/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=SMALLEST --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.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:31:52,084 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:31:52,089 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:31:52,127 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:31:52,128 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:31:52,129 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:31:52,131 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:31:52,133 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:31:52,134 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:31:52,135 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:31:52,136 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:31:52,138 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:31:52,138 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:31:52,139 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:31:52,140 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:31:52,141 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:31:52,142 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:31:52,143 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:31:52,145 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:31:52,147 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:31:52,148 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:31:52,150 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:31:52,151 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:31:52,152 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:31:52,154 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:31:52,155 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:31:52,155 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:31:52,156 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:31:52,156 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:31:52,157 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:31:52,158 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:31:52,159 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:31:52,159 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:31:52,160 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:31:52,161 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:31:52,162 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:31:52,162 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:31:52,163 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:31:52,163 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:31:52,164 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:31:52,165 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:31:52,166 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 [2020-09-24 18:31:52,191 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:31:52,191 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:31:52,193 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:31:52,193 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:31:52,193 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:31:52,193 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:31:52,194 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:31:52,194 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:31:52,194 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:31:52,194 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:31:52,194 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:31:52,195 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:31:52,195 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:31:52,195 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:31:52,195 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:31:52,195 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:31:52,196 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:31:52,196 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:31:52,196 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:31:52,196 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:31:52,196 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:31:52,197 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:31:52,197 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:31:52,197 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:31:52,197 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:31:52,198 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:31:52,198 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:31:52,198 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:31:52,198 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:31:52,198 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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;log-additional-information=true; [2020-09-24 18:31:52,668 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:31:52,691 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:31:52,695 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:31:52,699 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:31:52,699 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:31:52,700 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-09-24 18:31:52,778 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5be419b73/ffe44e7ac6154ae3ac24b0e3d3983b7d/FLAG2b5c4441f [2020-09-24 18:31:53,444 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:31:53,445 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-09-24 18:31:53,461 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5be419b73/ffe44e7ac6154ae3ac24b0e3d3983b7d/FLAG2b5c4441f [2020-09-24 18:31:53,606 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5be419b73/ffe44e7ac6154ae3ac24b0e3d3983b7d [2020-09-24 18:31:53,621 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:31:53,630 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:31:53,633 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:31:53,633 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:31:53,637 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:31:53,639 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:31:53" (1/1) ... [2020-09-24 18:31:53,644 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17866592 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:31:53, skipping insertion in model container [2020-09-24 18:31:53,644 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:31:53" (1/1) ... [2020-09-24 18:31:53,654 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:31:53,755 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:31:54,404 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:31:54,418 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:31:54,876 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:31:54,900 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:31:54,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:31:54 WrapperNode [2020-09-24 18:31:54,901 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:31:54,902 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:31:54,902 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:31:54,902 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:31:54,921 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:31:54" (1/1) ... [2020-09-24 18:31:54,921 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:31:54" (1/1) ... [2020-09-24 18:31:54,946 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:31:54" (1/1) ... [2020-09-24 18:31:54,947 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:31:54" (1/1) ... [2020-09-24 18:31:54,981 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:31:54" (1/1) ... [2020-09-24 18:31:55,038 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:31:54" (1/1) ... [2020-09-24 18:31:55,053 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:31:54" (1/1) ... [2020-09-24 18:31:55,064 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:31:55,064 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:31:55,065 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:31:55,065 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:31:55,066 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:31:54" (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 [2020-09-24 18:31:55,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:31:55,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:31:55,184 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 18:31:55,184 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:31:55,185 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:31:55,186 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-24 18:31:55,186 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-24 18:31:55,186 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-24 18:31:55,187 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 18:31:55,187 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 18:31:55,188 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-24 18:31:55,188 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-24 18:31:55,188 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-24 18:31:55,189 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-24 18:31:55,189 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-24 18:31:55,190 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-24 18:31:55,190 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-24 18:31:55,191 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:31:55,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:31:55,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:31:57,364 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:31:57,364 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 18:31:57,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:31:57 BoogieIcfgContainer [2020-09-24 18:31:57,389 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:31:57,391 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:31:57,391 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:31:57,397 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:31:57,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:31:53" (1/3) ... [2020-09-24 18:31:57,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@139732f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:31:57, skipping insertion in model container [2020-09-24 18:31:57,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:31:54" (2/3) ... [2020-09-24 18:31:57,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@139732f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:31:57, skipping insertion in model container [2020-09-24 18:31:57,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:31:57" (3/3) ... [2020-09-24 18:31:57,402 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-09-24 18:31:57,412 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:31:57,426 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-09-24 18:31:57,445 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-09-24 18:31:57,477 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:31:57,477 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:31:57,477 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:31:57,478 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:31:57,478 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:31:57,478 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:31:57,478 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:31:57,478 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:31:57,519 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states. [2020-09-24 18:31:57,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2020-09-24 18:31:57,562 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:31:57,564 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, 1, 1, 1, 1, 1, 1] [2020-09-24 18:31:57,565 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:31:57,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:31:57,573 INFO L82 PathProgramCache]: Analyzing trace with hash -219806221, now seen corresponding path program 1 times [2020-09-24 18:31:57,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:31:57,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [387175156] [2020-09-24 18:31:57,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:31:58,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:58,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:58,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:58,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:59,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:59,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:59,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:59,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:03,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:32:03,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 430 [2020-09-24 18:32:03,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:32:03,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-09-24 18:32:03,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:32:03,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:32:03,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 203 [2020-09-24 18:32:03,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-09-24 18:32:03,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 18:32:03,785 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 18:32:03,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:32:03,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:32:03,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:03,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:32:03,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-24 18:32:03,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:32:03,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-24 18:32:03,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:32:03,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:32:03,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:32:03,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:32:03,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:32:04,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:32:04,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [387175156] [2020-09-24 18:32:04,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:32:04,271 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:32:04,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238098956] [2020-09-24 18:32:04,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:32:04,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:32:04,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:32:04,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:32:04,306 INFO L87 Difference]: Start difference. First operand 1127 states. Second operand 4 states. [2020-09-24 18:32:08,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:32:08,991 INFO L93 Difference]: Finished difference Result 1833 states and 2360 transitions. [2020-09-24 18:32:08,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 18:32:08,994 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 423 [2020-09-24 18:32:08,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:32:09,039 INFO L225 Difference]: With dead ends: 1833 [2020-09-24 18:32:09,040 INFO L226 Difference]: Without dead ends: 1303 [2020-09-24 18:32:09,052 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:32:09,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1303 states. [2020-09-24 18:32:09,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1303 to 1296. [2020-09-24 18:32:09,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1296 states. [2020-09-24 18:32:09,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1296 states to 1296 states and 1545 transitions. [2020-09-24 18:32:09,199 INFO L78 Accepts]: Start accepts. Automaton has 1296 states and 1545 transitions. Word has length 423 [2020-09-24 18:32:09,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:32:09,201 INFO L479 AbstractCegarLoop]: Abstraction has 1296 states and 1545 transitions. [2020-09-24 18:32:09,201 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:32:09,201 INFO L276 IsEmpty]: Start isEmpty. Operand 1296 states and 1545 transitions. [2020-09-24 18:32:09,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2020-09-24 18:32:09,211 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:32:09,212 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, 1, 1, 1, 1, 1, 1] [2020-09-24 18:32:09,212 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:32:09,213 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:32:09,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:32:09,213 INFO L82 PathProgramCache]: Analyzing trace with hash -74379501, now seen corresponding path program 1 times [2020-09-24 18:32:09,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:32:09,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2133542216] [2020-09-24 18:32:09,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:32:09,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:32:09,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:09,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:09,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:10,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:10,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:10,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:13,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:14,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:14,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:14,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:32:14,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 430 [2020-09-24 18:32:14,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 18:32:14,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5122 [2020-09-24 18:32:14,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:32:14,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:32:14,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-09-24 18:32:14,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 18:32:14,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:32:15,208 WARN L193 SmtUtils]: Spent 462.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 18:32:15,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:32:15,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:32:15,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:15,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:32:15,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-24 18:32:15,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:32:15,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-24 18:32:15,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:32:15,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:32:15,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:32:15,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:32:15,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:32:15,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:32:15,588 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2133542216] [2020-09-24 18:32:15,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:32:15,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 18:32:15,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952672052] [2020-09-24 18:32:15,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:32:15,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:32:15,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:32:15,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:32:15,594 INFO L87 Difference]: Start difference. First operand 1296 states and 1545 transitions. Second operand 5 states. [2020-09-24 18:32:22,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:32:22,382 INFO L93 Difference]: Finished difference Result 3349 states and 4041 transitions. [2020-09-24 18:32:22,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:32:22,388 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 423 [2020-09-24 18:32:22,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:32:22,400 INFO L225 Difference]: With dead ends: 3349 [2020-09-24 18:32:22,401 INFO L226 Difference]: Without dead ends: 2342 [2020-09-24 18:32:22,403 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:32:22,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2342 states. [2020-09-24 18:32:22,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2342 to 2234. [2020-09-24 18:32:22,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2234 states. [2020-09-24 18:32:22,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2234 states to 2234 states and 2698 transitions. [2020-09-24 18:32:22,493 INFO L78 Accepts]: Start accepts. Automaton has 2234 states and 2698 transitions. Word has length 423 [2020-09-24 18:32:22,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:32:22,494 INFO L479 AbstractCegarLoop]: Abstraction has 2234 states and 2698 transitions. [2020-09-24 18:32:22,494 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:32:22,494 INFO L276 IsEmpty]: Start isEmpty. Operand 2234 states and 2698 transitions. [2020-09-24 18:32:22,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2020-09-24 18:32:22,505 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:32:22,506 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, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:32:22,506 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:32:22,506 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:32:22,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:32:22,507 INFO L82 PathProgramCache]: Analyzing trace with hash -1608724225, now seen corresponding path program 1 times [2020-09-24 18:32:22,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:32:22,508 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1594875499] [2020-09-24 18:32:22,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:32:22,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:32:22,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:22,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:22,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:23,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:23,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:23,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:26,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:26,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:27,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:32:27,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 431 [2020-09-24 18:32:27,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 18:32:27,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-24 18:32:27,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:32:27,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:32:27,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 182 [2020-09-24 18:32:27,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 18:32:27,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:32:27,984 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 18:32:27,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:32:27,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:32:28,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:28,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:32:28,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-24 18:32:28,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:32:28,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-24 18:32:28,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:32:28,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:32:28,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:32:28,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:32:28,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:32:28,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:32:28,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1594875499] [2020-09-24 18:32:28,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:32:28,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:32:28,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097752832] [2020-09-24 18:32:28,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:32:28,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:32:28,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:32:28,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:32:28,233 INFO L87 Difference]: Start difference. First operand 2234 states and 2698 transitions. Second operand 4 states. [2020-09-24 18:32:34,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:32:34,307 INFO L93 Difference]: Finished difference Result 6287 states and 7649 transitions. [2020-09-24 18:32:34,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 18:32:34,308 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 424 [2020-09-24 18:32:34,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:32:34,328 INFO L225 Difference]: With dead ends: 6287 [2020-09-24 18:32:34,329 INFO L226 Difference]: Without dead ends: 4263 [2020-09-24 18:32:34,333 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:32:34,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4263 states. [2020-09-24 18:32:34,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4263 to 2240. [2020-09-24 18:32:34,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2240 states. [2020-09-24 18:32:34,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2240 states to 2240 states and 2706 transitions. [2020-09-24 18:32:34,472 INFO L78 Accepts]: Start accepts. Automaton has 2240 states and 2706 transitions. Word has length 424 [2020-09-24 18:32:34,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:32:34,472 INFO L479 AbstractCegarLoop]: Abstraction has 2240 states and 2706 transitions. [2020-09-24 18:32:34,472 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:32:34,472 INFO L276 IsEmpty]: Start isEmpty. Operand 2240 states and 2706 transitions. [2020-09-24 18:32:34,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2020-09-24 18:32:34,478 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:32:34,479 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:32:34,479 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:32:34,479 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:32:34,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:32:34,481 INFO L82 PathProgramCache]: Analyzing trace with hash -698879683, now seen corresponding path program 1 times [2020-09-24 18:32:34,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:32:34,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1630061567] [2020-09-24 18:32:34,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:32:34,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:32:34,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:34,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:35,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:35,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:35,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:36,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:36,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:39,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:39,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:32:39,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 432 [2020-09-24 18:32:39,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 18:32:39,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 18:32:39,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:32:39,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:32:39,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 171 [2020-09-24 18:32:39,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-24 18:32:39,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:32:40,128 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 18:32:40,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:32:40,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:32:40,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:40,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:32:40,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-24 18:32:40,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:32:40,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-24 18:32:40,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:32:40,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:32:40,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:32:40,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:32:40,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:32:40,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:32:40,506 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1630061567] [2020-09-24 18:32:40,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:32:40,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 18:32:40,507 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871629994] [2020-09-24 18:32:40,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:32:40,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:32:40,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:32:40,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:32:40,509 INFO L87 Difference]: Start difference. First operand 2240 states and 2706 transitions. Second operand 5 states.