/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-ext2-properties/list_and_tree_cnstr-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 08:59:11,449 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 08:59:11,453 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 08:59:11,499 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 08:59:11,500 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 08:59:11,512 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 08:59:11,514 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 08:59:11,518 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 08:59:11,522 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 08:59:11,526 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 08:59:11,527 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 08:59:11,528 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 08:59:11,528 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 08:59:11,532 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 08:59:11,535 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 08:59:11,537 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 08:59:11,539 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 08:59:11,540 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 08:59:11,542 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 08:59:11,553 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 08:59:11,556 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 08:59:11,557 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 08:59:11,558 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 08:59:11,559 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 08:59:11,562 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 08:59:11,563 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 08:59:11,563 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 08:59:11,566 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 08:59:11,567 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 08:59:11,569 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 08:59:11,570 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 08:59:11,571 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 08:59:11,572 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 08:59:11,573 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 08:59:11,575 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 08:59:11,575 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 08:59:11,576 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 08:59:11,576 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 08:59:11,576 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 08:59:11,578 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 08:59:11,579 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 08:59:11,580 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 08:59:11,632 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 08:59:11,633 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 08:59:11,635 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 08:59:11,636 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 08:59:11,636 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 08:59:11,636 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 08:59:11,637 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 08:59:11,637 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 08:59:11,637 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 08:59:11,637 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 08:59:11,638 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 08:59:11,639 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 08:59:11,639 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 08:59:11,639 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 08:59:11,640 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 08:59:11,640 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 08:59:11,640 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 08:59:11,640 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 08:59:11,640 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 08:59:11,641 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 08:59:11,641 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 08:59:11,641 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 08:59:11,641 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 08:59:11,641 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 08:59:11,642 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 08:59:11,642 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 08:59:11,642 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 08:59:11,642 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 08:59:11,642 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 08:59:11,643 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-09-25 08:59:12,110 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 08:59:12,128 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 08:59:12,132 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 08:59:12,134 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 08:59:12,135 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 08:59:12,136 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext2-properties/list_and_tree_cnstr-1.i [2020-09-25 08:59:12,219 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a162ddf28/9fd2c8c45a4943a390f648c24eb219f9/FLAGe05b60f1b [2020-09-25 08:59:12,850 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 08:59:12,851 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-ext2-properties/list_and_tree_cnstr-1.i [2020-09-25 08:59:12,867 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a162ddf28/9fd2c8c45a4943a390f648c24eb219f9/FLAGe05b60f1b [2020-09-25 08:59:13,139 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a162ddf28/9fd2c8c45a4943a390f648c24eb219f9 [2020-09-25 08:59:13,153 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 08:59:13,159 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 08:59:13,160 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 08:59:13,161 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 08:59:13,165 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 08:59:13,166 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:59:13" (1/1) ... [2020-09-25 08:59:13,170 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@695bec44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:13, skipping insertion in model container [2020-09-25 08:59:13,171 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:59:13" (1/1) ... [2020-09-25 08:59:13,180 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 08:59:13,228 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 08:59:13,696 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:59:13,709 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 08:59:13,762 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:59:13,817 INFO L208 MainTranslator]: Completed translation [2020-09-25 08:59:13,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:13 WrapperNode [2020-09-25 08:59:13,818 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 08:59:13,819 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 08:59:13,819 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 08:59:13,819 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 08:59:13,834 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:13" (1/1) ... [2020-09-25 08:59:13,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:13" (1/1) ... [2020-09-25 08:59:13,858 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:13" (1/1) ... [2020-09-25 08:59:13,858 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:13" (1/1) ... [2020-09-25 08:59:13,884 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:13" (1/1) ... [2020-09-25 08:59:13,894 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:13" (1/1) ... [2020-09-25 08:59:13,899 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:13" (1/1) ... [2020-09-25 08:59:13,906 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 08:59:13,907 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 08:59:13,907 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 08:59:13,907 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 08:59:13,909 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:13" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 08:59:13,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 08:59:13,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 08:59:13,995 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-25 08:59:13,995 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-25 08:59:13,996 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-25 08:59:13,996 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 08:59:13,996 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 08:59:13,998 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 08:59:13,998 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 08:59:13,998 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 08:59:13,998 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 08:59:13,998 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 08:59:13,998 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 08:59:13,999 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 08:59:13,999 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 08:59:14,000 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 08:59:14,000 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 08:59:14,000 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 08:59:14,000 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 08:59:14,001 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 08:59:14,001 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 08:59:14,002 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 08:59:14,002 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 08:59:14,002 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 08:59:14,002 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-25 08:59:14,003 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-25 08:59:14,003 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 08:59:14,003 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 08:59:14,003 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 08:59:14,003 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 08:59:14,004 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 08:59:14,004 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 08:59:14,004 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 08:59:14,004 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 08:59:14,004 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 08:59:14,004 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 08:59:14,005 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 08:59:14,005 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 08:59:14,005 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 08:59:14,007 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 08:59:14,007 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 08:59:14,007 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 08:59:14,007 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 08:59:14,008 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 08:59:14,008 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 08:59:14,009 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 08:59:14,009 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 08:59:14,009 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 08:59:14,010 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 08:59:14,010 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 08:59:14,010 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 08:59:14,010 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 08:59:14,010 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 08:59:14,011 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 08:59:14,011 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 08:59:14,011 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 08:59:14,011 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 08:59:14,012 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 08:59:14,012 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 08:59:14,012 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 08:59:14,012 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 08:59:14,012 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 08:59:14,012 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 08:59:14,013 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 08:59:14,013 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 08:59:14,013 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 08:59:14,013 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 08:59:14,014 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 08:59:14,014 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 08:59:14,015 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 08:59:14,015 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 08:59:14,017 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 08:59:14,017 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 08:59:14,017 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 08:59:14,017 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 08:59:14,017 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 08:59:14,018 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 08:59:14,018 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 08:59:14,018 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 08:59:14,018 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 08:59:14,018 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 08:59:14,018 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 08:59:14,019 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 08:59:14,019 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 08:59:14,019 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 08:59:14,019 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 08:59:14,019 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 08:59:14,019 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 08:59:14,019 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 08:59:14,020 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 08:59:14,020 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 08:59:14,020 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 08:59:14,020 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 08:59:14,020 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 08:59:14,020 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 08:59:14,021 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 08:59:14,021 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 08:59:14,021 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 08:59:14,021 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 08:59:14,021 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 08:59:14,021 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 08:59:14,021 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 08:59:14,022 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 08:59:14,022 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 08:59:14,022 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 08:59:14,022 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 08:59:14,022 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 08:59:14,022 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 08:59:14,022 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 08:59:14,023 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 08:59:14,023 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 08:59:14,023 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 08:59:14,023 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 08:59:14,023 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-25 08:59:14,023 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 08:59:14,023 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 08:59:14,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 08:59:14,025 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 08:59:14,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 08:59:14,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 08:59:14,025 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 08:59:14,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 08:59:14,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 08:59:14,422 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-25 08:59:14,936 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 08:59:14,936 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-25 08:59:14,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:59:14 BoogieIcfgContainer [2020-09-25 08:59:14,943 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 08:59:14,945 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 08:59:14,945 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 08:59:14,949 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 08:59:14,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 08:59:13" (1/3) ... [2020-09-25 08:59:14,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67e5220b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:59:14, skipping insertion in model container [2020-09-25 08:59:14,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:13" (2/3) ... [2020-09-25 08:59:14,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67e5220b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:59:14, skipping insertion in model container [2020-09-25 08:59:14,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:59:14" (3/3) ... [2020-09-25 08:59:14,954 INFO L109 eAbstractionObserver]: Analyzing ICFG list_and_tree_cnstr-1.i [2020-09-25 08:59:14,967 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 08:59:14,978 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 08:59:14,999 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 08:59:15,029 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 08:59:15,030 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 08:59:15,030 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 08:59:15,030 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 08:59:15,030 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 08:59:15,031 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 08:59:15,031 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 08:59:15,031 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 08:59:15,059 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states. [2020-09-25 08:59:15,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-25 08:59:15,071 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:59:15,072 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:59:15,072 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:59:15,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:59:15,079 INFO L82 PathProgramCache]: Analyzing trace with hash -652445128, now seen corresponding path program 1 times [2020-09-25 08:59:15,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:59:15,091 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1261145582] [2020-09-25 08:59:15,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:59:15,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:15,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:15,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:15,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:15,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:15,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:15,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:15,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:16,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:16,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 08:59:16,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 08:59:16,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 889 [2020-09-25 08:59:16,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:16,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:16,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:59:16,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-25 08:59:16,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:59:16,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 08:59:16,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:59:16,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:16,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:16,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:16,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:59:16,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:16,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 08:59:16,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:16,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:16,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:59:16,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:16,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:59:16,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:16,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:59:16,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1261145582] [2020-09-25 08:59:16,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:59:16,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 08:59:16,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778601386] [2020-09-25 08:59:16,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 08:59:16,335 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:59:16,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 08:59:16,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:59:16,357 INFO L87 Difference]: Start difference. First operand 177 states. Second operand 3 states. [2020-09-25 08:59:16,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:59:16,774 INFO L93 Difference]: Finished difference Result 342 states and 400 transitions. [2020-09-25 08:59:16,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 08:59:16,776 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-09-25 08:59:16,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:59:16,791 INFO L225 Difference]: With dead ends: 342 [2020-09-25 08:59:16,791 INFO L226 Difference]: Without dead ends: 166 [2020-09-25 08:59:16,797 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:59:16,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-09-25 08:59:16,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2020-09-25 08:59:16,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-09-25 08:59:16,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 183 transitions. [2020-09-25 08:59:16,863 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 183 transitions. Word has length 31 [2020-09-25 08:59:16,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:59:16,863 INFO L479 AbstractCegarLoop]: Abstraction has 166 states and 183 transitions. [2020-09-25 08:59:16,864 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 08:59:16,864 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 183 transitions. [2020-09-25 08:59:16,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-25 08:59:16,867 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:59:16,867 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:59:16,868 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 08:59:16,868 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:59:16,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:59:16,869 INFO L82 PathProgramCache]: Analyzing trace with hash 473660712, now seen corresponding path program 1 times [2020-09-25 08:59:16,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:59:16,869 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1252889113] [2020-09-25 08:59:16,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:59:16,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:16,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:16,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:17,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:17,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 08:59:17,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:59:17,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 490 [2020-09-25 08:59:17,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:17,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:17,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:59:17,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-25 08:59:17,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 08:59:17,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:17,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:59:17,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:17,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:17,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:17,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:59:17,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:17,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 08:59:17,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:17,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:17,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:59:17,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:17,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:59:17,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:17,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:59:17,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1252889113] [2020-09-25 08:59:17,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:59:17,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 08:59:17,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853032505] [2020-09-25 08:59:17,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 08:59:17,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:59:17,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 08:59:17,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 08:59:17,500 INFO L87 Difference]: Start difference. First operand 166 states and 183 transitions. Second operand 7 states. [2020-09-25 08:59:17,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:59:17,979 INFO L93 Difference]: Finished difference Result 243 states and 265 transitions. [2020-09-25 08:59:17,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 08:59:17,979 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 41 [2020-09-25 08:59:17,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:59:17,982 INFO L225 Difference]: With dead ends: 243 [2020-09-25 08:59:17,983 INFO L226 Difference]: Without dead ends: 237 [2020-09-25 08:59:17,984 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 08:59:17,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-09-25 08:59:17,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 179. [2020-09-25 08:59:17,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-09-25 08:59:18,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 199 transitions. [2020-09-25 08:59:18,001 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 199 transitions. Word has length 41 [2020-09-25 08:59:18,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:59:18,001 INFO L479 AbstractCegarLoop]: Abstraction has 179 states and 199 transitions. [2020-09-25 08:59:18,001 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 08:59:18,002 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 199 transitions. [2020-09-25 08:59:18,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-25 08:59:18,004 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:59:18,004 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:59:18,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 08:59:18,007 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:59:18,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:59:18,007 INFO L82 PathProgramCache]: Analyzing trace with hash -1367895296, now seen corresponding path program 1 times [2020-09-25 08:59:18,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:59:18,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1345959332] [2020-09-25 08:59:18,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:59:18,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:18,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:18,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:18,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:18,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 08:59:18,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:59:18,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 584 [2020-09-25 08:59:18,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:18,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:18,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:59:18,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-25 08:59:18,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 08:59:18,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:18,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:59:18,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:18,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:18,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:18,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:59:18,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:18,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:59:18,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:18,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:18,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:59:18,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:18,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:59:18,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:18,731 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:59:18,732 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1345959332] [2020-09-25 08:59:18,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:59:18,733 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 08:59:18,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522097358] [2020-09-25 08:59:18,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 08:59:18,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:59:18,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 08:59:18,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 08:59:18,736 INFO L87 Difference]: Start difference. First operand 179 states and 199 transitions. Second operand 7 states. [2020-09-25 08:59:19,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:59:19,187 INFO L93 Difference]: Finished difference Result 246 states and 268 transitions. [2020-09-25 08:59:19,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 08:59:19,189 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 47 [2020-09-25 08:59:19,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:59:19,191 INFO L225 Difference]: With dead ends: 246 [2020-09-25 08:59:19,192 INFO L226 Difference]: Without dead ends: 231 [2020-09-25 08:59:19,193 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 08:59:19,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-09-25 08:59:19,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 176. [2020-09-25 08:59:19,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-09-25 08:59:19,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 195 transitions. [2020-09-25 08:59:19,207 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 195 transitions. Word has length 47 [2020-09-25 08:59:19,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:59:19,207 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 195 transitions. [2020-09-25 08:59:19,207 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 08:59:19,207 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 195 transitions. [2020-09-25 08:59:19,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-25 08:59:19,210 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:59:19,210 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:59:19,210 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 08:59:19,210 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:59:19,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:59:19,211 INFO L82 PathProgramCache]: Analyzing trace with hash -331213520, now seen corresponding path program 1 times [2020-09-25 08:59:19,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:59:19,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [571252320] [2020-09-25 08:59:19,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:59:19,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:19,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:19,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:19,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:19,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 08:59:19,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:59:19,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 522 [2020-09-25 08:59:19,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:19,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:19,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:59:19,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 08:59:19,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 08:59:19,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:19,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:59:19,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:19,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:19,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:19,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:59:19,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:19,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:59:19,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:19,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:19,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:59:19,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:19,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:59:19,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:19,799 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 08:59:19,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [571252320] [2020-09-25 08:59:19,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:59:19,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 08:59:19,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611879815] [2020-09-25 08:59:19,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 08:59:19,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:59:19,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 08:59:19,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:59:19,802 INFO L87 Difference]: Start difference. First operand 176 states and 195 transitions. Second operand 5 states. [2020-09-25 08:59:20,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:59:20,087 INFO L93 Difference]: Finished difference Result 271 states and 301 transitions. [2020-09-25 08:59:20,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:59:20,087 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 47 [2020-09-25 08:59:20,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:59:20,091 INFO L225 Difference]: With dead ends: 271 [2020-09-25 08:59:20,091 INFO L226 Difference]: Without dead ends: 211 [2020-09-25 08:59:20,092 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 08:59:20,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-09-25 08:59:20,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 210. [2020-09-25 08:59:20,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-09-25 08:59:20,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 234 transitions. [2020-09-25 08:59:20,105 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 234 transitions. Word has length 47 [2020-09-25 08:59:20,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:59:20,106 INFO L479 AbstractCegarLoop]: Abstraction has 210 states and 234 transitions. [2020-09-25 08:59:20,106 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 08:59:20,106 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 234 transitions. [2020-09-25 08:59:20,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-25 08:59:20,108 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:59:20,108 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:59:20,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 08:59:20,109 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:59:20,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:59:20,109 INFO L82 PathProgramCache]: Analyzing trace with hash -775600822, now seen corresponding path program 1 times [2020-09-25 08:59:20,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:59:20,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1839551528] [2020-09-25 08:59:20,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:59:20,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:20,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:20,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:20,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:21,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:21,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 08:59:21,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:59:21,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1240 [2020-09-25 08:59:21,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:21,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:21,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:59:21,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-25 08:59:21,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 08:59:21,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:21,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:59:21,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:21,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:21,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:21,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:59:21,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:21,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:59:21,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:21,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:21,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:59:21,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:21,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:59:21,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:21,427 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 08:59:21,428 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1839551528] [2020-09-25 08:59:21,428 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:59:21,428 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 08:59:21,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879005442] [2020-09-25 08:59:21,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 08:59:21,430 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:59:21,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 08:59:21,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:59:21,430 INFO L87 Difference]: Start difference. First operand 210 states and 234 transitions. Second operand 4 states. [2020-09-25 08:59:21,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:59:21,693 INFO L93 Difference]: Finished difference Result 341 states and 383 transitions. [2020-09-25 08:59:21,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 08:59:21,694 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-09-25 08:59:21,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:59:21,696 INFO L225 Difference]: With dead ends: 341 [2020-09-25 08:59:21,696 INFO L226 Difference]: Without dead ends: 212 [2020-09-25 08:59:21,697 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:59:21,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-09-25 08:59:21,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2020-09-25 08:59:21,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-09-25 08:59:21,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 236 transitions. [2020-09-25 08:59:21,720 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 236 transitions. Word has length 60 [2020-09-25 08:59:21,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:59:21,720 INFO L479 AbstractCegarLoop]: Abstraction has 212 states and 236 transitions. [2020-09-25 08:59:21,721 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 08:59:21,721 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 236 transitions. [2020-09-25 08:59:21,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-25 08:59:21,722 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:59:21,722 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:59:21,722 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 08:59:21,722 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:59:21,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:59:21,724 INFO L82 PathProgramCache]: Analyzing trace with hash 1629716359, now seen corresponding path program 1 times [2020-09-25 08:59:21,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:59:21,724 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [610625035] [2020-09-25 08:59:21,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:59:21,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:21,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:21,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:21,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 08:59:21,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:21,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-09-25 08:59:21,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:21,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:21,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:59:21,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 08:59:21,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 08:59:21,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:22,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:59:22,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:22,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:22,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:22,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:59:22,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:22,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:59:22,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:22,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:22,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:59:22,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:22,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:59:22,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:22,090 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 08:59:22,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [610625035] [2020-09-25 08:59:22,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:59:22,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 08:59:22,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319845267] [2020-09-25 08:59:22,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 08:59:22,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:59:22,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 08:59:22,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 08:59:22,094 INFO L87 Difference]: Start difference. First operand 212 states and 236 transitions. Second operand 7 states. [2020-09-25 08:59:22,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:59:22,498 INFO L93 Difference]: Finished difference Result 264 states and 290 transitions. [2020-09-25 08:59:22,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 08:59:22,498 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 62 [2020-09-25 08:59:22,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:59:22,502 INFO L225 Difference]: With dead ends: 264 [2020-09-25 08:59:22,502 INFO L226 Difference]: Without dead ends: 240 [2020-09-25 08:59:22,503 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 08:59:22,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-09-25 08:59:22,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 207. [2020-09-25 08:59:22,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2020-09-25 08:59:22,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 230 transitions. [2020-09-25 08:59:22,511 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 230 transitions. Word has length 62 [2020-09-25 08:59:22,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:59:22,514 INFO L479 AbstractCegarLoop]: Abstraction has 207 states and 230 transitions. [2020-09-25 08:59:22,514 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 08:59:22,515 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 230 transitions. [2020-09-25 08:59:22,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 08:59:22,517 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:59:22,518 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:59:22,518 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 08:59:22,519 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:59:22,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:59:22,519 INFO L82 PathProgramCache]: Analyzing trace with hash 852438762, now seen corresponding path program 1 times [2020-09-25 08:59:22,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:59:22,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [179093288] [2020-09-25 08:59:22,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:59:22,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:22,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:22,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:24,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:24,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 08:59:24,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:59:24,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1453 [2020-09-25 08:59:24,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:24,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:24,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 08:59:24,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 08:59:24,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 08:59:24,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:24,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:59:24,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:24,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:24,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:24,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:59:24,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:24,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:59:24,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:24,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:24,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:59:24,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:24,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:59:24,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:59:24,295 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 08:59:24,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [179093288] [2020-09-25 08:59:24,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:59:24,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 08:59:24,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173136901] [2020-09-25 08:59:24,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 08:59:24,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:59:24,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 08:59:24,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-09-25 08:59:24,299 INFO L87 Difference]: Start difference. First operand 207 states and 230 transitions. Second operand 11 states. [2020-09-25 08:59:25,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:59:25,004 INFO L93 Difference]: Finished difference Result 288 states and 315 transitions. [2020-09-25 08:59:25,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 08:59:25,004 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 67 [2020-09-25 08:59:25,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:59:25,006 INFO L225 Difference]: With dead ends: 288 [2020-09-25 08:59:25,007 INFO L226 Difference]: Without dead ends: 282 [2020-09-25 08:59:25,007 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2020-09-25 08:59:25,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-09-25 08:59:25,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 226. [2020-09-25 08:59:25,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-09-25 08:59:25,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 251 transitions. [2020-09-25 08:59:25,017 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 251 transitions. Word has length 67 [2020-09-25 08:59:25,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:59:25,019 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 251 transitions. [2020-09-25 08:59:25,019 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 08:59:25,019 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 251 transitions. [2020-09-25 08:59:25,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 08:59:25,021 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:59:25,021 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:59:25,021 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 08:59:25,022 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:59:25,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:59:25,022 INFO L82 PathProgramCache]: Analyzing trace with hash -1742912072, now seen corresponding path program 1 times [2020-09-25 08:59:25,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:59:25,023 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [981179532] [2020-09-25 08:59:25,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:59:25,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:25,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:25,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:26,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:26,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 08:59:26,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:59:26,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1065 [2020-09-25 08:59:26,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:26,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:26,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 08:59:26,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 08:59:26,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 08:59:26,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:26,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:59:26,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:26,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:26,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:26,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:59:26,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:26,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:59:26,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:26,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:26,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:59:26,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:26,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:59:26,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:26,493 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 08:59:26,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [981179532] [2020-09-25 08:59:26,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:59:26,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 08:59:26,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844204227] [2020-09-25 08:59:26,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 08:59:26,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:59:26,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 08:59:26,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-09-25 08:59:26,497 INFO L87 Difference]: Start difference. First operand 226 states and 251 transitions. Second operand 15 states. [2020-09-25 08:59:28,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:59:28,091 INFO L93 Difference]: Finished difference Result 329 states and 361 transitions. [2020-09-25 08:59:28,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 08:59:28,091 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 67 [2020-09-25 08:59:28,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:59:28,095 INFO L225 Difference]: With dead ends: 329 [2020-09-25 08:59:28,095 INFO L226 Difference]: Without dead ends: 323 [2020-09-25 08:59:28,097 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=226, Invalid=766, Unknown=0, NotChecked=0, Total=992 [2020-09-25 08:59:28,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-09-25 08:59:28,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 238. [2020-09-25 08:59:28,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-09-25 08:59:28,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 264 transitions. [2020-09-25 08:59:28,116 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 264 transitions. Word has length 67 [2020-09-25 08:59:28,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:59:28,116 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 264 transitions. [2020-09-25 08:59:28,116 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 08:59:28,117 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 264 transitions. [2020-09-25 08:59:28,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 08:59:28,118 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:59:28,121 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:59:28,122 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 08:59:28,122 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:59:28,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:59:28,122 INFO L82 PathProgramCache]: Analyzing trace with hash -1875154110, now seen corresponding path program 1 times [2020-09-25 08:59:28,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:59:28,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1576843819] [2020-09-25 08:59:28,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:59:28,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:28,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:28,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:29,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:30,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:31,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:31,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 08:59:31,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 08:59:31,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3728 [2020-09-25 08:59:31,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:31,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:31,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 08:59:31,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 08:59:31,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 08:59:31,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:59:32,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:59:32,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:32,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:32,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:32,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:59:32,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:32,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:59:32,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:32,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:32,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:59:32,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:32,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:59:32,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:59:32,176 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 08:59:32,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1576843819] [2020-09-25 08:59:32,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:59:32,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 08:59:32,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381869037] [2020-09-25 08:59:32,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 08:59:32,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:59:32,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 08:59:32,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-25 08:59:32,185 INFO L87 Difference]: Start difference. First operand 238 states and 264 transitions. Second operand 16 states. [2020-09-25 08:59:33,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:59:33,609 INFO L93 Difference]: Finished difference Result 310 states and 340 transitions. [2020-09-25 08:59:33,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 08:59:33,609 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 73 [2020-09-25 08:59:33,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:59:33,611 INFO L225 Difference]: With dead ends: 310 [2020-09-25 08:59:33,612 INFO L226 Difference]: Without dead ends: 304 [2020-09-25 08:59:33,617 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=177, Invalid=815, Unknown=0, NotChecked=0, Total=992 [2020-09-25 08:59:33,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-09-25 08:59:33,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 252. [2020-09-25 08:59:33,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-09-25 08:59:33,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 280 transitions. [2020-09-25 08:59:33,626 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 280 transitions. Word has length 73 [2020-09-25 08:59:33,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:59:33,626 INFO L479 AbstractCegarLoop]: Abstraction has 252 states and 280 transitions. [2020-09-25 08:59:33,626 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 08:59:33,627 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 280 transitions. [2020-09-25 08:59:33,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 08:59:33,633 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:59:33,633 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:59:33,634 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 08:59:33,634 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:59:33,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:59:33,634 INFO L82 PathProgramCache]: Analyzing trace with hash -838472334, now seen corresponding path program 1 times [2020-09-25 08:59:33,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:59:33,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1473891268] [2020-09-25 08:59:33,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:59:33,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:33,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:34,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:34,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 08:59:34,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:34,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 649 [2020-09-25 08:59:34,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:34,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:34,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 08:59:34,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 08:59:34,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 08:59:34,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:59:34,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:59:34,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:34,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:34,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:34,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:59:34,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:34,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:59:34,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:34,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:34,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:59:34,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:34,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:59:34,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:34,634 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 08:59:34,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1473891268] [2020-09-25 08:59:34,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:59:34,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 08:59:34,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71858194] [2020-09-25 08:59:34,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 08:59:34,636 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:59:34,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 08:59:34,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-25 08:59:34,636 INFO L87 Difference]: Start difference. First operand 252 states and 280 transitions. Second operand 16 states. [2020-09-25 08:59:36,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:59:36,049 INFO L93 Difference]: Finished difference Result 319 states and 350 transitions. [2020-09-25 08:59:36,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 08:59:36,050 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 73 [2020-09-25 08:59:36,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:59:36,051 INFO L225 Difference]: With dead ends: 319 [2020-09-25 08:59:36,052 INFO L226 Difference]: Without dead ends: 313 [2020-09-25 08:59:36,053 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=177, Invalid=815, Unknown=0, NotChecked=0, Total=992 [2020-09-25 08:59:36,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2020-09-25 08:59:36,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 256. [2020-09-25 08:59:36,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-09-25 08:59:36,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 284 transitions. [2020-09-25 08:59:36,061 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 284 transitions. Word has length 73 [2020-09-25 08:59:36,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:59:36,062 INFO L479 AbstractCegarLoop]: Abstraction has 256 states and 284 transitions. [2020-09-25 08:59:36,062 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 08:59:36,062 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 284 transitions. [2020-09-25 08:59:36,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 08:59:36,063 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:59:36,063 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:59:36,064 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 08:59:36,064 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:59:36,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:59:36,064 INFO L82 PathProgramCache]: Analyzing trace with hash -1654345840, now seen corresponding path program 1 times [2020-09-25 08:59:36,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:59:36,065 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [793888988] [2020-09-25 08:59:36,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:59:36,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:36,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:36,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:36,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 08:59:36,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:36,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 732 [2020-09-25 08:59:36,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:36,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:36,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 08:59:36,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 08:59:36,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 08:59:36,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:59:37,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:59:37,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:37,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:37,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:37,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:59:37,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:37,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:59:37,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:37,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:37,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:59:37,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:37,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:59:37,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:59:37,222 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 08:59:37,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [793888988] [2020-09-25 08:59:37,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:59:37,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 08:59:37,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287947954] [2020-09-25 08:59:37,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 08:59:37,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:59:37,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 08:59:37,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-25 08:59:37,225 INFO L87 Difference]: Start difference. First operand 256 states and 284 transitions. Second operand 16 states. [2020-09-25 08:59:38,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:59:38,786 INFO L93 Difference]: Finished difference Result 331 states and 362 transitions. [2020-09-25 08:59:38,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 08:59:38,787 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 73 [2020-09-25 08:59:38,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:59:38,789 INFO L225 Difference]: With dead ends: 331 [2020-09-25 08:59:38,790 INFO L226 Difference]: Without dead ends: 325 [2020-09-25 08:59:38,791 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=177, Invalid=815, Unknown=0, NotChecked=0, Total=992 [2020-09-25 08:59:38,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2020-09-25 08:59:38,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 258. [2020-09-25 08:59:38,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-09-25 08:59:38,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 287 transitions. [2020-09-25 08:59:38,802 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 287 transitions. Word has length 73 [2020-09-25 08:59:38,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:59:38,806 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 287 transitions. [2020-09-25 08:59:38,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 08:59:38,807 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 287 transitions. [2020-09-25 08:59:38,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 08:59:38,808 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:59:38,808 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:59:38,808 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 08:59:38,809 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:59:38,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:59:38,811 INFO L82 PathProgramCache]: Analyzing trace with hash -617664064, now seen corresponding path program 1 times [2020-09-25 08:59:38,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:59:38,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2057271886] [2020-09-25 08:59:38,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:59:38,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:38,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:39,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:40,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:40,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 08:59:40,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:59:40,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1183 [2020-09-25 08:59:40,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:40,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:40,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 08:59:40,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 08:59:40,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 08:59:40,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:59:40,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:59:40,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:40,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:40,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:40,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:59:40,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:40,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:59:40,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:40,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:40,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:59:40,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:40,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:59:40,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:40,455 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 08:59:40,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2057271886] [2020-09-25 08:59:40,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:59:40,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 08:59:40,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956958065] [2020-09-25 08:59:40,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 08:59:40,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:59:40,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 08:59:40,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-09-25 08:59:40,458 INFO L87 Difference]: Start difference. First operand 258 states and 287 transitions. Second operand 16 states. [2020-09-25 08:59:42,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:59:42,091 INFO L93 Difference]: Finished difference Result 336 states and 368 transitions. [2020-09-25 08:59:42,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 08:59:42,092 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 73 [2020-09-25 08:59:42,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:59:42,094 INFO L225 Difference]: With dead ends: 336 [2020-09-25 08:59:42,094 INFO L226 Difference]: Without dead ends: 330 [2020-09-25 08:59:42,095 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=174, Invalid=818, Unknown=0, NotChecked=0, Total=992 [2020-09-25 08:59:42,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2020-09-25 08:59:42,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 251. [2020-09-25 08:59:42,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2020-09-25 08:59:42,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 278 transitions. [2020-09-25 08:59:42,108 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 278 transitions. Word has length 73 [2020-09-25 08:59:42,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:59:42,109 INFO L479 AbstractCegarLoop]: Abstraction has 251 states and 278 transitions. [2020-09-25 08:59:42,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 08:59:42,109 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 278 transitions. [2020-09-25 08:59:42,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-09-25 08:59:42,110 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:59:42,111 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:59:42,111 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 08:59:42,111 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:59:42,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:59:42,112 INFO L82 PathProgramCache]: Analyzing trace with hash 342604767, now seen corresponding path program 2 times [2020-09-25 08:59:42,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:59:42,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1133293330] [2020-09-25 08:59:42,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:59:42,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:42,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:42,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:44,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:44,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 08:59:44,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:59:44,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2479 [2020-09-25 08:59:44,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:44,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:44,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 08:59:44,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 08:59:44,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 08:59:44,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:59:44,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:59:44,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:44,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:44,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:44,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:59:44,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:44,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:59:44,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:44,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:44,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:59:44,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:44,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:59:44,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:44,957 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 08:59:44,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1133293330] [2020-09-25 08:59:44,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:59:44,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-25 08:59:44,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936468194] [2020-09-25 08:59:44,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-25 08:59:44,960 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:59:44,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-25 08:59:44,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2020-09-25 08:59:44,961 INFO L87 Difference]: Start difference. First operand 251 states and 278 transitions. Second operand 18 states. [2020-09-25 08:59:46,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:59:46,602 INFO L93 Difference]: Finished difference Result 377 states and 413 transitions. [2020-09-25 08:59:46,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-25 08:59:46,603 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 78 [2020-09-25 08:59:46,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:59:46,605 INFO L225 Difference]: With dead ends: 377 [2020-09-25 08:59:46,605 INFO L226 Difference]: Without dead ends: 353 [2020-09-25 08:59:46,608 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=406, Invalid=1486, Unknown=0, NotChecked=0, Total=1892 [2020-09-25 08:59:46,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2020-09-25 08:59:46,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 272. [2020-09-25 08:59:46,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-09-25 08:59:46,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 301 transitions. [2020-09-25 08:59:46,622 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 301 transitions. Word has length 78 [2020-09-25 08:59:46,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:59:46,622 INFO L479 AbstractCegarLoop]: Abstraction has 272 states and 301 transitions. [2020-09-25 08:59:46,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-25 08:59:46,622 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 301 transitions. [2020-09-25 08:59:46,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-09-25 08:59:46,624 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:59:46,624 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:59:46,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 08:59:46,624 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:59:46,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:59:46,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1736898641, now seen corresponding path program 1 times [2020-09-25 08:59:46,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:59:46,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1516008987] [2020-09-25 08:59:46,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:59:46,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:46,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:46,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:49,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:49,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 08:59:49,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:59:49,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3119 [2020-09-25 08:59:49,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:49,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:49,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 08:59:49,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 08:59:49,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 08:59:49,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:59:50,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:59:50,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:50,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:50,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:50,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:59:50,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:50,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:59:50,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:50,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:50,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:59:50,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:50,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:59:50,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:59:50,086 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 08:59:50,087 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1516008987] [2020-09-25 08:59:50,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:59:50,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-25 08:59:50,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746114518] [2020-09-25 08:59:50,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-25 08:59:50,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:59:50,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-25 08:59:50,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2020-09-25 08:59:50,089 INFO L87 Difference]: Start difference. First operand 272 states and 301 transitions. Second operand 18 states. [2020-09-25 08:59:51,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:59:51,766 INFO L93 Difference]: Finished difference Result 392 states and 429 transitions. [2020-09-25 08:59:51,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-25 08:59:51,767 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 78 [2020-09-25 08:59:51,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:59:51,769 INFO L225 Difference]: With dead ends: 392 [2020-09-25 08:59:51,769 INFO L226 Difference]: Without dead ends: 386 [2020-09-25 08:59:51,770 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=406, Invalid=1486, Unknown=0, NotChecked=0, Total=1892 [2020-09-25 08:59:51,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2020-09-25 08:59:51,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 284. [2020-09-25 08:59:51,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2020-09-25 08:59:51,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 314 transitions. [2020-09-25 08:59:51,783 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 314 transitions. Word has length 78 [2020-09-25 08:59:51,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:59:51,784 INFO L479 AbstractCegarLoop]: Abstraction has 284 states and 314 transitions. [2020-09-25 08:59:51,784 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-25 08:59:51,784 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 314 transitions. [2020-09-25 08:59:51,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-25 08:59:51,785 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:59:51,785 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:59:51,785 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-25 08:59:51,786 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:59:51,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:59:51,786 INFO L82 PathProgramCache]: Analyzing trace with hash 1698374602, now seen corresponding path program 1 times [2020-09-25 08:59:51,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:59:51,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [36705756] [2020-09-25 08:59:51,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:59:51,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:51,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:52,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:52,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 08:59:52,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:52,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 572 [2020-09-25 08:59:52,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:52,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:52,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 08:59:52,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 08:59:52,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 08:59:52,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:59:52,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:59:52,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:52,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:52,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:52,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:59:52,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:52,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:59:52,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:52,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:52,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:59:52,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:52,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:59:52,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:59:52,693 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 08:59:52,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [36705756] [2020-09-25 08:59:52,694 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:59:52,694 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 08:59:52,694 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986896880] [2020-09-25 08:59:52,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 08:59:52,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:59:52,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 08:59:52,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-25 08:59:52,695 INFO L87 Difference]: Start difference. First operand 284 states and 314 transitions. Second operand 16 states. [2020-09-25 08:59:54,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:59:54,209 INFO L93 Difference]: Finished difference Result 357 states and 391 transitions. [2020-09-25 08:59:54,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-25 08:59:54,209 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 79 [2020-09-25 08:59:54,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:59:54,211 INFO L225 Difference]: With dead ends: 357 [2020-09-25 08:59:54,211 INFO L226 Difference]: Without dead ends: 342 [2020-09-25 08:59:54,212 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=203, Invalid=987, Unknown=0, NotChecked=0, Total=1190 [2020-09-25 08:59:54,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2020-09-25 08:59:54,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 290. [2020-09-25 08:59:54,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-09-25 08:59:54,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 320 transitions. [2020-09-25 08:59:54,222 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 320 transitions. Word has length 79 [2020-09-25 08:59:54,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:59:54,223 INFO L479 AbstractCegarLoop]: Abstraction has 290 states and 320 transitions. [2020-09-25 08:59:54,223 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 08:59:54,223 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 320 transitions. [2020-09-25 08:59:54,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-25 08:59:54,224 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:59:54,224 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:59:54,225 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-25 08:59:54,225 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:59:54,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:59:54,225 INFO L82 PathProgramCache]: Analyzing trace with hash -1559910918, now seen corresponding path program 2 times [2020-09-25 08:59:54,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:59:54,226 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1842681922] [2020-09-25 08:59:54,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:59:54,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:54,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:54,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:54,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 08:59:54,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:54,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 552 [2020-09-25 08:59:54,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:54,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:54,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 08:59:54,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 08:59:54,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 08:59:54,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:59:55,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:59:55,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:55,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:55,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:55,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:59:55,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:55,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:59:55,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:55,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:55,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:59:55,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:55,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:59:55,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:55,134 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 08:59:55,134 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1842681922] [2020-09-25 08:59:55,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:59:55,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 08:59:55,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078791338] [2020-09-25 08:59:55,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 08:59:55,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:59:55,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 08:59:55,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-09-25 08:59:55,136 INFO L87 Difference]: Start difference. First operand 290 states and 320 transitions. Second operand 16 states. [2020-09-25 08:59:56,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:59:56,507 INFO L93 Difference]: Finished difference Result 337 states and 370 transitions. [2020-09-25 08:59:56,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 08:59:56,508 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 79 [2020-09-25 08:59:56,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:59:56,510 INFO L225 Difference]: With dead ends: 337 [2020-09-25 08:59:56,510 INFO L226 Difference]: Without dead ends: 307 [2020-09-25 08:59:56,513 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=165, Invalid=765, Unknown=0, NotChecked=0, Total=930 [2020-09-25 08:59:56,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2020-09-25 08:59:56,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 279. [2020-09-25 08:59:56,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2020-09-25 08:59:56,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 308 transitions. [2020-09-25 08:59:56,523 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 308 transitions. Word has length 79 [2020-09-25 08:59:56,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:59:56,523 INFO L479 AbstractCegarLoop]: Abstraction has 279 states and 308 transitions. [2020-09-25 08:59:56,523 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 08:59:56,523 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 308 transitions. [2020-09-25 08:59:56,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-25 08:59:56,524 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:59:56,525 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:59:56,525 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-25 08:59:56,525 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:59:56,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:59:56,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1643861864, now seen corresponding path program 2 times [2020-09-25 08:59:56,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:59:56,526 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [129257615] [2020-09-25 08:59:56,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:59:56,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:56,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:57,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:57,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 08:59:57,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:57,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 700 [2020-09-25 08:59:57,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:57,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:57,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 08:59:57,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 08:59:57,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 08:59:57,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:59:57,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:59:57,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:57,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:57,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:57,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:59:57,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:57,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:59:57,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:57,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:57,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:59:57,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:57,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:59:57,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:59:57,506 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 08:59:57,506 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [129257615] [2020-09-25 08:59:57,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:59:57,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 08:59:57,507 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645238444] [2020-09-25 08:59:57,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 08:59:57,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:59:57,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 08:59:57,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-25 08:59:57,508 INFO L87 Difference]: Start difference. First operand 279 states and 308 transitions. Second operand 16 states. [2020-09-25 08:59:59,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:59:59,036 INFO L93 Difference]: Finished difference Result 342 states and 374 transitions. [2020-09-25 08:59:59,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-25 08:59:59,037 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 79 [2020-09-25 08:59:59,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:59:59,038 INFO L225 Difference]: With dead ends: 342 [2020-09-25 08:59:59,038 INFO L226 Difference]: Without dead ends: 321 [2020-09-25 08:59:59,039 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=203, Invalid=987, Unknown=0, NotChecked=0, Total=1190 [2020-09-25 08:59:59,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2020-09-25 08:59:59,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 272. [2020-09-25 08:59:59,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-09-25 08:59:59,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 300 transitions. [2020-09-25 08:59:59,050 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 300 transitions. Word has length 79 [2020-09-25 08:59:59,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:59:59,051 INFO L479 AbstractCegarLoop]: Abstraction has 272 states and 300 transitions. [2020-09-25 08:59:59,051 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 08:59:59,051 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 300 transitions. [2020-09-25 08:59:59,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-25 08:59:59,056 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:59:59,057 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:59:59,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-25 08:59:59,057 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:59:59,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:59:59,057 INFO L82 PathProgramCache]: Analyzing trace with hash 1971811736, now seen corresponding path program 1 times [2020-09-25 08:59:59,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:59:59,058 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [678141009] [2020-09-25 08:59:59,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:59:59,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:59,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:59,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:00,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:00,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 09:00:00,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:00:00,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1767 [2020-09-25 09:00:00,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:00,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:00,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 09:00:00,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 09:00:00,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 09:00:00,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:01,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:00:01,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:01,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:01,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:01,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:00:01,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:01,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 09:00:01,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:01,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:01,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:00:01,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:01,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:00:01,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:00:01,136 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 09:00:01,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [678141009] [2020-09-25 09:00:01,137 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:00:01,137 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 09:00:01,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811808766] [2020-09-25 09:00:01,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 09:00:01,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:00:01,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 09:00:01,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-25 09:00:01,138 INFO L87 Difference]: Start difference. First operand 272 states and 300 transitions. Second operand 16 states.