/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_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:32:43,812 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:32:43,816 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:32:43,847 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:32:43,847 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:32:43,848 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:32:43,850 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:32:43,851 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:32:43,853 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:32:43,854 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:32:43,855 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:32:43,856 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:32:43,857 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:32:43,858 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:32:43,859 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:32:43,860 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:32:43,861 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:32:43,862 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:32:43,864 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:32:43,867 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:32:43,868 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:32:43,870 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:32:43,871 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:32:43,872 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:32:43,875 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:32:43,875 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:32:43,875 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:32:43,877 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:32:43,877 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:32:43,878 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:32:43,878 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:32:43,879 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:32:43,880 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:32:43,881 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:32:43,882 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:32:43,883 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:32:43,883 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:32:43,884 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:32:43,884 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:32:43,885 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:32:43,886 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:32:43,887 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 18:32:43,913 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:32:43,913 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:32:43,914 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:32:43,915 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:32:43,915 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:32:43,915 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:32:43,915 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:32:43,915 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:32:43,916 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:32:43,916 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:32:43,916 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:32:43,916 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:32:43,916 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:32:43,917 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:32:43,917 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:32:43,917 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:32:43,917 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:32:43,917 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:32:43,918 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:32:43,918 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:32:43,918 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:32:43,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:32:43,918 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:32:43,919 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:32:43,919 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:32:43,919 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:32:43,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:32:43,920 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:32:43,920 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:32:43,920 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 18:32:44,367 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:32:44,393 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:32:44,398 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:32:44,400 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:32:44,401 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:32:44,402 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-09-24 18:32:44,492 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/48e4c811b/56f3047bea00410187c3e5bfe02fa5cd/FLAGd197a02da [2020-09-24 18:32:45,196 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:32:45,198 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-09-24 18:32:45,222 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/48e4c811b/56f3047bea00410187c3e5bfe02fa5cd/FLAGd197a02da [2020-09-24 18:32:45,348 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/48e4c811b/56f3047bea00410187c3e5bfe02fa5cd [2020-09-24 18:32:45,362 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:32:45,368 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:32:45,369 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:32:45,369 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:32:45,373 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:32:45,374 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:32:45" (1/1) ... [2020-09-24 18:32:45,379 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3360180b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:32:45, skipping insertion in model container [2020-09-24 18:32:45,379 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:32:45" (1/1) ... [2020-09-24 18:32:45,388 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:32:45,501 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:32:46,666 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:32:46,689 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:32:47,150 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:32:47,181 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:32:47,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:32:47 WrapperNode [2020-09-24 18:32:47,183 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:32:47,183 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:32:47,184 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:32:47,184 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:32:47,203 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:32:47" (1/1) ... [2020-09-24 18:32:47,205 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:32:47" (1/1) ... [2020-09-24 18:32:47,244 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:32:47" (1/1) ... [2020-09-24 18:32:47,251 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:32:47" (1/1) ... [2020-09-24 18:32:47,297 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:32:47" (1/1) ... [2020-09-24 18:32:47,333 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:32:47" (1/1) ... [2020-09-24 18:32:47,351 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:32:47" (1/1) ... [2020-09-24 18:32:47,380 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:32:47,381 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:32:47,382 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:32:47,382 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:32:47,384 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:32:47" (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 18:32:47,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:32:47,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:32:47,504 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 18:32:47,504 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:32:47,504 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:32:47,505 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-24 18:32:47,505 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-24 18:32:47,505 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-24 18:32:47,506 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 18:32:47,507 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 18:32:47,507 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-24 18:32:47,507 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-24 18:32:47,507 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-24 18:32:47,508 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-24 18:32:47,508 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-24 18:32:47,509 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-09-24 18:32:47,510 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-24 18:32:47,511 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-24 18:32:47,511 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:32:47,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:32:47,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:32:50,789 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:32:50,790 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 18:32:50,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:32:50 BoogieIcfgContainer [2020-09-24 18:32:50,809 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:32:50,813 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:32:50,813 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:32:50,818 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:32:50,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:32:45" (1/3) ... [2020-09-24 18:32:50,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48583b3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:32:50, skipping insertion in model container [2020-09-24 18:32:50,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:32:47" (2/3) ... [2020-09-24 18:32:50,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48583b3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:32:50, skipping insertion in model container [2020-09-24 18:32:50,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:32:50" (3/3) ... [2020-09-24 18:32:50,824 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-09-24 18:32:50,837 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:32:50,851 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:32:50,875 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:32:50,915 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:32:50,916 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:32:50,916 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:32:50,916 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:32:50,916 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:32:50,916 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:32:50,917 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:32:50,917 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:32:50,972 INFO L276 IsEmpty]: Start isEmpty. Operand 2022 states. [2020-09-24 18:32:51,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 933 [2020-09-24 18:32:51,074 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:32:51,077 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:32:51,077 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:32:51,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:32:51,086 INFO L82 PathProgramCache]: Analyzing trace with hash -272093385, now seen corresponding path program 1 times [2020-09-24 18:32:51,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:32:51,098 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [581698030] [2020-09-24 18:32:51,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:32:52,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:32:52,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:53,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:54,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:55,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:55,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:55,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:56,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:56,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:57,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:32:57,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 939 [2020-09-24 18:32:57,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 18:32:57,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-24 18:32:57,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:32:57,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:32:57,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 394 [2020-09-24 18:32:57,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 482 [2020-09-24 18:32:57,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 18:32:58,546 WARN L193 SmtUtils]: Spent 584.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-09-24 18:32:58,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:32:58,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:32:58,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:58,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:32:58,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-24 18:32:58,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:32:58,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-24 18:32:58,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:32:58,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:32:58,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:32:58,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:32:58,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:32:59,690 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 18:32:59,690 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [581698030] [2020-09-24 18:32:59,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:32:59,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:32:59,694 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600980292] [2020-09-24 18:32:59,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:32:59,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:32:59,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:32:59,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:32:59,723 INFO L87 Difference]: Start difference. First operand 2022 states. Second operand 4 states. [2020-09-24 18:33:08,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:33:08,703 INFO L93 Difference]: Finished difference Result 3529 states and 4643 transitions. [2020-09-24 18:33:08,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 18:33:08,705 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 932 [2020-09-24 18:33:08,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:33:08,769 INFO L225 Difference]: With dead ends: 3529 [2020-09-24 18:33:08,770 INFO L226 Difference]: Without dead ends: 2855 [2020-09-24 18:33:08,784 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:33:08,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2855 states. [2020-09-24 18:33:09,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2855 to 2842. [2020-09-24 18:33:09,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2842 states. [2020-09-24 18:33:09,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2842 states to 2842 states and 3559 transitions. [2020-09-24 18:33:09,049 INFO L78 Accepts]: Start accepts. Automaton has 2842 states and 3559 transitions. Word has length 932 [2020-09-24 18:33:09,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:33:09,054 INFO L479 AbstractCegarLoop]: Abstraction has 2842 states and 3559 transitions. [2020-09-24 18:33:09,054 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:33:09,055 INFO L276 IsEmpty]: Start isEmpty. Operand 2842 states and 3559 transitions. [2020-09-24 18:33:09,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 933 [2020-09-24 18:33:09,112 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:33:09,113 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:33:09,115 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:33:09,116 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:33:09,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:33:09,117 INFO L82 PathProgramCache]: Analyzing trace with hash 1335477111, now seen corresponding path program 1 times [2020-09-24 18:33:09,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:33:09,118 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [530855194] [2020-09-24 18:33:09,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:33:09,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:33:10,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:33:10,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:33:11,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:33:11,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:33:11,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:33:12,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:33:12,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:33:13,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:33:13,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:33:14,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:33:14,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:33:14,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 939 [2020-09-24 18:33:14,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 18:33:14,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5086 [2020-09-24 18:33:14,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:33:14,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:33:14,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-09-24 18:33:14,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-09-24 18:33:14,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:33:15,758 WARN L193 SmtUtils]: Spent 448.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-09-24 18:33:15,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:33:15,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:33:15,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:33:15,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:33:15,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-24 18:33:15,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:33:15,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-24 18:33:15,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:33:15,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:33:15,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:33:15,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:33:15,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:33:17,436 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 18:33:17,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [530855194] [2020-09-24 18:33:17,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:33:17,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 18:33:17,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854581099] [2020-09-24 18:33:17,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:33:17,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:33:17,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:33:17,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:33:17,443 INFO L87 Difference]: Start difference. First operand 2842 states and 3559 transitions. Second operand 5 states. [2020-09-24 18:33:29,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:33:29,683 INFO L93 Difference]: Finished difference Result 7826 states and 9934 transitions. [2020-09-24 18:33:29,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:33:29,683 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 932 [2020-09-24 18:33:29,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:33:29,709 INFO L225 Difference]: With dead ends: 7826 [2020-09-24 18:33:29,710 INFO L226 Difference]: Without dead ends: 5285 [2020-09-24 18:33:29,715 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 18:33:29,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5285 states. [2020-09-24 18:33:29,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5285 to 5283. [2020-09-24 18:33:29,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5283 states. [2020-09-24 18:33:29,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5283 states to 5283 states and 6660 transitions. [2020-09-24 18:33:29,859 INFO L78 Accepts]: Start accepts. Automaton has 5283 states and 6660 transitions. Word has length 932 [2020-09-24 18:33:29,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:33:29,860 INFO L479 AbstractCegarLoop]: Abstraction has 5283 states and 6660 transitions. [2020-09-24 18:33:29,861 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:33:29,861 INFO L276 IsEmpty]: Start isEmpty. Operand 5283 states and 6660 transitions. [2020-09-24 18:33:29,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 935 [2020-09-24 18:33:29,876 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:33:29,877 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:33:29,877 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:33:29,877 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:33:29,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:33:29,878 INFO L82 PathProgramCache]: Analyzing trace with hash -1878555788, now seen corresponding path program 1 times [2020-09-24 18:33:29,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:33:29,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [756952660] [2020-09-24 18:33:29,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:33:30,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:33:30,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:33:30,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:33:30,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:33:31,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:33:31,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:33:31,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:33:32,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:33:32,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:33:33,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:33:33,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking...