/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --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/dll-rb-sentinel-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:35:38,033 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:35:38,038 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:35:38,082 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:35:38,082 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:35:38,093 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:35:38,096 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:35:38,098 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:35:38,101 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:35:38,102 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:35:38,103 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:35:38,104 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:35:38,105 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:35:38,109 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:35:38,112 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:35:38,115 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:35:38,116 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:35:38,118 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:35:38,120 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:35:38,125 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:35:38,128 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:35:38,130 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:35:38,131 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:35:38,132 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:35:38,137 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:35:38,137 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:35:38,137 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:35:38,140 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:35:38,141 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:35:38,143 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:35:38,143 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:35:38,144 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:35:38,145 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:35:38,145 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:35:38,146 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:35:38,147 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:35:38,147 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:35:38,148 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:35:38,148 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:35:38,149 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:35:38,150 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:35:38,152 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 14:35:38,199 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:35:38,199 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:35:38,201 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:35:38,201 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:35:38,201 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:35:38,202 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:35:38,202 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:35:38,202 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:35:38,202 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:35:38,203 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:35:38,204 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:35:38,204 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:35:38,204 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:35:38,205 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:35:38,205 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:35:38,205 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:35:38,205 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:35:38,205 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:35:38,205 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:35:38,206 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:35:38,206 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:35:38,206 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:35:38,206 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:35:38,206 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:35:38,207 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:35:38,207 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:35:38,207 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:35:38,207 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:35:38,207 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:35:38,208 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-09-25 14:35:38,646 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:35:38,672 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:35:38,677 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:35:38,678 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:35:38,681 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:35:38,683 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-rb-sentinel-1.i [2020-09-25 14:35:38,773 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dad479897/88ca9ee8947f453e9a49057b5d4d8f21/FLAG08f0114bb [2020-09-25 14:35:39,442 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:35:39,443 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/dll-rb-sentinel-1.i [2020-09-25 14:35:39,464 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dad479897/88ca9ee8947f453e9a49057b5d4d8f21/FLAG08f0114bb [2020-09-25 14:35:39,639 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dad479897/88ca9ee8947f453e9a49057b5d4d8f21 [2020-09-25 14:35:39,651 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:35:39,656 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:35:39,659 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:35:39,660 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:35:39,663 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:35:39,664 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:35:39" (1/1) ... [2020-09-25 14:35:39,668 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52c2ae25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:35:39, skipping insertion in model container [2020-09-25 14:35:39,668 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:35:39" (1/1) ... [2020-09-25 14:35:39,675 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:35:39,722 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:35:40,189 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:35:40,201 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:35:40,251 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:35:40,304 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:35:40,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:35:40 WrapperNode [2020-09-25 14:35:40,308 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:35:40,309 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:35:40,309 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:35:40,309 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:35:40,327 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:35:40" (1/1) ... [2020-09-25 14:35:40,327 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:35:40" (1/1) ... [2020-09-25 14:35:40,345 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:35:40" (1/1) ... [2020-09-25 14:35:40,346 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:35:40" (1/1) ... [2020-09-25 14:35:40,370 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:35:40" (1/1) ... [2020-09-25 14:35:40,388 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:35:40" (1/1) ... [2020-09-25 14:35:40,392 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:35:40" (1/1) ... [2020-09-25 14:35:40,407 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:35:40,408 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:35:40,408 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:35:40,408 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:35:40,410 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:35:40" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:35:40,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:35:40,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:35:40,486 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:35:40,486 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 14:35:40,487 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 14:35:40,487 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 14:35:40,487 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 14:35:40,488 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 14:35:40,488 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 14:35:40,489 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 14:35:40,489 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 14:35:40,489 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 14:35:40,489 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 14:35:40,489 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 14:35:40,490 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 14:35:40,491 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 14:35:40,491 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 14:35:40,491 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 14:35:40,491 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 14:35:40,491 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 14:35:40,492 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 14:35:40,492 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 14:35:40,492 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 14:35:40,492 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 14:35:40,493 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 14:35:40,493 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 14:35:40,493 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 14:35:40,494 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 14:35:40,494 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 14:35:40,494 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 14:35:40,494 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 14:35:40,494 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 14:35:40,494 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 14:35:40,495 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 14:35:40,495 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 14:35:40,495 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 14:35:40,495 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 14:35:40,495 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 14:35:40,495 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 14:35:40,496 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 14:35:40,496 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 14:35:40,496 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 14:35:40,496 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 14:35:40,496 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 14:35:40,496 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 14:35:40,497 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 14:35:40,497 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 14:35:40,497 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 14:35:40,497 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 14:35:40,497 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 14:35:40,498 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 14:35:40,498 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 14:35:40,498 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 14:35:40,498 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 14:35:40,499 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 14:35:40,499 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 14:35:40,499 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 14:35:40,499 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 14:35:40,499 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 14:35:40,499 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 14:35:40,500 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 14:35:40,500 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 14:35:40,500 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 14:35:40,500 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 14:35:40,500 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 14:35:40,501 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 14:35:40,501 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:35:40,502 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 14:35:40,502 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 14:35:40,502 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 14:35:40,503 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 14:35:40,504 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 14:35:40,504 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 14:35:40,505 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 14:35:40,505 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 14:35:40,505 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 14:35:40,505 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 14:35:40,505 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 14:35:40,505 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 14:35:40,505 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 14:35:40,506 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 14:35:40,506 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 14:35:40,507 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 14:35:40,507 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 14:35:40,507 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 14:35:40,507 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 14:35:40,507 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 14:35:40,507 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 14:35:40,508 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 14:35:40,508 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 14:35:40,508 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 14:35:40,508 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 14:35:40,508 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 14:35:40,508 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 14:35:40,509 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 14:35:40,509 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 14:35:40,509 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 14:35:40,509 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 14:35:40,509 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 14:35:40,509 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 14:35:40,509 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 14:35:40,510 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 14:35:40,510 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 14:35:40,510 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 14:35:40,510 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 14:35:40,510 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 14:35:40,510 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:35:40,511 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:35:40,511 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:35:40,511 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 14:35:40,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 14:35:40,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 14:35:40,511 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 14:35:40,511 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 14:35:40,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 14:35:40,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:35:40,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:35:41,132 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:35:41,133 INFO L295 CfgBuilder]: Removed 17 assume(true) statements. [2020-09-25 14:35:41,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:35:41 BoogieIcfgContainer [2020-09-25 14:35:41,138 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:35:41,140 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:35:41,140 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:35:41,144 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:35:41,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:35:39" (1/3) ... [2020-09-25 14:35:41,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5220d5ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:35:41, skipping insertion in model container [2020-09-25 14:35:41,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:35:40" (2/3) ... [2020-09-25 14:35:41,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5220d5ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:35:41, skipping insertion in model container [2020-09-25 14:35:41,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:35:41" (3/3) ... [2020-09-25 14:35:41,148 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-rb-sentinel-1.i [2020-09-25 14:35:41,160 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:35:41,171 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-09-25 14:35:41,194 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-09-25 14:35:41,226 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:35:41,227 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:35:41,227 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:35:41,227 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:35:41,227 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:35:41,228 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:35:41,228 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:35:41,228 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:35:41,259 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states. [2020-09-25 14:35:41,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-25 14:35:41,267 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:35:41,268 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] [2020-09-25 14:35:41,269 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:35:41,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:35:41,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1523709425, now seen corresponding path program 1 times [2020-09-25 14:35:41,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:35:41,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [274351338] [2020-09-25 14:35:41,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:35:41,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:35:41,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:41,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:42,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:35:42,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 14:35:42,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:35:42,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 611 [2020-09-25 14:35:42,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:35:42,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:35:42,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:35:42,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 14:35:42,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 14:35:42,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 14:35:42,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:35:42,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:35:42,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:42,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:35:42,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:35:42,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:35:42,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 14:35:42,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:35:42,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:35:42,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:35:42,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:35:42,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:35:42,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:35:42,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:35:42,236 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [274351338] [2020-09-25 14:35:42,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:35:42,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 14:35:42,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915772642] [2020-09-25 14:35:42,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 14:35:42,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:35:42,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 14:35:42,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:35:42,267 INFO L87 Difference]: Start difference. First operand 123 states. Second operand 8 states. [2020-09-25 14:35:42,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:35:42,746 INFO L93 Difference]: Finished difference Result 281 states and 350 transitions. [2020-09-25 14:35:42,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 14:35:42,748 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2020-09-25 14:35:42,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:35:42,763 INFO L225 Difference]: With dead ends: 281 [2020-09-25 14:35:42,764 INFO L226 Difference]: Without dead ends: 119 [2020-09-25 14:35:42,770 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-09-25 14:35:42,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-09-25 14:35:42,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 98. [2020-09-25 14:35:42,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-09-25 14:35:42,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 101 transitions. [2020-09-25 14:35:42,829 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 101 transitions. Word has length 23 [2020-09-25 14:35:42,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:35:42,829 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 101 transitions. [2020-09-25 14:35:42,829 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 14:35:42,830 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 101 transitions. [2020-09-25 14:35:42,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-25 14:35:42,831 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:35:42,831 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] [2020-09-25 14:35:42,832 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:35:42,832 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:35:42,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:35:42,832 INFO L82 PathProgramCache]: Analyzing trace with hash 1939387545, now seen corresponding path program 1 times [2020-09-25 14:35:42,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:35:42,833 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [692908709] [2020-09-25 14:35:42,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:35:42,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:35:42,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:43,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:35:43,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 14:35:43,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:35:43,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-09-25 14:35:43,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:35:43,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:35:43,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:35:43,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 14:35:43,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 14:35:43,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:35:43,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:35:43,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:35:43,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:43,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:35:43,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:35:43,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:35:43,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:35:43,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:35:43,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:35:43,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:35:43,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:35:43,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:35:43,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:35:43,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:35:43,135 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [692908709] [2020-09-25 14:35:43,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:35:43,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 14:35:43,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444474355] [2020-09-25 14:35:43,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 14:35:43,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:35:43,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 14:35:43,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:35:43,139 INFO L87 Difference]: Start difference. First operand 98 states and 101 transitions. Second operand 6 states. [2020-09-25 14:35:43,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:35:43,384 INFO L93 Difference]: Finished difference Result 146 states and 152 transitions. [2020-09-25 14:35:43,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 14:35:43,384 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-09-25 14:35:43,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:35:43,386 INFO L225 Difference]: With dead ends: 146 [2020-09-25 14:35:43,387 INFO L226 Difference]: Without dead ends: 143 [2020-09-25 14:35:43,388 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:35:43,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-09-25 14:35:43,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 107. [2020-09-25 14:35:43,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-09-25 14:35:43,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 111 transitions. [2020-09-25 14:35:43,400 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 111 transitions. Word has length 29 [2020-09-25 14:35:43,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:35:43,401 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 111 transitions. [2020-09-25 14:35:43,401 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 14:35:43,401 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 111 transitions. [2020-09-25 14:35:43,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 14:35:43,402 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:35:43,403 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] [2020-09-25 14:35:43,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:35:43,403 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:35:43,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:35:43,404 INFO L82 PathProgramCache]: Analyzing trace with hash 1026590761, now seen corresponding path program 1 times [2020-09-25 14:35:43,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:35:43,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1789994819] [2020-09-25 14:35:43,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:35:43,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:35:43,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:43,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:44,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:35:44,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 14:35:44,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:35:44,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 640 [2020-09-25 14:35:44,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:35:44,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:35:44,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:35:44,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-09-25 14:35:44,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 14:35:44,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 14:35:44,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:35:44,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:35:44,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:44,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:35:44,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:35:44,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:35:44,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 14:35:44,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:35:44,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:35:44,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:35:44,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:35:44,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:35:44,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:35:44,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:35:44,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1789994819] [2020-09-25 14:35:44,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:35:44,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 14:35:44,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77179411] [2020-09-25 14:35:44,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 14:35:44,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:35:44,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 14:35:44,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:35:44,284 INFO L87 Difference]: Start difference. First operand 107 states and 111 transitions. Second operand 6 states. [2020-09-25 14:35:44,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:35:44,551 INFO L93 Difference]: Finished difference Result 162 states and 169 transitions. [2020-09-25 14:35:44,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 14:35:44,551 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-09-25 14:35:44,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:35:44,553 INFO L225 Difference]: With dead ends: 162 [2020-09-25 14:35:44,553 INFO L226 Difference]: Without dead ends: 140 [2020-09-25 14:35:44,554 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:35:44,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-09-25 14:35:44,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 112. [2020-09-25 14:35:44,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-09-25 14:35:44,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 116 transitions. [2020-09-25 14:35:44,564 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 116 transitions. Word has length 38 [2020-09-25 14:35:44,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:35:44,565 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 116 transitions. [2020-09-25 14:35:44,565 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 14:35:44,565 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 116 transitions. [2020-09-25 14:35:44,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 14:35:44,566 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:35:44,567 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:35:44,567 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:35:44,567 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:35:44,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:35:44,567 INFO L82 PathProgramCache]: Analyzing trace with hash 1637573847, now seen corresponding path program 1 times [2020-09-25 14:35:44,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:35:44,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [654797136] [2020-09-25 14:35:44,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:35:44,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:35:44,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:44,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:35:44,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 14:35:44,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:35:44,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-09-25 14:35:44,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:35:44,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:35:44,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:35:44,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 14:35:44,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 14:35:44,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:35:44,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:35:44,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:35:44,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:44,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:35:44,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:35:44,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:35:44,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:35:44,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:35:44,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:35:44,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:35:44,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:35:44,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:35:44,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:35:44,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:35:44,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [654797136] [2020-09-25 14:35:44,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:35:44,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 14:35:44,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298573216] [2020-09-25 14:35:44,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:35:44,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:35:44,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:35:44,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:35:44,828 INFO L87 Difference]: Start difference. First operand 112 states and 116 transitions. Second operand 5 states. [2020-09-25 14:35:45,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:35:45,063 INFO L93 Difference]: Finished difference Result 117 states and 121 transitions. [2020-09-25 14:35:45,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:35:45,064 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2020-09-25 14:35:45,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:35:45,066 INFO L225 Difference]: With dead ends: 117 [2020-09-25 14:35:45,066 INFO L226 Difference]: Without dead ends: 114 [2020-09-25 14:35:45,066 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:35:45,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-09-25 14:35:45,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 109. [2020-09-25 14:35:45,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-09-25 14:35:45,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 113 transitions. [2020-09-25 14:35:45,075 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 113 transitions. Word has length 38 [2020-09-25 14:35:45,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:35:45,075 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 113 transitions. [2020-09-25 14:35:45,076 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:35:45,076 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 113 transitions. [2020-09-25 14:35:45,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-25 14:35:45,077 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:35:45,078 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] [2020-09-25 14:35:45,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:35:45,078 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:35:45,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:35:45,079 INFO L82 PathProgramCache]: Analyzing trace with hash -1162057661, now seen corresponding path program 1 times [2020-09-25 14:35:45,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:35:45,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [34585122] [2020-09-25 14:35:45,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:35:45,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:35:45,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:45,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:35:45,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 14:35:45,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:35:45,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-09-25 14:35:45,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:35:45,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:35:45,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:35:45,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-09-25 14:35:45,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 14:35:45,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:35:45,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:35:45,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:35:45,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:45,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:35:45,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:35:45,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:35:45,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:35:45,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:35:45,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:35:45,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:35:45,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:35:45,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:35:45,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:35:45,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:35:45,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [34585122] [2020-09-25 14:35:45,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:35:45,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 14:35:45,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158728141] [2020-09-25 14:35:45,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:35:45,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:35:45,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:35:45,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:35:45,479 INFO L87 Difference]: Start difference. First operand 109 states and 113 transitions. Second operand 5 states. [2020-09-25 14:35:45,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:35:45,675 INFO L93 Difference]: Finished difference Result 112 states and 116 transitions. [2020-09-25 14:35:45,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:35:45,676 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2020-09-25 14:35:45,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:35:45,677 INFO L225 Difference]: With dead ends: 112 [2020-09-25 14:35:45,677 INFO L226 Difference]: Without dead ends: 109 [2020-09-25 14:35:45,678 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:35:45,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-09-25 14:35:45,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 106. [2020-09-25 14:35:45,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-09-25 14:35:45,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 110 transitions. [2020-09-25 14:35:45,697 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 110 transitions. Word has length 42 [2020-09-25 14:35:45,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:35:45,700 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 110 transitions. [2020-09-25 14:35:45,700 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:35:45,700 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 110 transitions. [2020-09-25 14:35:45,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-25 14:35:45,703 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:35:45,703 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] [2020-09-25 14:35:45,703 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:35:45,704 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:35:45,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:35:45,704 INFO L82 PathProgramCache]: Analyzing trace with hash -41137780, now seen corresponding path program 1 times [2020-09-25 14:35:45,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:35:45,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1065269744] [2020-09-25 14:35:45,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:35:45,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:35:45,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:45,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:47,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:35:47,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 14:35:47,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:35:47,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1441 [2020-09-25 14:35:47,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:35:47,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:35:47,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 14:35:47,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 14:35:47,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 14:35:47,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:35:47,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:35:47,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:35:47,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:47,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:35:47,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:35:47,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:35:47,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:35:47,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:35:47,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:35:47,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:35:47,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:35:47,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:35:47,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:35:47,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:35:47,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1065269744] [2020-09-25 14:35:47,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:35:47,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 14:35:47,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396401225] [2020-09-25 14:35:47,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 14:35:47,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:35:47,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 14:35:47,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-25 14:35:47,330 INFO L87 Difference]: Start difference. First operand 106 states and 110 transitions. Second operand 10 states. [2020-09-25 14:35:47,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:35:47,896 INFO L93 Difference]: Finished difference Result 154 states and 160 transitions. [2020-09-25 14:35:47,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 14:35:47,896 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 44 [2020-09-25 14:35:47,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:35:47,898 INFO L225 Difference]: With dead ends: 154 [2020-09-25 14:35:47,898 INFO L226 Difference]: Without dead ends: 152 [2020-09-25 14:35:47,899 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-09-25 14:35:47,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-09-25 14:35:47,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 115. [2020-09-25 14:35:47,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-09-25 14:35:47,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 119 transitions. [2020-09-25 14:35:47,907 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 119 transitions. Word has length 44 [2020-09-25 14:35:47,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:35:47,907 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 119 transitions. [2020-09-25 14:35:47,907 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 14:35:47,908 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 119 transitions. [2020-09-25 14:35:47,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-25 14:35:47,909 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:35:47,909 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:35:47,909 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 14:35:47,910 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:35:47,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:35:47,910 INFO L82 PathProgramCache]: Analyzing trace with hash 784866741, now seen corresponding path program 1 times [2020-09-25 14:35:47,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:35:47,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [797229147] [2020-09-25 14:35:47,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:35:47,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:35:47,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:48,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:48,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:49,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:51,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:51,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:52,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:52,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:52,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:35:52,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 14:35:52,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:35:52,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 14:35:52,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:35:52,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:35:52,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 14:35:52,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-09-25 14:35:52,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 14:35:52,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:35:53,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:35:53,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:35:53,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:53,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:35:53,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:35:53,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:35:53,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 14:35:53,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:35:53,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:35:53,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:35:53,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:35:53,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:35:53,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:35:53,456 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:35:53,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [797229147] [2020-09-25 14:35:53,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:35:53,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 14:35:53,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151103949] [2020-09-25 14:35:53,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 14:35:53,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:35:53,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 14:35:53,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2020-09-25 14:35:53,459 INFO L87 Difference]: Start difference. First operand 115 states and 119 transitions. Second operand 15 states. [2020-09-25 14:35:54,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:35:54,521 INFO L93 Difference]: Finished difference Result 174 states and 181 transitions. [2020-09-25 14:35:54,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 14:35:54,521 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 45 [2020-09-25 14:35:54,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:35:54,523 INFO L225 Difference]: With dead ends: 174 [2020-09-25 14:35:54,523 INFO L226 Difference]: Without dead ends: 152 [2020-09-25 14:35:54,524 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=226, Invalid=644, Unknown=0, NotChecked=0, Total=870 [2020-09-25 14:35:54,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-09-25 14:35:54,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 122. [2020-09-25 14:35:54,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-09-25 14:35:54,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 126 transitions. [2020-09-25 14:35:54,531 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 126 transitions. Word has length 45 [2020-09-25 14:35:54,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:35:54,532 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 126 transitions. [2020-09-25 14:35:54,532 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 14:35:54,532 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 126 transitions. [2020-09-25 14:35:54,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 14:35:54,534 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:35:54,534 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:35:54,535 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 14:35:54,535 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:35:54,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:35:54,535 INFO L82 PathProgramCache]: Analyzing trace with hash 1939042985, now seen corresponding path program 2 times [2020-09-25 14:35:54,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:35:54,536 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [75186240] [2020-09-25 14:35:54,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:35:54,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:35:54,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:54,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:35:54,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 14:35:54,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:35:54,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 251 [2020-09-25 14:35:54,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:35:54,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:35:54,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:35:54,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 14:35:54,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 14:35:54,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:35:54,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:35:54,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:35:54,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:54,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:35:54,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:35:54,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:35:54,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:35:54,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:35:54,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:35:54,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:35:54,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:35:54,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:35:54,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:35:54,903 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 14:35:54,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [75186240] [2020-09-25 14:35:54,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:35:54,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 14:35:54,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815765744] [2020-09-25 14:35:54,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:35:54,905 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:35:54,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:35:54,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:35:54,906 INFO L87 Difference]: Start difference. First operand 122 states and 126 transitions. Second operand 7 states. [2020-09-25 14:35:55,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:35:55,279 INFO L93 Difference]: Finished difference Result 147 states and 152 transitions. [2020-09-25 14:35:55,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 14:35:55,280 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-09-25 14:35:55,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:35:55,281 INFO L225 Difference]: With dead ends: 147 [2020-09-25 14:35:55,282 INFO L226 Difference]: Without dead ends: 106 [2020-09-25 14:35:55,283 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:35:55,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-09-25 14:35:55,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 103. [2020-09-25 14:35:55,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-09-25 14:35:55,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 106 transitions. [2020-09-25 14:35:55,287 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 106 transitions. Word has length 52 [2020-09-25 14:35:55,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:35:55,288 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 106 transitions. [2020-09-25 14:35:55,288 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:35:55,288 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 106 transitions. [2020-09-25 14:35:55,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 14:35:55,289 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:35:55,289 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] [2020-09-25 14:35:55,289 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 14:35:55,289 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:35:55,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:35:55,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1051665877, now seen corresponding path program 1 times [2020-09-25 14:35:55,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:35:55,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1641006950] [2020-09-25 14:35:55,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:35:55,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:35:55,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:55,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:56,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:59,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:35:59,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 14:35:59,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:35:59,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3953 [2020-09-25 14:35:59,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:35:59,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:35:59,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 14:35:59,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 14:35:59,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 14:35:59,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:35:59,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:35:59,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:35:59,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:59,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:35:59,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:35:59,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:35:59,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:35:59,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:35:59,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:35:59,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:35:59,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:35:59,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:35:59,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:35:59,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:35:59,442 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1641006950] [2020-09-25 14:35:59,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:35:59,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 14:35:59,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414918956] [2020-09-25 14:35:59,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 14:35:59,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:35:59,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 14:35:59,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-25 14:35:59,445 INFO L87 Difference]: Start difference. First operand 103 states and 106 transitions. Second operand 10 states. [2020-09-25 14:35:59,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:35:59,984 INFO L93 Difference]: Finished difference Result 179 states and 186 transitions. [2020-09-25 14:35:59,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 14:35:59,985 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 54 [2020-09-25 14:35:59,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:35:59,987 INFO L225 Difference]: With dead ends: 179 [2020-09-25 14:35:59,987 INFO L226 Difference]: Without dead ends: 177 [2020-09-25 14:35:59,988 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2020-09-25 14:35:59,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-09-25 14:35:59,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 92. [2020-09-25 14:35:59,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-09-25 14:35:59,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 95 transitions. [2020-09-25 14:35:59,993 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 95 transitions. Word has length 54 [2020-09-25 14:35:59,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:35:59,994 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 95 transitions. [2020-09-25 14:35:59,994 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 14:35:59,994 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 95 transitions. [2020-09-25 14:35:59,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-25 14:35:59,995 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:35:59,995 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:35:59,995 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 14:35:59,995 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:35:59,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:35:59,996 INFO L82 PathProgramCache]: Analyzing trace with hash 999535374, now seen corresponding path program 1 times [2020-09-25 14:35:59,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:35:59,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [738458529] [2020-09-25 14:35:59,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:36:00,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:00,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:00,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:00,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-25 14:36:00,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:00,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 914 [2020-09-25 14:36:00,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:00,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:00,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 14:36:00,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 14:36:00,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 14:36:00,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:01,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:36:01,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:01,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:01,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:01,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:36:01,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:01,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:36:01,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:01,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:01,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:36:01,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:01,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:36:01,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:36:01,443 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:36:01,443 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [738458529] [2020-09-25 14:36:01,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:36:01,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 14:36:01,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002288823] [2020-09-25 14:36:01,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 14:36:01,445 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:36:01,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 14:36:01,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2020-09-25 14:36:01,445 INFO L87 Difference]: Start difference. First operand 92 states and 95 transitions. Second operand 17 states. [2020-09-25 14:36:02,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:36:02,855 INFO L93 Difference]: Finished difference Result 181 states and 189 transitions. [2020-09-25 14:36:02,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 14:36:02,856 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 55 [2020-09-25 14:36:02,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:36:02,858 INFO L225 Difference]: With dead ends: 181 [2020-09-25 14:36:02,858 INFO L226 Difference]: Without dead ends: 178 [2020-09-25 14:36:02,859 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2020-09-25 14:36:02,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-09-25 14:36:02,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 125. [2020-09-25 14:36:02,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-09-25 14:36:02,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 130 transitions. [2020-09-25 14:36:02,865 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 130 transitions. Word has length 55 [2020-09-25 14:36:02,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:36:02,865 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 130 transitions. [2020-09-25 14:36:02,866 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 14:36:02,866 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 130 transitions. [2020-09-25 14:36:02,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-25 14:36:02,867 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:36:02,867 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:36:02,867 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 14:36:02,867 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:36:02,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:36:02,868 INFO L82 PathProgramCache]: Analyzing trace with hash 1380187476, now seen corresponding path program 1 times [2020-09-25 14:36:02,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:36:02,868 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1031548921] [2020-09-25 14:36:02,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:36:02,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:02,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:02,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:04,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:04,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:07,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:07,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 14:36:07,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:36:07,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-25 14:36:07,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:07,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:07,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:36:07,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-09-25 14:36:07,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 14:36:07,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:08,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:36:08,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:08,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:08,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:08,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:36:08,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:08,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:36:08,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:08,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:08,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:36:08,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:08,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:36:08,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:36:08,032 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 14:36:08,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1031548921] [2020-09-25 14:36:08,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:36:08,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 14:36:08,033 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696548967] [2020-09-25 14:36:08,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 14:36:08,034 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:36:08,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 14:36:08,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:36:08,035 INFO L87 Difference]: Start difference. First operand 125 states and 130 transitions. Second operand 6 states. [2020-09-25 14:36:08,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:36:08,285 INFO L93 Difference]: Finished difference Result 153 states and 160 transitions. [2020-09-25 14:36:08,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 14:36:08,286 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-09-25 14:36:08,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:36:08,287 INFO L225 Difference]: With dead ends: 153 [2020-09-25 14:36:08,288 INFO L226 Difference]: Without dead ends: 131 [2020-09-25 14:36:08,288 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:36:08,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-09-25 14:36:08,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 128. [2020-09-25 14:36:08,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-09-25 14:36:08,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 133 transitions. [2020-09-25 14:36:08,294 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 133 transitions. Word has length 64 [2020-09-25 14:36:08,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:36:08,295 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 133 transitions. [2020-09-25 14:36:08,295 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 14:36:08,295 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 133 transitions. [2020-09-25 14:36:08,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-25 14:36:08,296 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:36:08,296 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:36:08,296 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 14:36:08,296 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:36:08,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:36:08,297 INFO L82 PathProgramCache]: Analyzing trace with hash 754417445, now seen corresponding path program 1 times [2020-09-25 14:36:08,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:36:08,297 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [490874175] [2020-09-25 14:36:08,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:36:08,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:08,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:10,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:10,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-25 14:36:10,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:10,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2123 [2020-09-25 14:36:10,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:10,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:10,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 14:36:10,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 14:36:10,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 14:36:10,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:36:11,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:36:11,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:11,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:11,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:11,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:36:11,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:11,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:36:11,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:11,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:11,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:36:11,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:11,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:36:11,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:36:11,231 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:36:11,231 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [490874175] [2020-09-25 14:36:11,232 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:36:11,232 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-09-25 14:36:11,232 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378849872] [2020-09-25 14:36:11,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-09-25 14:36:11,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:36:11,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-09-25 14:36:11,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2020-09-25 14:36:11,234 INFO L87 Difference]: Start difference. First operand 128 states and 133 transitions. Second operand 22 states. [2020-09-25 14:36:12,608 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 45 [2020-09-25 14:36:12,747 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 39 [2020-09-25 14:36:13,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:36:13,515 INFO L93 Difference]: Finished difference Result 205 states and 212 transitions. [2020-09-25 14:36:13,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-25 14:36:13,515 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 65 [2020-09-25 14:36:13,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:36:13,517 INFO L225 Difference]: With dead ends: 205 [2020-09-25 14:36:13,518 INFO L226 Difference]: Without dead ends: 202 [2020-09-25 14:36:13,519 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=355, Invalid=1451, Unknown=0, NotChecked=0, Total=1806 [2020-09-25 14:36:13,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-09-25 14:36:13,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 140. [2020-09-25 14:36:13,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-09-25 14:36:13,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 145 transitions. [2020-09-25 14:36:13,526 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 145 transitions. Word has length 65 [2020-09-25 14:36:13,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:36:13,526 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 145 transitions. [2020-09-25 14:36:13,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-09-25 14:36:13,527 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 145 transitions. [2020-09-25 14:36:13,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 14:36:13,527 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:36:13,528 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:36:13,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 14:36:13,528 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:36:13,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:36:13,528 INFO L82 PathProgramCache]: Analyzing trace with hash 715756074, now seen corresponding path program 1 times [2020-09-25 14:36:13,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:36:13,529 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1490851377] [2020-09-25 14:36:13,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:36:13,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:13,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:13,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:14,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:15,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:16,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:18,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:18,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:18,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 14:36:18,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:36:18,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 14:36:18,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:18,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:18,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 14:36:18,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-09-25 14:36:18,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 14:36:18,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:36:18,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:36:18,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:18,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:18,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:18,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:36:18,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:18,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 14:36:18,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:18,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:18,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:36:18,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:18,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:36:18,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:36:18,934 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:36:18,935 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1490851377] [2020-09-25 14:36:18,935 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:36:18,935 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 14:36:18,935 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010035877] [2020-09-25 14:36:18,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 14:36:18,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:36:18,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 14:36:18,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2020-09-25 14:36:18,937 INFO L87 Difference]: Start difference. First operand 140 states and 145 transitions. Second operand 16 states. [2020-09-25 14:36:20,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:36:20,057 INFO L93 Difference]: Finished difference Result 229 states and 238 transitions. [2020-09-25 14:36:20,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 14:36:20,058 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 71 [2020-09-25 14:36:20,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:36:20,060 INFO L225 Difference]: With dead ends: 229 [2020-09-25 14:36:20,060 INFO L226 Difference]: Without dead ends: 207 [2020-09-25 14:36:20,061 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=174, Invalid=818, Unknown=0, NotChecked=0, Total=992 [2020-09-25 14:36:20,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-09-25 14:36:20,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 168. [2020-09-25 14:36:20,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-09-25 14:36:20,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 174 transitions. [2020-09-25 14:36:20,069 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 174 transitions. Word has length 71 [2020-09-25 14:36:20,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:36:20,069 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 174 transitions. [2020-09-25 14:36:20,069 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 14:36:20,069 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 174 transitions. [2020-09-25 14:36:20,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-09-25 14:36:20,070 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:36:20,070 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:36:20,071 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 14:36:20,071 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:36:20,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:36:20,071 INFO L82 PathProgramCache]: Analyzing trace with hash 181469332, now seen corresponding path program 2 times [2020-09-25 14:36:20,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:36:20,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [144500090] [2020-09-25 14:36:20,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:36:20,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:20,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:20,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:21,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:22,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:23,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:24,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:25,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:25,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:25,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 14:36:25,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:36:25,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5699 [2020-09-25 14:36:25,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:25,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:25,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 14:36:25,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 14:36:25,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 14:36:25,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:26,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:36:26,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:26,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:26,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:26,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:36:26,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:26,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 14:36:26,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:26,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:26,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:36:26,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:26,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:36:26,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:36:26,661 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:36:26,662 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [144500090] [2020-09-25 14:36:26,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:36:26,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-25 14:36:26,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277130947] [2020-09-25 14:36:26,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-25 14:36:26,663 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:36:26,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-25 14:36:26,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2020-09-25 14:36:26,663 INFO L87 Difference]: Start difference. First operand 168 states and 174 transitions. Second operand 19 states. [2020-09-25 14:36:27,211 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2020-09-25 14:36:28,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:36:28,680 INFO L93 Difference]: Finished difference Result 209 states and 216 transitions. [2020-09-25 14:36:28,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-25 14:36:28,680 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 78 [2020-09-25 14:36:28,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:36:28,682 INFO L225 Difference]: With dead ends: 209 [2020-09-25 14:36:28,682 INFO L226 Difference]: Without dead ends: 163 [2020-09-25 14:36:28,684 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=261, Invalid=1221, Unknown=0, NotChecked=0, Total=1482 [2020-09-25 14:36:28,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-09-25 14:36:28,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 152. [2020-09-25 14:36:28,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-09-25 14:36:28,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 157 transitions. [2020-09-25 14:36:28,691 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 157 transitions. Word has length 78 [2020-09-25 14:36:28,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:36:28,691 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 157 transitions. [2020-09-25 14:36:28,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-25 14:36:28,692 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 157 transitions. [2020-09-25 14:36:28,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-09-25 14:36:28,692 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:36:28,693 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:36:28,693 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-25 14:36:28,693 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:36:28,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:36:28,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1069144387, now seen corresponding path program 2 times [2020-09-25 14:36:28,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:36:28,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [941712014] [2020-09-25 14:36:28,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:36:28,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:28,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking...