/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 interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-01-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 16:01:56,566 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 16:01:56,570 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 16:01:56,614 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 16:01:56,614 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 16:01:56,623 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 16:01:56,626 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 16:01:56,629 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 16:01:56,632 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 16:01:56,635 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 16:01:56,636 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 16:01:56,638 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 16:01:56,638 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 16:01:56,641 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 16:01:56,644 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 16:01:56,645 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 16:01:56,647 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 16:01:56,648 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 16:01:56,650 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 16:01:56,658 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 16:01:56,661 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 16:01:56,662 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 16:01:56,663 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 16:01:56,664 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 16:01:56,676 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 16:01:56,677 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 16:01:56,677 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 16:01:56,684 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 16:01:56,685 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 16:01:56,689 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 16:01:56,689 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 16:01:56,690 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 16:01:56,692 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 16:01:56,693 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 16:01:56,694 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 16:01:56,695 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 16:01:56,695 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 16:01:56,696 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 16:01:56,697 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 16:01:56,698 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 16:01:56,699 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 16:01:56,700 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 [2020-09-24 16:01:56,745 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 16:01:56,746 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 16:01:56,748 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 16:01:56,748 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 16:01:56,748 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 16:01:56,749 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 16:01:56,749 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 16:01:56,749 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 16:01:56,749 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 16:01:56,750 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 16:01:56,751 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 16:01:56,751 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 16:01:56,751 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 16:01:56,752 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 16:01:56,752 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 16:01:56,752 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 16:01:56,752 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 16:01:56,753 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 16:01:56,753 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 16:01:56,753 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 16:01:56,753 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 16:01:56,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 16:01:56,754 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 16:01:56,754 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 16:01:56,754 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 16:01:56,754 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 16:01:56,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 16:01:56,754 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 16:01:56,755 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 16:01:56,755 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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-24 16:01:57,226 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 16:01:57,254 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 16:01:57,260 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 16:01:57,262 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 16:01:57,263 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 16:01:57,264 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-01-2.i [2020-09-24 16:01:57,362 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/442f57a72/c4d43c13306b4cbaa3d6bb02e7a3fa19/FLAG1472cf9c4 [2020-09-24 16:01:58,004 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 16:01:58,005 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/sll-01-2.i [2020-09-24 16:01:58,026 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/442f57a72/c4d43c13306b4cbaa3d6bb02e7a3fa19/FLAG1472cf9c4 [2020-09-24 16:01:58,269 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/442f57a72/c4d43c13306b4cbaa3d6bb02e7a3fa19 [2020-09-24 16:01:58,282 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 16:01:58,289 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 16:01:58,290 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 16:01:58,290 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 16:01:58,295 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 16:01:58,296 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:01:58" (1/1) ... [2020-09-24 16:01:58,300 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5db1276a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:58, skipping insertion in model container [2020-09-24 16:01:58,301 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:01:58" (1/1) ... [2020-09-24 16:01:58,310 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 16:01:58,366 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 16:01:58,904 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:01:58,915 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 16:01:58,971 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:01:59,033 INFO L208 MainTranslator]: Completed translation [2020-09-24 16:01:59,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:59 WrapperNode [2020-09-24 16:01:59,034 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 16:01:59,035 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 16:01:59,035 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 16:01:59,035 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 16:01:59,054 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:59" (1/1) ... [2020-09-24 16:01:59,057 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:59" (1/1) ... [2020-09-24 16:01:59,083 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:59" (1/1) ... [2020-09-24 16:01:59,084 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:59" (1/1) ... [2020-09-24 16:01:59,107 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:59" (1/1) ... [2020-09-24 16:01:59,120 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:59" (1/1) ... [2020-09-24 16:01:59,124 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:59" (1/1) ... [2020-09-24 16:01:59,132 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 16:01:59,133 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 16:01:59,133 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 16:01:59,133 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 16:01:59,135 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:59" (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 [2020-09-24 16:01:59,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 16:01:59,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 16:01:59,210 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 16:01:59,210 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-24 16:01:59,211 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-24 16:01:59,211 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-24 16:01:59,211 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-24 16:01:59,211 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-24 16:01:59,211 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-24 16:01:59,212 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-24 16:01:59,212 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-24 16:01:59,212 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-24 16:01:59,212 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-24 16:01:59,212 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-24 16:01:59,213 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-24 16:01:59,213 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-24 16:01:59,213 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-24 16:01:59,213 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-24 16:01:59,213 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-24 16:01:59,215 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-24 16:01:59,215 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-24 16:01:59,216 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-24 16:01:59,216 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-24 16:01:59,216 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-24 16:01:59,218 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-24 16:01:59,219 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-24 16:01:59,219 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-24 16:01:59,219 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-24 16:01:59,219 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-24 16:01:59,219 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-24 16:01:59,219 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-24 16:01:59,220 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-24 16:01:59,220 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-24 16:01:59,220 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-24 16:01:59,220 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-24 16:01:59,220 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-24 16:01:59,220 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-24 16:01:59,220 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-24 16:01:59,221 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-24 16:01:59,221 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-24 16:01:59,221 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-24 16:01:59,221 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-24 16:01:59,221 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-24 16:01:59,221 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-24 16:01:59,222 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-24 16:01:59,222 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-24 16:01:59,222 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-24 16:01:59,222 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-24 16:01:59,222 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-24 16:01:59,222 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-24 16:01:59,223 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-24 16:01:59,223 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-24 16:01:59,223 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-24 16:01:59,223 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 16:01:59,223 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-24 16:01:59,223 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-24 16:01:59,224 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 16:01:59,224 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-24 16:01:59,224 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-24 16:01:59,224 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-24 16:01:59,224 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-24 16:01:59,224 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-24 16:01:59,225 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 16:01:59,225 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-24 16:01:59,225 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-24 16:01:59,225 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-24 16:01:59,225 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 16:01:59,225 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-24 16:01:59,225 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-24 16:01:59,226 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-24 16:01:59,226 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-24 16:01:59,227 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-24 16:01:59,227 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-24 16:01:59,228 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-24 16:01:59,229 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-24 16:01:59,229 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-24 16:01:59,229 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-24 16:01:59,229 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-24 16:01:59,229 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-24 16:01:59,230 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-24 16:01:59,230 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-24 16:01:59,230 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-24 16:01:59,231 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-24 16:01:59,231 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-24 16:01:59,231 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-24 16:01:59,232 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-24 16:01:59,232 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-24 16:01:59,232 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-24 16:01:59,232 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-24 16:01:59,232 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-24 16:01:59,232 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-24 16:01:59,232 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-24 16:01:59,233 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-24 16:01:59,233 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-24 16:01:59,233 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-24 16:01:59,233 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-24 16:01:59,233 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-24 16:01:59,233 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-24 16:01:59,233 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-24 16:01:59,234 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-24 16:01:59,234 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-24 16:01:59,234 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-24 16:01:59,234 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-24 16:01:59,234 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-24 16:01:59,234 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-24 16:01:59,234 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-24 16:01:59,234 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 16:01:59,234 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 16:01:59,235 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 16:01:59,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 16:01:59,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 16:01:59,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 16:01:59,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 16:01:59,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 16:01:59,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 16:02:00,003 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 16:02:00,004 INFO L295 CfgBuilder]: Removed 30 assume(true) statements. [2020-09-24 16:02:00,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:02:00 BoogieIcfgContainer [2020-09-24 16:02:00,010 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 16:02:00,012 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 16:02:00,013 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 16:02:00,017 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 16:02:00,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 04:01:58" (1/3) ... [2020-09-24 16:02:00,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63e344b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:02:00, skipping insertion in model container [2020-09-24 16:02:00,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:59" (2/3) ... [2020-09-24 16:02:00,020 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63e344b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:02:00, skipping insertion in model container [2020-09-24 16:02:00,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:02:00" (3/3) ... [2020-09-24 16:02:00,023 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-01-2.i [2020-09-24 16:02:00,036 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 16:02:00,048 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2020-09-24 16:02:00,074 INFO L251 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2020-09-24 16:02:00,112 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 16:02:00,112 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 16:02:00,113 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 16:02:00,113 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 16:02:00,113 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 16:02:00,113 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 16:02:00,113 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 16:02:00,114 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 16:02:00,146 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states. [2020-09-24 16:02:00,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-24 16:02:00,154 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:02:00,155 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:02:00,156 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:02:00,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:02:00,164 INFO L82 PathProgramCache]: Analyzing trace with hash 885652866, now seen corresponding path program 1 times [2020-09-24 16:02:00,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:02:00,177 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1529344871] [2020-09-24 16:02:00,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:02:00,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:00,379 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:00,379 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:00,380 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:00,380 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:00,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-24 16:02:00,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:00,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 16:02:00,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:00,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 16:02:00,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 16:02:00,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 16:02:00,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:02:00,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:02:00,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:00,508 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:00,509 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:00,512 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:00,512 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:00,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:02:00,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:00,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 16:02:00,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:00,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:02:00,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:02:00,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:02:00,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:02:00,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:02:00,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1529344871] [2020-09-24 16:02:00,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:02:00,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 16:02:00,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832833977] [2020-09-24 16:02:00,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 16:02:00,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:02:00,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 16:02:00,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 16:02:00,577 INFO L87 Difference]: Start difference. First operand 171 states. Second operand 5 states. [2020-09-24 16:02:01,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:02:01,063 INFO L93 Difference]: Finished difference Result 360 states and 478 transitions. [2020-09-24 16:02:01,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 16:02:01,066 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-09-24 16:02:01,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:02:01,082 INFO L225 Difference]: With dead ends: 360 [2020-09-24 16:02:01,082 INFO L226 Difference]: Without dead ends: 194 [2020-09-24 16:02:01,088 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 [2020-09-24 16:02:01,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-09-24 16:02:01,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 164. [2020-09-24 16:02:01,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-09-24 16:02:01,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 174 transitions. [2020-09-24 16:02:01,156 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 174 transitions. Word has length 12 [2020-09-24 16:02:01,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:02:01,157 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 174 transitions. [2020-09-24 16:02:01,157 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 16:02:01,157 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 174 transitions. [2020-09-24 16:02:01,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-24 16:02:01,159 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:02:01,159 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] [2020-09-24 16:02:01,159 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 16:02:01,160 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:02:01,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:02:01,160 INFO L82 PathProgramCache]: Analyzing trace with hash 684663316, now seen corresponding path program 1 times [2020-09-24 16:02:01,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:02:01,161 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1314159619] [2020-09-24 16:02:01,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:02:01,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:01,196 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:01,196 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:01,196 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:01,197 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:01,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 16:02:01,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:01,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:02:01,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:01,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:02:01,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-24 16:02:01,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-24 16:02:01,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:02:01,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:02:01,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:01,248 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:01,248 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:01,250 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:01,251 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:01,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:02:01,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:01,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:02:01,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:01,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:02:01,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:02:01,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:02:01,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:02:01,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:02:01,273 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1314159619] [2020-09-24 16:02:01,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:02:01,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 16:02:01,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446093994] [2020-09-24 16:02:01,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 16:02:01,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:02:01,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 16:02:01,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 16:02:01,281 INFO L87 Difference]: Start difference. First operand 164 states and 174 transitions. Second operand 4 states. [2020-09-24 16:02:01,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:02:01,595 INFO L93 Difference]: Finished difference Result 170 states and 180 transitions. [2020-09-24 16:02:01,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 16:02:01,596 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-09-24 16:02:01,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:02:01,598 INFO L225 Difference]: With dead ends: 170 [2020-09-24 16:02:01,598 INFO L226 Difference]: Without dead ends: 165 [2020-09-24 16:02:01,599 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 [2020-09-24 16:02:01,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-09-24 16:02:01,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2020-09-24 16:02:01,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-09-24 16:02:01,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 175 transitions. [2020-09-24 16:02:01,616 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 175 transitions. Word has length 24 [2020-09-24 16:02:01,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:02:01,618 INFO L479 AbstractCegarLoop]: Abstraction has 165 states and 175 transitions. [2020-09-24 16:02:01,619 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 16:02:01,619 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 175 transitions. [2020-09-24 16:02:01,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-24 16:02:01,620 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:02:01,620 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] [2020-09-24 16:02:01,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 16:02:01,622 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:02:01,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:02:01,623 INFO L82 PathProgramCache]: Analyzing trace with hash -265499727, now seen corresponding path program 1 times [2020-09-24 16:02:01,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:02:01,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1395531499] [2020-09-24 16:02:01,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:02:01,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:01,721 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:01,721 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:01,721 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:01,722 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:01,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 16:02:01,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:01,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-24 16:02:01,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:01,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 16:02:01,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 16:02:01,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:02:01,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:02:01,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:02:01,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:01,850 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:01,850 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:01,850 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:01,851 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:01,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:02:01,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:01,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:02:01,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:01,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:02:01,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:02:01,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:02:01,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:02:01,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:02:01,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1395531499] [2020-09-24 16:02:01,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:02:01,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 16:02:01,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925551005] [2020-09-24 16:02:01,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 16:02:01,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:02:01,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 16:02:01,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-24 16:02:01,863 INFO L87 Difference]: Start difference. First operand 165 states and 175 transitions. Second operand 8 states. [2020-09-24 16:02:02,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:02:02,395 INFO L93 Difference]: Finished difference Result 258 states and 275 transitions. [2020-09-24 16:02:02,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 16:02:02,396 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2020-09-24 16:02:02,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:02:02,399 INFO L225 Difference]: With dead ends: 258 [2020-09-24 16:02:02,399 INFO L226 Difference]: Without dead ends: 253 [2020-09-24 16:02:02,400 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-09-24 16:02:02,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-09-24 16:02:02,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 159. [2020-09-24 16:02:02,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-09-24 16:02:02,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 169 transitions. [2020-09-24 16:02:02,414 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 169 transitions. Word has length 26 [2020-09-24 16:02:02,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:02:02,415 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 169 transitions. [2020-09-24 16:02:02,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 16:02:02,415 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 169 transitions. [2020-09-24 16:02:02,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-24 16:02:02,416 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:02:02,417 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] [2020-09-24 16:02:02,417 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 16:02:02,418 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:02:02,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:02:02,418 INFO L82 PathProgramCache]: Analyzing trace with hash 72562886, now seen corresponding path program 1 times [2020-09-24 16:02:02,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:02:02,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [649553787] [2020-09-24 16:02:02,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:02:02,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:02,486 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:02,486 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:02,486 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:02,488 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:02,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-24 16:02:02,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:02,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 16:02:02,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:02,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 16:02:02,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 16:02:02,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 16:02:02,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:02:02,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:02:02,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:02,576 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:02,576 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:02,576 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:02,577 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:02,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:02:02,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:02,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:02:02,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:02,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:02:02,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:02:02,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:02:02,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:02:02,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:02:02,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [649553787] [2020-09-24 16:02:02,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:02:02,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 16:02:02,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316125974] [2020-09-24 16:02:02,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 16:02:02,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:02:02,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 16:02:02,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 16:02:02,604 INFO L87 Difference]: Start difference. First operand 159 states and 169 transitions. Second operand 6 states. [2020-09-24 16:02:03,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:02:03,014 INFO L93 Difference]: Finished difference Result 382 states and 407 transitions. [2020-09-24 16:02:03,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 16:02:03,015 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2020-09-24 16:02:03,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:02:03,017 INFO L225 Difference]: With dead ends: 382 [2020-09-24 16:02:03,017 INFO L226 Difference]: Without dead ends: 253 [2020-09-24 16:02:03,018 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-24 16:02:03,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-09-24 16:02:03,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 162. [2020-09-24 16:02:03,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-09-24 16:02:03,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 172 transitions. [2020-09-24 16:02:03,028 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 172 transitions. Word has length 32 [2020-09-24 16:02:03,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:02:03,028 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 172 transitions. [2020-09-24 16:02:03,029 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 16:02:03,029 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 172 transitions. [2020-09-24 16:02:03,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 16:02:03,030 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:02:03,030 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] [2020-09-24 16:02:03,031 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 16:02:03,031 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:02:03,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:02:03,031 INFO L82 PathProgramCache]: Analyzing trace with hash 972027235, now seen corresponding path program 1 times [2020-09-24 16:02:03,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:02:03,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1493236239] [2020-09-24 16:02:03,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:02:03,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:03,065 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-24 16:02:03,066 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:03,066 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:03,066 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:03,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 16:02:03,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:03,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 16:02:03,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:03,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 16:02:03,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 16:02:03,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 16:02:03,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:02:03,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:02:03,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:03,145 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:03,145 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:03,145 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:03,145 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:03,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:02:03,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:03,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:02:03,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:03,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:02:03,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:02:03,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:02:03,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:02:03,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:02:03,156 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1493236239] [2020-09-24 16:02:03,156 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:02:03,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 16:02:03,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606948102] [2020-09-24 16:02:03,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 16:02:03,157 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:02:03,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 16:02:03,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 16:02:03,158 INFO L87 Difference]: Start difference. First operand 162 states and 172 transitions. Second operand 6 states. [2020-09-24 16:02:03,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:02:03,550 INFO L93 Difference]: Finished difference Result 271 states and 288 transitions. [2020-09-24 16:02:03,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 16:02:03,552 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2020-09-24 16:02:03,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:02:03,554 INFO L225 Difference]: With dead ends: 271 [2020-09-24 16:02:03,554 INFO L226 Difference]: Without dead ends: 239 [2020-09-24 16:02:03,555 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-24 16:02:03,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2020-09-24 16:02:03,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 161. [2020-09-24 16:02:03,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-09-24 16:02:03,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 171 transitions. [2020-09-24 16:02:03,572 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 171 transitions. Word has length 34 [2020-09-24 16:02:03,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:02:03,573 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 171 transitions. [2020-09-24 16:02:03,573 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 16:02:03,573 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 171 transitions. [2020-09-24 16:02:03,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-24 16:02:03,577 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:02:03,577 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] [2020-09-24 16:02:03,578 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 16:02:03,579 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:02:03,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:02:03,579 INFO L82 PathProgramCache]: Analyzing trace with hash -401575995, now seen corresponding path program 1 times [2020-09-24 16:02:03,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:02:03,580 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [546420007] [2020-09-24 16:02:03,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:02:03,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:03,645 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:03,645 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:03,646 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:03,646 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:03,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-24 16:02:03,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:03,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 16:02:03,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:03,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 16:02:03,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-09-24 16:02:03,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 16:02:03,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:02:03,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:02:03,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:03,742 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:03,745 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:03,745 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:03,745 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:03,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:02:03,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:03,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:02:03,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:03,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:02:03,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:02:03,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:02:03,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:02:03,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:02:03,758 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [546420007] [2020-09-24 16:02:03,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:02:03,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 16:02:03,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314200874] [2020-09-24 16:02:03,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 16:02:03,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:02:03,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 16:02:03,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 16:02:03,762 INFO L87 Difference]: Start difference. First operand 161 states and 171 transitions. Second operand 7 states. [2020-09-24 16:02:04,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:02:04,408 INFO L93 Difference]: Finished difference Result 245 states and 261 transitions. [2020-09-24 16:02:04,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 16:02:04,409 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-09-24 16:02:04,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:02:04,411 INFO L225 Difference]: With dead ends: 245 [2020-09-24 16:02:04,411 INFO L226 Difference]: Without dead ends: 241 [2020-09-24 16:02:04,411 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-24 16:02:04,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-09-24 16:02:04,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 157. [2020-09-24 16:02:04,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-09-24 16:02:04,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 167 transitions. [2020-09-24 16:02:04,419 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 167 transitions. Word has length 38 [2020-09-24 16:02:04,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:02:04,419 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 167 transitions. [2020-09-24 16:02:04,419 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 16:02:04,420 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 167 transitions. [2020-09-24 16:02:04,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-24 16:02:04,421 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:02:04,421 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:02:04,421 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 16:02:04,422 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:02:04,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:02:04,422 INFO L82 PathProgramCache]: Analyzing trace with hash 1938604912, now seen corresponding path program 1 times [2020-09-24 16:02:04,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:02:04,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1370831194] [2020-09-24 16:02:04,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:02:04,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:04,455 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:04,455 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:04,456 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:04,456 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:04,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-24 16:02:04,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:04,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 16:02:04,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:04,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:02:04,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-24 16:02:04,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:02:04,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:02:04,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:02:04,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:04,512 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:04,512 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:04,512 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:04,513 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:04,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:02:04,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:04,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:02:04,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:04,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:02:04,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:02:04,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:02:04,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:02:04,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:02:04,520 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1370831194] [2020-09-24 16:02:04,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:02:04,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 16:02:04,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318303626] [2020-09-24 16:02:04,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 16:02:04,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:02:04,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 16:02:04,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 16:02:04,523 INFO L87 Difference]: Start difference. First operand 157 states and 167 transitions. Second operand 4 states. [2020-09-24 16:02:04,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:02:04,747 INFO L93 Difference]: Finished difference Result 199 states and 213 transitions. [2020-09-24 16:02:04,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 16:02:04,747 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2020-09-24 16:02:04,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:02:04,749 INFO L225 Difference]: With dead ends: 199 [2020-09-24 16:02:04,749 INFO L226 Difference]: Without dead ends: 197 [2020-09-24 16:02:04,750 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 [2020-09-24 16:02:04,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-09-24 16:02:04,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 159. [2020-09-24 16:02:04,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-09-24 16:02:04,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 170 transitions. [2020-09-24 16:02:04,757 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 170 transitions. Word has length 42 [2020-09-24 16:02:04,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:02:04,758 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 170 transitions. [2020-09-24 16:02:04,758 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 16:02:04,758 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 170 transitions. [2020-09-24 16:02:04,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-24 16:02:04,759 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:02:04,759 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:02:04,760 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 16:02:04,760 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:02:04,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:02:04,760 INFO L82 PathProgramCache]: Analyzing trace with hash -1017153069, now seen corresponding path program 1 times [2020-09-24 16:02:04,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:02:04,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [120362376] [2020-09-24 16:02:04,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:02:04,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:04,778 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:04,779 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:04,779 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:04,779 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:04,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 16:02:04,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:04,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:02:04,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:04,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:02:04,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-24 16:02:04,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 16:02:04,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:02:04,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:02:04,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:04,817 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:04,818 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:04,818 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:04,818 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:04,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:02:04,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:04,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:02:04,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:04,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:02:04,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:02:04,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:02:04,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:02:04,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:02:04,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [120362376] [2020-09-24 16:02:04,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:02:04,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 16:02:04,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252170089] [2020-09-24 16:02:04,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 16:02:04,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:02:04,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 16:02:04,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 16:02:04,828 INFO L87 Difference]: Start difference. First operand 159 states and 170 transitions. Second operand 4 states. [2020-09-24 16:02:05,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:02:05,113 INFO L93 Difference]: Finished difference Result 159 states and 170 transitions. [2020-09-24 16:02:05,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 16:02:05,114 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2020-09-24 16:02:05,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:02:05,115 INFO L225 Difference]: With dead ends: 159 [2020-09-24 16:02:05,115 INFO L226 Difference]: Without dead ends: 157 [2020-09-24 16:02:05,116 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 [2020-09-24 16:02:05,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-09-24 16:02:05,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2020-09-24 16:02:05,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-09-24 16:02:05,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 168 transitions. [2020-09-24 16:02:05,124 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 168 transitions. Word has length 44 [2020-09-24 16:02:05,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:02:05,124 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 168 transitions. [2020-09-24 16:02:05,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 16:02:05,125 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 168 transitions. [2020-09-24 16:02:05,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-24 16:02:05,128 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:02:05,129 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:02:05,129 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 16:02:05,130 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:02:05,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:02:05,130 INFO L82 PathProgramCache]: Analyzing trace with hash -1203451366, now seen corresponding path program 1 times [2020-09-24 16:02:05,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:02:05,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [130831047] [2020-09-24 16:02:05,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:02:05,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:05,181 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-24 16:02:05,182 FATAL L256 erpolLogProxyWrapper]: Difference in depth: -9 [2020-09-24 16:02:05,182 FATAL L256 erpolLogProxyWrapper]: Difference in width: 9 [2020-09-24 16:02:05,182 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:05,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 16:02:05,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:05,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 16:02:05,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:05,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 16:02:05,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 16:02:05,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 16:02:05,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:02:05,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:02:05,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:05,327 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:05,327 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:05,327 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:05,327 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:05,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:02:05,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:05,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:02:05,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:05,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:02:05,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:02:05,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:02:05,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:02:05,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:02:05,343 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [130831047] [2020-09-24 16:02:05,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:02:05,344 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 16:02:05,344 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833728778] [2020-09-24 16:02:05,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 16:02:05,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:02:05,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 16:02:05,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 16:02:05,345 INFO L87 Difference]: Start difference. First operand 157 states and 168 transitions. Second operand 9 states. [2020-09-24 16:02:06,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:02:06,027 INFO L93 Difference]: Finished difference Result 352 states and 379 transitions. [2020-09-24 16:02:06,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 16:02:06,028 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 48 [2020-09-24 16:02:06,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:02:06,031 INFO L225 Difference]: With dead ends: 352 [2020-09-24 16:02:06,031 INFO L226 Difference]: Without dead ends: 281 [2020-09-24 16:02:06,032 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2020-09-24 16:02:06,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2020-09-24 16:02:06,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 176. [2020-09-24 16:02:06,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-09-24 16:02:06,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 188 transitions. [2020-09-24 16:02:06,044 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 188 transitions. Word has length 48 [2020-09-24 16:02:06,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:02:06,044 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 188 transitions. [2020-09-24 16:02:06,044 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 16:02:06,044 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 188 transitions. [2020-09-24 16:02:06,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 16:02:06,046 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:02:06,046 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:02:06,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 16:02:06,046 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:02:06,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:02:06,047 INFO L82 PathProgramCache]: Analyzing trace with hash 2069783995, now seen corresponding path program 1 times [2020-09-24 16:02:06,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:02:06,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [58625756] [2020-09-24 16:02:06,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:02:06,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:06,079 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:06,080 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:06,080 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:06,080 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:06,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-24 16:02:06,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:06,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:02:06,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:06,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:02:06,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-24 16:02:06,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-24 16:02:06,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:02:06,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:02:06,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:06,124 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:06,124 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:06,125 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:06,125 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:06,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:02:06,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:06,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:02:06,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:06,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:02:06,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:02:06,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:02:06,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:02:06,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:02:06,132 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [58625756] [2020-09-24 16:02:06,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:02:06,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 16:02:06,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821650864] [2020-09-24 16:02:06,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 16:02:06,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:02:06,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 16:02:06,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 16:02:06,135 INFO L87 Difference]: Start difference. First operand 176 states and 188 transitions. Second operand 4 states. [2020-09-24 16:02:06,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:02:06,378 INFO L93 Difference]: Finished difference Result 182 states and 194 transitions. [2020-09-24 16:02:06,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 16:02:06,379 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-09-24 16:02:06,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:02:06,380 INFO L225 Difference]: With dead ends: 182 [2020-09-24 16:02:06,380 INFO L226 Difference]: Without dead ends: 177 [2020-09-24 16:02:06,381 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 [2020-09-24 16:02:06,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-09-24 16:02:06,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2020-09-24 16:02:06,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-09-24 16:02:06,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 189 transitions. [2020-09-24 16:02:06,389 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 189 transitions. Word has length 52 [2020-09-24 16:02:06,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:02:06,391 INFO L479 AbstractCegarLoop]: Abstraction has 177 states and 189 transitions. [2020-09-24 16:02:06,391 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 16:02:06,391 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 189 transitions. [2020-09-24 16:02:06,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-24 16:02:06,392 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:02:06,392 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:02:06,392 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 16:02:06,393 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:02:06,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:02:06,393 INFO L82 PathProgramCache]: Analyzing trace with hash -1565892499, now seen corresponding path program 1 times [2020-09-24 16:02:06,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:02:06,394 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1007257286] [2020-09-24 16:02:06,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:02:06,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:06,681 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-24 16:02:06,681 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:06,681 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:06,682 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:06,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-24 16:02:06,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:06,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-09-24 16:02:06,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:06,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 16:02:06,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 16:02:06,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-24 16:02:06,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:02:06,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:02:06,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:06,938 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:06,938 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:06,938 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:06,939 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:06,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:02:06,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:06,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:02:06,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:06,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:02:06,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:02:06,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:02:06,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:02:06,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:02:06,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1007257286] [2020-09-24 16:02:06,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:02:06,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-24 16:02:06,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408724967] [2020-09-24 16:02:06,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 16:02:06,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:02:06,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 16:02:06,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-09-24 16:02:06,960 INFO L87 Difference]: Start difference. First operand 177 states and 189 transitions. Second operand 14 states. [2020-09-24 16:02:08,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:02:08,971 INFO L93 Difference]: Finished difference Result 645 states and 689 transitions. [2020-09-24 16:02:08,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-24 16:02:08,972 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 53 [2020-09-24 16:02:08,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:02:08,977 INFO L225 Difference]: With dead ends: 645 [2020-09-24 16:02:08,977 INFO L226 Difference]: Without dead ends: 642 [2020-09-24 16:02:08,979 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=288, Invalid=834, Unknown=0, NotChecked=0, Total=1122 [2020-09-24 16:02:08,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2020-09-24 16:02:08,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 197. [2020-09-24 16:02:08,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-09-24 16:02:08,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 212 transitions. [2020-09-24 16:02:08,993 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 212 transitions. Word has length 53 [2020-09-24 16:02:08,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:02:08,994 INFO L479 AbstractCegarLoop]: Abstraction has 197 states and 212 transitions. [2020-09-24 16:02:08,994 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 16:02:08,994 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 212 transitions. [2020-09-24 16:02:08,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-24 16:02:08,995 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:02:08,995 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:02:08,995 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 16:02:08,995 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:02:08,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:02:08,996 INFO L82 PathProgramCache]: Analyzing trace with hash 991929043, now seen corresponding path program 1 times [2020-09-24 16:02:08,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:02:08,997 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2078379537] [2020-09-24 16:02:08,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:02:09,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:09,019 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:09,020 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:09,020 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:09,021 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:09,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-24 16:02:09,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:09,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 16:02:09,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:09,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 16:02:09,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 16:02:09,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 16:02:09,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:02:09,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:02:09,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:09,144 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:09,144 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:09,144 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:09,145 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:09,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:02:09,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:09,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:02:09,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:09,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:02:09,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:02:09,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:02:09,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 17 [2020-09-24 16:02:09,172 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 16:02:09,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2078379537] [2020-09-24 16:02:09,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:02:09,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 16:02:09,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782910037] [2020-09-24 16:02:09,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 16:02:09,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:02:09,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 16:02:09,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 16:02:09,174 INFO L87 Difference]: Start difference. First operand 197 states and 212 transitions. Second operand 8 states. [2020-09-24 16:02:09,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:02:09,662 INFO L93 Difference]: Finished difference Result 284 states and 306 transitions. [2020-09-24 16:02:09,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 16:02:09,662 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 53 [2020-09-24 16:02:09,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:02:09,664 INFO L225 Difference]: With dead ends: 284 [2020-09-24 16:02:09,664 INFO L226 Difference]: Without dead ends: 254 [2020-09-24 16:02:09,665 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-09-24 16:02:09,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-09-24 16:02:09,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 235. [2020-09-24 16:02:09,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-09-24 16:02:09,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 258 transitions. [2020-09-24 16:02:09,682 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 258 transitions. Word has length 53 [2020-09-24 16:02:09,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:02:09,682 INFO L479 AbstractCegarLoop]: Abstraction has 235 states and 258 transitions. [2020-09-24 16:02:09,683 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 16:02:09,683 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 258 transitions. [2020-09-24 16:02:09,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-24 16:02:09,683 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:02:09,684 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:02:09,684 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-24 16:02:09,684 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:02:09,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:02:09,685 INFO L82 PathProgramCache]: Analyzing trace with hash -604385608, now seen corresponding path program 1 times [2020-09-24 16:02:09,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:02:09,685 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2037855315] [2020-09-24 16:02:09,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:02:09,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:09,726 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:09,726 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:09,726 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:09,727 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:09,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 16:02:09,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:09,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 16:02:09,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:09,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 16:02:09,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-24 16:02:09,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:02:09,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:02:09,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:02:09,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:09,808 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:09,809 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:09,809 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:09,809 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:09,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:02:09,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:09,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:02:09,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:09,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:02:09,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:02:09,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:02:09,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:02:09,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:02:09,818 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2037855315] [2020-09-24 16:02:09,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:02:09,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 16:02:09,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850298910] [2020-09-24 16:02:09,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 16:02:09,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:02:09,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 16:02:09,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-24 16:02:09,820 INFO L87 Difference]: Start difference. First operand 235 states and 258 transitions. Second operand 8 states. [2020-09-24 16:02:10,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:02:10,272 INFO L93 Difference]: Finished difference Result 254 states and 279 transitions. [2020-09-24 16:02:10,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 16:02:10,273 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 54 [2020-09-24 16:02:10,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:02:10,274 INFO L225 Difference]: With dead ends: 254 [2020-09-24 16:02:10,274 INFO L226 Difference]: Without dead ends: 249 [2020-09-24 16:02:10,275 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-09-24 16:02:10,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2020-09-24 16:02:10,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 229. [2020-09-24 16:02:10,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-09-24 16:02:10,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 252 transitions. [2020-09-24 16:02:10,287 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 252 transitions. Word has length 54 [2020-09-24 16:02:10,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:02:10,287 INFO L479 AbstractCegarLoop]: Abstraction has 229 states and 252 transitions. [2020-09-24 16:02:10,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 16:02:10,287 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 252 transitions. [2020-09-24 16:02:10,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-24 16:02:10,288 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:02:10,289 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:02:10,289 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-24 16:02:10,289 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:02:10,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:02:10,289 INFO L82 PathProgramCache]: Analyzing trace with hash -1636675303, now seen corresponding path program 1 times [2020-09-24 16:02:10,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:02:10,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [213841285] [2020-09-24 16:02:10,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:02:10,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:10,413 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:10,414 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:10,414 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:10,414 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:10,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-24 16:02:10,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:10,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-09-24 16:02:10,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:10,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 16:02:10,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 16:02:10,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-24 16:02:10,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:02:10,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:02:10,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:10,780 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:10,780 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:10,780 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:10,781 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:10,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:02:10,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:10,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:02:10,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:10,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:02:10,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:02:10,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:02:10,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:02:10,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:02:10,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [213841285] [2020-09-24 16:02:10,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:02:10,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-09-24 16:02:10,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896846266] [2020-09-24 16:02:10,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 16:02:10,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:02:10,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 16:02:10,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-09-24 16:02:10,803 INFO L87 Difference]: Start difference. First operand 229 states and 252 transitions. Second operand 15 states. [2020-09-24 16:02:12,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:02:12,794 INFO L93 Difference]: Finished difference Result 642 states and 697 transitions. [2020-09-24 16:02:12,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-24 16:02:12,795 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 57 [2020-09-24 16:02:12,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:02:12,798 INFO L225 Difference]: With dead ends: 642 [2020-09-24 16:02:12,799 INFO L226 Difference]: Without dead ends: 639 [2020-09-24 16:02:12,801 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=271, Invalid=851, Unknown=0, NotChecked=0, Total=1122 [2020-09-24 16:02:12,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2020-09-24 16:02:12,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 233. [2020-09-24 16:02:12,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-09-24 16:02:12,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 256 transitions. [2020-09-24 16:02:12,817 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 256 transitions. Word has length 57 [2020-09-24 16:02:12,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:02:12,818 INFO L479 AbstractCegarLoop]: Abstraction has 233 states and 256 transitions. [2020-09-24 16:02:12,818 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-24 16:02:12,818 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 256 transitions. [2020-09-24 16:02:12,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-24 16:02:12,819 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:02:12,819 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:02:12,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-24 16:02:12,820 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:02:12,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:02:12,820 INFO L82 PathProgramCache]: Analyzing trace with hash -1939208096, now seen corresponding path program 1 times [2020-09-24 16:02:12,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:02:12,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1857090683] [2020-09-24 16:02:12,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:02:12,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:12,842 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:12,842 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:12,842 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:12,843 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:12,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 16:02:12,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:12,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 16:02:12,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:12,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:02:12,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-09-24 16:02:12,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-24 16:02:12,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:02:12,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:02:12,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:12,884 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:12,884 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:12,884 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:12,884 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:12,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:02:12,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:12,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:02:12,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:12,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:02:12,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:02:12,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:02:12,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:02:12,891 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 16:02:12,892 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1857090683] [2020-09-24 16:02:12,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:02:12,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 16:02:12,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404713153] [2020-09-24 16:02:12,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 16:02:12,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:02:12,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 16:02:12,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 16:02:12,894 INFO L87 Difference]: Start difference. First operand 233 states and 256 transitions. Second operand 4 states. [2020-09-24 16:02:13,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:02:13,123 INFO L93 Difference]: Finished difference Result 238 states and 261 transitions. [2020-09-24 16:02:13,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 16:02:13,124 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2020-09-24 16:02:13,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:02:13,126 INFO L225 Difference]: With dead ends: 238 [2020-09-24 16:02:13,126 INFO L226 Difference]: Without dead ends: 236 [2020-09-24 16:02:13,126 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 [2020-09-24 16:02:13,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2020-09-24 16:02:13,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 231. [2020-09-24 16:02:13,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2020-09-24 16:02:13,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 254 transitions. [2020-09-24 16:02:13,142 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 254 transitions. Word has length 58 [2020-09-24 16:02:13,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:02:13,142 INFO L479 AbstractCegarLoop]: Abstraction has 231 states and 254 transitions. [2020-09-24 16:02:13,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 16:02:13,142 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 254 transitions. [2020-09-24 16:02:13,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-24 16:02:13,143 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:02:13,143 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 16:02:13,144 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-24 16:02:13,144 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:02:13,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:02:13,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1792411396, now seen corresponding path program 1 times [2020-09-24 16:02:13,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:02:13,145 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1185197041] [2020-09-24 16:02:13,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:02:13,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:13,172 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:13,172 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:13,172 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:13,172 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:13,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-24 16:02:13,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:13,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 16:02:13,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:13,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 16:02:13,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 16:02:13,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-24 16:02:13,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:02:13,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:02:13,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:13,257 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:13,258 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:13,258 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:13,258 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:13,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:02:13,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:13,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:02:13,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:13,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:02:13,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:02:13,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:02:13,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:02:13,274 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:02:13,275 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1185197041] [2020-09-24 16:02:13,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:02:13,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 16:02:13,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087117045] [2020-09-24 16:02:13,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 16:02:13,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:02:13,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 16:02:13,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 16:02:13,279 INFO L87 Difference]: Start difference. First operand 231 states and 254 transitions. Second operand 7 states. [2020-09-24 16:02:13,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:02:13,761 INFO L93 Difference]: Finished difference Result 381 states and 416 transitions. [2020-09-24 16:02:13,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 16:02:13,762 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 59 [2020-09-24 16:02:13,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:02:13,764 INFO L225 Difference]: With dead ends: 381 [2020-09-24 16:02:13,764 INFO L226 Difference]: Without dead ends: 274 [2020-09-24 16:02:13,765 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-09-24 16:02:13,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2020-09-24 16:02:13,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 232. [2020-09-24 16:02:13,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-09-24 16:02:13,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 253 transitions. [2020-09-24 16:02:13,776 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 253 transitions. Word has length 59 [2020-09-24 16:02:13,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:02:13,777 INFO L479 AbstractCegarLoop]: Abstraction has 232 states and 253 transitions. [2020-09-24 16:02:13,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 16:02:13,777 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 253 transitions. [2020-09-24 16:02:13,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-24 16:02:13,778 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:02:13,778 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:02:13,778 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-24 16:02:13,778 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:02:13,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:02:13,779 INFO L82 PathProgramCache]: Analyzing trace with hash -984681049, now seen corresponding path program 1 times [2020-09-24 16:02:13,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:02:13,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [823291033] [2020-09-24 16:02:13,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:02:13,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:13,917 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:13,917 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:13,917 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:13,918 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:13,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 16:02:13,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:13,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-09-24 16:02:13,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:13,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 16:02:13,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 16:02:13,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 16:02:13,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:02:14,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:02:14,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:14,076 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:14,077 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:14,077 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:14,077 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:14,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:02:14,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:14,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:02:14,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:14,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:02:14,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:02:14,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:02:14,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:02:14,111 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:02:14,111 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [823291033] [2020-09-24 16:02:14,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:02:14,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-24 16:02:14,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505176727] [2020-09-24 16:02:14,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 16:02:14,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:02:14,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 16:02:14,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-09-24 16:02:14,115 INFO L87 Difference]: Start difference. First operand 232 states and 253 transitions. Second operand 13 states. [2020-09-24 16:02:15,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:02:15,401 INFO L93 Difference]: Finished difference Result 487 states and 518 transitions. [2020-09-24 16:02:15,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 16:02:15,402 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 62 [2020-09-24 16:02:15,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:02:15,405 INFO L225 Difference]: With dead ends: 487 [2020-09-24 16:02:15,406 INFO L226 Difference]: Without dead ends: 431 [2020-09-24 16:02:15,407 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2020-09-24 16:02:15,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2020-09-24 16:02:15,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 241. [2020-09-24 16:02:15,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-09-24 16:02:15,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 261 transitions. [2020-09-24 16:02:15,422 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 261 transitions. Word has length 62 [2020-09-24 16:02:15,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:02:15,423 INFO L479 AbstractCegarLoop]: Abstraction has 241 states and 261 transitions. [2020-09-24 16:02:15,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 16:02:15,423 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 261 transitions. [2020-09-24 16:02:15,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-24 16:02:15,425 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:02:15,425 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:02:15,425 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-24 16:02:15,426 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:02:15,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:02:15,426 INFO L82 PathProgramCache]: Analyzing trace with hash -649286859, now seen corresponding path program 1 times [2020-09-24 16:02:15,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:02:15,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [356269698] [2020-09-24 16:02:15,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:02:15,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:15,448 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:15,449 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:15,449 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:15,449 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:15,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 16:02:15,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:15,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:02:15,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:15,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:02:15,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-24 16:02:15,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 16:02:15,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:02:15,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:02:15,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:15,492 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:15,492 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:15,492 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:15,493 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:15,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:02:15,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:15,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:02:15,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:15,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:02:15,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:02:15,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:02:15,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:02:15,503 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:02:15,504 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [356269698] [2020-09-24 16:02:15,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:02:15,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 16:02:15,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943293764] [2020-09-24 16:02:15,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 16:02:15,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:02:15,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 16:02:15,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 16:02:15,516 INFO L87 Difference]: Start difference. First operand 241 states and 261 transitions. Second operand 4 states. [2020-09-24 16:02:15,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:02:15,846 INFO L93 Difference]: Finished difference Result 426 states and 470 transitions. [2020-09-24 16:02:15,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 16:02:15,846 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 64 [2020-09-24 16:02:15,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:02:15,848 INFO L225 Difference]: With dead ends: 426 [2020-09-24 16:02:15,849 INFO L226 Difference]: Without dead ends: 330 [2020-09-24 16:02:15,850 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 [2020-09-24 16:02:15,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2020-09-24 16:02:15,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 282. [2020-09-24 16:02:15,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2020-09-24 16:02:15,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 308 transitions. [2020-09-24 16:02:15,863 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 308 transitions. Word has length 64 [2020-09-24 16:02:15,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:02:15,863 INFO L479 AbstractCegarLoop]: Abstraction has 282 states and 308 transitions. [2020-09-24 16:02:15,864 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 16:02:15,864 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 308 transitions. [2020-09-24 16:02:15,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-24 16:02:15,865 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:02:15,865 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:02:15,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-24 16:02:15,865 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:02:15,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:02:15,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1878952235, now seen corresponding path program 1 times [2020-09-24 16:02:15,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:02:15,867 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2042811060] [2020-09-24 16:02:15,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:02:15,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:15,884 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:15,884 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:15,885 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:15,885 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:15,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 16:02:15,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:15,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:02:15,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:15,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:02:15,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-24 16:02:15,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:02:15,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:02:15,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:02:15,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:15,915 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:15,916 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:15,916 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:15,916 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:15,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:02:15,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:15,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:02:15,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:15,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:02:15,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:02:15,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:02:15,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:02:15,923 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:02:15,923 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2042811060] [2020-09-24 16:02:15,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:02:15,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 16:02:15,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336167710] [2020-09-24 16:02:15,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 16:02:15,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:02:15,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 16:02:15,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 16:02:15,926 INFO L87 Difference]: Start difference. First operand 282 states and 308 transitions. Second operand 4 states. [2020-09-24 16:02:16,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:02:16,182 INFO L93 Difference]: Finished difference Result 447 states and 494 transitions. [2020-09-24 16:02:16,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 16:02:16,183 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 64 [2020-09-24 16:02:16,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:02:16,185 INFO L225 Difference]: With dead ends: 447 [2020-09-24 16:02:16,185 INFO L226 Difference]: Without dead ends: 309 [2020-09-24 16:02:16,186 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 [2020-09-24 16:02:16,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2020-09-24 16:02:16,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 274. [2020-09-24 16:02:16,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-09-24 16:02:16,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 299 transitions. [2020-09-24 16:02:16,201 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 299 transitions. Word has length 64 [2020-09-24 16:02:16,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:02:16,201 INFO L479 AbstractCegarLoop]: Abstraction has 274 states and 299 transitions. [2020-09-24 16:02:16,201 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 16:02:16,201 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 299 transitions. [2020-09-24 16:02:16,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-24 16:02:16,202 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:02:16,202 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:02:16,203 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-24 16:02:16,204 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:02:16,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:02:16,205 INFO L82 PathProgramCache]: Analyzing trace with hash -201437452, now seen corresponding path program 1 times [2020-09-24 16:02:16,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:02:16,205 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [857270628] [2020-09-24 16:02:16,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:02:16,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:16,243 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:16,243 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:16,244 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:16,244 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:16,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-24 16:02:16,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:16,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 16:02:16,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:16,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 16:02:16,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-24 16:02:16,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 16:02:16,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:02:16,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:02:16,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:02:16,431 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:02:16,431 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:02:16,431 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:02:16,431 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:02:16,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:02:16,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:02:16,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:02:16,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:02:16,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:02:16,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:02:16,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:02:16,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:02:16,443 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:02:16,443 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [857270628] [2020-09-24 16:02:16,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:02:16,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 16:02:16,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107029018] [2020-09-24 16:02:16,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 16:02:16,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:02:16,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 16:02:16,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-09-24 16:02:16,445 INFO L87 Difference]: Start difference. First operand 274 states and 299 transitions. Second operand 10 states. [2020-09-24 16:02:17,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:02:17,414 INFO L93 Difference]: Finished difference Result 461 states and 500 transitions. [2020-09-24 16:02:17,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 16:02:17,414 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 67 [2020-09-24 16:02:17,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:02:17,416 INFO L225 Difference]: With dead ends: 461 [2020-09-24 16:02:17,417 INFO L226 Difference]: Without dead ends: 401 [2020-09-24 16:02:17,417 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2020-09-24 16:02:17,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2020-09-24 16:02:17,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 305. [2020-09-24 16:02:17,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2020-09-24 16:02:17,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 341 transitions. [2020-09-24 16:02:17,433 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 341 transitions. Word has length 67 [2020-09-24 16:02:17,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:02:17,433 INFO L479 AbstractCegarLoop]: Abstraction has 305 states and 341 transitions. [2020-09-24 16:02:17,433 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 16:02:17,433 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 341 transitions. [2020-09-24 16:02:17,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-24 16:02:17,434 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:02:17,435 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:02:17,435 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-24 16:02:17,435 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:02:17,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:02:17,435 INFO L82 PathProgramCache]: Analyzing trace with hash 364568229, now seen corresponding path program 1 times [2020-09-24 16:02:17,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:02:17,436 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1520817608] [2020-09-24 16:02:17,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:02:17,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 16:02:17,460 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 16:02:17,460 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 16:02:17,470 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-09-24 16:02:17,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 04:02:17 BoogieIcfgContainer [2020-09-24 16:02:17,508 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 16:02:17,517 INFO L168 Benchmark]: Toolchain (without parser) took 19225.83 ms. Allocated memory was 148.4 MB in the beginning and 406.3 MB in the end (delta: 257.9 MB). Free memory was 103.6 MB in the beginning and 177.3 MB in the end (delta: -73.6 MB). Peak memory consumption was 184.3 MB. Max. memory is 7.1 GB. [2020-09-24 16:02:17,518 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 148.4 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 16:02:17,522 INFO L168 Benchmark]: CACSL2BoogieTranslator took 744.19 ms. Allocated memory was 148.4 MB in the beginning and 205.5 MB in the end (delta: 57.1 MB). Free memory was 102.9 MB in the beginning and 171.7 MB in the end (delta: -68.8 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2020-09-24 16:02:17,523 INFO L168 Benchmark]: Boogie Preprocessor took 97.81 ms. Allocated memory is still 205.5 MB. Free memory was 171.7 MB in the beginning and 168.3 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. [2020-09-24 16:02:17,523 INFO L168 Benchmark]: RCFGBuilder took 877.55 ms. Allocated memory is still 205.5 MB. Free memory was 168.3 MB in the beginning and 105.8 MB in the end (delta: 62.5 MB). Peak memory consumption was 62.5 MB. Max. memory is 7.1 GB. [2020-09-24 16:02:17,524 INFO L168 Benchmark]: TraceAbstraction took 17495.45 ms. Allocated memory was 205.5 MB in the beginning and 406.3 MB in the end (delta: 200.8 MB). Free memory was 105.2 MB in the beginning and 177.3 MB in the end (delta: -72.1 MB). Peak memory consumption was 128.7 MB. Max. memory is 7.1 GB. [2020-09-24 16:02:17,530 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 148.4 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 744.19 ms. Allocated memory was 148.4 MB in the beginning and 205.5 MB in the end (delta: 57.1 MB). Free memory was 102.9 MB in the beginning and 171.7 MB in the end (delta: -68.8 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 97.81 ms. Allocated memory is still 205.5 MB. Free memory was 171.7 MB in the beginning and 168.3 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 877.55 ms. Allocated memory is still 205.5 MB. Free memory was 168.3 MB in the beginning and 105.8 MB in the end (delta: 62.5 MB). Peak memory consumption was 62.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 17495.45 ms. Allocated memory was 205.5 MB in the beginning and 406.3 MB in the end (delta: 200.8 MB). Free memory was 105.2 MB in the beginning and 177.3 MB in the end (delta: -72.1 MB). Peak memory consumption was 128.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1025]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L991] SLL* list = malloc(sizeof(SLL)); [L992] list->next = ((void*)0) [L993] COND FALSE !(!(list != ((void*)0))) [L993] COND FALSE !(__VERIFIER_nondet_int()) [L993] list->inner = malloc(sizeof(SLL)) [L993] EXPR list->inner [L993] list->inner->next = ((void*)0) [L993] EXPR list->inner [L993] list->inner->inner = ((void*)0) [L993] EXPR list->inner [L993] EXPR list->inner != ((void*)0) || list->inner == ((void*)0) [L993] COND FALSE !(!(list->inner != ((void*)0) || list->inner == ((void*)0))) [L995] SLL* end = list; [L998] COND FALSE !(__VERIFIER_nondet_int()) [L1008] end = ((void*)0) [L1009] end = list [L1012] COND FALSE !(!(((void*)0) != end)) [L1014] COND TRUE ((void*)0) != end [L1016] int len = 0; [L1017] EXPR end->inner [L1017] SLL* inner = end->inner; [L1018] COND TRUE ((void*)0) != inner [L1020] COND TRUE len == 0 [L1021] len = 1 [L1024] COND FALSE !(!(((void*)0) != inner)) [L1025] EXPR inner->inner [L1025] COND FALSE !(!(((void*)0) == inner->inner)) [L1026] EXPR inner->next [L1026] COND FALSE !(!(((void*)0) == inner->next)) [L1027] EXPR inner->inner [L1027] inner = inner->inner [L1028] COND TRUE len == 1 [L1029] EXPR inner->inner [L1029] inner = inner->inner [L1018] COND TRUE ((void*)0) != inner [L1020] COND FALSE !(len == 0) [L1023] len = 2 [L1024] COND FALSE !(!(((void*)0) != inner)) [L1025] EXPR inner->inner [L1025] COND TRUE !(((void*)0) == inner->inner) [L1025] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 171 locations, 13 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 17.3s, OverallIterations: 21, TraceHistogramMax: 2, AutomataDifference: 12.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3372 SDtfs, 5819 SDslu, 10839 SDs, 0 SdLazy, 7244 SolverSat, 238 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 265 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 4.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=305occurred in iteration=20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 20 MinimizatonAttempts, 1826 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 1016 NumberOfCodeBlocks, 1016 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 923 ConstructedInterpolants, 0 QuantifiedInterpolants, 332594 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 20 InterpolantComputations, 18 PerfectInterpolantSequences, 14/17 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...