/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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/Problem17_label18.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 22:27:32,945 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 22:27:32,948 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 22:27:32,973 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 22:27:32,974 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 22:27:32,975 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 22:27:32,976 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 22:27:32,979 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 22:27:32,981 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 22:27:32,981 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 22:27:32,982 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 22:27:32,984 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 22:27:32,984 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 22:27:32,985 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 22:27:32,987 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 22:27:32,988 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 22:27:32,989 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 22:27:32,990 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 22:27:32,992 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 22:27:32,995 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 22:27:32,997 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 22:27:32,998 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 22:27:33,000 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 22:27:33,001 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 22:27:33,004 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 22:27:33,005 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 22:27:33,005 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 22:27:33,006 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 22:27:33,007 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 22:27:33,008 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 22:27:33,008 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 22:27:33,009 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 22:27:33,010 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 22:27:33,011 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 22:27:33,012 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 22:27:33,012 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 22:27:33,013 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 22:27:33,013 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 22:27:33,013 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 22:27:33,014 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 22:27:33,015 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 22:27:33,016 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 22:27:33,041 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 22:27:33,041 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 22:27:33,042 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 22:27:33,043 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 22:27:33,043 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 22:27:33,043 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 22:27:33,043 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 22:27:33,043 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 22:27:33,044 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 22:27:33,044 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 22:27:33,044 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 22:27:33,044 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 22:27:33,044 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 22:27:33,045 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 22:27:33,045 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 22:27:33,045 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 22:27:33,045 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 22:27:33,046 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 22:27:33,046 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 22:27:33,046 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 22:27:33,046 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 22:27:33,046 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 22:27:33,047 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 22:27:33,047 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 22:27:33,047 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 22:27:33,047 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 22:27:33,047 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 22:27:33,048 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 22:27:33,048 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 22:27:33,048 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 22:27:33,491 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 22:27:33,507 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 22:27:33,512 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 22:27:33,514 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 22:27:33,515 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 22:27:33,516 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label18.c [2020-10-14 22:27:33,618 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/50aa2e81b/3fa680b3c0664a42847c1bfc3f23b993/FLAGb1c3e7a10 [2020-10-14 22:27:34,459 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 22:27:34,460 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label18.c [2020-10-14 22:27:34,482 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/50aa2e81b/3fa680b3c0664a42847c1bfc3f23b993/FLAGb1c3e7a10 [2020-10-14 22:27:34,544 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/50aa2e81b/3fa680b3c0664a42847c1bfc3f23b993 [2020-10-14 22:27:34,558 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 22:27:34,561 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 22:27:34,565 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 22:27:34,565 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 22:27:34,569 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 22:27:34,571 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:27:34" (1/1) ... [2020-10-14 22:27:34,575 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dd6f99d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:27:34, skipping insertion in model container [2020-10-14 22:27:34,576 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:27:34" (1/1) ... [2020-10-14 22:27:34,588 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 22:27:34,708 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 22:27:36,067 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:27:36,077 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 22:27:36,566 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:27:36,599 INFO L208 MainTranslator]: Completed translation [2020-10-14 22:27:36,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:27:36 WrapperNode [2020-10-14 22:27:36,601 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 22:27:36,602 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 22:27:36,602 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 22:27:36,603 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 22:27:36,623 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:27:36" (1/1) ... [2020-10-14 22:27:36,625 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:27:36" (1/1) ... [2020-10-14 22:27:36,696 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:27:36" (1/1) ... [2020-10-14 22:27:36,697 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:27:36" (1/1) ... [2020-10-14 22:27:36,814 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:27:36" (1/1) ... [2020-10-14 22:27:36,857 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:27:36" (1/1) ... [2020-10-14 22:27:36,898 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:27:36" (1/1) ... [2020-10-14 22:27:36,939 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 22:27:36,940 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 22:27:36,941 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 22:27:36,941 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 22:27:36,943 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:27:36" (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 22:27:37,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 22:27:37,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 22:27:37,051 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 22:27:37,051 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 22:27:37,052 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 22:27:37,052 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 22:27:37,052 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 22:27:37,054 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 22:27:37,054 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 22:27:37,055 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 22:27:37,055 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 22:27:37,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 22:27:37,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 22:27:45,049 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 22:27:45,050 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 22:27:45,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:27:45 BoogieIcfgContainer [2020-10-14 22:27:45,072 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 22:27:45,079 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 22:27:45,079 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 22:27:45,085 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 22:27:45,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:27:34" (1/3) ... [2020-10-14 22:27:45,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48a82bc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:27:45, skipping insertion in model container [2020-10-14 22:27:45,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:27:36" (2/3) ... [2020-10-14 22:27:45,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48a82bc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:27:45, skipping insertion in model container [2020-10-14 22:27:45,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:27:45" (3/3) ... [2020-10-14 22:27:45,095 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label18.c [2020-10-14 22:27:45,114 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 22:27:45,140 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 22:27:45,160 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 22:27:45,214 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 22:27:45,215 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 22:27:45,215 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 22:27:45,216 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 22:27:45,216 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 22:27:45,216 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 22:27:45,216 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 22:27:45,217 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 22:27:45,282 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-14 22:27:45,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-14 22:27:45,303 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:27:45,305 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] [2020-10-14 22:27:45,306 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:27:45,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:27:45,318 INFO L82 PathProgramCache]: Analyzing trace with hash -1318120319, now seen corresponding path program 1 times [2020-10-14 22:27:45,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:27:45,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [367717460] [2020-10-14 22:27:45,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:27:45,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:27:45,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:46,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:27:46,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-14 22:27:46,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:27:46,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 635 [2020-10-14 22:27:46,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:27:46,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:27:46,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:27:46,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:27:46,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-14 22:27:46,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 22:27:46,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:27:46,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:27:46,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:46,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:27:46,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:27:46,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:27:46,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 22:27:46,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:27:46,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:27:46,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:27:46,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:27:46,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:27:46,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:27:46,627 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 22:27:46,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [367717460] [2020-10-14 22:27:46,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:27:46,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 22:27:46,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110933526] [2020-10-14 22:27:46,645 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 22:27:46,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:27:46,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 22:27:46,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 22:27:46,671 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2020-10-14 22:28:01,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:28:01,009 INFO L93 Difference]: Finished difference Result 1693 states and 3093 transitions. [2020-10-14 22:28:01,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:28:01,012 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2020-10-14 22:28:01,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:28:01,050 INFO L225 Difference]: With dead ends: 1693 [2020-10-14 22:28:01,050 INFO L226 Difference]: Without dead ends: 1011 [2020-10-14 22:28:01,062 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:28:01,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2020-10-14 22:28:01,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 986. [2020-10-14 22:28:01,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 986 states. [2020-10-14 22:28:01,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 986 states to 986 states and 1578 transitions. [2020-10-14 22:28:01,178 INFO L78 Accepts]: Start accepts. Automaton has 986 states and 1578 transitions. Word has length 61 [2020-10-14 22:28:01,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:28:01,179 INFO L479 AbstractCegarLoop]: Abstraction has 986 states and 1578 transitions. [2020-10-14 22:28:01,179 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 22:28:01,180 INFO L276 IsEmpty]: Start isEmpty. Operand 986 states and 1578 transitions. [2020-10-14 22:28:01,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-14 22:28:01,186 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:28:01,187 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, 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 22:28:01,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 22:28:01,187 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:28:01,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:28:01,188 INFO L82 PathProgramCache]: Analyzing trace with hash 2001166611, now seen corresponding path program 1 times [2020-10-14 22:28:01,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:28:01,188 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1551001659] [2020-10-14 22:28:01,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:28:01,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:01,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:01,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:02,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:02,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:02,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-14 22:28:02,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:28:02,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1551 [2020-10-14 22:28:02,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:02,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:02,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 22:28:02,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:28:02,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-14 22:28:02,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:28:02,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:28:02,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:02,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:02,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:02,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:28:02,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:02,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 22:28:02,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:02,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:02,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:28:02,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:28:02,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:28:02,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:28:02,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:28:02,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:02,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:03,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:03,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:03,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 22:28:03,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:28:03,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 272 [2020-10-14 22:28:03,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:03,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:03,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:28:03,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:28:03,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 22:28:03,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:28:03,334 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 22:28:03,334 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1551001659] [2020-10-14 22:28:03,334 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:28:03,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 22:28:03,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139049104] [2020-10-14 22:28:03,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 22:28:03,340 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:28:03,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 22:28:03,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 22:28:03,342 INFO L87 Difference]: Start difference. First operand 986 states and 1578 transitions. Second operand 6 states. [2020-10-14 22:28:19,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:28:19,008 INFO L93 Difference]: Finished difference Result 2464 states and 4057 transitions. [2020-10-14 22:28:19,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 22:28:19,009 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 130 [2020-10-14 22:28:19,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:28:19,019 INFO L225 Difference]: With dead ends: 2464 [2020-10-14 22:28:19,019 INFO L226 Difference]: Without dead ends: 1484 [2020-10-14 22:28:19,023 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:28:19,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1484 states. [2020-10-14 22:28:19,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1484 to 1455. [2020-10-14 22:28:19,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1455 states. [2020-10-14 22:28:19,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1455 states to 1455 states and 2047 transitions. [2020-10-14 22:28:19,081 INFO L78 Accepts]: Start accepts. Automaton has 1455 states and 2047 transitions. Word has length 130 [2020-10-14 22:28:19,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:28:19,082 INFO L479 AbstractCegarLoop]: Abstraction has 1455 states and 2047 transitions. [2020-10-14 22:28:19,082 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 22:28:19,082 INFO L276 IsEmpty]: Start isEmpty. Operand 1455 states and 2047 transitions. [2020-10-14 22:28:19,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-14 22:28:19,085 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:28:19,085 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, 1, 1, 1, 1, 1, 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 22:28:19,085 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 22:28:19,086 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:28:19,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:28:19,086 INFO L82 PathProgramCache]: Analyzing trace with hash -418800343, now seen corresponding path program 1 times [2020-10-14 22:28:19,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:28:19,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [955414623] [2020-10-14 22:28:19,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:28:19,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:19,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:19,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:20,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:20,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-14 22:28:20,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:28:20,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1037 [2020-10-14 22:28:20,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:20,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:20,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 22:28:20,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:28:20,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 22:28:20,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:28:20,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:28:20,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:20,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:20,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:20,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:28:20,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:20,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 22:28:20,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:20,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:20,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:28:20,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:28:20,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:28:20,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:28:20,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:28:20,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:20,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:20,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:20,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 22:28:20,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:20,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 240 [2020-10-14 22:28:20,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:20,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:20,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:28:20,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:28:20,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 22:28:20,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:28:20,834 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 29 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:28:20,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [955414623] [2020-10-14 22:28:20,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:28:20,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:28:20,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350982029] [2020-10-14 22:28:20,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:28:20,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:28:20,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:28:20,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:28:20,840 INFO L87 Difference]: Start difference. First operand 1455 states and 2047 transitions. Second operand 8 states. [2020-10-14 22:28:35,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:28:35,465 INFO L93 Difference]: Finished difference Result 3487 states and 5201 transitions. [2020-10-14 22:28:35,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:28:35,468 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 135 [2020-10-14 22:28:35,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:28:35,485 INFO L225 Difference]: With dead ends: 3487 [2020-10-14 22:28:35,486 INFO L226 Difference]: Without dead ends: 2423 [2020-10-14 22:28:35,491 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:28:35,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2423 states. [2020-10-14 22:28:35,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2423 to 2372. [2020-10-14 22:28:35,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2372 states. [2020-10-14 22:28:35,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2372 states to 2372 states and 3332 transitions. [2020-10-14 22:28:35,567 INFO L78 Accepts]: Start accepts. Automaton has 2372 states and 3332 transitions. Word has length 135 [2020-10-14 22:28:35,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:28:35,568 INFO L479 AbstractCegarLoop]: Abstraction has 2372 states and 3332 transitions. [2020-10-14 22:28:35,568 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:28:35,568 INFO L276 IsEmpty]: Start isEmpty. Operand 2372 states and 3332 transitions. [2020-10-14 22:28:35,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-14 22:28:35,571 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:28:35,571 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:28:35,571 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 22:28:35,572 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:28:35,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:28:35,572 INFO L82 PathProgramCache]: Analyzing trace with hash 1743746096, now seen corresponding path program 1 times [2020-10-14 22:28:35,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:28:35,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1775478352] [2020-10-14 22:28:35,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:28:35,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:35,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:36,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:37,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:37,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-14 22:28:37,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:28:37,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1500 [2020-10-14 22:28:37,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:37,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:37,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:28:37,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:28:37,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 22:28:37,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:28:37,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:28:37,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:37,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:37,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:37,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:28:37,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:37,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 22:28:37,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:37,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:37,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:28:37,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:28:37,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:28:37,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:28:37,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:28:37,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:37,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:37,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:37,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 22:28:37,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:37,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-10-14 22:28:37,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:37,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:37,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:28:37,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:28:37,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 22:28:37,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:28:37,577 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:28:37,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1775478352] [2020-10-14 22:28:37,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:28:37,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 22:28:37,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700447676] [2020-10-14 22:28:37,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:28:37,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:28:37,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:28:37,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:28:37,580 INFO L87 Difference]: Start difference. First operand 2372 states and 3332 transitions. Second operand 7 states. [2020-10-14 22:28:53,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:28:53,577 INFO L93 Difference]: Finished difference Result 6218 states and 9062 transitions. [2020-10-14 22:28:53,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:28:53,578 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 151 [2020-10-14 22:28:53,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:28:53,604 INFO L225 Difference]: With dead ends: 6218 [2020-10-14 22:28:53,604 INFO L226 Difference]: Without dead ends: 3852 [2020-10-14 22:28:53,613 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:28:53,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3852 states. [2020-10-14 22:28:53,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3852 to 3323. [2020-10-14 22:28:53,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3323 states. [2020-10-14 22:28:53,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3323 states to 3323 states and 4317 transitions. [2020-10-14 22:28:53,750 INFO L78 Accepts]: Start accepts. Automaton has 3323 states and 4317 transitions. Word has length 151 [2020-10-14 22:28:53,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:28:53,752 INFO L479 AbstractCegarLoop]: Abstraction has 3323 states and 4317 transitions. [2020-10-14 22:28:53,752 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:28:53,752 INFO L276 IsEmpty]: Start isEmpty. Operand 3323 states and 4317 transitions. [2020-10-14 22:28:53,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-14 22:28:53,758 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:28:53,758 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, 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 22:28:53,758 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 22:28:53,759 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:28:53,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:28:53,760 INFO L82 PathProgramCache]: Analyzing trace with hash -1211043875, now seen corresponding path program 1 times [2020-10-14 22:28:53,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:28:53,760 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [341230245] [2020-10-14 22:28:53,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:28:53,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:53,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:54,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:54,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:54,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-10-14 22:28:54,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:28:54,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1150 [2020-10-14 22:28:54,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:54,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:54,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:28:54,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 168 [2020-10-14 22:28:54,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 22:28:54,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:28:55,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:28:55,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:55,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:55,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:55,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:28:55,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:55,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 22:28:55,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:55,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:55,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:28:55,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:28:55,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:28:55,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:28:55,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:28:55,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:55,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:55,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:55,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:28:55,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:55,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 22:28:55,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:55,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:55,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:28:55,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:28:55,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:28:55,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 22:28:55,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:28:55,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:55,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:55,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:55,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 22:28:55,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:55,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-14 22:28:55,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:55,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:55,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:28:55,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:28:55,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 22:28:55,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:28:55,377 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 109 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-14 22:28:55,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [341230245] [2020-10-14 22:28:55,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:28:55,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 22:28:55,379 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151346482] [2020-10-14 22:28:55,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 22:28:55,380 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:28:55,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 22:28:55,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:28:55,382 INFO L87 Difference]: Start difference. First operand 3323 states and 4317 transitions. Second operand 5 states. [2020-10-14 22:29:08,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:29:08,035 INFO L93 Difference]: Finished difference Result 7101 states and 9510 transitions. [2020-10-14 22:29:08,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:29:08,039 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 217 [2020-10-14 22:29:08,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:29:08,064 INFO L225 Difference]: With dead ends: 7101 [2020-10-14 22:29:08,065 INFO L226 Difference]: Without dead ends: 3784 [2020-10-14 22:29:08,075 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 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 22:29:08,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3784 states. [2020-10-14 22:29:08,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3784 to 3760. [2020-10-14 22:29:08,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3760 states. [2020-10-14 22:29:08,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3760 states to 3760 states and 5117 transitions. [2020-10-14 22:29:08,181 INFO L78 Accepts]: Start accepts. Automaton has 3760 states and 5117 transitions. Word has length 217 [2020-10-14 22:29:08,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:29:08,182 INFO L479 AbstractCegarLoop]: Abstraction has 3760 states and 5117 transitions. [2020-10-14 22:29:08,182 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 22:29:08,182 INFO L276 IsEmpty]: Start isEmpty. Operand 3760 states and 5117 transitions. [2020-10-14 22:29:08,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-10-14 22:29:08,187 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:29:08,187 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, 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] [2020-10-14 22:29:08,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 22:29:08,188 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:29:08,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:29:08,188 INFO L82 PathProgramCache]: Analyzing trace with hash -2127962455, now seen corresponding path program 1 times [2020-10-14 22:29:08,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:29:08,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1112616922] [2020-10-14 22:29:08,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:29:08,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:29:08,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:08,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:09,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:09,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:13,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:29:13,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-10-14 22:29:13,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:29:13,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-14 22:29:13,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:29:13,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:29:13,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 22:29:13,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:29:13,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 229 [2020-10-14 22:29:13,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:29:13,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:29:13,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:29:13,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:13,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:29:13,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:29:13,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:29:13,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 22:29:13,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:29:13,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:29:13,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:29:13,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:29:13,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:29:13,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:29:13,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:29:13,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:29:13,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:13,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:29:13,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:29:13,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:29:13,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-14 22:29:13,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:29:13,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:29:13,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:29:13,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:29:13,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 22:29:13,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:29:13,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:29:13,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:29:13,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:13,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:14,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:29:14,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 22:29:14,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:29:14,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 315 [2020-10-14 22:29:14,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:29:14,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:29:14,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:29:14,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:29:14,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 22:29:14,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:29:14,215 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 74 proven. 104 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 22:29:14,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1112616922] [2020-10-14 22:29:14,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:29:14,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 22:29:14,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931356436] [2020-10-14 22:29:14,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 22:29:14,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:29:14,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 22:29:14,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-14 22:29:14,220 INFO L87 Difference]: Start difference. First operand 3760 states and 5117 transitions. Second operand 9 states. [2020-10-14 22:29:46,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:29:46,581 INFO L93 Difference]: Finished difference Result 12344 states and 17812 transitions. [2020-10-14 22:29:46,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 22:29:46,584 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 223 [2020-10-14 22:29:46,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:29:46,634 INFO L225 Difference]: With dead ends: 12344 [2020-10-14 22:29:46,635 INFO L226 Difference]: Without dead ends: 8133 [2020-10-14 22:29:46,649 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2020-10-14 22:29:46,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8133 states. [2020-10-14 22:29:46,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8133 to 7497. [2020-10-14 22:29:46,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7497 states. [2020-10-14 22:29:46,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7497 states to 7497 states and 9881 transitions. [2020-10-14 22:29:46,918 INFO L78 Accepts]: Start accepts. Automaton has 7497 states and 9881 transitions. Word has length 223 [2020-10-14 22:29:46,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:29:46,918 INFO L479 AbstractCegarLoop]: Abstraction has 7497 states and 9881 transitions. [2020-10-14 22:29:46,919 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 22:29:46,921 INFO L276 IsEmpty]: Start isEmpty. Operand 7497 states and 9881 transitions. [2020-10-14 22:29:46,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2020-10-14 22:29:46,928 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:29:46,929 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:29:46,929 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 22:29:46,929 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:29:46,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:29:46,930 INFO L82 PathProgramCache]: Analyzing trace with hash 402367107, now seen corresponding path program 1 times [2020-10-14 22:29:46,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:29:46,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [76920952] [2020-10-14 22:29:46,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:29:46,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:29:47,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:47,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:47,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:50,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:52,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:29:52,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 306 [2020-10-14 22:29:52,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:29:52,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-14 22:29:52,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:29:52,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:29:52,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:29:52,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:29:52,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 22:29:52,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:29:52,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:29:52,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:29:52,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:52,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:29:52,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:29:52,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:29:52,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:29:52,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:29:52,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:29:52,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:29:52,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:29:52,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:29:52,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:29:52,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:29:52,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:29:52,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:52,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:29:52,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:29:52,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:29:52,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-14 22:29:52,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:29:52,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:29:52,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:29:52,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:29:52,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:29:52,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:29:52,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:29:52,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:29:52,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:52,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:29:52,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 22:29:52,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:29:52,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-14 22:29:52,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:29:52,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:29:52,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:29:52,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:29:52,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 22:29:52,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:29:52,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-10-14 22:29:52,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:29:52,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:52,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:29:52,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 22:29:52,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:29:52,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 22:29:52,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:29:52,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:29:52,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:29:52,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-14 22:29:52,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:29:52,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:29:53,005 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 232 proven. 68 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-14 22:29:53,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [76920952] [2020-10-14 22:29:53,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:29:53,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 22:29:53,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20717422] [2020-10-14 22:29:53,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:29:53,010 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:29:53,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:29:53,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:29:53,011 INFO L87 Difference]: Start difference. First operand 7497 states and 9881 transitions. Second operand 8 states. [2020-10-14 22:30:13,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:30:13,217 INFO L93 Difference]: Finished difference Result 18664 states and 25694 transitions. [2020-10-14 22:30:13,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 22:30:13,220 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 292 [2020-10-14 22:30:13,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:30:13,275 INFO L225 Difference]: With dead ends: 18664 [2020-10-14 22:30:13,275 INFO L226 Difference]: Without dead ends: 11173 [2020-10-14 22:30:13,295 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-10-14 22:30:13,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11173 states. [2020-10-14 22:30:13,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11173 to 11137. [2020-10-14 22:30:13,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11137 states. [2020-10-14 22:30:13,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11137 states to 11137 states and 14730 transitions. [2020-10-14 22:30:13,565 INFO L78 Accepts]: Start accepts. Automaton has 11137 states and 14730 transitions. Word has length 292 [2020-10-14 22:30:13,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:30:13,565 INFO L479 AbstractCegarLoop]: Abstraction has 11137 states and 14730 transitions. [2020-10-14 22:30:13,566 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:30:13,566 INFO L276 IsEmpty]: Start isEmpty. Operand 11137 states and 14730 transitions. [2020-10-14 22:30:13,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-10-14 22:30:13,574 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:30:13,575 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, 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, 1, 1, 1, 1, 1, 1, 1, 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 22:30:13,575 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 22:30:13,576 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:30:13,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:30:13,576 INFO L82 PathProgramCache]: Analyzing trace with hash -675501712, now seen corresponding path program 1 times [2020-10-14 22:30:13,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:30:13,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [581233622] [2020-10-14 22:30:13,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:30:13,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:13,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:13,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:14,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:16,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:18,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:18,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 344 [2020-10-14 22:30:18,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:30:18,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 22:30:18,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:18,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:18,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:30:18,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:30:18,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 22:30:18,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:30:18,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:30:18,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:18,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:18,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:18,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:30:18,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:30:18,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:30:18,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:18,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:18,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:30:18,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:30:18,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:30:18,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:30:18,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:30:18,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:18,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:18,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:18,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:30:18,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:30:18,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-14 22:30:18,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:18,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:18,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:30:18,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:30:18,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:30:18,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:30:19,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:30:19,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:19,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:19,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:19,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 22:30:19,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:30:19,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 245 [2020-10-14 22:30:19,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:19,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:19,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:30:19,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:30:19,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-14 22:30:19,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:30:19,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-10-14 22:30:19,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:19,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:19,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:19,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 22:30:19,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:30:19,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-14 22:30:19,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:19,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:19,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:30:19,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-14 22:30:19,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:30:19,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:30:19,780 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 250 proven. 74 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-14 22:30:19,780 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [581233622] [2020-10-14 22:30:19,781 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:30:19,781 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:30:19,781 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382344767] [2020-10-14 22:30:19,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:30:19,782 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:30:19,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:30:19,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:30:19,783 INFO L87 Difference]: Start difference. First operand 11137 states and 14730 transitions. Second operand 7 states. [2020-10-14 22:30:45,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:30:45,548 INFO L93 Difference]: Finished difference Result 28516 states and 39212 transitions. [2020-10-14 22:30:45,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:30:45,553 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 330 [2020-10-14 22:30:45,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:30:45,637 INFO L225 Difference]: With dead ends: 28516 [2020-10-14 22:30:45,638 INFO L226 Difference]: Without dead ends: 16450 [2020-10-14 22:30:45,676 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:30:45,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16450 states. [2020-10-14 22:30:46,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16450 to 15875. [2020-10-14 22:30:46,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15875 states. [2020-10-14 22:30:46,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15875 states to 15875 states and 20574 transitions. [2020-10-14 22:30:46,225 INFO L78 Accepts]: Start accepts. Automaton has 15875 states and 20574 transitions. Word has length 330 [2020-10-14 22:30:46,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:30:46,226 INFO L479 AbstractCegarLoop]: Abstraction has 15875 states and 20574 transitions. [2020-10-14 22:30:46,226 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:30:46,226 INFO L276 IsEmpty]: Start isEmpty. Operand 15875 states and 20574 transitions. [2020-10-14 22:30:46,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-10-14 22:30:46,235 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:30:46,236 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:30:46,236 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 22:30:46,236 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:30:46,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:30:46,237 INFO L82 PathProgramCache]: Analyzing trace with hash 566305740, now seen corresponding path program 1 times [2020-10-14 22:30:46,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:30:46,238 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1243794169] [2020-10-14 22:30:46,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:30:46,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:46,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:46,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:47,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:49,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:51,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:51,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:51,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 346 [2020-10-14 22:30:51,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 22:30:51,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-14 22:30:51,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:51,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:51,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:30:51,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:30:51,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 22:30:51,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:30:51,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:30:51,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:51,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:51,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:51,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:30:51,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:30:51,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 22:30:51,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:51,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:51,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:30:51,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:30:51,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:30:51,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 22:30:51,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:30:51,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:51,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:51,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:51,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:30:51,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:30:51,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-14 22:30:51,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:51,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:51,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:30:51,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:30:51,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:30:51,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:30:51,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:30:51,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:51,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:51,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:51,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 22:30:51,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:30:51,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-10-14 22:30:51,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:51,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:51,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:30:51,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:30:51,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 22:30:51,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:30:52,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-14 22:30:52,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:52,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:52,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:52,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 22:30:52,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:30:52,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 22:30:52,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:52,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:52,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:30:52,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-14 22:30:52,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:30:52,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:30:52,448 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 250 proven. 74 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-14 22:30:52,449 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1243794169] [2020-10-14 22:30:52,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:30:52,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:30:52,450 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656624176] [2020-10-14 22:30:52,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:30:52,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:30:52,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:30:52,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:30:52,452 INFO L87 Difference]: Start difference. First operand 15875 states and 20574 transitions. Second operand 7 states. [2020-10-14 22:31:17,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:31:17,226 INFO L93 Difference]: Finished difference Result 34042 states and 43923 transitions. [2020-10-14 22:31:17,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:31:17,232 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 332 [2020-10-14 22:31:17,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:31:17,326 INFO L225 Difference]: With dead ends: 34042 [2020-10-14 22:31:17,326 INFO L226 Difference]: Without dead ends: 18173 [2020-10-14 22:31:17,373 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 22:31:17,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18173 states. [2020-10-14 22:31:17,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18173 to 18085. [2020-10-14 22:31:17,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18085 states. [2020-10-14 22:31:17,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18085 states to 18085 states and 23102 transitions. [2020-10-14 22:31:17,958 INFO L78 Accepts]: Start accepts. Automaton has 18085 states and 23102 transitions. Word has length 332 [2020-10-14 22:31:17,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:31:17,959 INFO L479 AbstractCegarLoop]: Abstraction has 18085 states and 23102 transitions. [2020-10-14 22:31:17,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:31:17,959 INFO L276 IsEmpty]: Start isEmpty. Operand 18085 states and 23102 transitions. [2020-10-14 22:31:17,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2020-10-14 22:31:17,971 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:31:17,972 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:31:17,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 22:31:17,972 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:31:17,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:31:17,973 INFO L82 PathProgramCache]: Analyzing trace with hash -776586588, now seen corresponding path program 1 times [2020-10-14 22:31:17,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:31:17,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [759930388] [2020-10-14 22:31:17,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:31:18,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:31:18,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:18,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:18,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:21,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:23,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:31:23,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 366 [2020-10-14 22:31:23,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:31:23,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 22:31:23,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:31:23,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:31:23,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 22:31:23,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:31:23,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 224 [2020-10-14 22:31:23,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:31:23,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:31:23,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:31:23,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:23,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:31:23,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:31:23,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:31:23,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 22:31:23,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:31:23,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:31:23,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:31:23,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:31:23,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:31:23,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:31:23,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:31:23,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:31:23,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:23,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:31:23,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:31:23,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:31:23,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-14 22:31:23,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:31:23,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:31:23,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:31:23,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:31:23,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 22:31:23,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:31:23,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95