difference]: With dead ends: 274 [2020-10-27 20:38:28,846 INFO L226 Difference]: Without dead ends: 270 [2020-10-27 20:38:28,847 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2020-10-27 20:38:28,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2020-10-27 20:38:28,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 195. [2020-10-27 20:38:28,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-10-27 20:38:28,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 245 transitions. [2020-10-27 20:38:28,861 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 245 transitions. Word has length 47 [2020-10-27 20:38:28,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:38:28,862 INFO L481 AbstractCegarLoop]: Abstraction has 195 states and 245 transitions. [2020-10-27 20:38:28,862 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 20:38:28,862 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 245 transitions. [2020-10-27 20:38:28,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-27 20:38:28,863 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:38:28,863 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] [2020-10-27 20:38:28,863 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 20:38:28,863 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:38:28,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:38:28,864 INFO L82 PathProgramCache]: Analyzing trace with hash -2008521929, now seen corresponding path program 1 times [2020-10-27 20:38:28,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:38:28,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1729082025] [2020-10-27 20:38:28,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:38:28,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 20:38:28,877 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 20:38:28,877 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 20:38:28,880 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 20:38:28,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 08:38:28 BoogieIcfgContainer [2020-10-27 20:38:28,901 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 20:38:28,903 INFO L168 Benchmark]: Toolchain (without parser) took 40706.84 ms. Allocated memory was 151.0 MB in the beginning and 453.0 MB in the end (delta: 302.0 MB). Free memory was 126.6 MB in the beginning and 181.8 MB in the end (delta: -55.2 MB). Peak memory consumption was 247.9 MB. Max. memory is 8.0 GB. [2020-10-27 20:38:28,904 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 151.0 MB. Free memory was 123.4 MB in the beginning and 123.3 MB in the end (delta: 74.9 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 20:38:28,905 INFO L168 Benchmark]: CACSL2BoogieTranslator took 350.27 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 114.6 MB in the end (delta: 11.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-27 20:38:28,905 INFO L168 Benchmark]: Boogie Preprocessor took 64.33 ms. Allocated memory is still 151.0 MB. Free memory was 114.6 MB in the beginning and 112.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 20:38:28,906 INFO L168 Benchmark]: RCFGBuilder took 965.59 ms. Allocated memory is still 151.0 MB. Free memory was 112.6 MB in the beginning and 122.7 MB in the end (delta: -10.2 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. [2020-10-27 20:38:28,907 INFO L168 Benchmark]: TraceAbstraction took 39311.58 ms. Allocated memory was 151.0 MB in the beginning and 453.0 MB in the end (delta: 302.0 MB). Free memory was 122.2 MB in the beginning and 181.8 MB in the end (delta: -59.6 MB). Peak memory consumption was 244.0 MB. Max. memory is 8.0 GB. [2020-10-27 20:38:28,910 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 151.0 MB. Free memory was 123.4 MB in the beginning and 123.3 MB in the end (delta: 74.9 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 350.27 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 114.6 MB in the end (delta: 11.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 64.33 ms. Allocated memory is still 151.0 MB. Free memory was 114.6 MB in the beginning and 112.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 965.59 ms. Allocated memory is still 151.0 MB. Free memory was 112.6 MB in the beginning and 122.7 MB in the end (delta: -10.2 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 39311.58 ms. Allocated memory was 151.0 MB in the beginning and 453.0 MB in the end (delta: 302.0 MB). Free memory was 122.2 MB in the beginning and 181.8 MB in the end (delta: -59.6 MB). Peak memory consumption was 244.0 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: 39.2s, OverallIterations: 13, TraceHistogramMax: 3, AutomataDifference: 6.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 566 SDtfs, 1119 SDslu, 1417 SDs, 0 SdLazy, 1955 SolverSat, 325 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 166 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=195occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 428 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 32.0s InterpolantComputationTime, 512 NumberOfCodeBlocks, 512 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 453 ConstructedInterpolants, 0 QuantifiedInterpolants, 50744 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 8 PerfectInterpolantSequences, 0/29 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...