/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 00:07:29,858 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 00:07:29,864 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 00:07:29,906 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 00:07:29,907 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 00:07:29,915 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 00:07:29,917 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 00:07:29,921 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 00:07:29,924 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 00:07:29,927 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 00:07:29,928 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 00:07:29,929 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 00:07:29,929 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 00:07:29,932 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 00:07:29,935 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 00:07:29,936 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 00:07:29,938 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 00:07:29,940 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 00:07:29,942 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 00:07:29,950 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 00:07:29,952 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 00:07:29,953 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 00:07:29,954 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 00:07:29,955 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 00:07:29,958 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 00:07:29,958 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 00:07:29,958 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 00:07:29,962 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 00:07:29,963 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 00:07:29,964 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 00:07:29,964 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 00:07:29,966 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 00:07:29,967 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 00:07:29,971 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 00:07:29,972 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 00:07:29,973 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 00:07:29,973 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 00:07:29,974 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 00:07:29,974 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 00:07:29,975 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 00:07:29,976 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 00:07:29,977 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 00:07:30,001 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 00:07:30,002 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 00:07:30,003 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 00:07:30,003 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 00:07:30,003 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 00:07:30,004 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 00:07:30,004 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 00:07:30,004 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 00:07:30,004 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 00:07:30,004 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 00:07:30,005 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 00:07:30,005 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 00:07:30,005 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 00:07:30,005 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 00:07:30,005 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 00:07:30,006 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 00:07:30,006 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 00:07:30,006 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 00:07:30,006 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 00:07:30,006 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 00:07:30,007 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 00:07:30,007 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 00:07:30,007 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 00:07:30,007 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 00:07:30,007 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 00:07:30,008 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 00:07:30,008 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 00:07:30,008 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 00:07:30,011 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 00:07:30,011 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; [2020-09-25 00:07:30,456 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 00:07:30,473 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 00:07:30,477 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 00:07:30,479 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 00:07:30,479 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 00:07:30,480 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-25 00:07:30,568 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e4e277ddf/d05aee7785064e81b0817826183a15d6/FLAGbe20ff367 [2020-09-25 00:07:31,222 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 00:07:31,223 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-25 00:07:31,249 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e4e277ddf/d05aee7785064e81b0817826183a15d6/FLAGbe20ff367 [2020-09-25 00:07:31,534 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e4e277ddf/d05aee7785064e81b0817826183a15d6 [2020-09-25 00:07:31,548 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 00:07:31,555 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 00:07:31,556 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 00:07:31,556 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 00:07:31,560 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 00:07:31,562 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:07:31" (1/1) ... [2020-09-25 00:07:31,566 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ef7a733 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:07:31, skipping insertion in model container [2020-09-25 00:07:31,566 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:07:31" (1/1) ... [2020-09-25 00:07:31,575 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 00:07:31,666 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 00:07:32,292 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:07:32,322 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 00:07:32,770 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:07:32,798 INFO L208 MainTranslator]: Completed translation [2020-09-25 00:07:32,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:07:32 WrapperNode [2020-09-25 00:07:32,798 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 00:07:32,799 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 00:07:32,799 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 00:07:32,799 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 00:07:32,815 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:07:32" (1/1) ... [2020-09-25 00:07:32,815 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:07:32" (1/1) ... [2020-09-25 00:07:32,837 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:07:32" (1/1) ... [2020-09-25 00:07:32,837 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:07:32" (1/1) ... [2020-09-25 00:07:32,871 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:07:32" (1/1) ... [2020-09-25 00:07:32,899 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:07:32" (1/1) ... [2020-09-25 00:07:32,906 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:07:32" (1/1) ... [2020-09-25 00:07:32,916 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 00:07:32,916 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 00:07:32,916 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 00:07:32,917 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 00:07:32,918 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:07:32" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 00:07:33,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 00:07:33,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 00:07:33,011 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 00:07:33,011 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 00:07:33,012 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 00:07:33,012 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 00:07:33,012 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-09-25 00:07:33,012 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-25 00:07:33,013 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-25 00:07:33,013 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 00:07:33,013 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 00:07:33,013 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-25 00:07:33,014 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-25 00:07:33,014 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-25 00:07:33,014 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-25 00:07:33,014 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-25 00:07:33,015 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-25 00:07:33,015 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-25 00:07:33,015 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 00:07:33,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 00:07:33,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 00:07:35,155 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 00:07:35,155 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 00:07:35,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:07:35 BoogieIcfgContainer [2020-09-25 00:07:35,169 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 00:07:35,174 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 00:07:35,175 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 00:07:35,180 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 00:07:35,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:07:31" (1/3) ... [2020-09-25 00:07:35,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45b1d924 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:07:35, skipping insertion in model container [2020-09-25 00:07:35,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:07:32" (2/3) ... [2020-09-25 00:07:35,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45b1d924 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:07:35, skipping insertion in model container [2020-09-25 00:07:35,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:07:35" (3/3) ... [2020-09-25 00:07:35,188 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-25 00:07:35,200 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 00:07:35,211 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-09-25 00:07:35,234 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-09-25 00:07:35,265 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 00:07:35,265 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 00:07:35,265 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 00:07:35,266 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 00:07:35,266 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 00:07:35,266 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 00:07:35,266 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 00:07:35,266 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 00:07:35,307 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states. [2020-09-25 00:07:35,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2020-09-25 00:07:35,345 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:07:35,347 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:07:35,348 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:07:35,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:07:35,356 INFO L82 PathProgramCache]: Analyzing trace with hash -1272027086, now seen corresponding path program 1 times [2020-09-25 00:07:35,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:07:35,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [623877768] [2020-09-25 00:07:35,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:07:35,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:07:36,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:36,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:36,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:36,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:37,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:37,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:37,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:37,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:40,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:07:40,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 421 [2020-09-25 00:07:40,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 00:07:40,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-09-25 00:07:40,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:07:40,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 00:07:40,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 165 [2020-09-25 00:07:40,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 00:07:40,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 00:07:41,630 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 00:07:41,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:07:41,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:07:41,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:41,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:07:41,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 00:07:41,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:07:41,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-25 00:07:41,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:07:41,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:07:41,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:07:41,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:07:41,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:07:42,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:07:42,021 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [623877768] [2020-09-25 00:07:42,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:07:42,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 00:07:42,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533837231] [2020-09-25 00:07:42,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 00:07:42,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:07:42,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 00:07:42,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 00:07:42,056 INFO L87 Difference]: Start difference. First operand 1123 states. Second operand 5 states. [2020-09-25 00:07:50,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:07:50,884 INFO L93 Difference]: Finished difference Result 2939 states and 3816 transitions. [2020-09-25 00:07:50,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 00:07:50,887 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 414 [2020-09-25 00:07:50,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:07:50,922 INFO L225 Difference]: With dead ends: 2939 [2020-09-25 00:07:50,923 INFO L226 Difference]: Without dead ends: 1752 [2020-09-25 00:07:50,933 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 [2020-09-25 00:07:50,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1752 states. [2020-09-25 00:07:51,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1752 to 1629. [2020-09-25 00:07:51,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1629 states. [2020-09-25 00:07:51,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1629 states to 1629 states and 1939 transitions. [2020-09-25 00:07:51,102 INFO L78 Accepts]: Start accepts. Automaton has 1629 states and 1939 transitions. Word has length 414 [2020-09-25 00:07:51,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:07:51,108 INFO L479 AbstractCegarLoop]: Abstraction has 1629 states and 1939 transitions. [2020-09-25 00:07:51,108 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 00:07:51,108 INFO L276 IsEmpty]: Start isEmpty. Operand 1629 states and 1939 transitions. [2020-09-25 00:07:51,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2020-09-25 00:07:51,123 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:07:51,124 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:07:51,124 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 00:07:51,125 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:07:51,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:07:51,126 INFO L82 PathProgramCache]: Analyzing trace with hash -993206244, now seen corresponding path program 1 times [2020-09-25 00:07:51,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:07:51,127 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1607266876] [2020-09-25 00:07:51,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:07:51,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:07:51,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:51,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:51,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:51,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:52,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:52,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:53,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:55,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:55,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:56,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:07:56,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 422 [2020-09-25 00:07:56,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 00:07:56,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-09-25 00:07:56,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:07:56,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 00:07:56,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 167 [2020-09-25 00:07:56,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-09-25 00:07:56,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:07:56,839 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 00:07:56,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:07:56,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:07:56,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:56,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:07:56,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 00:07:56,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:07:56,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-25 00:07:56,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:07:56,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:07:56,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:07:56,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:07:56,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:07:57,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:07:57,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1607266876] [2020-09-25 00:07:57,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:07:57,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 00:07:57,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654041095] [2020-09-25 00:07:57,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 00:07:57,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:07:57,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 00:07:57,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 00:07:57,202 INFO L87 Difference]: Start difference. First operand 1629 states and 1939 transitions. Second operand 5 states. [2020-09-25 00:08:04,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:08:04,011 INFO L93 Difference]: Finished difference Result 4401 states and 5277 transitions. [2020-09-25 00:08:04,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 00:08:04,012 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 415 [2020-09-25 00:08:04,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:08:04,028 INFO L225 Difference]: With dead ends: 4401 [2020-09-25 00:08:04,029 INFO L226 Difference]: Without dead ends: 2986 [2020-09-25 00:08:04,033 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 [2020-09-25 00:08:04,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2986 states. [2020-09-25 00:08:04,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2986 to 2863. [2020-09-25 00:08:04,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2863 states. [2020-09-25 00:08:04,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2863 states to 2863 states and 3433 transitions. [2020-09-25 00:08:04,186 INFO L78 Accepts]: Start accepts. Automaton has 2863 states and 3433 transitions. Word has length 415 [2020-09-25 00:08:04,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:08:04,187 INFO L479 AbstractCegarLoop]: Abstraction has 2863 states and 3433 transitions. [2020-09-25 00:08:04,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 00:08:04,187 INFO L276 IsEmpty]: Start isEmpty. Operand 2863 states and 3433 transitions. [2020-09-25 00:08:04,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2020-09-25 00:08:04,195 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:08:04,195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:08:04,196 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 00:08:04,196 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:08:04,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:08:04,197 INFO L82 PathProgramCache]: Analyzing trace with hash 702388870, now seen corresponding path program 1 times [2020-09-25 00:08:04,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:08:04,197 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2137090387] [2020-09-25 00:08:04,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:08:04,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:08:04,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:04,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:04,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:04,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:04,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:05,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:07,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:07,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:08,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:08,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:09,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:09,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:08:09,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 423 [2020-09-25 00:08:09,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 00:08:09,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-09-25 00:08:09,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:08:09,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 00:08:09,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 168 [2020-09-25 00:08:09,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 00:08:09,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:08:09,731 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 00:08:09,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:08:09,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:08:09,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:09,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:08:09,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 00:08:09,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:08:09,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 00:08:09,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:08:09,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:08:09,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:08:09,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:08:09,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:08:10,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:08:10,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2137090387] [2020-09-25 00:08:10,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:08:10,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 00:08:10,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530022002] [2020-09-25 00:08:10,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 00:08:10,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:08:10,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 00:08:10,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 00:08:10,089 INFO L87 Difference]: Start difference. First operand 2863 states and 3433 transitions. Second operand 5 states. [2020-09-25 00:08:16,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:08:16,865 INFO L93 Difference]: Finished difference Result 7687 states and 9261 transitions. [2020-09-25 00:08:16,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 00:08:16,866 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 416 [2020-09-25 00:08:16,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:08:16,889 INFO L225 Difference]: With dead ends: 7687 [2020-09-25 00:08:16,889 INFO L226 Difference]: Without dead ends: 5368 [2020-09-25 00:08:16,895 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 [2020-09-25 00:08:16,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5368 states. [2020-09-25 00:08:17,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5368 to 5260. [2020-09-25 00:08:17,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5260 states. [2020-09-25 00:08:17,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5260 states to 5260 states and 6313 transitions. [2020-09-25 00:08:17,101 INFO L78 Accepts]: Start accepts. Automaton has 5260 states and 6313 transitions. Word has length 416 [2020-09-25 00:08:17,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:08:17,102 INFO L479 AbstractCegarLoop]: Abstraction has 5260 states and 6313 transitions. [2020-09-25 00:08:17,102 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 00:08:17,102 INFO L276 IsEmpty]: Start isEmpty. Operand 5260 states and 6313 transitions. [2020-09-25 00:08:17,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2020-09-25 00:08:17,114 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:08:17,115 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:08:17,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 00:08:17,120 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:08:17,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:08:17,121 INFO L82 PathProgramCache]: Analyzing trace with hash -1040451672, now seen corresponding path program 1 times [2020-09-25 00:08:17,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:08:17,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1194666058] [2020-09-25 00:08:17,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:08:17,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:08:17,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:17,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:17,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:17,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:17,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:18,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:19,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:19,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:19,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:20,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking...