/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 05:01:50,211 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 05:01:50,213 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 05:01:50,239 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 05:01:50,240 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 05:01:50,241 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 05:01:50,242 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 05:01:50,244 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 05:01:50,246 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 05:01:50,246 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 05:01:50,247 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 05:01:50,248 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 05:01:50,249 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 05:01:50,250 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 05:01:50,251 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 05:01:50,252 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 05:01:50,252 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 05:01:50,253 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 05:01:50,255 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 05:01:50,257 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 05:01:50,258 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 05:01:50,259 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 05:01:50,260 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 05:01:50,261 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 05:01:50,265 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 05:01:50,265 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 05:01:50,265 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 05:01:50,266 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 05:01:50,266 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 05:01:50,269 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 05:01:50,269 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 05:01:50,270 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 05:01:50,270 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 05:01:50,271 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 05:01:50,275 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 05:01:50,275 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 05:01:50,276 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 05:01:50,276 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 05:01:50,276 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 05:01:50,277 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 05:01:50,278 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 05:01:50,279 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 05:01:50,328 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 05:01:50,328 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 05:01:50,330 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 05:01:50,330 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 05:01:50,330 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 05:01:50,330 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 05:01:50,331 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 05:01:50,331 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 05:01:50,331 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 05:01:50,331 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 05:01:50,332 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 05:01:50,332 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 05:01:50,333 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 05:01:50,333 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 05:01:50,333 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 05:01:50,333 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 05:01:50,334 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 05:01:50,334 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 05:01:50,334 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 05:01:50,334 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 05:01:50,335 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 05:01:50,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 05:01:50,335 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 05:01:50,335 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 05:01:50,335 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 05:01:50,336 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 05:01:50,336 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 05:01:50,336 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 05:01:50,336 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 05:01:50,336 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 05:01:50,685 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 05:01:50,707 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 05:01:50,713 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 05:01:50,715 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 05:01:50,715 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 05:01:50,716 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-1.i [2020-10-14 05:01:50,789 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6c653d8bc/1d8f179bcb30441e89a6b89e540d8b21/FLAG6c92ef699 [2020-10-14 05:01:51,389 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 05:01:51,390 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-1.i [2020-10-14 05:01:51,406 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6c653d8bc/1d8f179bcb30441e89a6b89e540d8b21/FLAG6c92ef699 [2020-10-14 05:01:51,660 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6c653d8bc/1d8f179bcb30441e89a6b89e540d8b21 [2020-10-14 05:01:51,670 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 05:01:51,672 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 05:01:51,673 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 05:01:51,674 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 05:01:51,678 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 05:01:51,679 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:01:51" (1/1) ... [2020-10-14 05:01:51,683 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7636aefb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:01:51, skipping insertion in model container [2020-10-14 05:01:51,683 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:01:51" (1/1) ... [2020-10-14 05:01:51,692 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 05:01:51,757 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 05:01:52,202 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 05:01:52,214 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 05:01:52,298 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 05:01:52,351 INFO L208 MainTranslator]: Completed translation [2020-10-14 05:01:52,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:01:52 WrapperNode [2020-10-14 05:01:52,352 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 05:01:52,353 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 05:01:52,353 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 05:01:52,353 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 05:01:52,367 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:01:52" (1/1) ... [2020-10-14 05:01:52,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:01:52" (1/1) ... [2020-10-14 05:01:52,385 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:01:52" (1/1) ... [2020-10-14 05:01:52,385 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:01:52" (1/1) ... [2020-10-14 05:01:52,401 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:01:52" (1/1) ... [2020-10-14 05:01:52,407 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:01:52" (1/1) ... [2020-10-14 05:01:52,411 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:01:52" (1/1) ... [2020-10-14 05:01:52,418 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 05:01:52,419 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 05:01:52,419 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 05:01:52,419 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 05:01:52,420 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:01:52" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 05:01:52,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 05:01:52,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 05:01:52,484 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-14 05:01:52,484 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-14 05:01:52,484 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-14 05:01:52,484 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2020-10-14 05:01:52,484 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_length [2020-10-14 05:01:52,484 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2020-10-14 05:01:52,484 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_insert [2020-10-14 05:01:52,485 INFO L138 BoogieDeclarations]: Found implementation of procedure _get_nondet_int [2020-10-14 05:01:52,485 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 05:01:52,485 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 05:01:52,485 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 05:01:52,485 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-14 05:01:52,486 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-14 05:01:52,486 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-14 05:01:52,486 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-14 05:01:52,486 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-14 05:01:52,486 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-14 05:01:52,486 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-14 05:01:52,487 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-14 05:01:52,487 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-14 05:01:52,487 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-14 05:01:52,487 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-14 05:01:52,487 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-14 05:01:52,487 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-14 05:01:52,487 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-14 05:01:52,488 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-14 05:01:52,488 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-14 05:01:52,488 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-14 05:01:52,488 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-14 05:01:52,488 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-14 05:01:52,488 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-14 05:01:52,489 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-14 05:01:52,489 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-14 05:01:52,489 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-14 05:01:52,489 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-14 05:01:52,489 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-14 05:01:52,489 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-14 05:01:52,489 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-14 05:01:52,489 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-14 05:01:52,489 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-14 05:01:52,490 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-14 05:01:52,490 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-14 05:01:52,490 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-14 05:01:52,490 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-14 05:01:52,490 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-14 05:01:52,490 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-14 05:01:52,490 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-14 05:01:52,490 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-14 05:01:52,491 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-14 05:01:52,491 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-14 05:01:52,491 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-14 05:01:52,491 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-14 05:01:52,491 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-14 05:01:52,491 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-14 05:01:52,491 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-14 05:01:52,492 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-14 05:01:52,492 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-14 05:01:52,492 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-14 05:01:52,492 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-14 05:01:52,492 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-14 05:01:52,492 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-14 05:01:52,492 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-14 05:01:52,493 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-14 05:01:52,493 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-14 05:01:52,493 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-14 05:01:52,493 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-14 05:01:52,493 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-14 05:01:52,493 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-14 05:01:52,494 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-14 05:01:52,494 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-14 05:01:52,494 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-14 05:01:52,494 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-14 05:01:52,494 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 05:01:52,494 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-14 05:01:52,494 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-14 05:01:52,495 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-14 05:01:52,495 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 05:01:52,495 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-14 05:01:52,495 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-14 05:01:52,495 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-14 05:01:52,495 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-14 05:01:52,495 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-14 05:01:52,495 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-14 05:01:52,496 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-14 05:01:52,496 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-14 05:01:52,496 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-14 05:01:52,496 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-14 05:01:52,496 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-14 05:01:52,496 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-14 05:01:52,496 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-14 05:01:52,496 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-14 05:01:52,496 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-14 05:01:52,496 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-14 05:01:52,497 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-14 05:01:52,497 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-14 05:01:52,497 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-14 05:01:52,497 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-14 05:01:52,497 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-14 05:01:52,497 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-14 05:01:52,497 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-14 05:01:52,497 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-14 05:01:52,497 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-14 05:01:52,498 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-14 05:01:52,498 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-14 05:01:52,498 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-14 05:01:52,498 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-14 05:01:52,498 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-14 05:01:52,498 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-14 05:01:52,498 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-14 05:01:52,498 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-14 05:01:52,499 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-14 05:01:52,499 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-14 05:01:52,499 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-14 05:01:52,499 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-14 05:01:52,499 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-14 05:01:52,499 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-14 05:01:52,500 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-14 05:01:52,500 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2020-10-14 05:01:52,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-14 05:01:52,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-14 05:01:52,500 INFO L130 BoogieDeclarations]: Found specification of procedure sll_length [2020-10-14 05:01:52,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-14 05:01:52,500 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2020-10-14 05:01:52,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 05:01:52,501 INFO L130 BoogieDeclarations]: Found specification of procedure sll_insert [2020-10-14 05:01:52,501 INFO L130 BoogieDeclarations]: Found specification of procedure _get_nondet_int [2020-10-14 05:01:52,501 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 05:01:52,501 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 05:01:52,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-14 05:01:52,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 05:01:52,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 05:01:52,925 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-14 05:01:53,139 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 05:01:53,139 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-14 05:01:53,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:01:53 BoogieIcfgContainer [2020-10-14 05:01:53,146 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 05:01:53,147 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 05:01:53,147 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 05:01:53,151 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 05:01:53,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 05:01:51" (1/3) ... [2020-10-14 05:01:53,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60296c14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:01:53, skipping insertion in model container [2020-10-14 05:01:53,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:01:52" (2/3) ... [2020-10-14 05:01:53,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60296c14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:01:53, skipping insertion in model container [2020-10-14 05:01:53,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:01:53" (3/3) ... [2020-10-14 05:01:53,163 INFO L109 eAbstractionObserver]: Analyzing ICFG sll_nondet_insert-1.i [2020-10-14 05:01:53,178 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 05:01:53,186 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 05:01:53,199 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 05:01:53,220 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 05:01:53,221 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 05:01:53,221 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 05:01:53,221 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 05:01:53,221 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 05:01:53,221 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 05:01:53,222 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 05:01:53,222 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 05:01:53,242 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states. [2020-10-14 05:01:53,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-14 05:01:53,250 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:01:53,252 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 05:01:53,252 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:01:53,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:01:53,259 INFO L82 PathProgramCache]: Analyzing trace with hash 960784814, now seen corresponding path program 1 times [2020-10-14 05:01:53,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:01:53,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [694499060] [2020-10-14 05:01:53,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:01:53,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:01:53,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:01:53,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:01:53,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:01:53,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:01:53,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:01:53,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:01:53,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 05:01:53,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 05:01:53,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 305 [2020-10-14 05:01:53,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:01:53,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:01:53,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:01:53,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 05:01:53,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:01:53,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 05:01:53,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:01:53,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:01:53,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:01:53,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:01:53,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:01:53,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:01:53,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 05:01:53,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:01:53,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:01:53,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:01:53,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:01:53,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:01:53,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:01:53,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 05:01:53,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:01:53,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:01:53,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:01:53,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:01:53,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:01:53,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:01:53,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 05:01:53,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:01:53,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:01:53,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:01:53,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-14 05:01:53,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:01:53,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:01:53,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 05:01:53,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:01:53,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:01:53,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:01:53,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:01:53,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:01:53,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 05:01:53,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:01:53,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:01:53,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:01:53,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-14 05:01:53,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:01:53,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:01:53,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 05:01:53,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:01:53,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:01:53,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:01:53,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:01:53,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:01:53,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:01:53,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 05:01:53,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:01:53,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:01:53,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:01:53,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 05:01:53,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:01:53,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 05:01:53,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 05:01:53,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:01:53,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:01:53,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:01:53,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:01:53,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:01:53,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:01:53,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 05:01:53,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:01:53,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:01:53,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:01:53,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 05:01:53,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:01:53,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:01:53,957 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 05:01:53,959 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [694499060] [2020-10-14 05:01:53,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:01:53,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-14 05:01:53,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693740308] [2020-10-14 05:01:53,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 05:01:53,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:01:53,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 05:01:53,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 05:01:53,991 INFO L87 Difference]: Start difference. First operand 67 states. Second operand 4 states. [2020-10-14 05:01:54,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:01:54,221 INFO L93 Difference]: Finished difference Result 136 states and 184 transitions. [2020-10-14 05:01:54,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:01:54,223 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-10-14 05:01:54,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:01:54,235 INFO L225 Difference]: With dead ends: 136 [2020-10-14 05:01:54,235 INFO L226 Difference]: Without dead ends: 58 [2020-10-14 05:01:54,240 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 05:01:54,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-14 05:01:54,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 53. [2020-10-14 05:01:54,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-14 05:01:54,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 62 transitions. [2020-10-14 05:01:54,292 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 62 transitions. Word has length 37 [2020-10-14 05:01:54,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:01:54,292 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 62 transitions. [2020-10-14 05:01:54,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 05:01:54,292 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 62 transitions. [2020-10-14 05:01:54,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 05:01:54,295 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:01:54,296 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 05:01:54,296 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 05:01:54,296 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:01:54,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:01:54,297 INFO L82 PathProgramCache]: Analyzing trace with hash 322036078, now seen corresponding path program 1 times [2020-10-14 05:01:54,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:01:54,297 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [378918195] [2020-10-14 05:01:54,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:01:54,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:01:54,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:01:54,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:01:54,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:01:57,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:01:57,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 05:01:57,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:01:57,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3473 [2020-10-14 05:01:57,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:01:57,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:01:57,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 05:01:57,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 05:01:57,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 05:01:57,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:01:57,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:01:57,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:01:57,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:01:57,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:01:57,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:01:57,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:01:57,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:01:57,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:01:57,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:01:57,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:01:57,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:01:57,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:01:57,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:01:57,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 05:01:57,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:01:57,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:01:57,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:01:57,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:01:57,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:01:57,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 05:01:57,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:01:57,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:01:57,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:01:57,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:01:57,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:01:57,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:01:57,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 05:01:57,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:01:57,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:01:57,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:01:57,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 05:01:57,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:01:57,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 05:01:57,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:01:57,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:01:57,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:01:57,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:01:57,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 05:01:57,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:01:57,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 05:01:57,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:01:57,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:01:57,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:01:57,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:01:57,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:01:57,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 05:01:57,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:01:57,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:01:57,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:01:57,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 05:01:57,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:01:57,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:01:57,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 05:01:57,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:01:57,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:01:57,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:01:57,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:01:57,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:01:57,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:01:57,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:01:57,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:01:57,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:01:57,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 05:01:57,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:01:57,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:01:58,019 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 05:01:58,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [378918195] [2020-10-14 05:01:58,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:01:58,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 05:01:58,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982241161] [2020-10-14 05:01:58,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 05:01:58,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:01:58,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 05:01:58,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-14 05:01:58,024 INFO L87 Difference]: Start difference. First operand 53 states and 62 transitions. Second operand 11 states. [2020-10-14 05:01:58,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:01:58,561 INFO L93 Difference]: Finished difference Result 119 states and 149 transitions. [2020-10-14 05:01:58,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 05:01:58,561 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 44 [2020-10-14 05:01:58,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:01:58,564 INFO L225 Difference]: With dead ends: 119 [2020-10-14 05:01:58,564 INFO L226 Difference]: Without dead ends: 82 [2020-10-14 05:01:58,565 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2020-10-14 05:01:58,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-14 05:01:58,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 66. [2020-10-14 05:01:58,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-14 05:01:58,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 81 transitions. [2020-10-14 05:01:58,584 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 81 transitions. Word has length 44 [2020-10-14 05:01:58,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:01:58,585 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 81 transitions. [2020-10-14 05:01:58,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 05:01:58,585 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 81 transitions. [2020-10-14 05:01:58,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-14 05:01:58,587 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:01:58,587 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:01:58,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 05:01:58,588 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:01:58,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:01:58,588 INFO L82 PathProgramCache]: Analyzing trace with hash -1427384127, now seen corresponding path program 1 times [2020-10-14 05:01:58,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:01:58,589 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1397642464] [2020-10-14 05:01:58,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:01:58,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:01:58,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:01:58,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:01:58,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:02,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:02,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 05:02:02,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:02:02,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3571 [2020-10-14 05:02:02,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:02,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:02,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:02:02,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-14 05:02:02,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 05:02:02,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:02:02,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:02:02,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:02,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:02,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:02,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:02:02,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:02:02,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:02:02,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:02,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:02,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:02:02,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:02:02,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:02:02,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:02:02,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 05:02:02,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:02,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:02,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:02,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 05:02:02,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:02:02,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 05:02:02,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:02,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:02,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:02:02,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:02:02,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:02:02,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:02:02,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 05:02:02,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:02,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:02,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:02,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 05:02:02,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:02:02,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 05:02:02,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:02,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:02,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:02:02,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:02:02,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 05:02:02,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:02:02,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 05:02:02,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:02,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:02,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:02,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:02:02,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:02:02,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 05:02:02,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:02,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:02,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:02:02,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:02:02,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 05:02:02,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:02:02,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 05:02:02,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:02,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:02,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:02,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:02:02,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:02:02,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:02:02,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:02,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:02,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:02:02,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 05:02:02,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:02:02,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:02:02,396 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 05:02:02,397 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1397642464] [2020-10-14 05:02:02,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:02:02,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-14 05:02:02,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710856445] [2020-10-14 05:02:02,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 05:02:02,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:02:02,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 05:02:02,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-14 05:02:02,399 INFO L87 Difference]: Start difference. First operand 66 states and 81 transitions. Second operand 11 states. [2020-10-14 05:02:03,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:02:03,029 INFO L93 Difference]: Finished difference Result 130 states and 165 transitions. [2020-10-14 05:02:03,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 05:02:03,029 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 47 [2020-10-14 05:02:03,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:02:03,031 INFO L225 Difference]: With dead ends: 130 [2020-10-14 05:02:03,031 INFO L226 Difference]: Without dead ends: 89 [2020-10-14 05:02:03,032 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2020-10-14 05:02:03,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-14 05:02:03,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 75. [2020-10-14 05:02:03,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-14 05:02:03,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 94 transitions. [2020-10-14 05:02:03,046 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 94 transitions. Word has length 47 [2020-10-14 05:02:03,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:02:03,047 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 94 transitions. [2020-10-14 05:02:03,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 05:02:03,047 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 94 transitions. [2020-10-14 05:02:03,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-14 05:02:03,049 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:02:03,049 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 05:02:03,050 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 05:02:03,050 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:02:03,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:02:03,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1178639427, now seen corresponding path program 1 times [2020-10-14 05:02:03,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:02:03,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1046328747] [2020-10-14 05:02:03,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:02:03,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:03,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:03,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:03,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:03,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:06,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:06,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 05:02:06,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 05:02:06,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3017 [2020-10-14 05:02:06,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:06,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:06,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:02:06,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-14 05:02:06,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 05:02:06,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:02:06,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:02:06,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:06,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:06,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:06,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:02:06,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:02:06,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:02:06,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:06,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:06,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:02:06,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:02:06,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:02:06,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:02:06,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 05:02:06,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:06,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:06,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:06,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 05:02:06,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:02:06,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:02:06,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:06,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:06,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:02:06,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:02:06,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:02:06,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:02:06,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 05:02:06,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:06,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:06,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:06,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 05:02:06,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:02:06,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 05:02:06,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:06,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:06,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:02:06,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:02:06,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:02:06,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:02:06,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 05:02:06,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:06,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:06,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:06,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:02:06,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:02:06,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 05:02:06,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:06,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:06,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:02:06,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:02:06,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:02:06,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:02:06,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 05:02:06,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:06,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:06,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:06,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:02:06,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:02:06,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:02:06,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:06,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:06,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:02:06,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 05:02:06,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:02:06,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:02:06,264 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 05:02:06,265 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1046328747] [2020-10-14 05:02:06,265 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:02:06,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 05:02:06,266 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187273890] [2020-10-14 05:02:06,266 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 05:02:06,267 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:02:06,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 05:02:06,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-14 05:02:06,268 INFO L87 Difference]: Start difference. First operand 75 states and 94 transitions. Second operand 9 states. [2020-10-14 05:02:06,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:02:06,632 INFO L93 Difference]: Finished difference Result 130 states and 161 transitions. [2020-10-14 05:02:06,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 05:02:06,633 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 47 [2020-10-14 05:02:06,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:02:06,635 INFO L225 Difference]: With dead ends: 130 [2020-10-14 05:02:06,635 INFO L226 Difference]: Without dead ends: 86 [2020-10-14 05:02:06,637 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-10-14 05:02:06,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-14 05:02:06,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 79. [2020-10-14 05:02:06,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-14 05:02:06,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 98 transitions. [2020-10-14 05:02:06,658 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 98 transitions. Word has length 47 [2020-10-14 05:02:06,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:02:06,659 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 98 transitions. [2020-10-14 05:02:06,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 05:02:06,659 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 98 transitions. [2020-10-14 05:02:06,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-14 05:02:06,664 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:02:06,665 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 05:02:06,665 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 05:02:06,665 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:02:06,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:02:06,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1436804865, now seen corresponding path program 1 times [2020-10-14 05:02:06,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:02:06,666 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1762844657] [2020-10-14 05:02:06,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:02:06,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:06,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:06,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:06,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:07,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:07,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 05:02:07,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:02:07,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 927 [2020-10-14 05:02:07,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:07,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:07,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 05:02:07,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 05:02:07,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 05:02:07,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:02:07,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:02:07,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:07,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:07,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:07,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:02:07,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:02:07,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:02:07,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:07,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:07,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:02:07,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:02:07,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:02:07,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:02:07,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 05:02:07,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:07,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:07,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:07,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 05:02:07,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:02:07,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 05:02:07,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:07,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:07,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:02:07,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:02:07,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 05:02:07,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:02:07,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 05:02:07,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:07,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:07,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:07,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:07,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 05:02:07,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:02:07,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 05:02:07,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:07,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:07,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:02:07,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:02:07,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 05:02:07,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:02:07,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 05:02:07,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:07,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:07,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:07,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:07,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:02:07,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:02:07,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 05:02:07,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:07,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:07,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:02:07,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:02:07,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 05:02:07,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:02:07,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 05:02:07,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:07,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:07,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:07,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:02:07,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:02:07,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:02:07,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:07,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:07,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:02:07,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 05:02:07,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:02:07,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:02:07,873 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 05:02:07,874 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1762844657] [2020-10-14 05:02:07,874 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:02:07,874 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 05:02:07,874 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950284510] [2020-10-14 05:02:07,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 05:02:07,875 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:02:07,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 05:02:07,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-10-14 05:02:07,876 INFO L87 Difference]: Start difference. First operand 79 states and 98 transitions. Second operand 12 states. [2020-10-14 05:02:08,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:02:08,900 INFO L93 Difference]: Finished difference Result 189 states and 245 transitions. [2020-10-14 05:02:08,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 05:02:08,901 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 47 [2020-10-14 05:02:08,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:02:08,902 INFO L225 Difference]: With dead ends: 189 [2020-10-14 05:02:08,903 INFO L226 Difference]: Without dead ends: 106 [2020-10-14 05:02:08,906 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=131, Invalid=421, Unknown=0, NotChecked=0, Total=552 [2020-10-14 05:02:08,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-14 05:02:08,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 82. [2020-10-14 05:02:08,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-14 05:02:08,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 103 transitions. [2020-10-14 05:02:08,928 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 103 transitions. Word has length 47 [2020-10-14 05:02:08,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:02:08,928 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 103 transitions. [2020-10-14 05:02:08,928 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 05:02:08,928 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 103 transitions. [2020-10-14 05:02:08,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-14 05:02:08,930 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:02:08,930 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 05:02:08,930 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 05:02:08,930 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:02:08,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:02:08,931 INFO L82 PathProgramCache]: Analyzing trace with hash -618929005, now seen corresponding path program 1 times [2020-10-14 05:02:08,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:02:08,931 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [631264321] [2020-10-14 05:02:08,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:02:08,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:08,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:08,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:08,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:09,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:13,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:13,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 05:02:13,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 05:02:13,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 05:02:13,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:13,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:13,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 05:02:13,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 05:02:13,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 05:02:13,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:02:13,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:02:13,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:13,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:13,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:13,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:02:13,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:02:13,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:02:13,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:13,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:13,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:02:13,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:02:13,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:02:13,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:02:13,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 05:02:13,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:13,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:13,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:13,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:02:13,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:02:13,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:02:13,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:13,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:13,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:02:13,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:02:13,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:02:13,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:02:14,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 05:02:14,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:14,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:14,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:14,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 05:02:14,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:02:14,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 05:02:14,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:14,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:14,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:02:14,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:02:14,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 05:02:14,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:02:14,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 05:02:14,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:14,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:14,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:14,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:02:14,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:02:14,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 05:02:14,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:14,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:14,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:02:14,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:02:14,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 05:02:14,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:02:14,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-14 05:02:14,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:14,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:14,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:14,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:02:14,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:02:14,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 05:02:14,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:14,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:14,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:02:14,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:02:14,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:02:14,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:02:14,122 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 05:02:14,124 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [631264321] [2020-10-14 05:02:14,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:02:14,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-14 05:02:14,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756834200] [2020-10-14 05:02:14,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 05:02:14,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:02:14,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 05:02:14,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-14 05:02:14,126 INFO L87 Difference]: Start difference. First operand 82 states and 103 transitions. Second operand 12 states. [2020-10-14 05:02:14,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:02:14,507 INFO L93 Difference]: Finished difference Result 105 states and 134 transitions. [2020-10-14 05:02:14,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 05:02:14,509 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 48 [2020-10-14 05:02:14,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:02:14,510 INFO L225 Difference]: With dead ends: 105 [2020-10-14 05:02:14,511 INFO L226 Difference]: Without dead ends: 101 [2020-10-14 05:02:14,511 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2020-10-14 05:02:14,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-14 05:02:14,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 92. [2020-10-14 05:02:14,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-14 05:02:14,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 117 transitions. [2020-10-14 05:02:14,534 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 117 transitions. Word has length 48 [2020-10-14 05:02:14,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:02:14,535 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 117 transitions. [2020-10-14 05:02:14,535 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 05:02:14,535 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 117 transitions. [2020-10-14 05:02:14,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-14 05:02:14,540 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:02:14,540 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 05:02:14,541 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 05:02:14,542 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:02:14,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:02:14,542 INFO L82 PathProgramCache]: Analyzing trace with hash 293392093, now seen corresponding path program 1 times [2020-10-14 05:02:14,543 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:02:14,543 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [148628952] [2020-10-14 05:02:14,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:02:14,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:14,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:14,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:14,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:16,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:16,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 05:02:16,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:02:16,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1952 [2020-10-14 05:02:16,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:16,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:16,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 05:02:16,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 05:02:16,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 05:02:16,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:02:16,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:02:16,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:16,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:16,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:16,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:02:16,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:02:16,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:02:16,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:16,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:16,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:02:16,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:02:16,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:02:16,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:02:16,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 05:02:16,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:16,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:16,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:16,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:02:16,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:02:16,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 05:02:16,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:16,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:16,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:02:16,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:02:16,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:02:16,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:02:16,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 05:02:16,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:16,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:16,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:16,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 05:02:16,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:02:16,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 05:02:16,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:16,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:16,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:02:16,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:02:16,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 05:02:16,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:02:16,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 05:02:16,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:16,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:16,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:16,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:02:16,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:02:16,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:02:16,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:16,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:16,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:02:16,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 05:02:16,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:02:16,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:02:16,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-14 05:02:16,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:16,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:16,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:16,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 05:02:16,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:02:16,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:02:16,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:16,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:16,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:02:16,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 05:02:16,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:02:16,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:02:16,712 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 05:02:16,712 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [148628952] [2020-10-14 05:02:16,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:02:16,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 05:02:16,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005495433] [2020-10-14 05:02:16,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 05:02:16,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:02:16,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 05:02:16,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-14 05:02:16,716 INFO L87 Difference]: Start difference. First operand 92 states and 117 transitions. Second operand 12 states. [2020-10-14 05:02:17,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:02:17,102 INFO L93 Difference]: Finished difference Result 190 states and 247 transitions. [2020-10-14 05:02:17,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 05:02:17,103 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 49 [2020-10-14 05:02:17,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:02:17,104 INFO L225 Difference]: With dead ends: 190 [2020-10-14 05:02:17,105 INFO L226 Difference]: Without dead ends: 123 [2020-10-14 05:02:17,110 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2020-10-14 05:02:17,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-10-14 05:02:17,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 99. [2020-10-14 05:02:17,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-14 05:02:17,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 125 transitions. [2020-10-14 05:02:17,133 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 125 transitions. Word has length 49 [2020-10-14 05:02:17,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:02:17,133 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 125 transitions. [2020-10-14 05:02:17,134 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 05:02:17,134 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 125 transitions. [2020-10-14 05:02:17,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 05:02:17,135 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:02:17,136 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, 1, 1] [2020-10-14 05:02:17,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 05:02:17,137 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:02:17,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:02:17,137 INFO L82 PathProgramCache]: Analyzing trace with hash 1879536490, now seen corresponding path program 1 times [2020-10-14 05:02:17,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:02:17,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [549050510] [2020-10-14 05:02:17,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:02:17,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:17,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:17,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:17,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:19,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:19,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 05:02:19,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:02:19,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2354 [2020-10-14 05:02:19,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:19,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:19,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 05:02:19,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 05:02:19,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 05:02:19,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:02:19,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:02:19,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:19,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:19,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:19,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:02:19,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:02:19,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:02:19,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:19,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:19,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:02:19,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:02:19,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:02:19,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:02:19,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 05:02:19,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:19,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:19,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:19,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 05:02:19,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:02:19,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 05:02:19,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:19,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:19,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:02:19,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:02:19,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 05:02:19,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:02:19,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 05:02:19,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:19,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:19,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:19,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 05:02:19,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:02:19,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 05:02:19,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:19,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:19,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:02:19,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:02:19,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 05:02:19,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:02:19,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 05:02:19,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:19,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:19,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:19,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:02:19,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:02:19,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:02:19,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:19,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:19,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:02:19,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 05:02:19,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:02:19,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:02:19,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 05:02:19,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:19,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:19,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:19,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 05:02:19,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:02:19,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:02:19,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:19,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:19,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:02:19,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 05:02:19,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:02:19,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:02:19,767 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 05:02:19,767 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [549050510] [2020-10-14 05:02:19,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:02:19,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 05:02:19,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999485306] [2020-10-14 05:02:19,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 05:02:19,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:02:19,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 05:02:19,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-10-14 05:02:19,770 INFO L87 Difference]: Start difference. First operand 99 states and 125 transitions. Second operand 13 states. [2020-10-14 05:02:20,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:02:20,399 INFO L93 Difference]: Finished difference Result 196 states and 253 transitions. [2020-10-14 05:02:20,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 05:02:20,400 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 52 [2020-10-14 05:02:20,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:02:20,401 INFO L225 Difference]: With dead ends: 196 [2020-10-14 05:02:20,401 INFO L226 Difference]: Without dead ends: 126 [2020-10-14 05:02:20,409 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2020-10-14 05:02:20,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-14 05:02:20,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 96. [2020-10-14 05:02:20,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-14 05:02:20,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 121 transitions. [2020-10-14 05:02:20,423 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 121 transitions. Word has length 52 [2020-10-14 05:02:20,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:02:20,423 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 121 transitions. [2020-10-14 05:02:20,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 05:02:20,424 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 121 transitions. [2020-10-14 05:02:20,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-14 05:02:20,425 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:02:20,425 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] [2020-10-14 05:02:20,425 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 05:02:20,425 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:02:20,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:02:20,425 INFO L82 PathProgramCache]: Analyzing trace with hash 1747730134, now seen corresponding path program 2 times [2020-10-14 05:02:20,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:02:20,426 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [602709216] [2020-10-14 05:02:20,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:02:20,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:20,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:20,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:20,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:20,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-14 05:02:20,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:02:20,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-10-14 05:02:20,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:20,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:20,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 05:02:20,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 05:02:20,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 05:02:20,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:02:20,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:02:20,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:20,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:20,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:20,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:02:20,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:02:20,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:02:20,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:20,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:20,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:02:20,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:02:20,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:02:20,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:02:20,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 05:02:20,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:20,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:20,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:20,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:02:20,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:02:20,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:02:20,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:20,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:20,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:02:20,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:02:20,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:02:20,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:02:20,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 05:02:20,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:20,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:20,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:20,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 05:02:20,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:02:20,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 05:02:20,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:20,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:20,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:02:20,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:02:20,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 05:02:20,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:02:20,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 05:02:20,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:20,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:20,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:20,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:02:20,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:02:20,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 05:02:20,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:20,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:20,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:02:20,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:02:20,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 05:02:20,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:02:20,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 05:02:20,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:20,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:20,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:20,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 05:02:20,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:02:20,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 05:02:20,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:20,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:20,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:02:20,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:02:20,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 05:02:20,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:02:20,876 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 05:02:20,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [602709216] [2020-10-14 05:02:20,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:02:20,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 05:02:20,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147912818] [2020-10-14 05:02:20,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 05:02:20,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:02:20,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 05:02:20,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-14 05:02:20,878 INFO L87 Difference]: Start difference. First operand 96 states and 121 transitions. Second operand 14 states. [2020-10-14 05:02:21,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:02:21,742 INFO L93 Difference]: Finished difference Result 113 states and 143 transitions. [2020-10-14 05:02:21,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 05:02:21,743 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 53 [2020-10-14 05:02:21,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:02:21,744 INFO L225 Difference]: With dead ends: 113 [2020-10-14 05:02:21,744 INFO L226 Difference]: Without dead ends: 109 [2020-10-14 05:02:21,745 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2020-10-14 05:02:21,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-14 05:02:21,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 97. [2020-10-14 05:02:21,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-14 05:02:21,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 123 transitions. [2020-10-14 05:02:21,756 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 123 transitions. Word has length 53 [2020-10-14 05:02:21,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:02:21,756 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 123 transitions. [2020-10-14 05:02:21,756 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 05:02:21,756 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 123 transitions. [2020-10-14 05:02:21,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 05:02:21,757 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:02:21,758 INFO L422 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1] [2020-10-14 05:02:21,758 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 05:02:21,758 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:02:21,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:02:21,759 INFO L82 PathProgramCache]: Analyzing trace with hash 645381370, now seen corresponding path program 3 times [2020-10-14 05:02:21,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:02:21,759 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [481969346] [2020-10-14 05:02:21,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:02:21,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:21,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:21,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:21,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:25,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:25,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 05:02:25,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:02:25,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4160 [2020-10-14 05:02:25,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:25,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:25,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 05:02:25,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 05:02:25,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-14 05:02:25,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:02:26,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:02:26,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:26,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:26,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:26,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:02:26,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:02:26,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:02:26,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:26,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:26,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:02:26,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:02:26,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:02:26,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:02:26,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 05:02:26,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:26,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:26,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:26,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:02:26,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:02:26,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 05:02:26,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:26,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:26,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:02:26,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:02:26,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:02:26,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:02:26,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 05:02:26,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:26,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:26,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:26,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:26,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 05:02:26,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:02:26,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-14 05:02:26,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:26,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:26,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:02:26,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:02:26,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 05:02:26,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:02:26,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 05:02:26,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:26,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:26,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:26,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:02:26,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:02:26,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 05:02:26,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:26,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:26,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:02:26,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:02:26,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:02:26,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:02:26,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 05:02:26,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:26,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:26,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:26,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:02:26,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:02:26,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 05:02:26,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:26,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:26,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:02:26,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:02:26,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 05:02:26,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:02:26,313 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 05:02:26,313 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [481969346] [2020-10-14 05:02:26,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:02:26,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 05:02:26,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99476814] [2020-10-14 05:02:26,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 05:02:26,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:02:26,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 05:02:26,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2020-10-14 05:02:26,315 INFO L87 Difference]: Start difference. First operand 97 states and 123 transitions. Second operand 17 states. [2020-10-14 05:02:27,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:02:27,097 INFO L93 Difference]: Finished difference Result 145 states and 190 transitions. [2020-10-14 05:02:27,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 05:02:27,098 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 54 [2020-10-14 05:02:27,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:02:27,100 INFO L225 Difference]: With dead ends: 145 [2020-10-14 05:02:27,100 INFO L226 Difference]: Without dead ends: 141 [2020-10-14 05:02:27,101 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2020-10-14 05:02:27,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-10-14 05:02:27,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 107. [2020-10-14 05:02:27,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-14 05:02:27,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 136 transitions. [2020-10-14 05:02:27,125 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 136 transitions. Word has length 54 [2020-10-14 05:02:27,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:02:27,125 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 136 transitions. [2020-10-14 05:02:27,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 05:02:27,126 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 136 transitions. [2020-10-14 05:02:27,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-14 05:02:27,126 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:02:27,127 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-14 05:02:27,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 05:02:27,127 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:02:27,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:02:27,127 INFO L82 PathProgramCache]: Analyzing trace with hash 832308054, now seen corresponding path program 4 times [2020-10-14 05:02:27,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:02:27,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [404820901] [2020-10-14 05:02:27,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:02:27,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:27,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:27,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:27,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:27,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-14 05:02:27,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:02:27,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 609 [2020-10-14 05:02:27,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:27,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:27,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 05:02:27,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 05:02:27,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 05:02:27,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:02:27,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:02:27,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:27,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:27,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:27,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:02:27,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:02:27,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 05:02:27,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:27,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:27,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:02:27,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:02:27,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:02:27,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:02:27,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 05:02:27,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:27,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:27,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:27,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:02:27,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:02:27,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:02:27,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:27,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:27,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:02:27,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:02:27,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:02:27,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:02:27,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 05:02:27,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:27,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:27,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:27,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 05:02:27,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:02:27,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 05:02:27,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:27,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:27,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:02:27,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:02:27,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 05:02:28,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:02:28,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 05:02:28,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:28,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:28,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:28,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:02:28,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:02:28,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 05:02:28,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:28,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:28,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:02:28,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:02:28,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 05:02:28,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:02:28,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 05:02:28,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:28,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:28,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:28,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 05:02:28,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:02:28,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 05:02:28,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:28,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:28,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:02:28,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:02:28,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:02:28,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:02:28,631 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 05:02:28,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [404820901] [2020-10-14 05:02:28,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:02:28,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 05:02:28,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732210866] [2020-10-14 05:02:28,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 05:02:28,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:02:28,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 05:02:28,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-10-14 05:02:28,635 INFO L87 Difference]: Start difference. First operand 107 states and 136 transitions. Second operand 16 states. [2020-10-14 05:02:29,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:02:29,874 INFO L93 Difference]: Finished difference Result 154 states and 204 transitions. [2020-10-14 05:02:29,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 05:02:29,878 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 55 [2020-10-14 05:02:29,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:02:29,879 INFO L225 Difference]: With dead ends: 154 [2020-10-14 05:02:29,880 INFO L226 Difference]: Without dead ends: 150 [2020-10-14 05:02:29,880 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=80, Invalid=520, Unknown=0, NotChecked=0, Total=600 [2020-10-14 05:02:29,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-14 05:02:29,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 138. [2020-10-14 05:02:29,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-14 05:02:29,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 183 transitions. [2020-10-14 05:02:29,894 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 183 transitions. Word has length 55 [2020-10-14 05:02:29,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:02:29,894 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 183 transitions. [2020-10-14 05:02:29,894 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 05:02:29,894 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 183 transitions. [2020-10-14 05:02:29,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 05:02:29,896 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:02:29,896 INFO L422 BasicCegarLoop]: trace histogram [4, 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] [2020-10-14 05:02:29,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 05:02:29,896 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:02:29,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:02:29,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1962899334, now seen corresponding path program 5 times [2020-10-14 05:02:29,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:02:29,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [387618715] [2020-10-14 05:02:29,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:02:29,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:29,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:30,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:30,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:30,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 05:02:30,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:02:30,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 371 [2020-10-14 05:02:30,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:30,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:30,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 05:02:30,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 05:02:30,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 05:02:30,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:02:30,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:02:30,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:30,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:30,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:30,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:02:30,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:02:30,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:02:30,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:30,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:30,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:02:30,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:02:30,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:02:30,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:02:30,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 05:02:30,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:30,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:30,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:30,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:02:30,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:02:30,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:02:30,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:30,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:30,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:02:30,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:02:30,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:02:30,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:02:30,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 05:02:30,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:30,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:30,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:30,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 05:02:30,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:02:30,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 05:02:30,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:30,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:30,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:02:30,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:02:30,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 05:02:30,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:02:30,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 05:02:30,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:30,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:30,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:30,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:02:30,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:02:30,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 05:02:30,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:30,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:30,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:02:30,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:02:30,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 05:02:30,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:02:30,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 05:02:30,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:30,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:30,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:30,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 05:02:30,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:02:30,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 05:02:30,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:30,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:30,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:02:30,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:02:30,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 05:02:30,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:02:30,981 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 05:02:30,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [387618715] [2020-10-14 05:02:30,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:02:30,982 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 05:02:30,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636196982] [2020-10-14 05:02:30,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 05:02:30,983 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:02:30,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 05:02:30,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2020-10-14 05:02:30,984 INFO L87 Difference]: Start difference. First operand 138 states and 183 transitions. Second operand 17 states. [2020-10-14 05:02:32,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:02:32,300 INFO L93 Difference]: Finished difference Result 158 states and 211 transitions. [2020-10-14 05:02:32,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 05:02:32,301 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 56 [2020-10-14 05:02:32,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:02:32,302 INFO L225 Difference]: With dead ends: 158 [2020-10-14 05:02:32,303 INFO L226 Difference]: Without dead ends: 154 [2020-10-14 05:02:32,304 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=91, Invalid=611, Unknown=0, NotChecked=0, Total=702 [2020-10-14 05:02:32,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-14 05:02:32,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 139. [2020-10-14 05:02:32,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-14 05:02:32,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 185 transitions. [2020-10-14 05:02:32,339 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 185 transitions. Word has length 56 [2020-10-14 05:02:32,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:02:32,340 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 185 transitions. [2020-10-14 05:02:32,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 05:02:32,340 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 185 transitions. [2020-10-14 05:02:32,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-14 05:02:32,341 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:02:32,342 INFO L422 BasicCegarLoop]: trace histogram [5, 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] [2020-10-14 05:02:32,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 05:02:32,344 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:02:32,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:02:32,344 INFO L82 PathProgramCache]: Analyzing trace with hash 1579984854, now seen corresponding path program 6 times [2020-10-14 05:02:32,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:02:32,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1330818674] [2020-10-14 05:02:32,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:02:32,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:32,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:32,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:32,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:32,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 05:02:32,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:02:32,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 484 [2020-10-14 05:02:32,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:32,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:32,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 05:02:32,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 05:02:32,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 05:02:32,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:02:32,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:02:32,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:32,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:32,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:32,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:02:32,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:02:32,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:02:32,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:32,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:32,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:02:32,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:02:32,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:02:32,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:02:32,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 05:02:32,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:32,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:32,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:32,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:02:32,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:02:32,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:02:32,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:32,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:32,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:02:32,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:02:32,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:02:32,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:02:32,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 05:02:32,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:33,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:33,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:33,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 05:02:33,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:02:33,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-14 05:02:33,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:33,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:33,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:02:33,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:02:33,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 05:02:33,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:02:33,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 05:02:33,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:33,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:33,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:33,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:02:33,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:02:33,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 05:02:33,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:33,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:33,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:02:33,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:02:33,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 05:02:33,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:02:33,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 05:02:33,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:33,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:33,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:33,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 05:02:33,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:02:33,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 05:02:33,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:33,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:33,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 05:02:33,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:02:33,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 05:02:33,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:02:33,610 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 05:02:33,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1330818674] [2020-10-14 05:02:33,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:02:33,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 05:02:33,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231639997] [2020-10-14 05:02:33,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 05:02:33,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:02:33,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 05:02:33,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2020-10-14 05:02:33,612 INFO L87 Difference]: Start difference. First operand 139 states and 185 transitions. Second operand 18 states. [2020-10-14 05:02:35,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:02:35,331 INFO L93 Difference]: Finished difference Result 162 states and 218 transitions. [2020-10-14 05:02:35,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 05:02:35,332 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 57 [2020-10-14 05:02:35,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:02:35,334 INFO L225 Difference]: With dead ends: 162 [2020-10-14 05:02:35,334 INFO L226 Difference]: Without dead ends: 158 [2020-10-14 05:02:35,335 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=95, Invalid=717, Unknown=0, NotChecked=0, Total=812 [2020-10-14 05:02:35,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-14 05:02:35,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 140. [2020-10-14 05:02:35,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-14 05:02:35,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 187 transitions. [2020-10-14 05:02:35,350 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 187 transitions. Word has length 57 [2020-10-14 05:02:35,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:02:35,351 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 187 transitions. [2020-10-14 05:02:35,351 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 05:02:35,351 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 187 transitions. [2020-10-14 05:02:35,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-14 05:02:35,352 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:02:35,352 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-10-14 05:02:35,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 05:02:35,353 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:02:35,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:02:35,353 INFO L82 PathProgramCache]: Analyzing trace with hash 1162383005, now seen corresponding path program 1 times [2020-10-14 05:02:35,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:02:35,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [392332400] [2020-10-14 05:02:35,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:02:35,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:35,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:35,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:35,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:35,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:37,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:37,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 05:02:37,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 05:02:37,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2060 [2020-10-14 05:02:37,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:37,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:37,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 05:02:37,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 05:02:37,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 05:02:37,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:02:37,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:02:37,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:37,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:37,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:37,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:02:37,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:02:37,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:02:37,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:37,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:37,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:02:37,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:02:37,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:02:37,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:02:37,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 05:02:37,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:37,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:37,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:37,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:02:37,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:02:37,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 05:02:37,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:37,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:37,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:02:37,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:02:37,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:02:37,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:02:37,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 05:02:37,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:37,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:37,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:37,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:37,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 05:02:37,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:02:37,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-14 05:02:37,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:37,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:37,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:02:37,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:02:37,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 05:02:37,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:02:37,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 05:02:37,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:37,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:37,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:37,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:37,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 05:02:37,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:02:37,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 05:02:37,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:37,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:37,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:02:37,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:02:37,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 05:02:37,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:02:37,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 05:02:37,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:37,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:37,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:37,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:02:37,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:02:37,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:02:37,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:37,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:37,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:02:37,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 05:02:37,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:02:37,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:02:37,709 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-14 05:02:37,710 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [392332400] [2020-10-14 05:02:37,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:02:37,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 05:02:37,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417627144] [2020-10-14 05:02:37,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 05:02:37,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:02:37,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 05:02:37,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2020-10-14 05:02:37,711 INFO L87 Difference]: Start difference. First operand 140 states and 187 transitions. Second operand 15 states. [2020-10-14 05:02:38,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:02:38,788 INFO L93 Difference]: Finished difference Result 284 states and 398 transitions. [2020-10-14 05:02:38,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 05:02:38,788 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 57 [2020-10-14 05:02:38,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:02:38,791 INFO L225 Difference]: With dead ends: 284 [2020-10-14 05:02:38,791 INFO L226 Difference]: Without dead ends: 212 [2020-10-14 05:02:38,793 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=242, Invalid=1018, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 05:02:38,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-10-14 05:02:38,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 148. [2020-10-14 05:02:38,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-10-14 05:02:38,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 204 transitions. [2020-10-14 05:02:38,811 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 204 transitions. Word has length 57 [2020-10-14 05:02:38,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:02:38,812 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 204 transitions. [2020-10-14 05:02:38,812 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 05:02:38,812 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 204 transitions. [2020-10-14 05:02:38,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-14 05:02:38,814 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:02:38,814 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-10-14 05:02:38,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 05:02:38,814 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:02:38,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:02:38,815 INFO L82 PathProgramCache]: Analyzing trace with hash 151265755, now seen corresponding path program 2 times [2020-10-14 05:02:38,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:02:38,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1550176337] [2020-10-14 05:02:38,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:02:38,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:38,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:38,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:38,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:39,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:43,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:43,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 05:02:43,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 05:02:43,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4400 [2020-10-14 05:02:43,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:43,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:43,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 05:02:43,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 05:02:43,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 05:02:43,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:02:43,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:02:43,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:43,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:43,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:43,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:02:43,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:02:43,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:02:43,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:43,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:43,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:02:43,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:02:43,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:02:43,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:02:43,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 05:02:43,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:43,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:43,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:43,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:02:43,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:02:43,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 05:02:43,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:43,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:43,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:02:43,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:02:43,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:02:43,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:02:43,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 05:02:43,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:43,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:43,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:43,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:43,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 05:02:43,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:02:43,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 05:02:43,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:43,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:43,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:02:43,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:02:43,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 05:02:43,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:02:43,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 05:02:43,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:43,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:43,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:43,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 05:02:43,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:02:43,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 05:02:43,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:43,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:43,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:02:43,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:02:43,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 05:02:43,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:02:43,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 05:02:43,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:43,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:43,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:43,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:02:43,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:02:43,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:02:43,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:43,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:43,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:02:43,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 05:02:43,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:02:43,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:02:43,454 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-14 05:02:43,455 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1550176337] [2020-10-14 05:02:43,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:02:43,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 05:02:43,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652170061] [2020-10-14 05:02:43,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 05:02:43,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:02:43,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 05:02:43,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-14 05:02:43,457 INFO L87 Difference]: Start difference. First operand 148 states and 204 transitions. Second operand 12 states. [2020-10-14 05:02:44,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:02:44,201 INFO L93 Difference]: Finished difference Result 280 states and 392 transitions. [2020-10-14 05:02:44,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 05:02:44,202 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-10-14 05:02:44,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:02:44,205 INFO L225 Difference]: With dead ends: 280 [2020-10-14 05:02:44,206 INFO L226 Difference]: Without dead ends: 186 [2020-10-14 05:02:44,207 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=116, Invalid=390, Unknown=0, NotChecked=0, Total=506 [2020-10-14 05:02:44,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-14 05:02:44,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 150. [2020-10-14 05:02:44,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-14 05:02:44,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 199 transitions. [2020-10-14 05:02:44,224 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 199 transitions. Word has length 57 [2020-10-14 05:02:44,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:02:44,224 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 199 transitions. [2020-10-14 05:02:44,224 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 05:02:44,224 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 199 transitions. [2020-10-14 05:02:44,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-14 05:02:44,225 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:02:44,226 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-14 05:02:44,226 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 05:02:44,226 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:02:44,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:02:44,226 INFO L82 PathProgramCache]: Analyzing trace with hash 1585084831, now seen corresponding path program 1 times [2020-10-14 05:02:44,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:02:44,227 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [771091027] [2020-10-14 05:02:44,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:02:44,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-14 05:02:44,239 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-14 05:02:44,239 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 05:02:44,243 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 05:02:44,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 05:02:44 BoogieIcfgContainer [2020-10-14 05:02:44,260 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 05:02:44,262 INFO L168 Benchmark]: Toolchain (without parser) took 52590.26 ms. Allocated memory was 147.3 MB in the beginning and 750.3 MB in the end (delta: 602.9 MB). Free memory was 101.2 MB in the beginning and 132.9 MB in the end (delta: -31.7 MB). Peak memory consumption was 571.2 MB. Max. memory is 7.1 GB. [2020-10-14 05:02:44,263 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 147.3 MB. Free memory was 121.9 MB in the beginning and 121.5 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-10-14 05:02:44,264 INFO L168 Benchmark]: CACSL2BoogieTranslator took 678.93 ms. Allocated memory was 147.3 MB in the beginning and 203.4 MB in the end (delta: 56.1 MB). Free memory was 101.2 MB in the beginning and 165.9 MB in the end (delta: -64.7 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. [2020-10-14 05:02:44,265 INFO L168 Benchmark]: Boogie Preprocessor took 65.50 ms. Allocated memory is still 203.4 MB. Free memory was 165.9 MB in the beginning and 163.1 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-10-14 05:02:44,266 INFO L168 Benchmark]: RCFGBuilder took 727.37 ms. Allocated memory is still 203.4 MB. Free memory was 163.1 MB in the beginning and 111.7 MB in the end (delta: 51.5 MB). Peak memory consumption was 51.5 MB. Max. memory is 7.1 GB. [2020-10-14 05:02:44,266 INFO L168 Benchmark]: TraceAbstraction took 51113.34 ms. Allocated memory was 203.4 MB in the beginning and 750.3 MB in the end (delta: 546.8 MB). Free memory was 110.7 MB in the beginning and 132.9 MB in the end (delta: -22.2 MB). Peak memory consumption was 524.6 MB. Max. memory is 7.1 GB. [2020-10-14 05:02:44,270 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 147.3 MB. Free memory was 121.9 MB in the beginning and 121.5 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 678.93 ms. Allocated memory was 147.3 MB in the beginning and 203.4 MB in the end (delta: 56.1 MB). Free memory was 101.2 MB in the beginning and 165.9 MB in the end (delta: -64.7 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 65.50 ms. Allocated memory is still 203.4 MB. Free memory was 165.9 MB in the beginning and 163.1 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 727.37 ms. Allocated memory is still 203.4 MB. Free memory was 163.1 MB in the beginning and 111.7 MB in the end (delta: 51.5 MB). Peak memory consumption was 51.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 51113.34 ms. Allocated memory was 203.4 MB in the beginning and 750.3 MB in the end (delta: 546.8 MB). Free memory was 110.7 MB in the beginning and 132.9 MB in the end (delta: -22.2 MB). Peak memory consumption was 524.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 630]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L616] CALL, EXPR _get_nondet_int(2, 5) [L609] int len = from; [L610] len < until && __VERIFIER_nondet_int() [L610] len < until && __VERIFIER_nondet_int() [L610] COND FALSE !(len < until && __VERIFIER_nondet_int()) [L613] return len; [L616] RET, EXPR _get_nondet_int(2, 5) [L616] const int len = _get_nondet_int(2, 5); [L617] SLL s = sll_create(len); [L617] CALL, EXPR sll_create(len) [L564] SLL head = ((void *)0); [L565] EXPR len-- [L565] COND TRUE len-- > 0 [L566] SLL new_head = (SLL) malloc(sizeof(struct node)); [L567] COND FALSE !(((void *)0) == new_head) [L570] new_head->next = head [L571] head = new_head [L565] EXPR len-- [L565] COND TRUE len-- > 0 [L566] SLL new_head = (SLL) malloc(sizeof(struct node)); [L567] COND FALSE !(((void *)0) == new_head) [L570] new_head->next = head [L571] head = new_head [L565] EXPR len-- [L565] COND FALSE !(len-- > 0) [L573] return head; [L617] RET, EXPR sll_create(len) [L617] SLL s = sll_create(len); [L618] CALL, EXPR _get_nondet_int(0, len - 1) [L609] int len = from; [L610] len < until && __VERIFIER_nondet_int() [L610] len < until && __VERIFIER_nondet_int() [L610] COND TRUE len < until && __VERIFIER_nondet_int() [L611] len++ [L610] len < until && __VERIFIER_nondet_int() [L610] COND FALSE !(len < until && __VERIFIER_nondet_int()) [L613] return len; [L618] RET, EXPR _get_nondet_int(0, len - 1) [L618] const int k = _get_nondet_int(0, len - 1); [L619] int i = 0; [L620] i < k && __VERIFIER_nondet_int() [L620] i < k && __VERIFIER_nondet_int() [L620] COND FALSE !(i < k && __VERIFIER_nondet_int()) [L625] EXPR \read(s) [L625] CALL, EXPR sll_length(s) [L576] int len = 0; [L577] COND TRUE \read(head) [L578] len++ [L579] EXPR head->next [L579] head = head->next [L577] COND TRUE \read(head) [L578] len++ [L579] EXPR head->next [L579] head = head->next [L577] COND FALSE !(\read(head)) [L581] return len; [L625] RET, EXPR sll_length(s) [L625] COND TRUE k + len != sll_length(s) [L630] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 51.0s, OverallIterations: 16, TraceHistogramMax: 5, AutomataDifference: 12.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 923 SDtfs, 1161 SDslu, 5301 SDs, 0 SdLazy, 7034 SolverSat, 567 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 452 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 297 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 611 ImplicationChecksByTransitivity, 7.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=150occurred in iteration=15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 15 MinimizatonAttempts, 320 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 37.9s InterpolantComputationTime, 817 NumberOfCodeBlocks, 817 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 745 ConstructedInterpolants, 0 QuantifiedInterpolants, 842563 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 15 InterpolantComputations, 3 PerfectInterpolantSequences, 110/244 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...