/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=BIGGEST --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/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 20:19:32,907 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 20:19:32,908 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 20:19:32,949 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 20:19:32,949 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 20:19:32,957 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 20:19:32,958 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 20:19:32,961 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 20:19:32,962 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 20:19:32,963 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 20:19:32,964 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 20:19:32,967 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 20:19:32,967 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 20:19:32,971 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 20:19:32,973 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 20:19:32,974 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 20:19:32,974 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 20:19:32,977 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 20:19:32,978 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 20:19:32,984 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 20:19:32,986 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 20:19:32,988 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 20:19:32,989 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 20:19:32,990 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 20:19:32,999 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 20:19:32,999 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 20:19:33,000 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 20:19:33,003 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 20:19:33,003 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 20:19:33,004 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 20:19:33,004 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 20:19:33,005 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 20:19:33,008 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 20:19:33,009 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 20:19:33,009 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 20:19:33,010 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 20:19:33,010 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 20:19:33,011 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 20:19:33,011 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 20:19:33,012 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 20:19:33,013 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 20:19:33,014 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 [2020-10-12 20:19:33,051 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 20:19:33,052 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 20:19:33,054 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 20:19:33,054 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 20:19:33,054 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 20:19:33,054 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 20:19:33,054 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 20:19:33,055 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 20:19:33,055 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 20:19:33,055 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 20:19:33,056 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 20:19:33,056 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 20:19:33,057 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 20:19:33,057 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 20:19:33,058 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 20:19:33,058 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 20:19:33,058 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 20:19:33,058 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 20:19:33,058 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 20:19:33,059 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 20:19:33,059 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 20:19:33,059 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 20:19:33,059 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 20:19:33,059 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 20:19:33,060 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 20:19:33,060 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 20:19:33,060 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 20:19:33,060 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 20:19:33,060 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 20:19:33,060 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 20:19:33,378 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 20:19:33,388 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 20:19:33,392 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 20:19:33,393 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 20:19:33,393 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 20:19:33,394 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-12 20:19:33,468 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a3e0ee34f/b7a0d4bc8f2746f880492b39e919fbee/FLAG7ffd692e1 [2020-10-12 20:19:34,004 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 20:19:34,005 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-12 20:19:34,022 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a3e0ee34f/b7a0d4bc8f2746f880492b39e919fbee/FLAG7ffd692e1 [2020-10-12 20:19:34,284 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a3e0ee34f/b7a0d4bc8f2746f880492b39e919fbee [2020-10-12 20:19:34,294 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 20:19:34,296 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 20:19:34,297 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 20:19:34,297 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 20:19:34,303 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 20:19:34,304 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:19:34" (1/1) ... [2020-10-12 20:19:34,307 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@457589d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:19:34, skipping insertion in model container [2020-10-12 20:19:34,307 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:19:34" (1/1) ... [2020-10-12 20:19:34,316 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 20:19:34,389 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 20:19:35,070 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:19:35,081 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 20:19:35,620 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:19:35,640 INFO L208 MainTranslator]: Completed translation [2020-10-12 20:19:35,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:19:35 WrapperNode [2020-10-12 20:19:35,641 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 20:19:35,642 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 20:19:35,642 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 20:19:35,642 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 20:19:35,652 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:19:35" (1/1) ... [2020-10-12 20:19:35,653 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:19:35" (1/1) ... [2020-10-12 20:19:35,673 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:19:35" (1/1) ... [2020-10-12 20:19:35,674 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:19:35" (1/1) ... [2020-10-12 20:19:35,709 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:19:35" (1/1) ... [2020-10-12 20:19:35,748 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:19:35" (1/1) ... [2020-10-12 20:19:35,759 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:19:35" (1/1) ... [2020-10-12 20:19:35,781 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 20:19:35,782 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 20:19:35,782 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 20:19:35,782 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 20:19:35,786 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:19:35" (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 [2020-10-12 20:19:35,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 20:19:35,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 20:19:35,898 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 20:19:35,898 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 20:19:35,899 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 20:19:35,899 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 20:19:35,899 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 20:19:35,899 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 20:19:35,899 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 20:19:35,899 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 20:19:35,900 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 20:19:35,900 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 20:19:35,900 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 20:19:35,900 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 20:19:35,900 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 20:19:35,901 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 20:19:35,901 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 20:19:35,901 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 20:19:35,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 20:19:35,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 20:19:37,499 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 20:19:37,500 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 20:19:37,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:19:37 BoogieIcfgContainer [2020-10-12 20:19:37,507 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 20:19:37,509 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 20:19:37,509 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 20:19:37,512 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 20:19:37,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 08:19:34" (1/3) ... [2020-10-12 20:19:37,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@527b33cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:19:37, skipping insertion in model container [2020-10-12 20:19:37,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:19:35" (2/3) ... [2020-10-12 20:19:37,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@527b33cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:19:37, skipping insertion in model container [2020-10-12 20:19:37,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:19:37" (3/3) ... [2020-10-12 20:19:37,515 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-12 20:19:37,526 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 20:19:37,534 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-12 20:19:37,548 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-12 20:19:37,574 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 20:19:37,575 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 20:19:37,575 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 20:19:37,575 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 20:19:37,575 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 20:19:37,575 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 20:19:37,575 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 20:19:37,575 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 20:19:37,602 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states. [2020-10-12 20:19:37,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-12 20:19:37,621 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:19:37,623 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:19:37,624 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:19:37,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:19:37,630 INFO L82 PathProgramCache]: Analyzing trace with hash -2097165427, now seen corresponding path program 1 times [2020-10-12 20:19:37,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:19:37,640 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [195322776] [2020-10-12 20:19:37,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:19:38,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:19:38,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:38,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:38,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:38,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:39,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:39,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:39,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:39,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:39,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:40,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:41,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:41,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:41,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:43,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:19:43,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-12 20:19:43,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 20:19:43,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-12 20:19:43,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:19:43,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:19:43,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:19:43,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-12 20:19:43,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 20:19:43,663 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-12 20:19:43,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:19:43,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:19:43,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:43,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:19:43,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:19:43,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:19:43,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-12 20:19:43,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:19:43,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:19:43,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:19:43,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:19:43,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-12 20:19:43,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:19:43,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [195322776] [2020-10-12 20:19:43,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:19:43,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:19:43,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871239161] [2020-10-12 20:19:43,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:19:43,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:19:43,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:19:43,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:19:43,885 INFO L87 Difference]: Start difference. First operand 418 states. Second operand 5 states. [2020-10-12 20:19:47,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:19:47,796 INFO L93 Difference]: Finished difference Result 1197 states and 2129 transitions. [2020-10-12 20:19:47,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 20:19:47,798 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-10-12 20:19:47,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:19:47,824 INFO L225 Difference]: With dead ends: 1197 [2020-10-12 20:19:47,824 INFO L226 Difference]: Without dead ends: 792 [2020-10-12 20:19:47,830 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:19:47,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 792 states. [2020-10-12 20:19:47,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 792 to 766. [2020-10-12 20:19:47,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 766 states. [2020-10-12 20:19:47,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 1098 transitions. [2020-10-12 20:19:47,939 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 1098 transitions. Word has length 152 [2020-10-12 20:19:47,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:19:47,940 INFO L479 AbstractCegarLoop]: Abstraction has 766 states and 1098 transitions. [2020-10-12 20:19:47,940 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:19:47,940 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 1098 transitions. [2020-10-12 20:19:47,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-12 20:19:47,945 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:19:47,945 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:19:47,946 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 20:19:47,946 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:19:47,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:19:47,947 INFO L82 PathProgramCache]: Analyzing trace with hash 676617767, now seen corresponding path program 1 times [2020-10-12 20:19:47,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:19:47,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1349050225] [2020-10-12 20:19:47,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:19:47,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:19:48,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:48,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:48,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:48,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:48,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:48,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:48,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:48,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:49,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:49,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:50,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:52,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:52,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:53,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:19:53,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-12 20:19:53,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 20:19:53,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-12 20:19:53,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:19:53,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:19:53,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:19:53,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-12 20:19:53,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:19:53,541 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-12 20:19:53,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:19:53,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:19:53,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:53,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:19:53,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:19:53,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:19:53,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 20:19:53,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:19:53,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:19:53,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:19:53,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:19:53,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:19:53,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:19:53,664 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1349050225] [2020-10-12 20:19:53,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:19:53,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:19:53,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4658561] [2020-10-12 20:19:53,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:19:53,667 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:19:53,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:19:53,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:19:53,668 INFO L87 Difference]: Start difference. First operand 766 states and 1098 transitions. Second operand 5 states. [2020-10-12 20:19:56,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:19:56,948 INFO L93 Difference]: Finished difference Result 2208 states and 3150 transitions. [2020-10-12 20:19:56,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:19:56,949 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-10-12 20:19:56,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:19:56,958 INFO L225 Difference]: With dead ends: 2208 [2020-10-12 20:19:56,958 INFO L226 Difference]: Without dead ends: 1470 [2020-10-12 20:19:56,961 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:19:56,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1470 states. [2020-10-12 20:19:57,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1470 to 1444. [2020-10-12 20:19:57,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1444 states. [2020-10-12 20:19:57,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 2053 transitions. [2020-10-12 20:19:57,030 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 2053 transitions. Word has length 153 [2020-10-12 20:19:57,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:19:57,031 INFO L479 AbstractCegarLoop]: Abstraction has 1444 states and 2053 transitions. [2020-10-12 20:19:57,031 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:19:57,031 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 2053 transitions. [2020-10-12 20:19:57,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-12 20:19:57,035 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:19:57,035 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:19:57,035 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 20:19:57,036 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:19:57,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:19:57,036 INFO L82 PathProgramCache]: Analyzing trace with hash 794632079, now seen corresponding path program 1 times [2020-10-12 20:19:57,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:19:57,037 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2109420222] [2020-10-12 20:19:57,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:19:57,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:19:57,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:57,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:57,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:57,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:57,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:57,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:57,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:57,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:57,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:58,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:58,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:58,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:01,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:01,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:01,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:02,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:20:02,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-12 20:20:02,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 20:20:02,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-12 20:20:02,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:20:02,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:20:02,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-12 20:20:02,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 20:20:02,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:20:02,464 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-12 20:20:02,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:20:02,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:20:02,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:02,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:20:02,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:20:02,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:20:02,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 20:20:02,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:20:02,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:20:02,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:20:02,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:20:02,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:20:02,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:20:02,534 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2109420222] [2020-10-12 20:20:02,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:20:02,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:20:02,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759064457] [2020-10-12 20:20:02,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:20:02,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:20:02,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:20:02,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:20:02,538 INFO L87 Difference]: Start difference. First operand 1444 states and 2053 transitions. Second operand 5 states. [2020-10-12 20:20:04,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:20:04,194 INFO L93 Difference]: Finished difference Result 2516 states and 3570 transitions. [2020-10-12 20:20:04,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:20:04,196 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-10-12 20:20:04,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:20:04,202 INFO L225 Difference]: With dead ends: 2516 [2020-10-12 20:20:04,202 INFO L226 Difference]: Without dead ends: 1118 [2020-10-12 20:20:04,205 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:20:04,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1118 states. [2020-10-12 20:20:04,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1118 to 1116. [2020-10-12 20:20:04,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1116 states. [2020-10-12 20:20:04,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1116 states to 1116 states and 1581 transitions. [2020-10-12 20:20:04,253 INFO L78 Accepts]: Start accepts. Automaton has 1116 states and 1581 transitions. Word has length 154 [2020-10-12 20:20:04,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:20:04,254 INFO L479 AbstractCegarLoop]: Abstraction has 1116 states and 1581 transitions. [2020-10-12 20:20:04,254 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:20:04,254 INFO L276 IsEmpty]: Start isEmpty. Operand 1116 states and 1581 transitions. [2020-10-12 20:20:04,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-12 20:20:04,257 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:20:04,257 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:20:04,257 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 20:20:04,258 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:20:04,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:20:04,258 INFO L82 PathProgramCache]: Analyzing trace with hash -90577570, now seen corresponding path program 1 times [2020-10-12 20:20:04,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:20:04,259 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [367077815] [2020-10-12 20:20:04,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:20:04,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:20:04,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:04,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:04,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:04,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:04,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:04,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:04,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:04,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:04,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:07,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:07,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:09,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:20:09,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-12 20:20:09,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 20:20:09,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-12 20:20:09,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:20:09,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:20:09,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:20:09,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-12 20:20:09,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:20:09,637 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-12 20:20:09,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:20:09,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:20:09,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:09,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:20:09,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:20:09,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:20:09,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 20:20:09,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:20:09,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:20:09,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:20:09,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:20:09,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:20:09,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:20:09,712 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [367077815] [2020-10-12 20:20:09,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:20:09,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:20:09,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050133210] [2020-10-12 20:20:09,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:20:09,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:20:09,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:20:09,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:20:09,716 INFO L87 Difference]: Start difference. First operand 1116 states and 1581 transitions. Second operand 5 states. [2020-10-12 20:20:12,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:20:12,911 INFO L93 Difference]: Finished difference Result 2907 states and 4102 transitions. [2020-10-12 20:20:12,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:20:12,911 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-10-12 20:20:12,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:20:12,922 INFO L225 Difference]: With dead ends: 2907 [2020-10-12 20:20:12,922 INFO L226 Difference]: Without dead ends: 1835 [2020-10-12 20:20:12,928 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:20:12,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1835 states. [2020-10-12 20:20:13,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1835 to 1808. [2020-10-12 20:20:13,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1808 states. [2020-10-12 20:20:13,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1808 states to 1808 states and 2535 transitions. [2020-10-12 20:20:13,011 INFO L78 Accepts]: Start accepts. Automaton has 1808 states and 2535 transitions. Word has length 157 [2020-10-12 20:20:13,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:20:13,011 INFO L479 AbstractCegarLoop]: Abstraction has 1808 states and 2535 transitions. [2020-10-12 20:20:13,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:20:13,012 INFO L276 IsEmpty]: Start isEmpty. Operand 1808 states and 2535 transitions. [2020-10-12 20:20:13,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-12 20:20:13,015 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:20:13,015 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:20:13,016 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 20:20:13,016 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:20:13,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:20:13,016 INFO L82 PathProgramCache]: Analyzing trace with hash 1423021568, now seen corresponding path program 1 times [2020-10-12 20:20:13,017 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:20:13,017 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1628420685] [2020-10-12 20:20:13,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:20:13,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:20:13,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:13,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:13,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:13,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:13,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:13,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:13,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:13,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:15,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:15,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:15,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:17,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:18,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:20:18,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-12 20:20:18,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 20:20:18,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 20:20:18,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:20:18,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:20:18,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:20:18,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-12 20:20:18,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:20:18,401 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-12 20:20:18,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:20:18,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:20:18,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:18,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:20:18,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:20:18,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:20:18,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 20:20:18,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:20:18,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:20:18,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:20:18,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:20:18,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:20:18,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:20:18,510 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1628420685] [2020-10-12 20:20:18,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:20:18,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:20:18,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239412100] [2020-10-12 20:20:18,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:20:18,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:20:18,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:20:18,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:20:18,512 INFO L87 Difference]: Start difference. First operand 1808 states and 2535 transitions. Second operand 5 states. [2020-10-12 20:20:21,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:20:21,843 INFO L93 Difference]: Finished difference Result 5128 states and 7171 transitions. [2020-10-12 20:20:21,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:20:21,844 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2020-10-12 20:20:21,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:20:21,859 INFO L225 Difference]: With dead ends: 5128 [2020-10-12 20:20:21,860 INFO L226 Difference]: Without dead ends: 3475 [2020-10-12 20:20:21,864 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:20:21,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3475 states. [2020-10-12 20:20:22,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3475 to 3452. [2020-10-12 20:20:22,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3452 states. [2020-10-12 20:20:22,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3452 states to 3452 states and 4774 transitions. [2020-10-12 20:20:22,046 INFO L78 Accepts]: Start accepts. Automaton has 3452 states and 4774 transitions. Word has length 159 [2020-10-12 20:20:22,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:20:22,047 INFO L479 AbstractCegarLoop]: Abstraction has 3452 states and 4774 transitions. [2020-10-12 20:20:22,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:20:22,047 INFO L276 IsEmpty]: Start isEmpty. Operand 3452 states and 4774 transitions. [2020-10-12 20:20:22,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-12 20:20:22,054 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:20:22,054 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:20:22,055 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 20:20:22,055 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:20:22,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:20:22,055 INFO L82 PathProgramCache]: Analyzing trace with hash 387195719, now seen corresponding path program 1 times [2020-10-12 20:20:22,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:20:22,056 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1156337015] [2020-10-12 20:20:22,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:20:22,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:20:22,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:22,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:22,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:22,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:22,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:22,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:23,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:23,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:23,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:24,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:24,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:24,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:26,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:26,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:27,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:20:27,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-12 20:20:27,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 20:20:27,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 20:20:27,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:20:27,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 20:20:27,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-12 20:20:27,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-12 20:20:27,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:20:27,423 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-12 20:20:27,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:20:27,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:20:27,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:27,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:20:27,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:20:27,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:20:27,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 20:20:27,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:20:27,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:20:27,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:20:27,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:20:27,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:20:27,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:20:27,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1156337015] [2020-10-12 20:20:27,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:20:27,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 20:20:27,488 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955378275] [2020-10-12 20:20:27,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 20:20:27,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:20:27,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 20:20:27,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-12 20:20:27,490 INFO L87 Difference]: Start difference. First operand 3452 states and 4774 transitions. Second operand 10 states. [2020-10-12 20:20:27,807 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-12 20:20:31,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:20:31,320 INFO L93 Difference]: Finished difference Result 13378 states and 19047 transitions. [2020-10-12 20:20:31,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-12 20:20:31,321 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 160 [2020-10-12 20:20:31,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:20:31,363 INFO L225 Difference]: With dead ends: 13378 [2020-10-12 20:20:31,363 INFO L226 Difference]: Without dead ends: 11218 [2020-10-12 20:20:31,370 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=175, Invalid=581, Unknown=0, NotChecked=0, Total=756 [2020-10-12 20:20:31,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11218 states. [2020-10-12 20:20:31,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11218 to 7092. [2020-10-12 20:20:31,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7092 states. [2020-10-12 20:20:31,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7092 states to 7092 states and 9908 transitions. [2020-10-12 20:20:31,785 INFO L78 Accepts]: Start accepts. Automaton has 7092 states and 9908 transitions. Word has length 160 [2020-10-12 20:20:31,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:20:31,787 INFO L479 AbstractCegarLoop]: Abstraction has 7092 states and 9908 transitions. [2020-10-12 20:20:31,787 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 20:20:31,787 INFO L276 IsEmpty]: Start isEmpty. Operand 7092 states and 9908 transitions. [2020-10-12 20:20:31,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-12 20:20:31,800 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:20:31,800 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:20:31,800 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 20:20:31,800 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:20:31,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:20:31,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1943411768, now seen corresponding path program 1 times [2020-10-12 20:20:31,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:20:31,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1448496672] [2020-10-12 20:20:31,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:20:31,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:20:31,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:31,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:31,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:31,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:31,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:32,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:33,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:33,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:33,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:35,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:35,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:35,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:36,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:20:36,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-12 20:20:36,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 20:20:36,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 20:20:36,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:20:36,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:20:36,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:20:36,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 20:20:36,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:20:37,121 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-12 20:20:37,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:20:37,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:20:37,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:37,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:20:37,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:20:37,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:20:37,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 20:20:37,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:20:37,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:20:37,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:20:37,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:20:37,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:20:37,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:20:37,170 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1448496672] [2020-10-12 20:20:37,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:20:37,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:20:37,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937877205] [2020-10-12 20:20:37,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:20:37,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:20:37,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:20:37,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:20:37,172 INFO L87 Difference]: Start difference. First operand 7092 states and 9908 transitions. Second operand 5 states. [2020-10-12 20:20:37,453 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-12 20:20:39,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:20:39,911 INFO L93 Difference]: Finished difference Result 20620 states and 28729 transitions. [2020-10-12 20:20:39,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 20:20:39,912 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2020-10-12 20:20:39,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:20:39,954 INFO L225 Difference]: With dead ends: 20620 [2020-10-12 20:20:39,954 INFO L226 Difference]: Without dead ends: 13546 [2020-10-12 20:20:39,972 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 20:20:39,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13546 states. [2020-10-12 20:20:40,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13546 to 13518. [2020-10-12 20:20:40,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13518 states. [2020-10-12 20:20:40,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13518 states to 13518 states and 18684 transitions. [2020-10-12 20:20:40,771 INFO L78 Accepts]: Start accepts. Automaton has 13518 states and 18684 transitions. Word has length 160 [2020-10-12 20:20:40,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:20:40,771 INFO L479 AbstractCegarLoop]: Abstraction has 13518 states and 18684 transitions. [2020-10-12 20:20:40,772 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:20:40,772 INFO L276 IsEmpty]: Start isEmpty. Operand 13518 states and 18684 transitions. [2020-10-12 20:20:40,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-12 20:20:40,789 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:20:40,790 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:20:40,790 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 20:20:40,790 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:20:40,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:20:40,791 INFO L82 PathProgramCache]: Analyzing trace with hash 411843669, now seen corresponding path program 1 times [2020-10-12 20:20:40,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:20:40,791 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [145186693] [2020-10-12 20:20:40,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:20:40,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:20:40,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:40,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:40,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:40,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:40,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:41,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:42,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:42,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:42,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:45,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:20:45,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-12 20:20:45,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 20:20:45,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-12 20:20:45,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:20:45,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:20:45,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 20:20:45,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 20:20:45,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:20:46,112 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-12 20:20:46,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:20:46,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:20:46,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:46,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:20:46,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:20:46,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:20:46,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 20:20:46,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:20:46,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:20:46,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:20:46,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:20:46,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:20:46,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:20:46,154 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [145186693] [2020-10-12 20:20:46,154 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:20:46,154 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:20:46,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710894344] [2020-10-12 20:20:46,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:20:46,155 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:20:46,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:20:46,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:20:46,156 INFO L87 Difference]: Start difference. First operand 13518 states and 18684 transitions. Second operand 5 states. [2020-10-12 20:20:48,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:20:48,190 INFO L93 Difference]: Finished difference Result 26914 states and 37190 transitions. [2020-10-12 20:20:48,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:20:48,190 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2020-10-12 20:20:48,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:20:48,220 INFO L225 Difference]: With dead ends: 26914 [2020-10-12 20:20:48,220 INFO L226 Difference]: Without dead ends: 13493 [2020-10-12 20:20:48,242 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:20:48,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13493 states. [2020-10-12 20:20:49,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13493 to 13493. [2020-10-12 20:20:49,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13493 states. [2020-10-12 20:20:49,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13493 states to 13493 states and 18634 transitions. [2020-10-12 20:20:49,074 INFO L78 Accepts]: Start accepts. Automaton has 13493 states and 18634 transitions. Word has length 160 [2020-10-12 20:20:49,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:20:49,075 INFO L479 AbstractCegarLoop]: Abstraction has 13493 states and 18634 transitions. [2020-10-12 20:20:49,075 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:20:49,075 INFO L276 IsEmpty]: Start isEmpty. Operand 13493 states and 18634 transitions. [2020-10-12 20:20:49,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-12 20:20:49,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:20:49,093 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:20:49,093 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 20:20:49,093 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:20:49,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:20:49,094 INFO L82 PathProgramCache]: Analyzing trace with hash 1646831385, now seen corresponding path program 1 times [2020-10-12 20:20:49,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:20:49,094 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [972708044] [2020-10-12 20:20:49,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:20:49,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:20:49,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:49,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:49,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:49,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:49,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:49,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:49,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:49,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:49,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:49,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:49,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:50,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:50,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:52,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:54,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:20:54,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-12 20:20:54,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 20:20:54,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 20:20:54,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:20:54,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:20:54,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:20:54,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-12 20:20:54,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:20:54,411 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-12 20:20:54,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:20:54,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:20:54,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:54,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:20:54,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:20:54,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:20:54,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 20:20:54,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:20:54,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:20:54,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:20:54,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:20:54,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:20:54,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:20:54,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [972708044] [2020-10-12 20:20:54,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:20:54,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:20:54,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560594991] [2020-10-12 20:20:54,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:20:54,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:20:54,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:20:54,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:20:54,470 INFO L87 Difference]: Start difference. First operand 13493 states and 18634 transitions. Second operand 5 states. [2020-10-12 20:20:58,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:20:58,048 INFO L93 Difference]: Finished difference Result 34407 states and 47386 transitions. [2020-10-12 20:20:58,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:20:58,049 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-10-12 20:20:58,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:20:58,090 INFO L225 Difference]: With dead ends: 34407 [2020-10-12 20:20:58,090 INFO L226 Difference]: Without dead ends: 21070 [2020-10-12 20:20:58,113 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:20:58,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21070 states. [2020-10-12 20:20:58,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21070 to 21048. [2020-10-12 20:20:58,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21048 states. [2020-10-12 20:20:59,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21048 states to 21048 states and 28596 transitions. [2020-10-12 20:20:59,016 INFO L78 Accepts]: Start accepts. Automaton has 21048 states and 28596 transitions. Word has length 161 [2020-10-12 20:20:59,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:20:59,016 INFO L479 AbstractCegarLoop]: Abstraction has 21048 states and 28596 transitions. [2020-10-12 20:20:59,016 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:20:59,016 INFO L276 IsEmpty]: Start isEmpty. Operand 21048 states and 28596 transitions. [2020-10-12 20:20:59,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-12 20:20:59,038 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:20:59,038 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:20:59,038 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 20:20:59,039 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:20:59,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:20:59,039 INFO L82 PathProgramCache]: Analyzing trace with hash -628110042, now seen corresponding path program 1 times [2020-10-12 20:20:59,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:20:59,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1282866708] [2020-10-12 20:20:59,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:20:59,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:20:59,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:59,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:59,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:59,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:59,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:59,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:03,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:03,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:03,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:03,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:04,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:21:04,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-12 20:21:04,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 20:21:04,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 20:21:04,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:21:04,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:21:04,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:21:04,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 20:21:04,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:21:04,409 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-12 20:21:04,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:21:04,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:21:04,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:04,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:21:04,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:21:04,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:21:04,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 20:21:04,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:21:04,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:21:04,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:21:04,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:21:04,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:21:04,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:21:04,464 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1282866708] [2020-10-12 20:21:04,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:21:04,465 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 20:21:04,465 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64635061] [2020-10-12 20:21:04,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:21:04,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:21:04,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:21:04,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:21:04,466 INFO L87 Difference]: Start difference. First operand 21048 states and 28596 transitions. Second operand 9 states. [2020-10-12 20:21:04,776 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-12 20:21:09,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:21:09,295 INFO L93 Difference]: Finished difference Result 61137 states and 84522 transitions. [2020-10-12 20:21:09,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 20:21:09,295 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 165 [2020-10-12 20:21:09,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:21:09,396 INFO L225 Difference]: With dead ends: 61137 [2020-10-12 20:21:09,396 INFO L226 Difference]: Without dead ends: 42135 [2020-10-12 20:21:09,436 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2020-10-12 20:21:09,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42135 states. [2020-10-12 20:21:10,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42135 to 25645. [2020-10-12 20:21:10,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25645 states. [2020-10-12 20:21:11,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25645 states to 25645 states and 34625 transitions. [2020-10-12 20:21:11,008 INFO L78 Accepts]: Start accepts. Automaton has 25645 states and 34625 transitions. Word has length 165 [2020-10-12 20:21:11,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:21:11,008 INFO L479 AbstractCegarLoop]: Abstraction has 25645 states and 34625 transitions. [2020-10-12 20:21:11,008 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:21:11,008 INFO L276 IsEmpty]: Start isEmpty. Operand 25645 states and 34625 transitions. [2020-10-12 20:21:11,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-12 20:21:11,029 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:21:11,029 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:21:11,029 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 20:21:11,029 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:21:11,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:21:11,030 INFO L82 PathProgramCache]: Analyzing trace with hash -580687482, now seen corresponding path program 1 times [2020-10-12 20:21:11,030 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:21:11,030 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1278771390] [2020-10-12 20:21:11,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:21:11,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:21:11,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:11,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:11,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:11,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:11,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:11,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:11,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:11,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:15,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:15,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:16,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:21:16,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-12 20:21:16,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 20:21:16,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-12 20:21:16,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:21:16,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:21:16,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:21:16,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-12 20:21:16,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:21:16,382 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-12 20:21:16,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:21:16,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:21:16,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:16,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:21:16,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:21:16,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:21:16,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 20:21:16,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:21:16,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:21:16,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:21:16,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:21:16,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:21:16,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:21:16,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1278771390] [2020-10-12 20:21:16,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:21:16,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:21:16,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444720110] [2020-10-12 20:21:16,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:21:16,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:21:16,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:21:16,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:21:16,436 INFO L87 Difference]: Start difference. First operand 25645 states and 34625 transitions. Second operand 5 states. [2020-10-12 20:21:21,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:21:21,260 INFO L93 Difference]: Finished difference Result 37201 states and 49993 transitions. [2020-10-12 20:21:21,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:21:21,261 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 165 [2020-10-12 20:21:21,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:21:21,292 INFO L225 Difference]: With dead ends: 37201 [2020-10-12 20:21:21,292 INFO L226 Difference]: Without dead ends: 25126 [2020-10-12 20:21:21,306 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:21:21,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25126 states. [2020-10-12 20:21:22,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25126 to 25092. [2020-10-12 20:21:22,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25092 states. [2020-10-12 20:21:22,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25092 states to 25092 states and 33553 transitions. [2020-10-12 20:21:22,657 INFO L78 Accepts]: Start accepts. Automaton has 25092 states and 33553 transitions. Word has length 165 [2020-10-12 20:21:22,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:21:22,657 INFO L479 AbstractCegarLoop]: Abstraction has 25092 states and 33553 transitions. [2020-10-12 20:21:22,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:21:22,658 INFO L276 IsEmpty]: Start isEmpty. Operand 25092 states and 33553 transitions. [2020-10-12 20:21:22,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-12 20:21:22,674 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:21:22,675 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:21:22,675 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 20:21:22,675 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:21:22,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:21:22,675 INFO L82 PathProgramCache]: Analyzing trace with hash 1200539054, now seen corresponding path program 1 times [2020-10-12 20:21:22,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:21:22,676 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [514809944] [2020-10-12 20:21:22,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:21:22,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:21:22,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:22,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:22,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:22,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:22,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:27,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:27,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:21:27,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-12 20:21:27,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:21:27,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 20:21:27,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:21:27,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:21:27,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 20:21:27,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 20:21:27,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:21:28,003 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-12 20:21:28,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:21:28,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:21:28,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:28,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:21:28,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:21:28,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:21:28,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 20:21:28,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:21:28,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:21:28,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:21:28,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:21:28,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:21:28,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:21:28,042 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [514809944] [2020-10-12 20:21:28,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:21:28,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:21:28,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434015897] [2020-10-12 20:21:28,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:21:28,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:21:28,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:21:28,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:21:28,044 INFO L87 Difference]: Start difference. First operand 25092 states and 33553 transitions. Second operand 5 states. [2020-10-12 20:21:30,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:21:30,696 INFO L93 Difference]: Finished difference Result 29602 states and 39512 transitions. [2020-10-12 20:21:30,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:21:30,698 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 166 [2020-10-12 20:21:30,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:21:30,715 INFO L225 Difference]: With dead ends: 29602 [2020-10-12 20:21:30,716 INFO L226 Difference]: Without dead ends: 17940 [2020-10-12 20:21:30,730 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:21:30,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17940 states. [2020-10-12 20:21:31,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17940 to 17940. [2020-10-12 20:21:31,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17940 states. [2020-10-12 20:21:31,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17940 states to 17940 states and 24031 transitions. [2020-10-12 20:21:31,853 INFO L78 Accepts]: Start accepts. Automaton has 17940 states and 24031 transitions. Word has length 166 [2020-10-12 20:21:31,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:21:31,853 INFO L479 AbstractCegarLoop]: Abstraction has 17940 states and 24031 transitions. [2020-10-12 20:21:31,854 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:21:31,854 INFO L276 IsEmpty]: Start isEmpty. Operand 17940 states and 24031 transitions. [2020-10-12 20:21:31,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-12 20:21:31,863 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:21:31,863 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:21:31,863 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 20:21:31,863 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:21:31,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:21:31,864 INFO L82 PathProgramCache]: Analyzing trace with hash 2114205449, now seen corresponding path program 1 times [2020-10-12 20:21:31,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:21:31,864 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [386857492] [2020-10-12 20:21:31,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:21:31,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:21:31,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:31,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:31,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:32,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:32,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:32,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:33,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:34,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:36,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:21:36,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-12 20:21:36,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 20:21:36,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-12 20:21:36,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:21:36,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 20:21:36,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-12 20:21:36,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-12 20:21:36,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:21:37,288 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-12 20:21:37,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:21:37,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:21:37,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:37,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:21:37,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:21:37,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:21:37,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 20:21:37,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:21:37,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:21:37,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:21:37,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:21:37,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:21:37,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:21:37,334 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [386857492] [2020-10-12 20:21:37,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:21:37,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 20:21:37,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162704352] [2020-10-12 20:21:37,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 20:21:37,336 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:21:37,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 20:21:37,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-12 20:21:37,336 INFO L87 Difference]: Start difference. First operand 17940 states and 24031 transitions. Second operand 10 states. [2020-10-12 20:21:37,665 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-12 20:21:46,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:21:46,523 INFO L93 Difference]: Finished difference Result 91273 states and 125852 transitions. [2020-10-12 20:21:46,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-12 20:21:46,529 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 170 [2020-10-12 20:21:46,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:21:46,647 INFO L225 Difference]: With dead ends: 91273 [2020-10-12 20:21:46,647 INFO L226 Difference]: Without dead ends: 80928 [2020-10-12 20:21:46,666 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=182, Invalid=630, Unknown=0, NotChecked=0, Total=812 [2020-10-12 20:21:46,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80928 states. [2020-10-12 20:21:49,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80928 to 48412. [2020-10-12 20:21:49,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48412 states. [2020-10-12 20:21:49,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48412 states to 48412 states and 66268 transitions. [2020-10-12 20:21:49,843 INFO L78 Accepts]: Start accepts. Automaton has 48412 states and 66268 transitions. Word has length 170 [2020-10-12 20:21:49,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:21:49,844 INFO L479 AbstractCegarLoop]: Abstraction has 48412 states and 66268 transitions. [2020-10-12 20:21:49,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 20:21:49,844 INFO L276 IsEmpty]: Start isEmpty. Operand 48412 states and 66268 transitions. [2020-10-12 20:21:49,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-12 20:21:49,862 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:21:49,862 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:21:49,862 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 20:21:49,863 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:21:49,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:21:49,863 INFO L82 PathProgramCache]: Analyzing trace with hash -1813581771, now seen corresponding path program 1 times [2020-10-12 20:21:49,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:21:49,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [895959880] [2020-10-12 20:21:49,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:21:49,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:21:49,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:49,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:49,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:50,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:51,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:21:51,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-12 20:21:51,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:21:51,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1174 [2020-10-12 20:21:51,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:21:51,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:21:51,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-12 20:21:51,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 20:21:51,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:21:51,339 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-12 20:21:51,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:21:51,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:21:51,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:51,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:21:51,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:21:51,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:21:51,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 20:21:51,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:21:51,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:21:51,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:21:51,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:21:51,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:21:51,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:21:51,710 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [895959880] [2020-10-12 20:21:51,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:21:51,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 20:21:51,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972061241] [2020-10-12 20:21:51,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 20:21:51,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:21:51,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 20:21:51,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 20:21:51,711 INFO L87 Difference]: Start difference. First operand 48412 states and 66268 transitions. Second operand 4 states. [2020-10-12 20:21:59,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:21:59,867 INFO L93 Difference]: Finished difference Result 123322 states and 171607 transitions. [2020-10-12 20:21:59,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 20:21:59,868 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 170 [2020-10-12 20:21:59,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:21:59,963 INFO L225 Difference]: With dead ends: 123322 [2020-10-12 20:21:59,963 INFO L226 Difference]: Without dead ends: 76621 [2020-10-12 20:22:00,005 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 20:22:00,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76621 states. [2020-10-12 20:22:04,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76621 to 66250. [2020-10-12 20:22:04,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66250 states. [2020-10-12 20:22:04,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66250 states to 66250 states and 94217 transitions. [2020-10-12 20:22:04,636 INFO L78 Accepts]: Start accepts. Automaton has 66250 states and 94217 transitions. Word has length 170 [2020-10-12 20:22:04,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:22:04,636 INFO L479 AbstractCegarLoop]: Abstraction has 66250 states and 94217 transitions. [2020-10-12 20:22:04,636 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 20:22:04,636 INFO L276 IsEmpty]: Start isEmpty. Operand 66250 states and 94217 transitions. [2020-10-12 20:22:04,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-12 20:22:04,662 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:22:04,662 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:22:04,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 20:22:04,663 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:22:04,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:22:04,663 INFO L82 PathProgramCache]: Analyzing trace with hash 1229736299, now seen corresponding path program 1 times [2020-10-12 20:22:04,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:22:04,663 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1475480323] [2020-10-12 20:22:04,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:22:04,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:22:04,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:04,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:04,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:05,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:22:05,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-12 20:22:05,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:22:05,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 821 [2020-10-12 20:22:05,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:22:05,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:22:05,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-12 20:22:05,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 20:22:05,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:22:05,779 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-12 20:22:05,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:22:05,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:22:05,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:05,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:22:05,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:22:05,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:22:05,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 20:22:05,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:22:05,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:22:05,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:22:05,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:22:05,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:22:05,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:22:05,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1475480323] [2020-10-12 20:22:05,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:22:05,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 20:22:05,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677077821] [2020-10-12 20:22:05,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 20:22:05,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:22:05,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 20:22:05,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 20:22:05,817 INFO L87 Difference]: Start difference. First operand 66250 states and 94217 transitions. Second operand 4 states. [2020-10-12 20:22:15,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:22:15,759 INFO L93 Difference]: Finished difference Result 141196 states and 204100 transitions. [2020-10-12 20:22:15,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 20:22:15,760 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 173 [2020-10-12 20:22:15,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:22:15,877 INFO L225 Difference]: With dead ends: 141196 [2020-10-12 20:22:15,877 INFO L226 Difference]: Without dead ends: 82332 [2020-10-12 20:22:15,916 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 20:22:15,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82332 states. [2020-10-12 20:22:21,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82332 to 79021. [2020-10-12 20:22:21,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79021 states. [2020-10-12 20:22:22,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79021 states to 79021 states and 113839 transitions. [2020-10-12 20:22:22,003 INFO L78 Accepts]: Start accepts. Automaton has 79021 states and 113839 transitions. Word has length 173 [2020-10-12 20:22:22,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:22:22,003 INFO L479 AbstractCegarLoop]: Abstraction has 79021 states and 113839 transitions. [2020-10-12 20:22:22,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 20:22:22,004 INFO L276 IsEmpty]: Start isEmpty. Operand 79021 states and 113839 transitions. [2020-10-12 20:22:22,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-12 20:22:22,024 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:22:22,024 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:22:22,024 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 20:22:22,025 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:22:22,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:22:22,025 INFO L82 PathProgramCache]: Analyzing trace with hash 2065974858, now seen corresponding path program 1 times [2020-10-12 20:22:22,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:22:22,025 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1833813754] [2020-10-12 20:22:22,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:22:22,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:22:22,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:22,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:22,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:22,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:22,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:22,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:27,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:22:27,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-12 20:22:27,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:22:27,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5096 [2020-10-12 20:22:27,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:22:27,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 20:22:27,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:22:27,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-10-12 20:22:27,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:22:27,665 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-12 20:22:27,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:22:27,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:22:27,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:27,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:22:27,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:22:27,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:22:27,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 20:22:27,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:22:27,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:22:27,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:22:27,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:22:27,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:22:27,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:22:27,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1833813754] [2020-10-12 20:22:27,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:22:27,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 20:22:27,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039649751] [2020-10-12 20:22:27,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 20:22:27,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:22:27,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 20:22:27,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-12 20:22:27,733 INFO L87 Difference]: Start difference. First operand 79021 states and 113839 transitions. Second operand 11 states. [2020-10-12 20:22:28,023 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 208