/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --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.5.4.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:21:11,183 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:21:11,187 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:21:11,231 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:21:11,231 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:21:11,239 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:21:11,242 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:21:11,245 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:21:11,248 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:21:11,251 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:21:11,252 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:21:11,253 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:21:11,253 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:21:11,256 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:21:11,258 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:21:11,260 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:21:11,262 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:21:11,263 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:21:11,264 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:21:11,274 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:21:11,277 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:21:11,278 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:21:11,279 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:21:11,279 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:21:11,293 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:21:11,293 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:21:11,294 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:21:11,295 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:21:11,295 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:21:11,296 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:21:11,296 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:21:11,297 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:21:11,298 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:21:11,299 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:21:11,300 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:21:11,300 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:21:11,301 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:21:11,301 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:21:11,301 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:21:11,302 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:21:11,303 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:21:11,303 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 10:21:11,332 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:21:11,332 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:21:11,334 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:21:11,334 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:21:11,334 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:21:11,334 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:21:11,334 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:21:11,335 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:21:11,335 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:21:11,335 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:21:11,335 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:21:11,335 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:21:11,336 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:21:11,336 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:21:11,336 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:21:11,336 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:21:11,337 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:21:11,337 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:21:11,337 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:21:11,337 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:21:11,337 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:21:11,338 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:21:11,338 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:21:11,338 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:21:11,338 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:21:11,338 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:21:11,339 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:21:11,339 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:21:11,339 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:21:11,339 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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-09-25 10:21:11,767 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:21:11,782 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:21:11,786 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:21:11,788 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:21:11,789 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:21:11,790 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-09-25 10:21:11,876 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/905490037/785f8129a4f04c56bedecd4ad8966ac7/FLAGadf864ef2 [2020-09-25 10:21:12,733 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:21:12,734 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-09-25 10:21:12,775 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/905490037/785f8129a4f04c56bedecd4ad8966ac7/FLAGadf864ef2 [2020-09-25 10:21:13,232 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/905490037/785f8129a4f04c56bedecd4ad8966ac7 [2020-09-25 10:21:13,244 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:21:13,249 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:21:13,250 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:21:13,250 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:21:13,259 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:21:13,260 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:21:13" (1/1) ... [2020-09-25 10:21:13,265 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@288b8053 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:21:13, skipping insertion in model container [2020-09-25 10:21:13,265 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:21:13" (1/1) ... [2020-09-25 10:21:13,274 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:21:13,554 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:21:16,094 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:21:16,109 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:21:17,812 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:21:17,849 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:21:17,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:21:17 WrapperNode [2020-09-25 10:21:17,850 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:21:17,850 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:21:17,851 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:21:17,851 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:21:17,877 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:21:17" (1/1) ... [2020-09-25 10:21:17,878 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:21:17" (1/1) ... [2020-09-25 10:21:17,928 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:21:17" (1/1) ... [2020-09-25 10:21:17,929 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:21:17" (1/1) ... [2020-09-25 10:21:18,024 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:21:17" (1/1) ... [2020-09-25 10:21:18,088 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:21:17" (1/1) ... [2020-09-25 10:21:18,109 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:21:17" (1/1) ... [2020-09-25 10:21:18,139 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:21:18,139 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:21:18,139 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:21:18,140 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:21:18,141 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:21:17" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:21:18,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:21:18,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:21:18,304 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 10:21:18,305 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:21:18,305 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:21:18,305 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 10:21:18,305 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-25 10:21:18,306 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-25 10:21:18,307 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 10:21:18,307 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 10:21:18,307 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-25 10:21:18,307 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-25 10:21:18,307 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-25 10:21:18,308 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-25 10:21:18,308 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-25 10:21:18,309 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-09-25 10:21:18,309 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-09-25 10:21:18,310 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-25 10:21:18,310 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-25 10:21:18,310 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:21:18,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:21:18,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:21:26,102 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:21:26,103 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 10:21:26,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:21:26 BoogieIcfgContainer [2020-09-25 10:21:26,138 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:21:26,144 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:21:26,144 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:21:26,150 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:21:26,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:21:13" (1/3) ... [2020-09-25 10:21:26,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b2e4d7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:21:26, skipping insertion in model container [2020-09-25 10:21:26,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:21:17" (2/3) ... [2020-09-25 10:21:26,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b2e4d7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:21:26, skipping insertion in model container [2020-09-25 10:21:26,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:21:26" (3/3) ... [2020-09-25 10:21:26,158 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-09-25 10:21:26,174 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:21:26,196 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-09-25 10:21:26,228 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-09-25 10:21:26,305 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:21:26,305 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:21:26,305 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:21:26,306 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:21:26,306 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:21:26,306 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:21:26,307 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:21:26,307 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:21:26,433 INFO L276 IsEmpty]: Start isEmpty. Operand 5254 states. [2020-09-25 10:21:26,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1307 [2020-09-25 10:21:26,649 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:21:26,655 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:21:26,656 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:21:26,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:21:26,672 INFO L82 PathProgramCache]: Analyzing trace with hash 472805393, now seen corresponding path program 1 times [2020-09-25 10:21:26,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:21:26,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2054898852] [2020-09-25 10:21:26,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:21:28,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:21:28,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:21:29,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:21:30,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:21:31,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:21:31,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:21:32,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:21:33,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:21:33,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1313 [2020-09-25 10:21:33,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:21:33,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5151 [2020-09-25 10:21:33,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:21:33,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:21:33,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:21:33,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 700 [2020-09-25 10:21:33,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 10:21:33,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 10:21:34,325 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2020-09-25 10:21:35,341 WARN L193 SmtUtils]: Spent 981.00 ms on a formula simplification that was a NOOP. DAG size: 409 [2020-09-25 10:21:35,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:21:35,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:21:35,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:21:35,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:21:35,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-25 10:21:35,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:21:35,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-09-25 10:21:35,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:21:35,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:21:35,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:21:35,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:21:35,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:21:35,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:21:38,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:21:38,343 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2054898852] [2020-09-25 10:21:38,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:21:38,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:21:38,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834481311] [2020-09-25 10:21:38,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:21:38,358 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:21:38,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:21:38,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:21:38,380 INFO L87 Difference]: Start difference. First operand 5254 states. Second operand 4 states.