/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:24:04,965 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:24:04,970 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:24:05,015 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:24:05,016 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:24:05,022 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:24:05,024 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:24:05,027 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:24:05,032 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:24:05,034 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:24:05,035 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:24:05,036 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:24:05,037 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:24:05,041 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:24:05,044 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:24:05,045 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:24:05,047 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:24:05,048 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:24:05,049 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:24:05,059 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:24:05,061 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:24:05,063 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:24:05,064 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:24:05,065 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:24:05,077 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:24:05,077 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:24:05,078 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:24:05,079 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:24:05,079 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:24:05,080 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:24:05,080 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:24:05,081 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:24:05,082 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:24:05,083 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:24:05,084 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:24:05,084 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:24:05,085 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:24:05,085 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:24:05,086 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:24:05,087 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:24:05,088 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:24:05,088 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 11:24:05,118 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:24:05,118 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:24:05,119 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:24:05,120 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:24:05,120 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:24:05,120 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:24:05,121 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:24:05,121 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:24:05,121 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:24:05,121 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:24:05,121 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:24:05,122 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:24:05,122 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:24:05,122 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:24:05,122 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:24:05,122 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:24:05,123 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:24:05,123 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:24:05,123 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:24:05,123 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:24:05,124 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:24:05,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:24:05,124 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:24:05,124 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:24:05,125 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:24:05,125 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:24:05,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:24:05,125 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:24:05,125 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:24:05,126 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-09-25 11:24:05,618 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:24:05,644 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:24:05,651 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:24:05,653 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:24:05,654 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:24:05,655 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-09-25 11:24:05,733 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e513f5ee0/d20921a383864b448c2c64d749c94f6e/FLAG8a31f7a9c [2020-09-25 11:24:06,255 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:24:06,255 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-09-25 11:24:06,264 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e513f5ee0/d20921a383864b448c2c64d749c94f6e/FLAG8a31f7a9c [2020-09-25 11:24:06,574 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e513f5ee0/d20921a383864b448c2c64d749c94f6e [2020-09-25 11:24:06,590 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:24:06,597 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:24:06,598 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:24:06,598 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:24:06,603 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:24:06,604 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:24:06" (1/1) ... [2020-09-25 11:24:06,609 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27030054 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:24:06, skipping insertion in model container [2020-09-25 11:24:06,610 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:24:06" (1/1) ... [2020-09-25 11:24:06,619 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:24:06,648 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:24:06,952 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:24:06,972 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:24:07,100 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:24:07,132 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:24:07,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:24:07 WrapperNode [2020-09-25 11:24:07,134 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:24:07,135 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:24:07,135 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:24:07,135 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:24:07,149 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:24:07" (1/1) ... [2020-09-25 11:24:07,150 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:24:07" (1/1) ... [2020-09-25 11:24:07,163 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:24:07" (1/1) ... [2020-09-25 11:24:07,163 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:24:07" (1/1) ... [2020-09-25 11:24:07,176 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:24:07" (1/1) ... [2020-09-25 11:24:07,183 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:24:07" (1/1) ... [2020-09-25 11:24:07,185 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:24:07" (1/1) ... [2020-09-25 11:24:07,189 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:24:07,190 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:24:07,190 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:24:07,190 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:24:07,192 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:24:07" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:24:07,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:24:07,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:24:07,270 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 11:24:07,270 INFO L138 BoogieDeclarations]: Found implementation of procedure r_strncpy [2020-09-25 11:24:07,271 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_expression_list [2020-09-25 11:24:07,271 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:24:07,271 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:24:07,271 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 11:24:07,271 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2020-09-25 11:24:07,272 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2020-09-25 11:24:07,272 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2020-09-25 11:24:07,272 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2020-09-25 11:24:07,272 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy_ptr [2020-09-25 11:24:07,272 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2020-09-25 11:24:07,273 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2020-09-25 11:24:07,273 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2020-09-25 11:24:07,273 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2020-09-25 11:24:07,273 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2020-09-25 11:24:07,273 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-09-25 11:24:07,274 INFO L130 BoogieDeclarations]: Found specification of procedure isascii [2020-09-25 11:24:07,274 INFO L130 BoogieDeclarations]: Found specification of procedure isspace [2020-09-25 11:24:07,274 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-09-25 11:24:07,274 INFO L130 BoogieDeclarations]: Found specification of procedure strrand [2020-09-25 11:24:07,274 INFO L130 BoogieDeclarations]: Found specification of procedure istrrand [2020-09-25 11:24:07,275 INFO L130 BoogieDeclarations]: Found specification of procedure istrchr [2020-09-25 11:24:07,275 INFO L130 BoogieDeclarations]: Found specification of procedure istrrchr [2020-09-25 11:24:07,275 INFO L130 BoogieDeclarations]: Found specification of procedure istrncmp [2020-09-25 11:24:07,275 INFO L130 BoogieDeclarations]: Found specification of procedure istrstr [2020-09-25 11:24:07,275 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncpy [2020-09-25 11:24:07,275 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcpy [2020-09-25 11:24:07,275 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcat [2020-09-25 11:24:07,276 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncat [2020-09-25 11:24:07,276 INFO L130 BoogieDeclarations]: Found specification of procedure r_memcpy [2020-09-25 11:24:07,276 INFO L130 BoogieDeclarations]: Found specification of procedure parse_expression_list [2020-09-25 11:24:07,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 11:24:07,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 11:24:07,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 11:24:07,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 11:24:07,277 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:24:07,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:24:07,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:24:07,716 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:24:07,717 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-25 11:24:07,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:24:07 BoogieIcfgContainer [2020-09-25 11:24:07,724 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:24:07,725 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:24:07,725 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:24:07,729 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:24:07,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:24:06" (1/3) ... [2020-09-25 11:24:07,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1300d155 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:24:07, skipping insertion in model container [2020-09-25 11:24:07,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:24:07" (2/3) ... [2020-09-25 11:24:07,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1300d155 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:24:07, skipping insertion in model container [2020-09-25 11:24:07,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:24:07" (3/3) ... [2020-09-25 11:24:07,734 INFO L109 eAbstractionObserver]: Analyzing ICFG verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-09-25 11:24:07,746 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:24:07,758 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:24:07,781 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:24:07,815 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:24:07,816 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:24:07,816 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:24:07,816 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:24:07,816 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:24:07,816 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:24:07,817 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:24:07,817 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:24:07,844 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states. [2020-09-25 11:24:07,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-25 11:24:07,855 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:24:07,856 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:24:07,857 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:24:07,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:24:07,864 INFO L82 PathProgramCache]: Analyzing trace with hash 2116113079, now seen corresponding path program 1 times [2020-09-25 11:24:07,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:24:07,875 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1281098541] [2020-09-25 11:24:07,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:24:08,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:08,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:08,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:08,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:08,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:08,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:09,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:10,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:10,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 11:24:10,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:24:10,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2317 [2020-09-25 11:24:10,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:10,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:10,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:24:10,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 11:24:10,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 11:24:10,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 11:24:10,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:24:10,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:10,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:10,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:10,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:24:10,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:24:10,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 11:24:10,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:10,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:10,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:24:10,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:24:10,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:24:10,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:24:10,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 11:24:10,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:10,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:10,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:10,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 11:24:10,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:24:10,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 11:24:10,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:10,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:10,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:24:10,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:24:10,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 11:24:10,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:24:10,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:24:10,663 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1281098541] [2020-09-25 11:24:10,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:24:10,666 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 11:24:10,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709627199] [2020-09-25 11:24:10,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 11:24:10,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:24:10,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 11:24:10,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:24:10,696 INFO L87 Difference]: Start difference. First operand 123 states. Second operand 8 states. [2020-09-25 11:24:11,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:24:11,361 INFO L93 Difference]: Finished difference Result 325 states and 377 transitions. [2020-09-25 11:24:11,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 11:24:11,363 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 48 [2020-09-25 11:24:11,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:24:11,385 INFO L225 Difference]: With dead ends: 325 [2020-09-25 11:24:11,385 INFO L226 Difference]: Without dead ends: 189 [2020-09-25 11:24:11,393 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-09-25 11:24:11,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-09-25 11:24:11,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 159. [2020-09-25 11:24:11,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-09-25 11:24:11,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 178 transitions. [2020-09-25 11:24:11,515 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 178 transitions. Word has length 48 [2020-09-25 11:24:11,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:24:11,516 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 178 transitions. [2020-09-25 11:24:11,516 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 11:24:11,516 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 178 transitions. [2020-09-25 11:24:11,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-25 11:24:11,521 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:24:11,521 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:24:11,521 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:24:11,522 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:24:11,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:24:11,522 INFO L82 PathProgramCache]: Analyzing trace with hash 279562443, now seen corresponding path program 1 times [2020-09-25 11:24:11,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:24:11,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [24530713] [2020-09-25 11:24:11,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:24:11,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:11,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:11,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:11,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:11,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:11,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:12,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:14,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:15,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:15,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:16,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:16,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 11:24:16,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 11:24:16,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 11:24:16,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:16,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:16,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:24:16,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 11:24:16,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 11:24:16,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:24:16,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:24:16,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:16,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:16,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:16,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:24:16,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:24:16,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 11:24:16,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:16,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:16,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:24:16,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:24:16,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:24:16,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:24:16,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-25 11:24:16,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:16,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:16,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:16,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 11:24:16,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:24:16,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 11:24:16,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:16,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:16,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:24:16,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:24:16,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 11:24:16,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:24:16,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:24:16,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [24530713] [2020-09-25 11:24:16,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:24:16,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 11:24:16,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842138621] [2020-09-25 11:24:16,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 11:24:16,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:24:16,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 11:24:16,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:24:16,753 INFO L87 Difference]: Start difference. First operand 159 states and 178 transitions. Second operand 8 states. [2020-09-25 11:24:17,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:24:17,187 INFO L93 Difference]: Finished difference Result 228 states and 256 transitions. [2020-09-25 11:24:17,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 11:24:17,188 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 62 [2020-09-25 11:24:17,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:24:17,197 INFO L225 Difference]: With dead ends: 228 [2020-09-25 11:24:17,197 INFO L226 Difference]: Without dead ends: 226 [2020-09-25 11:24:17,198 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-09-25 11:24:17,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-09-25 11:24:17,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 168. [2020-09-25 11:24:17,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-09-25 11:24:17,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 189 transitions. [2020-09-25 11:24:17,236 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 189 transitions. Word has length 62 [2020-09-25 11:24:17,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:24:17,236 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 189 transitions. [2020-09-25 11:24:17,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 11:24:17,237 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 189 transitions. [2020-09-25 11:24:17,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 11:24:17,242 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:24:17,245 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:24:17,245 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:24:17,245 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:24:17,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:24:17,246 INFO L82 PathProgramCache]: Analyzing trace with hash -53936734, now seen corresponding path program 1 times [2020-09-25 11:24:17,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:24:17,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1506053779] [2020-09-25 11:24:17,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:24:17,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:17,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:17,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:17,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:17,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:17,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:18,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:18,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:18,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:18,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:22,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:22,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 11:24:22,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 11:24:22,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 11:24:22,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:22,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:22,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:24:22,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 11:24:22,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 11:24:22,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:24:22,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:24:22,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:22,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:22,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:22,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:24:22,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:24:22,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 11:24:22,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:22,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:22,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:24:22,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:24:22,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:24:22,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:24:22,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-25 11:24:22,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:22,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:22,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:22,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 11:24:22,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:24:22,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 11:24:22,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:22,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:22,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:24:22,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:24:22,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:24:22,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:24:22,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:24:22,376 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1506053779] [2020-09-25 11:24:22,376 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:24:22,377 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 11:24:22,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396654823] [2020-09-25 11:24:22,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 11:24:22,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:24:22,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 11:24:22,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:24:22,379 INFO L87 Difference]: Start difference. First operand 168 states and 189 transitions. Second operand 8 states. [2020-09-25 11:24:22,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:24:22,829 INFO L93 Difference]: Finished difference Result 341 states and 384 transitions. [2020-09-25 11:24:22,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 11:24:22,830 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-09-25 11:24:22,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:24:22,832 INFO L225 Difference]: With dead ends: 341 [2020-09-25 11:24:22,832 INFO L226 Difference]: Without dead ends: 252 [2020-09-25 11:24:22,834 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-09-25 11:24:22,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-09-25 11:24:22,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 199. [2020-09-25 11:24:22,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-09-25 11:24:22,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 225 transitions. [2020-09-25 11:24:22,848 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 225 transitions. Word has length 63 [2020-09-25 11:24:22,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:24:22,849 INFO L479 AbstractCegarLoop]: Abstraction has 199 states and 225 transitions. [2020-09-25 11:24:22,849 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 11:24:22,849 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 225 transitions. [2020-09-25 11:24:22,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 11:24:22,851 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:24:22,851 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:24:22,852 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:24:22,852 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:24:22,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:24:22,853 INFO L82 PathProgramCache]: Analyzing trace with hash 322027262, now seen corresponding path program 1 times [2020-09-25 11:24:22,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:24:22,853 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [409103612] [2020-09-25 11:24:22,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:24:22,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:22,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:22,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:22,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:22,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:23,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:23,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:23,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:24,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:24,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:24,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:27,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:27,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 11:24:27,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 11:24:27,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 11:24:27,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:27,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:27,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:24:27,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 11:24:27,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 11:24:27,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:24:27,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:24:27,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:27,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:27,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:27,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:24:27,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:24:27,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 11:24:27,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:27,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:27,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:24:27,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:24:27,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:24:27,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:24:27,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-25 11:24:27,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:27,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:27,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:27,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 11:24:27,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:24:27,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 11:24:27,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:27,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:27,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:24:27,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:24:27,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:24:27,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:24:27,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:24:27,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [409103612] [2020-09-25 11:24:27,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:24:27,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 11:24:27,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508320307] [2020-09-25 11:24:27,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 11:24:27,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:24:27,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 11:24:27,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:24:27,972 INFO L87 Difference]: Start difference. First operand 199 states and 225 transitions. Second operand 8 states. [2020-09-25 11:24:28,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:24:28,321 INFO L93 Difference]: Finished difference Result 321 states and 362 transitions. [2020-09-25 11:24:28,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 11:24:28,321 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-09-25 11:24:28,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:24:28,323 INFO L225 Difference]: With dead ends: 321 [2020-09-25 11:24:28,324 INFO L226 Difference]: Without dead ends: 229 [2020-09-25 11:24:28,325 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2020-09-25 11:24:28,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-09-25 11:24:28,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 200. [2020-09-25 11:24:28,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-09-25 11:24:28,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 226 transitions. [2020-09-25 11:24:28,336 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 226 transitions. Word has length 63 [2020-09-25 11:24:28,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:24:28,337 INFO L479 AbstractCegarLoop]: Abstraction has 200 states and 226 transitions. [2020-09-25 11:24:28,337 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 11:24:28,337 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 226 transitions. [2020-09-25 11:24:28,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-25 11:24:28,338 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:24:28,338 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:24:28,339 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:24:28,339 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:24:28,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:24:28,339 INFO L82 PathProgramCache]: Analyzing trace with hash -1192248927, now seen corresponding path program 1 times [2020-09-25 11:24:28,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:24:28,340 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1647298664] [2020-09-25 11:24:28,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:24:28,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:28,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:28,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:28,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:28,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:28,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:28,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:28,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:29,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:32,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:32,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:32,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:33,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:33,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 11:24:33,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 11:24:33,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 11:24:33,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:33,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:33,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:24:33,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 11:24:33,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 11:24:33,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:24:33,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:24:33,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:33,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:33,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:33,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:24:33,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:24:33,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 11:24:33,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:33,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:33,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:24:33,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:24:33,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:24:33,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:24:33,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 11:24:33,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:33,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:33,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:33,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 11:24:33,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:24:33,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 11:24:33,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:33,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:33,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:24:33,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:24:33,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 11:24:33,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:24:33,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:24:33,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1647298664] [2020-09-25 11:24:33,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:24:33,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 11:24:33,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128182990] [2020-09-25 11:24:33,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 11:24:33,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:24:33,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 11:24:33,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:24:33,525 INFO L87 Difference]: Start difference. First operand 200 states and 226 transitions. Second operand 9 states. [2020-09-25 11:24:33,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:24:33,980 INFO L93 Difference]: Finished difference Result 255 states and 286 transitions. [2020-09-25 11:24:33,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 11:24:33,981 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-09-25 11:24:33,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:24:33,983 INFO L225 Difference]: With dead ends: 255 [2020-09-25 11:24:33,983 INFO L226 Difference]: Without dead ends: 253 [2020-09-25 11:24:33,984 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2020-09-25 11:24:33,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-09-25 11:24:33,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 205. [2020-09-25 11:24:33,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-09-25 11:24:33,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 231 transitions. [2020-09-25 11:24:33,995 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 231 transitions. Word has length 65 [2020-09-25 11:24:33,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:24:33,995 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 231 transitions. [2020-09-25 11:24:33,996 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 11:24:33,996 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 231 transitions. [2020-09-25 11:24:33,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-09-25 11:24:33,997 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:24:33,997 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:24:33,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:24:33,998 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:24:33,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:24:33,998 INFO L82 PathProgramCache]: Analyzing trace with hash 2088092010, now seen corresponding path program 1 times [2020-09-25 11:24:33,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:24:33,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [824831172] [2020-09-25 11:24:33,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:24:34,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:34,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:34,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:34,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:34,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:34,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:34,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:34,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:35,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:37,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:37,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:37,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:37,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:39,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:39,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 11:24:39,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 11:24:39,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 11:24:39,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:39,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:39,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:24:39,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 11:24:39,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 11:24:39,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:24:39,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:24:39,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:39,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:39,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:39,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:24:39,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:24:39,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 11:24:39,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:39,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:39,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:24:39,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:24:39,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:24:39,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:24:39,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-25 11:24:39,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:39,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:39,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:39,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 11:24:39,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:24:39,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 11:24:39,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:39,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:39,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:24:39,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:24:39,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:24:39,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:24:39,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:24:39,125 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [824831172] [2020-09-25 11:24:39,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:24:39,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 11:24:39,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613194238] [2020-09-25 11:24:39,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 11:24:39,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:24:39,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 11:24:39,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:24:39,127 INFO L87 Difference]: Start difference. First operand 205 states and 231 transitions. Second operand 8 states. [2020-09-25 11:24:39,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:24:39,641 INFO L93 Difference]: Finished difference Result 614 states and 705 transitions. [2020-09-25 11:24:39,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 11:24:39,645 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 66 [2020-09-25 11:24:39,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:24:39,650 INFO L225 Difference]: With dead ends: 614 [2020-09-25 11:24:39,654 INFO L226 Difference]: Without dead ends: 498 [2020-09-25 11:24:39,655 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2020-09-25 11:24:39,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2020-09-25 11:24:39,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 293. [2020-09-25 11:24:39,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2020-09-25 11:24:39,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 334 transitions. [2020-09-25 11:24:39,681 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 334 transitions. Word has length 66 [2020-09-25 11:24:39,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:24:39,681 INFO L479 AbstractCegarLoop]: Abstraction has 293 states and 334 transitions. [2020-09-25 11:24:39,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 11:24:39,681 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 334 transitions. [2020-09-25 11:24:39,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 11:24:39,683 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:24:39,683 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:24:39,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 11:24:39,683 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:24:39,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:24:39,684 INFO L82 PathProgramCache]: Analyzing trace with hash -1110941080, now seen corresponding path program 1 times [2020-09-25 11:24:39,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:24:39,685 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [874054084] [2020-09-25 11:24:39,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:24:39,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:39,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:39,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:39,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:39,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:39,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:40,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:40,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:40,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:42,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:42,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:42,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:44,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:44,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 11:24:44,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 11:24:44,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 11:24:44,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:44,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:44,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:24:44,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 11:24:44,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 11:24:44,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:24:44,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:24:44,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:44,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:44,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:44,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:24:44,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:24:44,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 11:24:44,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:44,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:44,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:24:44,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:24:44,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:24:44,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:24:44,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-25 11:24:44,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:44,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:44,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:44,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 11:24:44,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:24:44,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 11:24:44,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:44,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:44,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:24:44,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:24:44,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:24:44,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:24:44,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:24:44,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [874054084] [2020-09-25 11:24:44,798 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:24:44,798 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 11:24:44,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219644397] [2020-09-25 11:24:44,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 11:24:44,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:24:44,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 11:24:44,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:24:44,800 INFO L87 Difference]: Start difference. First operand 293 states and 334 transitions. Second operand 8 states. [2020-09-25 11:24:45,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:24:45,337 INFO L93 Difference]: Finished difference Result 438 states and 495 transitions. [2020-09-25 11:24:45,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 11:24:45,338 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 67 [2020-09-25 11:24:45,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:24:45,341 INFO L225 Difference]: With dead ends: 438 [2020-09-25 11:24:45,342 INFO L226 Difference]: Without dead ends: 341 [2020-09-25 11:24:45,343 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-09-25 11:24:45,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2020-09-25 11:24:45,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 298. [2020-09-25 11:24:45,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-09-25 11:24:45,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 338 transitions. [2020-09-25 11:24:45,355 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 338 transitions. Word has length 67 [2020-09-25 11:24:45,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:24:45,355 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 338 transitions. [2020-09-25 11:24:45,356 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 11:24:45,356 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 338 transitions. [2020-09-25 11:24:45,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-25 11:24:45,357 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:24:45,357 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:24:45,357 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 11:24:45,358 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:24:45,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:24:45,358 INFO L82 PathProgramCache]: Analyzing trace with hash 1427185919, now seen corresponding path program 1 times [2020-09-25 11:24:45,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:24:45,358 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1711711142] [2020-09-25 11:24:45,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:24:45,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:45,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:45,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:45,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:45,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:45,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:45,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:45,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:46,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:50,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:50,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 11:24:50,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 11:24:50,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 11:24:50,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:50,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:50,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:24:50,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 11:24:50,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 11:24:50,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:24:50,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:24:50,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:50,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:50,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:50,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:24:50,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:24:50,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 11:24:50,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:50,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:50,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:24:50,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:24:50,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:24:50,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:24:50,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-25 11:24:50,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:50,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:50,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:50,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 11:24:50,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:24:50,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 11:24:50,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:50,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:50,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:24:50,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:24:50,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:24:50,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:24:50,472 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:24:50,473 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1711711142] [2020-09-25 11:24:50,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:24:50,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 11:24:50,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556515423] [2020-09-25 11:24:50,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 11:24:50,474 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:24:50,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 11:24:50,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:24:50,475 INFO L87 Difference]: Start difference. First operand 298 states and 338 transitions. Second operand 8 states. [2020-09-25 11:24:51,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:24:51,079 INFO L93 Difference]: Finished difference Result 512 states and 580 transitions. [2020-09-25 11:24:51,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 11:24:51,080 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 70 [2020-09-25 11:24:51,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:24:51,084 INFO L225 Difference]: With dead ends: 512 [2020-09-25 11:24:51,084 INFO L226 Difference]: Without dead ends: 415 [2020-09-25 11:24:51,085 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2020-09-25 11:24:51,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2020-09-25 11:24:51,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 361. [2020-09-25 11:24:51,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2020-09-25 11:24:51,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 412 transitions. [2020-09-25 11:24:51,099 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 412 transitions. Word has length 70 [2020-09-25 11:24:51,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:24:51,100 INFO L479 AbstractCegarLoop]: Abstraction has 361 states and 412 transitions. [2020-09-25 11:24:51,100 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 11:24:51,100 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 412 transitions. [2020-09-25 11:24:51,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 11:24:51,102 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:24:51,102 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:24:51,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 11:24:51,102 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:24:51,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:24:51,103 INFO L82 PathProgramCache]: Analyzing trace with hash -656915567, now seen corresponding path program 1 times [2020-09-25 11:24:51,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:24:51,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [363221863] [2020-09-25 11:24:51,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:24:51,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:51,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:51,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:51,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:51,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:51,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:51,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:51,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:51,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:55,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:56,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:56,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 11:24:56,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 11:24:56,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 11:24:56,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:56,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:56,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:24:56,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 11:24:56,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 11:24:56,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:24:56,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:24:56,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:56,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:56,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:56,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:24:56,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:24:56,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 11:24:56,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:56,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:56,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:24:56,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:24:56,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:24:56,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:24:56,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-25 11:24:56,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:56,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:56,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:56,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 11:24:56,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:24:56,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 11:24:56,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:56,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:56,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:24:56,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:24:56,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:24:56,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:24:56,235 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:24:56,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [363221863] [2020-09-25 11:24:56,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:24:56,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 11:24:56,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709133910] [2020-09-25 11:24:56,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 11:24:56,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:24:56,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 11:24:56,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-09-25 11:24:56,248 INFO L87 Difference]: Start difference. First operand 361 states and 412 transitions. Second operand 10 states. [2020-09-25 11:24:56,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:24:56,964 INFO L93 Difference]: Finished difference Result 591 states and 674 transitions. [2020-09-25 11:24:56,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 11:24:56,964 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 73 [2020-09-25 11:24:56,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:24:56,967 INFO L225 Difference]: With dead ends: 591 [2020-09-25 11:24:56,967 INFO L226 Difference]: Without dead ends: 494 [2020-09-25 11:24:56,968 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2020-09-25 11:24:56,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2020-09-25 11:24:56,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 382. [2020-09-25 11:24:56,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2020-09-25 11:24:56,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 436 transitions. [2020-09-25 11:24:56,984 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 436 transitions. Word has length 73 [2020-09-25 11:24:56,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:24:56,984 INFO L479 AbstractCegarLoop]: Abstraction has 382 states and 436 transitions. [2020-09-25 11:24:56,985 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 11:24:56,985 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 436 transitions. [2020-09-25 11:24:56,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-25 11:24:56,986 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:24:56,986 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:24:56,987 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 11:24:56,987 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:24:56,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:24:56,987 INFO L82 PathProgramCache]: Analyzing trace with hash -461529955, now seen corresponding path program 1 times [2020-09-25 11:24:56,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:24:56,988 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1833728778] [2020-09-25 11:24:56,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:24:56,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:57,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:57,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:57,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:57,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:57,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:57,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:58,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking...