/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/forester-heap/sll-rb-sentinel-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:12:37,505 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:12:37,509 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:12:37,536 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:12:37,537 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:12:37,538 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:12:37,540 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:12:37,542 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:12:37,544 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:12:37,545 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:12:37,546 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:12:37,547 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:12:37,547 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:12:37,549 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:12:37,550 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:12:37,551 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:12:37,552 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:12:37,553 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:12:37,555 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:12:37,557 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:12:37,559 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:12:37,561 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:12:37,562 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:12:37,563 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:12:37,566 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:12:37,566 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:12:37,567 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:12:37,568 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:12:37,568 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:12:37,569 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:12:37,570 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:12:37,571 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:12:37,572 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:12:37,573 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:12:37,574 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:12:37,574 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:12:37,575 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:12:37,575 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:12:37,575 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:12:37,578 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:12:37,579 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:12:37,582 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 11:12:37,636 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:12:37,639 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:12:37,640 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:12:37,641 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:12:37,641 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:12:37,641 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:12:37,641 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:12:37,641 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:12:37,642 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:12:37,642 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:12:37,642 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:12:37,642 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:12:37,642 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:12:37,643 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:12:37,643 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:12:37,643 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:12:37,643 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:12:37,643 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:12:37,644 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:12:37,644 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:12:37,644 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:12:37,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:12:37,644 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:12:37,645 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:12:37,645 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:12:37,645 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:12:37,645 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:12:37,645 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:12:37,646 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:12:37,646 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 11:12:38,167 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:12:38,193 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:12:38,198 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:12:38,201 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:12:38,201 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:12:38,203 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-rb-sentinel-2.i [2020-09-25 11:12:38,295 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/229ac1c6b/ea39d68d591545bd9a2d722f9d31eb91/FLAG056554e0f [2020-09-25 11:12:38,948 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:12:38,949 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/sll-rb-sentinel-2.i [2020-09-25 11:12:38,965 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/229ac1c6b/ea39d68d591545bd9a2d722f9d31eb91/FLAG056554e0f [2020-09-25 11:12:39,183 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/229ac1c6b/ea39d68d591545bd9a2d722f9d31eb91 [2020-09-25 11:12:39,197 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:12:39,202 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:12:39,203 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:12:39,204 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:12:39,208 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:12:39,209 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:12:39" (1/1) ... [2020-09-25 11:12:39,214 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64fec7e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:12:39, skipping insertion in model container [2020-09-25 11:12:39,214 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:12:39" (1/1) ... [2020-09-25 11:12:39,225 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:12:39,299 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:12:39,827 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:12:39,844 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:12:39,905 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:12:39,988 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:12:39,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:12:39 WrapperNode [2020-09-25 11:12:39,990 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:12:39,991 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:12:39,996 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:12:39,996 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:12:40,010 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:12:39" (1/1) ... [2020-09-25 11:12:40,011 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:12:39" (1/1) ... [2020-09-25 11:12:40,030 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:12:39" (1/1) ... [2020-09-25 11:12:40,030 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:12:39" (1/1) ... [2020-09-25 11:12:40,047 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:12:39" (1/1) ... [2020-09-25 11:12:40,055 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:12:39" (1/1) ... [2020-09-25 11:12:40,059 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:12:39" (1/1) ... [2020-09-25 11:12:40,065 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:12:40,066 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:12:40,066 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:12:40,066 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:12:40,068 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:12:39" (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 11:12:40,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:12:40,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:12:40,159 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:12:40,159 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 11:12:40,160 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 11:12:40,160 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 11:12:40,161 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 11:12:40,162 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 11:12:40,162 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 11:12:40,162 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 11:12:40,163 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 11:12:40,163 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 11:12:40,163 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 11:12:40,163 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 11:12:40,163 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 11:12:40,166 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 11:12:40,166 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 11:12:40,166 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 11:12:40,166 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 11:12:40,167 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 11:12:40,168 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 11:12:40,168 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 11:12:40,169 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 11:12:40,169 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 11:12:40,169 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 11:12:40,170 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 11:12:40,171 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 11:12:40,171 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 11:12:40,172 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 11:12:40,172 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 11:12:40,172 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 11:12:40,172 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 11:12:40,172 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 11:12:40,172 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 11:12:40,173 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 11:12:40,173 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 11:12:40,173 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 11:12:40,174 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 11:12:40,174 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 11:12:40,174 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 11:12:40,174 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 11:12:40,175 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 11:12:40,175 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 11:12:40,175 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 11:12:40,175 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 11:12:40,175 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 11:12:40,175 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 11:12:40,175 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 11:12:40,175 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 11:12:40,176 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 11:12:40,176 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 11:12:40,176 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 11:12:40,176 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 11:12:40,176 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 11:12:40,176 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 11:12:40,176 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 11:12:40,177 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 11:12:40,177 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 11:12:40,177 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 11:12:40,177 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 11:12:40,177 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 11:12:40,177 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 11:12:40,177 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 11:12:40,177 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 11:12:40,178 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 11:12:40,178 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 11:12:40,178 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 11:12:40,178 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 11:12:40,178 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 11:12:40,178 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 11:12:40,179 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 11:12:40,179 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 11:12:40,179 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 11:12:40,180 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 11:12:40,180 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 11:12:40,180 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 11:12:40,180 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 11:12:40,180 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 11:12:40,180 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 11:12:40,181 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 11:12:40,181 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 11:12:40,181 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 11:12:40,181 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 11:12:40,181 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 11:12:40,181 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 11:12:40,181 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 11:12:40,182 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 11:12:40,182 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 11:12:40,182 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 11:12:40,182 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 11:12:40,182 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 11:12:40,182 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 11:12:40,182 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 11:12:40,183 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 11:12:40,183 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 11:12:40,183 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 11:12:40,183 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 11:12:40,183 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 11:12:40,183 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 11:12:40,183 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 11:12:40,183 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 11:12:40,184 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 11:12:40,184 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 11:12:40,184 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 11:12:40,184 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 11:12:40,184 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 11:12:40,184 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:12:40,184 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:12:40,184 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:12:40,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 11:12:40,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 11:12:40,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 11:12:40,185 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 11:12:40,185 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 11:12:40,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 11:12:40,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:12:40,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:12:40,847 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:12:40,847 INFO L295 CfgBuilder]: Removed 11 assume(true) statements. [2020-09-25 11:12:40,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:12:40 BoogieIcfgContainer [2020-09-25 11:12:40,852 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:12:40,854 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:12:40,854 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:12:40,858 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:12:40,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:12:39" (1/3) ... [2020-09-25 11:12:40,859 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21e8c5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:12:40, skipping insertion in model container [2020-09-25 11:12:40,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:12:39" (2/3) ... [2020-09-25 11:12:40,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21e8c5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:12:40, skipping insertion in model container [2020-09-25 11:12:40,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:12:40" (3/3) ... [2020-09-25 11:12:40,863 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-rb-sentinel-2.i [2020-09-25 11:12:40,874 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:12:40,885 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-09-25 11:12:40,907 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-25 11:12:40,934 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:12:40,935 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:12:40,935 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:12:40,935 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:12:40,935 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:12:40,935 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:12:40,935 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:12:40,936 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:12:40,962 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states. [2020-09-25 11:12:40,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-25 11:12:40,971 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:12:40,972 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] [2020-09-25 11:12:40,973 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:12:40,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:12:40,981 INFO L82 PathProgramCache]: Analyzing trace with hash -159181327, now seen corresponding path program 1 times [2020-09-25 11:12:40,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:12:40,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [144447791] [2020-09-25 11:12:40,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:12:41,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:12:41,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:12:41,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:12:41,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:12:41,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 11:12:41,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:12:41,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 719 [2020-09-25 11:12:41,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:12:41,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:12:41,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:12:41,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 11:12:41,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 11:12:41,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 11:12:41,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:12:41,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:12:41,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:12:42,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:12:42,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:12:42,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:12:42,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 11:12:42,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:12:42,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:12:42,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:12:42,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:12:42,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:12:42,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:12:42,021 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 11:12:42,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [144447791] [2020-09-25 11:12:42,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:12:42,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 11:12:42,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827313744] [2020-09-25 11:12:42,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 11:12:42,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:12:42,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 11:12:42,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:12:42,055 INFO L87 Difference]: Start difference. First operand 98 states. Second operand 8 states. [2020-09-25 11:12:42,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:12:42,499 INFO L93 Difference]: Finished difference Result 205 states and 253 transitions. [2020-09-25 11:12:42,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 11:12:42,501 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-09-25 11:12:42,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:12:42,515 INFO L225 Difference]: With dead ends: 205 [2020-09-25 11:12:42,515 INFO L226 Difference]: Without dead ends: 90 [2020-09-25 11:12:42,519 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-09-25 11:12:42,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-09-25 11:12:42,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 72. [2020-09-25 11:12:42,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-09-25 11:12:42,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 75 transitions. [2020-09-25 11:12:42,564 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 75 transitions. Word has length 21 [2020-09-25 11:12:42,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:12:42,565 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 75 transitions. [2020-09-25 11:12:42,565 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 11:12:42,565 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 75 transitions. [2020-09-25 11:12:42,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-25 11:12:42,566 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:12:42,567 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] [2020-09-25 11:12:42,567 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:12:42,567 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:12:42,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:12:42,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1518762392, now seen corresponding path program 1 times [2020-09-25 11:12:42,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:12:42,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [60449567] [2020-09-25 11:12:42,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:12:42,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:12:42,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:12:42,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:12:42,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 11:12:42,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:12:42,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-09-25 11:12:42,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:12:42,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:12:42,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:12:42,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 11:12:42,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 11:12:42,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:12:42,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:12:42,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:12:42,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:12:42,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:12:42,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:12:42,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:12:42,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 11:12:42,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:12:42,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:12:42,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:12:42,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:12:42,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:12:42,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:12:42,853 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 11:12:42,853 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [60449567] [2020-09-25 11:12:42,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:12:42,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 11:12:42,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399576450] [2020-09-25 11:12:42,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 11:12:42,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:12:42,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 11:12:42,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:12:42,857 INFO L87 Difference]: Start difference. First operand 72 states and 75 transitions. Second operand 6 states. [2020-09-25 11:12:43,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:12:43,105 INFO L93 Difference]: Finished difference Result 120 states and 126 transitions. [2020-09-25 11:12:43,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 11:12:43,106 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-09-25 11:12:43,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:12:43,108 INFO L225 Difference]: With dead ends: 120 [2020-09-25 11:12:43,108 INFO L226 Difference]: Without dead ends: 117 [2020-09-25 11:12:43,109 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:12:43,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-09-25 11:12:43,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 81. [2020-09-25 11:12:43,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-09-25 11:12:43,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2020-09-25 11:12:43,122 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 27 [2020-09-25 11:12:43,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:12:43,123 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2020-09-25 11:12:43,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 11:12:43,123 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2020-09-25 11:12:43,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-25 11:12:43,125 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:12:43,125 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:12:43,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:12:43,126 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:12:43,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:12:43,126 INFO L82 PathProgramCache]: Analyzing trace with hash 2047332937, now seen corresponding path program 1 times [2020-09-25 11:12:43,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:12:43,127 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2137138709] [2020-09-25 11:12:43,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:12:43,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:12:43,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:12:43,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:12:43,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:12:43,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 11:12:43,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:12:43,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 489 [2020-09-25 11:12:43,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:12:43,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:12:43,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:12:43,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-09-25 11:12:43,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 11:12:43,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:12:43,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:12:43,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:12:43,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:12:43,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:12:43,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:12:43,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:12:43,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 11:12:43,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:12:43,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:12:43,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:12:43,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:12:43,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:12:43,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:12:43,777 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 11:12:43,777 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2137138709] [2020-09-25 11:12:43,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:12:43,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 11:12:43,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92163238] [2020-09-25 11:12:43,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 11:12:43,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:12:43,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 11:12:43,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:12:43,780 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand 6 states. [2020-09-25 11:12:43,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:12:43,978 INFO L93 Difference]: Finished difference Result 136 states and 143 transitions. [2020-09-25 11:12:43,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 11:12:43,978 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-09-25 11:12:43,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:12:43,980 INFO L225 Difference]: With dead ends: 136 [2020-09-25 11:12:43,980 INFO L226 Difference]: Without dead ends: 114 [2020-09-25 11:12:43,981 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:12:43,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-09-25 11:12:43,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 86. [2020-09-25 11:12:43,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-09-25 11:12:43,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 90 transitions. [2020-09-25 11:12:43,991 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 90 transitions. Word has length 36 [2020-09-25 11:12:43,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:12:43,992 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 90 transitions. [2020-09-25 11:12:43,992 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 11:12:43,992 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 90 transitions. [2020-09-25 11:12:43,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-25 11:12:43,993 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:12:43,994 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] [2020-09-25 11:12:43,994 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:12:43,994 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:12:43,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:12:43,995 INFO L82 PathProgramCache]: Analyzing trace with hash -1237644091, now seen corresponding path program 1 times [2020-09-25 11:12:43,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:12:43,995 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [153136292] [2020-09-25 11:12:43,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:12:44,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:12:44,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:12:44,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:12:44,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 11:12:44,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:12:44,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 784 [2020-09-25 11:12:44,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:12:44,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:12:44,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 11:12:44,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 11:12:44,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 11:12:44,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:12:45,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:12:45,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:12:45,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:12:45,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:12:45,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:12:45,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:12:45,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 11:12:45,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:12:45,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:12:45,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:12:45,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:12:45,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:12:45,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:12:45,582 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:12:45,584 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [153136292] [2020-09-25 11:12:45,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:12:45,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 11:12:45,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20565029] [2020-09-25 11:12:45,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 11:12:45,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:12:45,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 11:12:45,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2020-09-25 11:12:45,623 INFO L87 Difference]: Start difference. First operand 86 states and 90 transitions. Second operand 15 states. [2020-09-25 11:12:46,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:12:46,884 INFO L93 Difference]: Finished difference Result 166 states and 175 transitions. [2020-09-25 11:12:46,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 11:12:46,884 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 40 [2020-09-25 11:12:46,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:12:46,886 INFO L225 Difference]: With dead ends: 166 [2020-09-25 11:12:46,886 INFO L226 Difference]: Without dead ends: 163 [2020-09-25 11:12:46,889 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=192, Invalid=564, Unknown=0, NotChecked=0, Total=756 [2020-09-25 11:12:46,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-09-25 11:12:46,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 106. [2020-09-25 11:12:46,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-09-25 11:12:46,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 112 transitions. [2020-09-25 11:12:46,916 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 112 transitions. Word has length 40 [2020-09-25 11:12:46,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:12:46,919 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 112 transitions. [2020-09-25 11:12:46,920 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 11:12:46,920 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 112 transitions. [2020-09-25 11:12:46,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-25 11:12:46,924 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:12:46,925 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:12:46,925 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:12:46,925 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:12:46,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:12:46,926 INFO L82 PathProgramCache]: Analyzing trace with hash 1411163060, now seen corresponding path program 1 times [2020-09-25 11:12:46,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:12:46,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [837066891] [2020-09-25 11:12:46,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:12:46,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:12:46,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:12:47,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:12:47,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:12:48,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:12:48,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:12:49,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:12:51,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:12:51,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:12:51,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:12:51,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-25 11:12:51,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 11:12:51,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4919 [2020-09-25 11:12:51,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:12:51,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:12:51,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 11:12:51,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-09-25 11:12:51,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 11:12:51,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:12:52,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:12:52,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:12:52,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:12:52,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:12:52,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:12:52,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:12:52,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 11:12:52,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:12:52,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:12:52,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:12:52,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:12:52,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:12:52,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:12:52,289 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:12:52,289 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [837066891] [2020-09-25 11:12:52,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:12:52,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 11:12:52,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090194986] [2020-09-25 11:12:52,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 11:12:52,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:12:52,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 11:12:52,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-09-25 11:12:52,292 INFO L87 Difference]: Start difference. First operand 106 states and 112 transitions. Second operand 14 states. [2020-09-25 11:12:53,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:12:53,276 INFO L93 Difference]: Finished difference Result 160 states and 169 transitions. [2020-09-25 11:12:53,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 11:12:53,276 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 43 [2020-09-25 11:12:53,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:12:53,278 INFO L225 Difference]: With dead ends: 160 [2020-09-25 11:12:53,278 INFO L226 Difference]: Without dead ends: 138 [2020-09-25 11:12:53,279 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=201, Invalid=555, Unknown=0, NotChecked=0, Total=756 [2020-09-25 11:12:53,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-09-25 11:12:53,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 113. [2020-09-25 11:12:53,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-09-25 11:12:53,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 119 transitions. [2020-09-25 11:12:53,292 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 119 transitions. Word has length 43 [2020-09-25 11:12:53,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:12:53,292 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 119 transitions. [2020-09-25 11:12:53,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 11:12:53,293 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 119 transitions. [2020-09-25 11:12:53,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-25 11:12:53,296 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:12:53,296 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] [2020-09-25 11:12:53,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:12:53,298 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:12:53,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:12:53,299 INFO L82 PathProgramCache]: Analyzing trace with hash -1215747511, now seen corresponding path program 1 times [2020-09-25 11:12:53,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:12:53,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [134583688] [2020-09-25 11:12:53,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:12:53,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:12:53,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:12:54,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:12:54,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 11:12:54,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:12:54,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1321 [2020-09-25 11:12:54,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:12:54,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:12:54,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 11:12:54,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 11:12:54,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 11:12:54,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:12:55,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:12:55,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:12:55,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:12:55,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:12:55,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:12:55,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:12:55,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 11:12:55,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:12:55,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:12:55,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:12:55,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:12:55,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:12:55,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:12:55,679 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:12:55,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [134583688] [2020-09-25 11:12:55,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:12:55,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-25 11:12:55,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896088086] [2020-09-25 11:12:55,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-25 11:12:55,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:12:55,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-25 11:12:55,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2020-09-25 11:12:55,682 INFO L87 Difference]: Start difference. First operand 113 states and 119 transitions. Second operand 19 states. [2020-09-25 11:12:57,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:12:57,500 INFO L93 Difference]: Finished difference Result 188 states and 198 transitions. [2020-09-25 11:12:57,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-25 11:12:57,501 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 47 [2020-09-25 11:12:57,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:12:57,502 INFO L225 Difference]: With dead ends: 188 [2020-09-25 11:12:57,503 INFO L226 Difference]: Without dead ends: 185 [2020-09-25 11:12:57,504 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=285, Invalid=1121, Unknown=0, NotChecked=0, Total=1406 [2020-09-25 11:12:57,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-09-25 11:12:57,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 122. [2020-09-25 11:12:57,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-09-25 11:12:57,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 128 transitions. [2020-09-25 11:12:57,515 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 128 transitions. Word has length 47 [2020-09-25 11:12:57,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:12:57,515 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 128 transitions. [2020-09-25 11:12:57,515 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-25 11:12:57,516 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 128 transitions. [2020-09-25 11:12:57,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-25 11:12:57,517 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:12:57,517 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] [2020-09-25 11:12:57,517 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 11:12:57,518 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:12:57,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:12:57,518 INFO L82 PathProgramCache]: Analyzing trace with hash 632390076, now seen corresponding path program 1 times [2020-09-25 11:12:57,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:12:57,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [357850710] [2020-09-25 11:12:57,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:12:57,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:12:57,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:12:57,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:12:58,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:01,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:02,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:02,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:02,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 11:13:02,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:13:02,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 11:13:02,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:02,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:02,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:13:02,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-09-25 11:13:02,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 11:13:02,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:13:02,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:13:02,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:02,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:02,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:02,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:13:02,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:13:02,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 11:13:02,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:02,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:02,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:13:02,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:13:02,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:13:02,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:13:02,660 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 11:13:02,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [357850710] [2020-09-25 11:13:02,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:13:02,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 11:13:02,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415158731] [2020-09-25 11:13:02,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 11:13:02,663 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:13:02,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 11:13:02,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:13:02,663 INFO L87 Difference]: Start difference. First operand 122 states and 128 transitions. Second operand 6 states. [2020-09-25 11:13:02,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:13:02,845 INFO L93 Difference]: Finished difference Result 150 states and 158 transitions. [2020-09-25 11:13:02,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 11:13:02,845 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2020-09-25 11:13:02,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:13:02,847 INFO L225 Difference]: With dead ends: 150 [2020-09-25 11:13:02,847 INFO L226 Difference]: Without dead ends: 128 [2020-09-25 11:13:02,848 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:13:02,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-09-25 11:13:02,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 122. [2020-09-25 11:13:02,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-09-25 11:13:02,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 128 transitions. [2020-09-25 11:13:02,856 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 128 transitions. Word has length 49 [2020-09-25 11:13:02,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:13:02,856 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 128 transitions. [2020-09-25 11:13:02,856 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 11:13:02,857 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 128 transitions. [2020-09-25 11:13:02,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-09-25 11:13:02,858 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:13:02,858 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:13:02,858 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 11:13:02,858 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:13:02,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:13:02,859 INFO L82 PathProgramCache]: Analyzing trace with hash -62360599, now seen corresponding path program 2 times [2020-09-25 11:13:02,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:13:02,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1643324586] [2020-09-25 11:13:02,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:13:02,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:02,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:03,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:03,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-25 11:13:03,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:13:03,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-09-25 11:13:03,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:03,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:03,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:13:03,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 11:13:03,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 11:13:03,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:13:03,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:13:03,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:03,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:03,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:03,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:13:03,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:13:03,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 11:13:03,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:03,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:03,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:13:03,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:13:03,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:13:03,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:13:03,125 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 11:13:03,126 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1643324586] [2020-09-25 11:13:03,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:13:03,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 11:13:03,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937862962] [2020-09-25 11:13:03,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:13:03,127 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:13:03,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:13:03,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:13:03,128 INFO L87 Difference]: Start difference. First operand 122 states and 128 transitions. Second operand 7 states. [2020-09-25 11:13:03,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:13:03,367 INFO L93 Difference]: Finished difference Result 147 states and 154 transitions. [2020-09-25 11:13:03,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 11:13:03,367 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 50 [2020-09-25 11:13:03,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:13:03,369 INFO L225 Difference]: With dead ends: 147 [2020-09-25 11:13:03,369 INFO L226 Difference]: Without dead ends: 106 [2020-09-25 11:13:03,371 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:13:03,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-09-25 11:13:03,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2020-09-25 11:13:03,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-09-25 11:13:03,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 111 transitions. [2020-09-25 11:13:03,377 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 111 transitions. Word has length 50 [2020-09-25 11:13:03,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:13:03,378 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 111 transitions. [2020-09-25 11:13:03,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:13:03,378 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 111 transitions. [2020-09-25 11:13:03,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 11:13:03,379 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:13:03,379 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:13:03,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 11:13:03,380 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:13:03,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:13:03,380 INFO L82 PathProgramCache]: Analyzing trace with hash 231328440, now seen corresponding path program 2 times [2020-09-25 11:13:03,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:13:03,381 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [190934944] [2020-09-25 11:13:03,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:13:03,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:03,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:04,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:04,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 11:13:04,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:13:04,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1162 [2020-09-25 11:13:04,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:04,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:04,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 11:13:04,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 11:13:04,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 11:13:04,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:13:05,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:13:05,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:05,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:05,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:05,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:13:05,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:13:05,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 11:13:05,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:05,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:05,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:13:05,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:13:05,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:13:05,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:13:05,511 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:13:05,517 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [190934944] [2020-09-25 11:13:05,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:13:05,518 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-25 11:13:05,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26313866] [2020-09-25 11:13:05,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-25 11:13:05,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:13:05,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-25 11:13:05,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2020-09-25 11:13:05,519 INFO L87 Difference]: Start difference. First operand 106 states and 111 transitions. Second operand 19 states. [2020-09-25 11:13:07,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:13:07,096 INFO L93 Difference]: Finished difference Result 186 states and 195 transitions. [2020-09-25 11:13:07,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-25 11:13:07,097 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 53 [2020-09-25 11:13:07,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:13:07,099 INFO L225 Difference]: With dead ends: 186 [2020-09-25 11:13:07,099 INFO L226 Difference]: Without dead ends: 183 [2020-09-25 11:13:07,100 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=317, Invalid=1015, Unknown=0, NotChecked=0, Total=1332 [2020-09-25 11:13:07,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-09-25 11:13:07,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 119. [2020-09-25 11:13:07,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-09-25 11:13:07,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 126 transitions. [2020-09-25 11:13:07,115 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 126 transitions. Word has length 53 [2020-09-25 11:13:07,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:13:07,115 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 126 transitions. [2020-09-25 11:13:07,115 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-25 11:13:07,115 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 126 transitions. [2020-09-25 11:13:07,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 11:13:07,117 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:13:07,117 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] [2020-09-25 11:13:07,118 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 11:13:07,118 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:13:07,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:13:07,118 INFO L82 PathProgramCache]: Analyzing trace with hash -2144912159, now seen corresponding path program 1 times [2020-09-25 11:13:07,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:13:07,119 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1941634535] [2020-09-25 11:13:07,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:13:07,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:07,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:07,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:07,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:07,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:08,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:09,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:10,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:11,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:11,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 11:13:11,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:13:11,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4552 [2020-09-25 11:13:11,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:11,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:11,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 11:13:11,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-09-25 11:13:11,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 11:13:11,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:13:11,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:13:11,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:12,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:12,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:12,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:13:12,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:13:12,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 11:13:12,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:12,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:12,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:13:12,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:13:12,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:13:12,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:13:12,015 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:13:12,015 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1941634535] [2020-09-25 11:13:12,015 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:13:12,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 11:13:12,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148766471] [2020-09-25 11:13:12,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 11:13:12,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:13:12,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 11:13:12,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2020-09-25 11:13:12,017 INFO L87 Difference]: Start difference. First operand 119 states and 126 transitions. Second operand 15 states. [2020-09-25 11:13:13,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:13:13,013 INFO L93 Difference]: Finished difference Result 188 states and 198 transitions. [2020-09-25 11:13:13,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 11:13:13,014 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 56 [2020-09-25 11:13:13,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:13:13,015 INFO L225 Difference]: With dead ends: 188 [2020-09-25 11:13:13,015 INFO L226 Difference]: Without dead ends: 166 [2020-09-25 11:13:13,016 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=159, Invalid=711, Unknown=0, NotChecked=0, Total=870 [2020-09-25 11:13:13,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-09-25 11:13:13,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 135. [2020-09-25 11:13:13,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-09-25 11:13:13,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 142 transitions. [2020-09-25 11:13:13,023 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 142 transitions. Word has length 56 [2020-09-25 11:13:13,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:13:13,024 INFO L479 AbstractCegarLoop]: Abstraction has 135 states and 142 transitions. [2020-09-25 11:13:13,024 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 11:13:13,024 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 142 transitions. [2020-09-25 11:13:13,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-25 11:13:13,025 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:13:13,025 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:13:13,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 11:13:13,025 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:13:13,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:13:13,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1025074422, now seen corresponding path program 1 times [2020-09-25 11:13:13,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:13:13,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2092881864] [2020-09-25 11:13:13,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:13:13,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:13,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:14,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:14,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 11:13:14,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:13:14,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1868 [2020-09-25 11:13:14,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:14,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:14,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-25 11:13:14,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 11:13:14,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 11:13:14,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:13:15,667 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 33 [2020-09-25 11:13:16,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:13:16,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:16,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:16,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:16,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:13:16,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:13:16,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:13:16,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:16,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:16,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:13:16,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:13:16,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:13:16,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:13:16,123 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:13:16,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2092881864] [2020-09-25 11:13:16,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:13:16,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-09-25 11:13:16,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671516698] [2020-09-25 11:13:16,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-25 11:13:16,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:13:16,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-25 11:13:16,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=491, Unknown=0, NotChecked=0, Total=600 [2020-09-25 11:13:16,126 INFO L87 Difference]: Start difference. First operand 135 states and 142 transitions. Second operand 25 states. [2020-09-25 11:13:16,698 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 51 [2020-09-25 11:13:19,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:13:19,178 INFO L93 Difference]: Finished difference Result 163 states and 173 transitions. [2020-09-25 11:13:19,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-09-25 11:13:19,179 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 60 [2020-09-25 11:13:19,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:13:19,180 INFO L225 Difference]: With dead ends: 163 [2020-09-25 11:13:19,181 INFO L226 Difference]: Without dead ends: 160 [2020-09-25 11:13:19,182 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=640, Invalid=2116, Unknown=0, NotChecked=0, Total=2756 [2020-09-25 11:13:19,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-09-25 11:13:19,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 103. [2020-09-25 11:13:19,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-09-25 11:13:19,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 108 transitions. [2020-09-25 11:13:19,188 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 108 transitions. Word has length 60 [2020-09-25 11:13:19,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:13:19,189 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 108 transitions. [2020-09-25 11:13:19,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-09-25 11:13:19,189 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 108 transitions. [2020-09-25 11:13:19,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 11:13:19,190 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:13:19,190 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:13:19,190 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 11:13:19,191 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:13:19,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:13:19,191 INFO L82 PathProgramCache]: Analyzing trace with hash -412836324, now seen corresponding path program 2 times [2020-09-25 11:13:19,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:13:19,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [420360520] [2020-09-25 11:13:19,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:13:19,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:19,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:19,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:20,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:20,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:21,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:21,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:22,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:23,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:23,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:23,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:24,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:24,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-25 11:13:24,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 11:13:24,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5090 [2020-09-25 11:13:24,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:24,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:24,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 11:13:24,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 11:13:24,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-25 11:13:24,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:13:25,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:13:25,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:25,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:25,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:25,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:13:25,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:13:25,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 11:13:25,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:25,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:25,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:13:25,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:13:25,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:13:25,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:13:25,332 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:13:25,333 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [420360520] [2020-09-25 11:13:25,333 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:13:25,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-25 11:13:25,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449854832] [2020-09-25 11:13:25,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-25 11:13:25,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:13:25,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-25 11:13:25,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=458, Unknown=0, NotChecked=0, Total=506 [2020-09-25 11:13:25,336 INFO L87 Difference]: Start difference. First operand 103 states and 108 transitions. Second operand 23 states. [2020-09-25 11:13:25,872 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 51 [2020-09-25 11:13:26,058 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 56 [2020-09-25 11:13:26,243 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2020-09-25 11:13:26,455 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-09-25 11:13:26,639 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2020-09-25 11:13:26,938 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 56