/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label46.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 02:53:07,926 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 02:53:07,929 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 02:53:07,953 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 02:53:07,953 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 02:53:07,955 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 02:53:07,956 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 02:53:07,958 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 02:53:07,960 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 02:53:07,961 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 02:53:07,962 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 02:53:07,964 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 02:53:07,964 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 02:53:07,965 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 02:53:07,966 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 02:53:07,968 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 02:53:07,969 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 02:53:07,970 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 02:53:07,972 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 02:53:07,977 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 02:53:07,979 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 02:53:07,983 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 02:53:07,984 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 02:53:07,985 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 02:53:07,988 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 02:53:07,988 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 02:53:07,988 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 02:53:07,990 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 02:53:07,990 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 02:53:07,991 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 02:53:07,992 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 02:53:07,992 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 02:53:07,993 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 02:53:07,994 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 02:53:07,995 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 02:53:07,996 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 02:53:07,996 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 02:53:07,997 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 02:53:07,997 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 02:53:07,998 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 02:53:07,999 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 02:53:08,000 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 02:53:08,024 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 02:53:08,024 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 02:53:08,025 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 02:53:08,025 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 02:53:08,026 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 02:53:08,026 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 02:53:08,026 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 02:53:08,026 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 02:53:08,027 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 02:53:08,027 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 02:53:08,027 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 02:53:08,027 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 02:53:08,027 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 02:53:08,028 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 02:53:08,028 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 02:53:08,028 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 02:53:08,028 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 02:53:08,028 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 02:53:08,029 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 02:53:08,029 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 02:53:08,029 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 02:53:08,029 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 02:53:08,030 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 02:53:08,030 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 02:53:08,030 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 02:53:08,030 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 02:53:08,030 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 02:53:08,031 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 02:53:08,031 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 02:53:08,031 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 02:53:08,343 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 02:53:08,367 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 02:53:08,373 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 02:53:08,375 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 02:53:08,375 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 02:53:08,376 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label46.c [2020-10-14 02:53:08,455 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6a58d9322/2e473989e4624c9880523f97fc1b3b7c/FLAGb383f5c2c [2020-10-14 02:53:09,232 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 02:53:09,233 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label46.c [2020-10-14 02:53:09,262 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6a58d9322/2e473989e4624c9880523f97fc1b3b7c/FLAGb383f5c2c [2020-10-14 02:53:09,282 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6a58d9322/2e473989e4624c9880523f97fc1b3b7c [2020-10-14 02:53:09,295 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 02:53:09,298 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 02:53:09,299 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 02:53:09,299 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 02:53:09,304 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 02:53:09,306 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:53:09" (1/1) ... [2020-10-14 02:53:09,309 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bcababa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:53:09, skipping insertion in model container [2020-10-14 02:53:09,309 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:53:09" (1/1) ... [2020-10-14 02:53:09,320 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 02:53:09,461 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 02:53:11,502 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 02:53:11,509 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 02:53:12,211 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 02:53:12,246 INFO L208 MainTranslator]: Completed translation [2020-10-14 02:53:12,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:53:12 WrapperNode [2020-10-14 02:53:12,248 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 02:53:12,249 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 02:53:12,249 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 02:53:12,250 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 02:53:12,268 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:53:12" (1/1) ... [2020-10-14 02:53:12,270 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:53:12" (1/1) ... [2020-10-14 02:53:12,336 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:53:12" (1/1) ... [2020-10-14 02:53:12,336 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:53:12" (1/1) ... [2020-10-14 02:53:12,461 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:53:12" (1/1) ... [2020-10-14 02:53:12,501 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:53:12" (1/1) ... [2020-10-14 02:53:12,537 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:53:12" (1/1) ... [2020-10-14 02:53:12,580 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 02:53:12,581 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 02:53:12,581 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 02:53:12,581 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 02:53:12,583 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:53:12" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 02:53:12,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 02:53:12,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 02:53:12,673 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 02:53:12,674 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 02:53:12,674 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 02:53:12,674 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 02:53:12,674 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 02:53:12,676 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 02:53:12,677 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 02:53:12,677 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 02:53:12,677 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 02:53:12,677 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 02:53:12,677 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 02:53:12,677 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 02:53:12,678 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 02:53:12,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 02:53:12,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 02:53:18,195 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 02:53:18,196 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 02:53:18,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:53:18 BoogieIcfgContainer [2020-10-14 02:53:18,212 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 02:53:18,215 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 02:53:18,216 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 02:53:18,219 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 02:53:18,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 02:53:09" (1/3) ... [2020-10-14 02:53:18,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46a2875c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:53:18, skipping insertion in model container [2020-10-14 02:53:18,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:53:12" (2/3) ... [2020-10-14 02:53:18,223 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46a2875c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:53:18, skipping insertion in model container [2020-10-14 02:53:18,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:53:18" (3/3) ... [2020-10-14 02:53:18,227 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label46.c [2020-10-14 02:53:18,241 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 02:53:18,255 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 02:53:18,273 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 02:53:18,312 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 02:53:18,312 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 02:53:18,313 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 02:53:18,313 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 02:53:18,313 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 02:53:18,313 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 02:53:18,313 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 02:53:18,313 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 02:53:18,367 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-14 02:53:18,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-14 02:53:18,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:53:18,385 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:53:18,385 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:53:18,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:53:18,393 INFO L82 PathProgramCache]: Analyzing trace with hash 415024674, now seen corresponding path program 1 times [2020-10-14 02:53:18,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:53:18,405 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1594836817] [2020-10-14 02:53:18,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:53:18,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:53:18,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:19,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:53:19,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 02:53:19,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:53:19,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 512 [2020-10-14 02:53:19,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:53:19,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:53:19,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 02:53:19,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 02:53:19,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 02:53:19,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-14 02:53:19,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:53:19,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:53:19,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:19,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:53:19,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:53:19,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:53:19,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 02:53:19,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:53:19,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:53:19,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:53:19,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:53:19,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 02:53:19,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 02:53:19,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:53:19,386 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1594836817] [2020-10-14 02:53:19,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 02:53:19,390 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 02:53:19,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8771795] [2020-10-14 02:53:19,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 02:53:19,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:53:19,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 02:53:19,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 02:53:19,421 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 4 states. [2020-10-14 02:53:28,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:53:28,760 INFO L93 Difference]: Finished difference Result 2471 states and 4736 transitions. [2020-10-14 02:53:28,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:53:28,763 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-10-14 02:53:28,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:53:28,808 INFO L225 Difference]: With dead ends: 2471 [2020-10-14 02:53:28,808 INFO L226 Difference]: Without dead ends: 1568 [2020-10-14 02:53:28,820 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:53:28,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-14 02:53:29,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553. [2020-10-14 02:53:29,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1553 states. [2020-10-14 02:53:29,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2521 transitions. [2020-10-14 02:53:29,018 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2521 transitions. Word has length 67 [2020-10-14 02:53:29,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:53:29,019 INFO L479 AbstractCegarLoop]: Abstraction has 1553 states and 2521 transitions. [2020-10-14 02:53:29,019 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 02:53:29,020 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2521 transitions. [2020-10-14 02:53:29,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-14 02:53:29,031 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:53:29,032 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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] [2020-10-14 02:53:29,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 02:53:29,033 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:53:29,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:53:29,034 INFO L82 PathProgramCache]: Analyzing trace with hash 795068955, now seen corresponding path program 1 times [2020-10-14 02:53:29,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:53:29,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [273893022] [2020-10-14 02:53:29,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:53:29,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:53:29,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:29,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:29,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:30,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:53:30,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-14 02:53:30,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:53:30,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1179 [2020-10-14 02:53:30,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:53:30,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:53:30,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:53:30,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 02:53:30,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 02:53:30,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:53:30,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:53:30,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:53:30,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:30,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:53:30,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:53:30,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:53:30,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:53:30,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:53:30,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:53:30,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:53:30,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:53:30,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:53:30,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:53:30,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:53:30,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:53:30,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:30,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:53:30,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 02:53:30,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:53:30,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-14 02:53:30,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:53:30,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:53:30,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:53:30,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:53:30,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 02:53:30,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:53:30,532 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:53:30,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [273893022] [2020-10-14 02:53:30,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:53:30,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:53:30,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946558401] [2020-10-14 02:53:30,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:53:30,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:53:30,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:53:30,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:53:30,537 INFO L87 Difference]: Start difference. First operand 1553 states and 2521 transitions. Second operand 5 states. [2020-10-14 02:53:39,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:53:39,522 INFO L93 Difference]: Finished difference Result 4671 states and 7648 transitions. [2020-10-14 02:53:39,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:53:39,524 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-10-14 02:53:39,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:53:39,543 INFO L225 Difference]: With dead ends: 4671 [2020-10-14 02:53:39,547 INFO L226 Difference]: Without dead ends: 3124 [2020-10-14 02:53:39,555 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:53:39,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3124 states. [2020-10-14 02:53:39,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3124 to 3111. [2020-10-14 02:53:39,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3111 states. [2020-10-14 02:53:39,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3111 states to 3111 states and 4441 transitions. [2020-10-14 02:53:39,649 INFO L78 Accepts]: Start accepts. Automaton has 3111 states and 4441 transitions. Word has length 142 [2020-10-14 02:53:39,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:53:39,651 INFO L479 AbstractCegarLoop]: Abstraction has 3111 states and 4441 transitions. [2020-10-14 02:53:39,651 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:53:39,651 INFO L276 IsEmpty]: Start isEmpty. Operand 3111 states and 4441 transitions. [2020-10-14 02:53:39,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-14 02:53:39,654 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:53:39,654 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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] [2020-10-14 02:53:39,655 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 02:53:39,655 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:53:39,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:53:39,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1934670051, now seen corresponding path program 1 times [2020-10-14 02:53:39,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:53:39,656 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1868930794] [2020-10-14 02:53:39,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:53:39,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:53:39,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:40,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:40,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:53:40,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-14 02:53:40,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:53:40,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1078 [2020-10-14 02:53:40,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:53:40,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:53:40,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:53:40,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-14 02:53:40,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 02:53:40,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:53:40,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:53:40,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:53:40,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:40,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:53:40,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:53:40,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:53:40,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 02:53:40,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:53:40,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:53:40,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:53:40,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:53:40,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:53:40,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:53:40,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:53:40,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:53:40,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:41,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:53:41,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 02:53:41,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:53:41,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-14 02:53:41,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:53:41,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:53:41,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:53:41,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:53:41,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 02:53:41,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:53:41,090 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:53:41,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1868930794] [2020-10-14 02:53:41,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:53:41,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:53:41,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56974579] [2020-10-14 02:53:41,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:53:41,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:53:41,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:53:41,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:53:41,096 INFO L87 Difference]: Start difference. First operand 3111 states and 4441 transitions. Second operand 5 states. [2020-10-14 02:53:51,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:53:51,658 INFO L93 Difference]: Finished difference Result 9335 states and 13514 transitions. [2020-10-14 02:53:51,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:53:51,659 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-10-14 02:53:51,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:53:51,697 INFO L225 Difference]: With dead ends: 9335 [2020-10-14 02:53:51,697 INFO L226 Difference]: Without dead ends: 6230 [2020-10-14 02:53:51,707 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:53:51,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6230 states. [2020-10-14 02:53:51,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6230 to 6226. [2020-10-14 02:53:51,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6226 states. [2020-10-14 02:53:51,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6226 states to 6226 states and 8300 transitions. [2020-10-14 02:53:51,908 INFO L78 Accepts]: Start accepts. Automaton has 6226 states and 8300 transitions. Word has length 146 [2020-10-14 02:53:51,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:53:51,911 INFO L479 AbstractCegarLoop]: Abstraction has 6226 states and 8300 transitions. [2020-10-14 02:53:51,914 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:53:51,914 INFO L276 IsEmpty]: Start isEmpty. Operand 6226 states and 8300 transitions. [2020-10-14 02:53:51,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-10-14 02:53:51,922 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:53:51,922 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:53:51,923 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 02:53:51,923 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:53:51,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:53:51,923 INFO L82 PathProgramCache]: Analyzing trace with hash 1737403654, now seen corresponding path program 1 times [2020-10-14 02:53:51,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:53:51,924 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [167073864] [2020-10-14 02:53:51,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:53:51,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:53:52,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:52,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:54,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:53:54,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-10-14 02:53:54,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:53:54,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2047 [2020-10-14 02:53:54,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:53:54,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:53:54,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:53:54,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-14 02:53:54,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 02:53:54,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 02:53:54,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:53:54,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:53:54,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:54,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:53:54,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:53:54,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:53:54,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:53:54,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:53:54,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:53:54,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:53:54,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:53:54,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:53:54,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:53:54,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:53:54,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:53:54,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:54,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:53:54,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-14 02:53:54,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:53:54,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-14 02:53:54,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:53:54,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:53:54,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:53:54,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:53:54,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-14 02:53:54,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:53:54,649 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:53:54,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [167073864] [2020-10-14 02:53:54,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:53:54,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 02:53:54,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777690034] [2020-10-14 02:53:54,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 02:53:54,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:53:54,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 02:53:54,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:53:54,656 INFO L87 Difference]: Start difference. First operand 6226 states and 8300 transitions. Second operand 6 states. [2020-10-14 02:54:05,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:54:05,638 INFO L93 Difference]: Finished difference Result 18669 states and 25328 transitions. [2020-10-14 02:54:05,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:54:05,639 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 215 [2020-10-14 02:54:05,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:54:05,709 INFO L225 Difference]: With dead ends: 18669 [2020-10-14 02:54:05,709 INFO L226 Difference]: Without dead ends: 12449 [2020-10-14 02:54:05,730 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:54:05,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12449 states. [2020-10-14 02:54:06,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12449 to 11678. [2020-10-14 02:54:06,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11678 states. [2020-10-14 02:54:06,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11678 states to 11678 states and 15952 transitions. [2020-10-14 02:54:06,153 INFO L78 Accepts]: Start accepts. Automaton has 11678 states and 15952 transitions. Word has length 215 [2020-10-14 02:54:06,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:54:06,154 INFO L479 AbstractCegarLoop]: Abstraction has 11678 states and 15952 transitions. [2020-10-14 02:54:06,154 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 02:54:06,154 INFO L276 IsEmpty]: Start isEmpty. Operand 11678 states and 15952 transitions. [2020-10-14 02:54:06,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-10-14 02:54:06,165 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:54:06,165 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1] [2020-10-14 02:54:06,166 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 02:54:06,166 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:54:06,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:54:06,167 INFO L82 PathProgramCache]: Analyzing trace with hash -1805335805, now seen corresponding path program 1 times [2020-10-14 02:54:06,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:54:06,168 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [673673270] [2020-10-14 02:54:06,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:54:06,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:54:06,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:54:06,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:54:07,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:54:07,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:54:08,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:54:10,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:54:10,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 256 [2020-10-14 02:54:10,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 02:54:10,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4296 [2020-10-14 02:54:10,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:54:10,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:54:10,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:54:10,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-14 02:54:10,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-14 02:54:10,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:54:10,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:54:10,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:54:10,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:54:10,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:54:10,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:54:10,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:54:10,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:54:10,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:54:10,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:54:10,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:54:10,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:54:10,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:54:10,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 02:54:10,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:54:10,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:54:10,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:54:10,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:54:10,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 02:54:10,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:54:10,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-14 02:54:10,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:54:10,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:54:10,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:54:10,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:54:10,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 02:54:10,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 02:54:10,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 02:54:10,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:54:10,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:54:11,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:54:11,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-14 02:54:11,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:54:11,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-14 02:54:11,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:54:11,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:54:11,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:54:11,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:54:11,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-14 02:54:11,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:54:11,143 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 196 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:54:11,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [673673270] [2020-10-14 02:54:11,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:54:11,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:54:11,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010534343] [2020-10-14 02:54:11,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:54:11,146 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:54:11,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:54:11,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:54:11,147 INFO L87 Difference]: Start difference. First operand 11678 states and 15952 transitions. Second operand 7 states. [2020-10-14 02:54:23,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:54:23,422 INFO L93 Difference]: Finished difference Result 32987 states and 47786 transitions. [2020-10-14 02:54:23,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:54:23,424 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 244 [2020-10-14 02:54:23,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:54:23,517 INFO L225 Difference]: With dead ends: 32987 [2020-10-14 02:54:23,517 INFO L226 Difference]: Without dead ends: 21315 [2020-10-14 02:54:23,546 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:54:23,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21315 states. [2020-10-14 02:54:24,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21315 to 21232. [2020-10-14 02:54:24,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21232 states. [2020-10-14 02:54:24,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21232 states to 21232 states and 29663 transitions. [2020-10-14 02:54:24,311 INFO L78 Accepts]: Start accepts. Automaton has 21232 states and 29663 transitions. Word has length 244 [2020-10-14 02:54:24,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:54:24,311 INFO L479 AbstractCegarLoop]: Abstraction has 21232 states and 29663 transitions. [2020-10-14 02:54:24,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:54:24,312 INFO L276 IsEmpty]: Start isEmpty. Operand 21232 states and 29663 transitions. [2020-10-14 02:54:24,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2020-10-14 02:54:24,320 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:54:24,320 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:54:24,320 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 02:54:24,320 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:54:24,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:54:24,321 INFO L82 PathProgramCache]: Analyzing trace with hash -171726897, now seen corresponding path program 1 times [2020-10-14 02:54:24,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:54:24,321 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [12055177] [2020-10-14 02:54:24,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:54:24,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:54:24,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:54:24,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:54:24,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:54:25,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:54:25,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 278 [2020-10-14 02:54:25,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:54:25,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1084 [2020-10-14 02:54:25,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:54:25,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:54:25,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:54:25,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 02:54:25,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-14 02:54:25,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:54:25,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:54:25,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:54:25,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:54:25,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:54:25,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:54:25,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:54:25,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:54:25,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:54:25,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:54:25,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:54:25,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:54:25,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:54:25,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:54:25,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:54:25,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:54:25,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:54:25,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:54:25,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 02:54:25,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:54:25,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-14 02:54:25,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:54:25,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:54:25,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:54:25,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:54:25,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 02:54:25,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:54:25,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 02:54:25,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:54:25,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:54:25,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:54:25,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-14 02:54:25,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:54:25,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-14 02:54:25,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:54:25,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:54:25,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:54:25,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:54:25,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 02:54:25,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:54:26,061 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 192 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:54:26,062 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [12055177] [2020-10-14 02:54:26,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:54:26,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:54:26,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778988439] [2020-10-14 02:54:26,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:54:26,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:54:26,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:54:26,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:54:26,066 INFO L87 Difference]: Start difference. First operand 21232 states and 29663 transitions. Second operand 7 states. [2020-10-14 02:54:43,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:54:43,098 INFO L93 Difference]: Finished difference Result 53861 states and 80023 transitions. [2020-10-14 02:54:43,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:54:43,100 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 266 [2020-10-14 02:54:43,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:54:43,298 INFO L225 Difference]: With dead ends: 53861 [2020-10-14 02:54:43,299 INFO L226 Difference]: Without dead ends: 32635 [2020-10-14 02:54:43,377 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:54:43,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32635 states. [2020-10-14 02:54:44,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32635 to 28444. [2020-10-14 02:54:44,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28444 states. [2020-10-14 02:54:44,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28444 states to 28444 states and 38832 transitions. [2020-10-14 02:54:44,577 INFO L78 Accepts]: Start accepts. Automaton has 28444 states and 38832 transitions. Word has length 266 [2020-10-14 02:54:44,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:54:44,578 INFO L479 AbstractCegarLoop]: Abstraction has 28444 states and 38832 transitions. [2020-10-14 02:54:44,578 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:54:44,578 INFO L276 IsEmpty]: Start isEmpty. Operand 28444 states and 38832 transitions. [2020-10-14 02:54:44,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-10-14 02:54:44,593 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:54:44,594 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:54:44,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 02:54:44,594 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:54:44,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:54:44,595 INFO L82 PathProgramCache]: Analyzing trace with hash 1175544858, now seen corresponding path program 1 times [2020-10-14 02:54:44,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:54:44,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1713357618] [2020-10-14 02:54:44,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:54:44,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:54:44,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:54:44,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:54:44,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:54:48,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:54:48,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:54:49,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:54:49,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 281 [2020-10-14 02:54:49,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 02:54:49,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-14 02:54:49,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:54:49,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:54:49,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:54:49,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-14 02:54:49,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-14 02:54:49,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:54:49,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:54:49,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:54:49,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:54:49,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:54:49,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:54:49,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:54:49,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:54:49,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:54:49,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:54:49,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:54:49,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:54:49,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:54:49,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:54:49,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:54:49,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:54:49,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:54:49,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:54:49,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 02:54:49,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:54:49,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-14 02:54:49,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:54:49,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:54:49,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:54:49,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:54:49,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 02:54:49,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:54:49,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 02:54:49,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:54:49,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:54:50,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:54:50,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 02:54:50,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:54:50,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-14 02:54:50,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:54:50,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:54:50,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:54:50,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:54:50,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 02:54:50,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:54:50,189 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 196 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:54:50,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1713357618] [2020-10-14 02:54:50,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:54:50,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:54:50,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006991187] [2020-10-14 02:54:50,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:54:50,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:54:50,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:54:50,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:54:50,193 INFO L87 Difference]: Start difference. First operand 28444 states and 38832 transitions. Second operand 7 states. [2020-10-14 02:55:05,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:55:05,745 INFO L93 Difference]: Finished difference Result 69284 states and 99428 transitions. [2020-10-14 02:55:05,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:55:05,747 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 269 [2020-10-14 02:55:05,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:55:05,913 INFO L225 Difference]: With dead ends: 69284 [2020-10-14 02:55:05,914 INFO L226 Difference]: Without dead ends: 40846 [2020-10-14 02:55:05,976 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:55:06,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40846 states. [2020-10-14 02:55:06,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40846 to 36834. [2020-10-14 02:55:06,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36834 states. [2020-10-14 02:55:08,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36834 states to 36834 states and 50006 transitions. [2020-10-14 02:55:08,196 INFO L78 Accepts]: Start accepts. Automaton has 36834 states and 50006 transitions. Word has length 269 [2020-10-14 02:55:08,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:55:08,197 INFO L479 AbstractCegarLoop]: Abstraction has 36834 states and 50006 transitions. [2020-10-14 02:55:08,197 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:55:08,197 INFO L276 IsEmpty]: Start isEmpty. Operand 36834 states and 50006 transitions. [2020-10-14 02:55:08,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2020-10-14 02:55:08,208 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:55:08,208 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:55:08,209 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 02:55:08,209 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:55:08,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:55:08,209 INFO L82 PathProgramCache]: Analyzing trace with hash -1308567453, now seen corresponding path program 1 times [2020-10-14 02:55:08,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:55:08,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1626533017] [2020-10-14 02:55:08,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:55:08,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:55:08,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:55:08,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:55:09,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:55:09,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:55:13,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:55:13,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 304 [2020-10-14 02:55:13,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 02:55:13,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-14 02:55:13,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:55:13,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:55:13,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:55:13,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-14 02:55:13,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-14 02:55:13,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:55:13,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:55:13,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:55:13,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:55:13,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:55:13,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:55:13,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:55:13,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:55:13,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:55:13,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:55:13,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:55:13,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:55:13,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:55:13,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:55:13,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:55:13,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:55:13,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:55:13,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:55:13,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 02:55:13,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:55:13,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-14 02:55:13,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:55:13,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:55:13,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:55:13,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:55:13,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 02:55:13,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:55:13,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 02:55:13,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:55:13,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:55:13,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:55:13,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-14 02:55:13,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:55:13,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-14 02:55:13,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:55:13,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:55:13,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:55:13,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:55:13,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-14 02:55:13,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:55:13,872 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 196 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:55:13,873 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1626533017] [2020-10-14 02:55:13,873 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:55:13,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:55:13,874 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585446648] [2020-10-14 02:55:13,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:55:13,875 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:55:13,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:55:13,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:55:13,875 INFO L87 Difference]: Start difference. First operand 36834 states and 50006 transitions. Second operand 7 states. [2020-10-14 02:55:37,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:55:37,659 INFO L93 Difference]: Finished difference Result 92557 states and 131606 transitions. [2020-10-14 02:55:37,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:55:37,661 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 292 [2020-10-14 02:55:37,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:55:37,946 INFO L225 Difference]: With dead ends: 92557 [2020-10-14 02:55:37,947 INFO L226 Difference]: Without dead ends: 55729 [2020-10-14 02:55:38,037 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:55:38,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55729 states. [2020-10-14 02:55:39,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55729 to 54124. [2020-10-14 02:55:39,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54124 states. [2020-10-14 02:55:39,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54124 states to 54124 states and 71974 transitions. [2020-10-14 02:55:39,289 INFO L78 Accepts]: Start accepts. Automaton has 54124 states and 71974 transitions. Word has length 292 [2020-10-14 02:55:39,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:55:39,290 INFO L479 AbstractCegarLoop]: Abstraction has 54124 states and 71974 transitions. [2020-10-14 02:55:39,290 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:55:39,290 INFO L276 IsEmpty]: Start isEmpty. Operand 54124 states and 71974 transitions. [2020-10-14 02:55:39,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2020-10-14 02:55:39,337 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:55:39,338 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:55:39,339 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 02:55:39,339 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:55:39,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:55:39,339 INFO L82 PathProgramCache]: Analyzing trace with hash 251733115, now seen corresponding path program 1 times [2020-10-14 02:55:39,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:55:39,340 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1024297182] [2020-10-14 02:55:39,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:55:39,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:55:39,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:55:39,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:55:39,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:55:39,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:55:40,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:55:41,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:55:42,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:55:44,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:55:44,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 432 [2020-10-14 02:55:44,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 02:55:44,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-14 02:55:44,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:55:44,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:55:44,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:55:44,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 240 [2020-10-14 02:55:44,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-14 02:55:44,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:55:44,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:55:44,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:55:44,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:55:44,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:55:44,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:55:44,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:55:44,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:55:44,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:55:44,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:55:44,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:55:44,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:55:44,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:55:44,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:55:44,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:55:44,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:55:44,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:55:44,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:55:44,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-14 02:55:44,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:55:44,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 02:55:44,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:55:44,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:55:44,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:55:44,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:55:44,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:55:44,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:55:44,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-14 02:55:44,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:55:44,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:55:44,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:55:44,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 02:55:44,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:55:44,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 02:55:44,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:55:44,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:55:44,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:55:44,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:55:44,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 02:55:44,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:55:44,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-10-14 02:55:44,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:55:44,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:55:44,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:55:44,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 02:55:44,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:55:44,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-14 02:55:44,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:55:44,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:55:44,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:55:44,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:55:44,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 02:55:44,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:55:45,063 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 382 proven. 2 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-10-14 02:55:45,065 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1024297182] [2020-10-14 02:55:45,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:55:45,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:55:45,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780726862] [2020-10-14 02:55:45,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:55:45,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:55:45,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:55:45,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:55:45,068 INFO L87 Difference]: Start difference. First operand 54124 states and 71974 transitions. Second operand 7 states. [2020-10-14 02:56:05,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:56:05,223 INFO L93 Difference]: Finished difference Result 115119 states and 153554 transitions. [2020-10-14 02:56:05,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:56:05,224 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 418 [2020-10-14 02:56:05,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:56:05,487 INFO L225 Difference]: With dead ends: 115119 [2020-10-14 02:56:05,488 INFO L226 Difference]: Without dead ends: 61768 [2020-10-14 02:56:05,601 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:56:05,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61768 states. [2020-10-14 02:56:06,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61768 to 60946. [2020-10-14 02:56:06,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60946 states. [2020-10-14 02:56:09,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60946 states to 60946 states and 78142 transitions. [2020-10-14 02:56:09,178 INFO L78 Accepts]: Start accepts. Automaton has 60946 states and 78142 transitions. Word has length 418 [2020-10-14 02:56:09,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:56:09,179 INFO L479 AbstractCegarLoop]: Abstraction has 60946 states and 78142 transitions. [2020-10-14 02:56:09,179 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:56:09,179 INFO L276 IsEmpty]: Start isEmpty. Operand 60946 states and 78142 transitions. [2020-10-14 02:56:09,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2020-10-14 02:56:09,245 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:56:09,246 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:56:09,246 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 02:56:09,246 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:56:09,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:56:09,247 INFO L82 PathProgramCache]: Analyzing trace with hash 408884366, now seen corresponding path program 1 times [2020-10-14 02:56:09,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:56:09,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1828763149] [2020-10-14 02:56:09,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:56:09,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:56:09,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:56:09,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:56:09,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:56:10,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:56:10,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:56:11,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:56:12,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:56:14,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:56:14,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 503 [2020-10-14 02:56:14,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 02:56:14,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 02:56:14,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:56:14,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:56:14,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:56:14,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 311 [2020-10-14 02:56:14,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-14 02:56:14,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:56:14,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:56:14,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:56:14,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:56:14,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:56:14,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:56:14,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:56:14,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 02:56:14,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:56:14,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:56:14,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:56:14,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:56:14,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:56:14,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:56:14,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:56:14,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:56:14,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:56:14,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:56:14,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-14 02:56:14,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:56:14,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 02:56:14,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:56:14,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:56:14,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:56:14,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:56:14,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:56:14,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:56:14,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-14 02:56:14,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:56:14,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:56:14,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:56:14,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 02:56:14,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:56:14,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 02:56:14,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:56:14,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:56:14,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:56:14,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:56:14,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:56:14,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:56:14,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-10-14 02:56:14,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:56:14,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:56:14,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:56:14,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 02:56:14,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:56:14,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 02:56:14,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:56:14,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:56:14,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:56:14,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:56:14,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 02:56:14,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:56:14,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-10-14 02:56:14,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:56:14,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:56:14,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:56:14,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 02:56:14,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:56:14,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-14 02:56:14,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:56:14,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:56:14,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:56:14,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:56:14,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 02:56:14,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:56:15,037 INFO L134 CoverageAnalysis]: Checked inductivity of 730 backedges. 513 proven. 2 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2020-10-14 02:56:15,037 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1828763149] [2020-10-14 02:56:15,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:56:15,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:56:15,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517717330] [2020-10-14 02:56:15,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:56:15,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:56:15,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:56:15,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:56:15,040 INFO L87 Difference]: Start difference. First operand 60946 states and 78142 transitions. Second operand 7 states. [2020-10-14 02:56:40,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:56:40,432 INFO L93 Difference]: Finished difference Result 147019 states and 216293 transitions. [2020-10-14 02:56:40,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 02:56:40,434 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 487 [2020-10-14 02:56:40,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:56:41,117 INFO L225 Difference]: With dead ends: 147019 [2020-10-14 02:56:41,117 INFO L226 Difference]: Without dead ends: 86846 [2020-10-14 02:56:41,585 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:56:41,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86846 states. [2020-10-14 02:56:43,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86846 to 72742. [2020-10-14 02:56:43,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72742 states. [2020-10-14 02:56:43,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72742 states to 72742 states and 92152 transitions. [2020-10-14 02:56:43,160 INFO L78 Accepts]: Start accepts. Automaton has 72742 states and 92152 transitions. Word has length 487 [2020-10-14 02:56:43,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:56:43,161 INFO L479 AbstractCegarLoop]: Abstraction has 72742 states and 92152 transitions. [2020-10-14 02:56:43,162 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:56:43,162 INFO L276 IsEmpty]: Start isEmpty. Operand 72742 states and 92152 transitions. [2020-10-14 02:56:43,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 555 [2020-10-14 02:56:43,261 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:56:43,261 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 02:56:43,261 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 02:56:43,262 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:56:43,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:56:43,262 INFO L82 PathProgramCache]: Analyzing trace with hash -907254545, now seen corresponding path program 1 times [2020-10-14 02:56:43,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:56:43,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1614629478] [2020-10-14 02:56:43,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:56:43,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:56:43,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:56:43,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:56:43,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:56:44,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:56:44,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:56:44,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking...