/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/Problem12_label00.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 21:05:29,913 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 21:05:29,915 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 21:05:29,948 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 21:05:29,948 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 21:05:29,950 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 21:05:29,951 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 21:05:29,954 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 21:05:29,961 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 21:05:29,964 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 21:05:29,965 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 21:05:29,966 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 21:05:29,969 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 21:05:29,971 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 21:05:29,972 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 21:05:29,975 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 21:05:29,976 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 21:05:29,977 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 21:05:29,981 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 21:05:29,985 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 21:05:29,989 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 21:05:29,990 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 21:05:29,992 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 21:05:29,992 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 21:05:29,997 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 21:05:29,998 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 21:05:29,998 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 21:05:30,000 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 21:05:30,001 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 21:05:30,002 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 21:05:30,002 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 21:05:30,003 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 21:05:30,005 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 21:05:30,006 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 21:05:30,007 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 21:05:30,007 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 21:05:30,008 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 21:05:30,008 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 21:05:30,008 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 21:05:30,009 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 21:05:30,011 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 21:05:30,011 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 21:05:30,052 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 21:05:30,052 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 21:05:30,054 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 21:05:30,055 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 21:05:30,055 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 21:05:30,055 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 21:05:30,055 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 21:05:30,056 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 21:05:30,056 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 21:05:30,056 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 21:05:30,057 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 21:05:30,057 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 21:05:30,057 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 21:05:30,058 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 21:05:30,058 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 21:05:30,058 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 21:05:30,058 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 21:05:30,059 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 21:05:30,059 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 21:05:30,059 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 21:05:30,059 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 21:05:30,059 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:05:30,060 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 21:05:30,060 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 21:05:30,060 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 21:05:30,060 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 21:05:30,060 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 21:05:30,060 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 21:05:30,061 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 21:05:30,061 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 21:05:30,405 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 21:05:30,418 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 21:05:30,422 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 21:05:30,424 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 21:05:30,424 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 21:05:30,425 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label00.c [2020-10-14 21:05:30,485 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a297388c3/b1b2c4fe53a546fe9230aa83bcc92bd2/FLAG38546a336 [2020-10-14 21:05:31,249 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 21:05:31,250 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label00.c [2020-10-14 21:05:31,296 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a297388c3/b1b2c4fe53a546fe9230aa83bcc92bd2/FLAG38546a336 [2020-10-14 21:05:31,335 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a297388c3/b1b2c4fe53a546fe9230aa83bcc92bd2 [2020-10-14 21:05:31,346 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 21:05:31,349 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 21:05:31,352 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 21:05:31,352 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 21:05:31,356 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 21:05:31,357 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:05:31" (1/1) ... [2020-10-14 21:05:31,361 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7673bb3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:05:31, skipping insertion in model container [2020-10-14 21:05:31,362 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:05:31" (1/1) ... [2020-10-14 21:05:31,373 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 21:05:31,538 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 21:05:33,068 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:05:33,077 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 21:05:33,775 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:05:33,803 INFO L208 MainTranslator]: Completed translation [2020-10-14 21:05:33,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:05:33 WrapperNode [2020-10-14 21:05:33,803 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 21:05:33,804 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 21:05:33,805 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 21:05:33,805 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 21:05:33,816 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:05:33" (1/1) ... [2020-10-14 21:05:33,816 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:05:33" (1/1) ... [2020-10-14 21:05:33,873 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:05:33" (1/1) ... [2020-10-14 21:05:33,874 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:05:33" (1/1) ... [2020-10-14 21:05:33,988 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:05:33" (1/1) ... [2020-10-14 21:05:34,014 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:05:33" (1/1) ... [2020-10-14 21:05:34,055 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:05:33" (1/1) ... [2020-10-14 21:05:34,087 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 21:05:34,088 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 21:05:34,088 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 21:05:34,088 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 21:05:34,090 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:05:33" (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 21:05:34,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 21:05:34,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 21:05:34,169 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 21:05:34,169 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 21:05:34,169 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 21:05:34,170 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 21:05:34,170 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 21:05:34,170 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 21:05:34,170 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 21:05:34,170 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 21:05:34,170 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 21:05:34,171 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 21:05:34,171 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 21:05:34,171 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 21:05:34,171 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 21:05:34,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 21:05:34,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 21:05:39,117 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 21:05:39,117 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 21:05:39,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:05:39 BoogieIcfgContainer [2020-10-14 21:05:39,136 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 21:05:39,138 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 21:05:39,138 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 21:05:39,141 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 21:05:39,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:05:31" (1/3) ... [2020-10-14 21:05:39,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56c492fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:05:39, skipping insertion in model container [2020-10-14 21:05:39,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:05:33" (2/3) ... [2020-10-14 21:05:39,144 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56c492fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:05:39, skipping insertion in model container [2020-10-14 21:05:39,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:05:39" (3/3) ... [2020-10-14 21:05:39,147 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label00.c [2020-10-14 21:05:39,158 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 21:05:39,170 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 21:05:39,183 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 21:05:39,216 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 21:05:39,217 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 21:05:39,217 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 21:05:39,217 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 21:05:39,217 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 21:05:39,217 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 21:05:39,217 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 21:05:39,217 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 21:05:39,265 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-14 21:05:39,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-14 21:05:39,277 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:05:39,278 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] [2020-10-14 21:05:39,278 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:05:39,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:05:39,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1784275510, now seen corresponding path program 1 times [2020-10-14 21:05:39,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:05:39,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [300723659] [2020-10-14 21:05:39,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:05:39,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:39,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:39,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:05:39,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 21:05:39,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:05:39,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 434 [2020-10-14 21:05:39,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:05:39,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:05:39,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:05:39,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:05:39,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 21:05:39,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 21:05:39,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:05:39,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:39,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:39,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:05:39,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:05:39,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:05:39,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 21:05:39,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:05:39,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:05:39,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:05:39,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:05:39,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:05:39,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:05:39,965 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 21:05:39,966 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [300723659] [2020-10-14 21:05:39,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:05:39,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 21:05:39,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452268176] [2020-10-14 21:05:39,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 21:05:39,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:05:39,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 21:05:39,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 21:05:39,993 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 4 states. [2020-10-14 21:05:48,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:05:48,490 INFO L93 Difference]: Finished difference Result 2471 states and 4736 transitions. [2020-10-14 21:05:48,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:05:48,493 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-10-14 21:05:48,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:05:48,525 INFO L225 Difference]: With dead ends: 2471 [2020-10-14 21:05:48,526 INFO L226 Difference]: Without dead ends: 1568 [2020-10-14 21:05:48,536 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:05:48,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-14 21:05:48,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553. [2020-10-14 21:05:48,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1553 states. [2020-10-14 21:05:48,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2521 transitions. [2020-10-14 21:05:48,682 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2521 transitions. Word has length 21 [2020-10-14 21:05:48,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:05:48,683 INFO L479 AbstractCegarLoop]: Abstraction has 1553 states and 2521 transitions. [2020-10-14 21:05:48,683 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 21:05:48,683 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2521 transitions. [2020-10-14 21:05:48,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-14 21:05:48,691 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:05:48,692 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:05:48,692 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 21:05:48,692 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:05:48,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:05:48,693 INFO L82 PathProgramCache]: Analyzing trace with hash 547210915, now seen corresponding path program 1 times [2020-10-14 21:05:48,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:05:48,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1152317298] [2020-10-14 21:05:48,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:05:48,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:48,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:49,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:05:49,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-14 21:05:49,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:05:49,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 308 [2020-10-14 21:05:49,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:05:49,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:05:49,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:05:49,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 21:05:49,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 21:05:49,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:05:49,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:05:49,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:49,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:49,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:05:49,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:05:49,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:05:49,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 21:05:49,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:05:49,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:05:49,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:05:49,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:05:49,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:05:49,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:05:49,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:05:49,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:49,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:49,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:05:49,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:05:49,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:05:49,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-14 21:05:49,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:05:49,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:05:49,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:05:49,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:05:49,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 21:05:49,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:05:49,414 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:05:49,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1152317298] [2020-10-14 21:05:49,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:05:49,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:05:49,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960255360] [2020-10-14 21:05:49,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:05:49,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:05:49,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:05:49,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:05:49,418 INFO L87 Difference]: Start difference. First operand 1553 states and 2521 transitions. Second operand 5 states. [2020-10-14 21:05:58,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:05:58,332 INFO L93 Difference]: Finished difference Result 4680 states and 7660 transitions. [2020-10-14 21:05:58,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:05:58,333 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 96 [2020-10-14 21:05:58,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:05:58,357 INFO L225 Difference]: With dead ends: 4680 [2020-10-14 21:05:58,358 INFO L226 Difference]: Without dead ends: 3133 [2020-10-14 21:05:58,363 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:05:58,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3133 states. [2020-10-14 21:05:58,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3133 to 3119. [2020-10-14 21:05:58,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3119 states. [2020-10-14 21:05:58,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3119 states to 3119 states and 4785 transitions. [2020-10-14 21:05:58,511 INFO L78 Accepts]: Start accepts. Automaton has 3119 states and 4785 transitions. Word has length 96 [2020-10-14 21:05:58,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:05:58,512 INFO L479 AbstractCegarLoop]: Abstraction has 3119 states and 4785 transitions. [2020-10-14 21:05:58,512 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:05:58,512 INFO L276 IsEmpty]: Start isEmpty. Operand 3119 states and 4785 transitions. [2020-10-14 21:05:58,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-14 21:05:58,524 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:05:58,524 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:05:58,524 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 21:05:58,525 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:05:58,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:05:58,525 INFO L82 PathProgramCache]: Analyzing trace with hash 2073645474, now seen corresponding path program 1 times [2020-10-14 21:05:58,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:05:58,526 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [824241158] [2020-10-14 21:05:58,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:05:58,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:58,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:58,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:59,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:59,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:05:59,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 21:05:59,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:05:59,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1409 [2020-10-14 21:05:59,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:05:59,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:05:59,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:05:59,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:05:59,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 21:05:59,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:06:00,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:06:00,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:00,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:00,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:00,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:06:00,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:06:00,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 21:06:00,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:00,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:00,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:06:00,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:06:00,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:06:00,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:06:00,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:06:00,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:00,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:00,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:00,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 21:06:00,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:06:00,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-14 21:06:00,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:00,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:00,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:06:00,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:06:00,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 21:06:00,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:06:00,351 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:06:00,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [824241158] [2020-10-14 21:06:00,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:06:00,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:06:00,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866651503] [2020-10-14 21:06:00,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:06:00,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:06:00,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:06:00,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:06:00,355 INFO L87 Difference]: Start difference. First operand 3119 states and 4785 transitions. Second operand 7 states. [2020-10-14 21:06:11,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:06:11,636 INFO L93 Difference]: Finished difference Result 9465 states and 14684 transitions. [2020-10-14 21:06:11,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:06:11,638 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 99 [2020-10-14 21:06:11,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:06:11,682 INFO L225 Difference]: With dead ends: 9465 [2020-10-14 21:06:11,682 INFO L226 Difference]: Without dead ends: 6352 [2020-10-14 21:06:11,692 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 21:06:11,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6352 states. [2020-10-14 21:06:11,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6352 to 6278. [2020-10-14 21:06:11,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6278 states. [2020-10-14 21:06:11,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6278 states to 6278 states and 8654 transitions. [2020-10-14 21:06:11,923 INFO L78 Accepts]: Start accepts. Automaton has 6278 states and 8654 transitions. Word has length 99 [2020-10-14 21:06:11,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:06:11,924 INFO L479 AbstractCegarLoop]: Abstraction has 6278 states and 8654 transitions. [2020-10-14 21:06:11,924 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:06:11,929 INFO L276 IsEmpty]: Start isEmpty. Operand 6278 states and 8654 transitions. [2020-10-14 21:06:11,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-14 21:06:11,933 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:06:11,933 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:06:11,934 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 21:06:11,934 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:06:11,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:06:11,934 INFO L82 PathProgramCache]: Analyzing trace with hash -219659413, now seen corresponding path program 1 times [2020-10-14 21:06:11,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:06:11,935 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [750204521] [2020-10-14 21:06:11,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:06:11,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:11,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:12,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:12,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:12,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:12,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 21:06:12,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:06:12,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 846 [2020-10-14 21:06:12,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:12,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:12,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:06:12,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:06:12,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-14 21:06:12,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:06:12,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:06:12,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:12,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:12,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:12,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:06:12,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:06:12,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 21:06:12,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:12,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:12,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:06:12,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:06:12,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:06:12,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:06:12,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:06:12,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:12,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:13,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:13,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 21:06:13,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:06:13,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-14 21:06:13,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:13,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:13,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:06:13,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:06:13,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 21:06:13,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:06:13,296 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:06:13,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [750204521] [2020-10-14 21:06:13,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:06:13,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:06:13,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395736590] [2020-10-14 21:06:13,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:06:13,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:06:13,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:06:13,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:06:13,307 INFO L87 Difference]: Start difference. First operand 6278 states and 8654 transitions. Second operand 7 states. [2020-10-14 21:06:26,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:06:26,901 INFO L93 Difference]: Finished difference Result 17525 states and 24923 transitions. [2020-10-14 21:06:26,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:06:26,902 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 100 [2020-10-14 21:06:26,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:06:26,958 INFO L225 Difference]: With dead ends: 17525 [2020-10-14 21:06:26,958 INFO L226 Difference]: Without dead ends: 11253 [2020-10-14 21:06:26,974 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 21:06:26,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11253 states. [2020-10-14 21:06:27,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11253 to 11072. [2020-10-14 21:06:27,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11072 states. [2020-10-14 21:06:27,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11072 states to 11072 states and 14811 transitions. [2020-10-14 21:06:27,299 INFO L78 Accepts]: Start accepts. Automaton has 11072 states and 14811 transitions. Word has length 100 [2020-10-14 21:06:27,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:06:27,301 INFO L479 AbstractCegarLoop]: Abstraction has 11072 states and 14811 transitions. [2020-10-14 21:06:27,301 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:06:27,301 INFO L276 IsEmpty]: Start isEmpty. Operand 11072 states and 14811 transitions. [2020-10-14 21:06:27,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-14 21:06:27,309 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:06:27,310 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:06:27,310 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 21:06:27,310 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:06:27,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:06:27,311 INFO L82 PathProgramCache]: Analyzing trace with hash 1170373647, now seen corresponding path program 1 times [2020-10-14 21:06:27,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:06:27,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [890518671] [2020-10-14 21:06:27,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:06:27,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:27,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:27,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:28,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:28,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 21:06:28,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:06:28,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 926 [2020-10-14 21:06:28,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:28,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:28,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:06:28,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:06:28,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-14 21:06:28,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:06:28,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:06:28,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:28,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:28,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:28,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:06:28,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:06:28,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 21:06:28,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:28,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:28,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:06:28,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:06:28,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:06:28,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:06:28,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:06:28,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:28,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:28,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:28,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 21:06:28,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:06:28,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-10-14 21:06:28,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:28,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:28,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:06:28,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:06:28,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 21:06:28,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:06:28,755 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:06:28,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [890518671] [2020-10-14 21:06:28,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:06:28,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:06:28,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672903439] [2020-10-14 21:06:28,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:06:28,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:06:28,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:06:28,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:06:28,759 INFO L87 Difference]: Start difference. First operand 11072 states and 14811 transitions. Second operand 7 states. [2020-10-14 21:06:41,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:06:41,131 INFO L93 Difference]: Finished difference Result 20935 states and 28705 transitions. [2020-10-14 21:06:41,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 21:06:41,133 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 134 [2020-10-14 21:06:41,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:06:41,189 INFO L225 Difference]: With dead ends: 20935 [2020-10-14 21:06:41,190 INFO L226 Difference]: Without dead ends: 11411 [2020-10-14 21:06:41,212 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:06:41,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11411 states. [2020-10-14 21:06:41,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11411 to 11274. [2020-10-14 21:06:41,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11274 states. [2020-10-14 21:06:41,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11274 states to 11274 states and 14902 transitions. [2020-10-14 21:06:41,492 INFO L78 Accepts]: Start accepts. Automaton has 11274 states and 14902 transitions. Word has length 134 [2020-10-14 21:06:41,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:06:41,492 INFO L479 AbstractCegarLoop]: Abstraction has 11274 states and 14902 transitions. [2020-10-14 21:06:41,492 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:06:41,493 INFO L276 IsEmpty]: Start isEmpty. Operand 11274 states and 14902 transitions. [2020-10-14 21:06:41,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-14 21:06:41,495 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:06:41,496 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:06:41,496 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 21:06:41,496 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:06:41,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:06:41,497 INFO L82 PathProgramCache]: Analyzing trace with hash -617353586, now seen corresponding path program 1 times [2020-10-14 21:06:41,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:06:41,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1791295688] [2020-10-14 21:06:41,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:06:41,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:41,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:41,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:43,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:43,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-14 21:06:43,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:06:43,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1496 [2020-10-14 21:06:43,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:43,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:43,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:06:43,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:06:43,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-14 21:06:43,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:06:43,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:06:43,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:43,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:43,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:43,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:06:43,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:06:43,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 21:06:43,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:43,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:43,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:06:43,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:06:43,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:06:43,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:06:43,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:06:43,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:43,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:43,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:43,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-14 21:06:43,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:06:43,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-10-14 21:06:43,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:43,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:43,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:06:43,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:06:43,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-14 21:06:43,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:06:43,758 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:06:43,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1791295688] [2020-10-14 21:06:43,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:06:43,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:06:43,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628473320] [2020-10-14 21:06:43,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:06:43,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:06:43,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:06:43,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:06:43,762 INFO L87 Difference]: Start difference. First operand 11274 states and 14902 transitions. Second operand 7 states. [2020-10-14 21:06:43,883 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2020-10-14 21:06:55,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:06:55,117 INFO L93 Difference]: Finished difference Result 18537 states and 25969 transitions. [2020-10-14 21:06:55,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 21:06:55,120 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 169 [2020-10-14 21:06:55,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:06:55,163 INFO L225 Difference]: With dead ends: 18537 [2020-10-14 21:06:55,164 INFO L226 Difference]: Without dead ends: 11958 [2020-10-14 21:06:55,180 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-14 21:06:55,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11958 states. [2020-10-14 21:06:55,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11958 to 11527. [2020-10-14 21:06:55,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11527 states. [2020-10-14 21:06:55,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11527 states to 11527 states and 15364 transitions. [2020-10-14 21:06:55,542 INFO L78 Accepts]: Start accepts. Automaton has 11527 states and 15364 transitions. Word has length 169 [2020-10-14 21:06:55,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:06:55,542 INFO L479 AbstractCegarLoop]: Abstraction has 11527 states and 15364 transitions. [2020-10-14 21:06:55,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:06:55,543 INFO L276 IsEmpty]: Start isEmpty. Operand 11527 states and 15364 transitions. [2020-10-14 21:06:55,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-14 21:06:55,545 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:06:55,545 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:06:55,546 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 21:06:55,546 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:06:55,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:06:55,546 INFO L82 PathProgramCache]: Analyzing trace with hash 1056138966, now seen corresponding path program 1 times [2020-10-14 21:06:55,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:06:55,547 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1000355644] [2020-10-14 21:06:55,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:06:55,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:55,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:55,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:56,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:56,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-14 21:06:56,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:06:56,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1166 [2020-10-14 21:06:56,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:56,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:56,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:06:56,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:06:56,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-14 21:06:56,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:06:56,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:06:56,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:56,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:56,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:56,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:06:56,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:06:56,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 21:06:56,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:56,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:56,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:06:56,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:06:56,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:06:56,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:06:56,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:06:56,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:56,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:57,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:57,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-14 21:06:57,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:06:57,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-10-14 21:06:57,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:57,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:57,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:06:57,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:06:57,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-14 21:06:57,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:06:57,262 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:06:57,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1000355644] [2020-10-14 21:06:57,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:06:57,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:06:57,264 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449610114] [2020-10-14 21:06:57,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:06:57,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:06:57,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:06:57,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:06:57,265 INFO L87 Difference]: Start difference. First operand 11527 states and 15364 transitions. Second operand 7 states. [2020-10-14 21:07:11,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:07:11,140 INFO L93 Difference]: Finished difference Result 32749 states and 47718 transitions. [2020-10-14 21:07:11,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:07:11,143 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 173 [2020-10-14 21:07:11,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:07:11,220 INFO L225 Difference]: With dead ends: 32749 [2020-10-14 21:07:11,221 INFO L226 Difference]: Without dead ends: 21228 [2020-10-14 21:07:11,256 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:07:11,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21228 states. [2020-10-14 21:07:11,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21228 to 19054. [2020-10-14 21:07:11,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19054 states. [2020-10-14 21:07:11,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19054 states to 19054 states and 24279 transitions. [2020-10-14 21:07:11,883 INFO L78 Accepts]: Start accepts. Automaton has 19054 states and 24279 transitions. Word has length 173 [2020-10-14 21:07:11,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:07:11,884 INFO L479 AbstractCegarLoop]: Abstraction has 19054 states and 24279 transitions. [2020-10-14 21:07:11,884 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:07:11,885 INFO L276 IsEmpty]: Start isEmpty. Operand 19054 states and 24279 transitions. [2020-10-14 21:07:11,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-10-14 21:07:11,888 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:07:11,888 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:07:11,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 21:07:11,889 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:07:11,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:07:11,889 INFO L82 PathProgramCache]: Analyzing trace with hash -1806177194, now seen corresponding path program 1 times [2020-10-14 21:07:11,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:07:11,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1585445238] [2020-10-14 21:07:11,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:07:11,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:11,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:12,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:12,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:12,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:12,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-10-14 21:07:12,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:07:12,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1038 [2020-10-14 21:07:12,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:12,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:12,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:07:12,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 21:07:12,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-14 21:07:12,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:07:13,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:07:13,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:13,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:13,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:13,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:07:13,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:13,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:07:13,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:13,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:13,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:07:13,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:07:13,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:07:13,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:07:13,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:07:13,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:13,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:13,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:13,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:07:13,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:13,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-14 21:07:13,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:13,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:13,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:07:13,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:07:13,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 21:07:13,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:07:13,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 21:07:13,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:13,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:13,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:13,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 21:07:13,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:13,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-14 21:07:13,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:13,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:13,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:07:13,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:07:13,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 21:07:13,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:07:13,525 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 100 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:07:13,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1585445238] [2020-10-14 21:07:13,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:07:13,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:07:13,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89756796] [2020-10-14 21:07:13,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:07:13,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:07:13,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:07:13,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:07:13,528 INFO L87 Difference]: Start difference. First operand 19054 states and 24279 transitions. Second operand 7 states. [2020-10-14 21:07:29,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:07:29,365 INFO L93 Difference]: Finished difference Result 45984 states and 62656 transitions. [2020-10-14 21:07:29,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:07:29,368 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 209 [2020-10-14 21:07:29,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:07:29,463 INFO L225 Difference]: With dead ends: 45984 [2020-10-14 21:07:29,464 INFO L226 Difference]: Without dead ends: 27705 [2020-10-14 21:07:29,500 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:07:29,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27705 states. [2020-10-14 21:07:29,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27705 to 27352. [2020-10-14 21:07:29,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27352 states. [2020-10-14 21:07:30,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27352 states to 27352 states and 34888 transitions. [2020-10-14 21:07:30,047 INFO L78 Accepts]: Start accepts. Automaton has 27352 states and 34888 transitions. Word has length 209 [2020-10-14 21:07:30,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:07:30,047 INFO L479 AbstractCegarLoop]: Abstraction has 27352 states and 34888 transitions. [2020-10-14 21:07:30,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:07:30,048 INFO L276 IsEmpty]: Start isEmpty. Operand 27352 states and 34888 transitions. [2020-10-14 21:07:30,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-10-14 21:07:30,051 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:07:30,051 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:07:30,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 21:07:30,052 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:07:30,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:07:30,052 INFO L82 PathProgramCache]: Analyzing trace with hash 1652566583, now seen corresponding path program 1 times [2020-10-14 21:07:30,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:07:30,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [755341306] [2020-10-14 21:07:30,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:07:30,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:30,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:30,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:31,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:32,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:32,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-10-14 21:07:32,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:07:32,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2057 [2020-10-14 21:07:32,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:32,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:32,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:07:32,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 21:07:32,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-14 21:07:32,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:07:32,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:07:32,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:32,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:32,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:32,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:07:32,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:32,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:07:32,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:32,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:32,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:07:32,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:07:32,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:07:32,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:07:32,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:07:32,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:32,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:32,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:32,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:07:32,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:32,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-14 21:07:32,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:32,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:32,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:07:32,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:07:32,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 21:07:32,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:07:32,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 21:07:32,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:32,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:32,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:32,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-14 21:07:32,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:32,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 248 [2020-10-14 21:07:32,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:32,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:32,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:07:32,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:07:32,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 21:07:32,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:07:32,890 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 100 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:07:32,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [755341306] [2020-10-14 21:07:32,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:07:32,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:07:32,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903056985] [2020-10-14 21:07:32,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:07:32,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:07:32,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:07:32,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:07:32,901 INFO L87 Difference]: Start difference. First operand 27352 states and 34888 transitions. Second operand 7 states. [2020-10-14 21:07:51,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:07:51,888 INFO L93 Difference]: Finished difference Result 53481 states and 71504 transitions. [2020-10-14 21:07:51,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:07:51,889 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 220 [2020-10-14 21:07:51,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:07:51,950 INFO L225 Difference]: With dead ends: 53481 [2020-10-14 21:07:51,950 INFO L226 Difference]: Without dead ends: 24501 [2020-10-14 21:07:51,983 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:07:52,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24501 states. [2020-10-14 21:07:52,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24501 to 24092. [2020-10-14 21:07:52,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24092 states. [2020-10-14 21:07:52,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24092 states to 24092 states and 29949 transitions. [2020-10-14 21:07:52,392 INFO L78 Accepts]: Start accepts. Automaton has 24092 states and 29949 transitions. Word has length 220 [2020-10-14 21:07:52,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:07:52,393 INFO L479 AbstractCegarLoop]: Abstraction has 24092 states and 29949 transitions. [2020-10-14 21:07:52,393 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:07:52,393 INFO L276 IsEmpty]: Start isEmpty. Operand 24092 states and 29949 transitions. [2020-10-14 21:07:52,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-14 21:07:52,398 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:07:52,398 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:07:52,398 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 21:07:52,398 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:07:52,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:07:52,399 INFO L82 PathProgramCache]: Analyzing trace with hash 2127035783, now seen corresponding path program 1 times [2020-10-14 21:07:52,399 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:07:52,401 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1041122274] [2020-10-14 21:07:52,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:07:52,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:52,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:52,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:53,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:53,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:53,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-10-14 21:07:53,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:07:53,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1108 [2020-10-14 21:07:53,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:53,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:53,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:07:53,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-14 21:07:53,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-14 21:07:53,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:07:53,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:07:53,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:53,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:53,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:53,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:07:53,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:53,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:07:53,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:53,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:53,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:07:53,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:07:53,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:07:53,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:07:53,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:07:53,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:53,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:53,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:53,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 21:07:53,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:53,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-14 21:07:53,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:53,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:53,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:07:53,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:07:53,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-14 21:07:53,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:07:53,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-14 21:07:53,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:53,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:54,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:54,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 21:07:54,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:54,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-14 21:07:54,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:54,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:54,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:07:54,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:07:54,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 21:07:54,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:07:54,327 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 115 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:07:54,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1041122274] [2020-10-14 21:07:54,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:07:54,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:07:54,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304132409] [2020-10-14 21:07:54,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:07:54,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:07:54,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:07:54,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:07:54,330 INFO L87 Difference]: Start difference. First operand 24092 states and 29949 transitions. Second operand 7 states. [2020-10-14 21:08:20,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:08:20,253 INFO L93 Difference]: Finished difference Result 68739 states and 90693 transitions. [2020-10-14 21:08:20,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:08:20,256 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 260 [2020-10-14 21:08:20,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:08:20,364 INFO L225 Difference]: With dead ends: 68739 [2020-10-14 21:08:20,364 INFO L226 Difference]: Without dead ends: 45420 [2020-10-14 21:08:20,400 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:08:20,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45420 states. [2020-10-14 21:08:21,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45420 to 42669. [2020-10-14 21:08:21,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42669 states. [2020-10-14 21:08:21,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42669 states to 42669 states and 52134 transitions. [2020-10-14 21:08:21,545 INFO L78 Accepts]: Start accepts. Automaton has 42669 states and 52134 transitions. Word has length 260 [2020-10-14 21:08:21,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:08:21,546 INFO L479 AbstractCegarLoop]: Abstraction has 42669 states and 52134 transitions. [2020-10-14 21:08:21,546 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:08:21,546 INFO L276 IsEmpty]: Start isEmpty. Operand 42669 states and 52134 transitions. [2020-10-14 21:08:21,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-10-14 21:08:21,550 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:08:21,551 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:08:21,551 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 21:08:21,551 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:08:21,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:08:21,552 INFO L82 PathProgramCache]: Analyzing trace with hash -143288330, now seen corresponding path program 1 times [2020-10-14 21:08:21,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:08:21,552 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1813409321] [2020-10-14 21:08:21,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:08:21,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:21,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:22,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:22,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 281 [2020-10-14 21:08:22,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:08:22,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 390 [2020-10-14 21:08:22,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:22,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:22,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:08:22,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 260 [2020-10-14 21:08:22,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 21:08:22,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:22,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:08:22,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:22,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:22,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:22,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:08:22,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:08:22,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 21:08:22,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:22,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:22,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:08:22,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:08:22,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:08:22,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:22,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:08:22,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:22,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:22,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:22,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 21:08:22,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:08:22,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 21:08:22,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:22,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:22,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:08:22,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:08:22,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:08:22,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:22,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 21:08:22,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:22,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:22,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:22,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 21:08:22,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:08:22,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-14 21:08:22,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:22,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:22,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:08:22,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:08:22,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-14 21:08:22,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:22,508 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-14 21:08:22,509 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1813409321] [2020-10-14 21:08:22,509 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:08:22,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:08:22,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692430197] [2020-10-14 21:08:22,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:08:22,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:08:22,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:08:22,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:08:22,512 INFO L87 Difference]: Start difference. First operand 42669 states and 52134 transitions. Second operand 5 states. [2020-10-14 21:08:43,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:08:43,166 INFO L93 Difference]: Finished difference Result 100117 states and 127119 transitions. [2020-10-14 21:08:43,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:08:43,169 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 269 [2020-10-14 21:08:43,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:08:43,297 INFO L225 Difference]: With dead ends: 100117 [2020-10-14 21:08:43,298 INFO L226 Difference]: Without dead ends: 58221 [2020-10-14 21:08:43,349 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 2 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 21:08:43,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58221 states. [2020-10-14 21:08:44,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58221 to 56596. [2020-10-14 21:08:44,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56596 states. [2020-10-14 21:08:44,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56596 states to 56596 states and 68565 transitions. [2020-10-14 21:08:44,376 INFO L78 Accepts]: Start accepts. Automaton has 56596 states and 68565 transitions. Word has length 269 [2020-10-14 21:08:44,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:08:44,376 INFO L479 AbstractCegarLoop]: Abstraction has 56596 states and 68565 transitions. [2020-10-14 21:08:44,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:08:44,377 INFO L276 IsEmpty]: Start isEmpty. Operand 56596 states and 68565 transitions. [2020-10-14 21:08:44,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2020-10-14 21:08:44,381 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:08:44,381 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:08:44,382 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 21:08:44,382 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:08:44,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:08:44,382 INFO L82 PathProgramCache]: Analyzing trace with hash -623584070, now seen corresponding path program 1 times [2020-10-14 21:08:44,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:08:44,383 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [573699478] [2020-10-14 21:08:44,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:08:44,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:44,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:44,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:46,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:46,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 299 [2020-10-14 21:08:46,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:08:46,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1804 [2020-10-14 21:08:46,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:46,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:46,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:08:46,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-14 21:08:46,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 21:08:46,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:08:46,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:08:46,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:46,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:46,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:46,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:08:46,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:08:46,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:08:46,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:46,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:46,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:08:46,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:08:46,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:08:46,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:46,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:08:46,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:46,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:46,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:46,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 21:08:46,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:08:46,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-14 21:08:46,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:46,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:46,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:08:46,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:08:46,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-14 21:08:46,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:46,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 21:08:46,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:46,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:46,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:46,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 21:08:46,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:08:46,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-10-14 21:08:46,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:46,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:46,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:08:46,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:08:46,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-14 21:08:46,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:47,152 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 146 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:08:47,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [573699478] [2020-10-14 21:08:47,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:08:47,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:08:47,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767896218] [2020-10-14 21:08:47,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:08:47,155 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:08:47,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:08:47,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:08:47,158 INFO L87 Difference]: Start difference. First operand 56596 states and 68565 transitions. Second operand 7 states.