/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.5.4.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:33:32,718 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:33:32,722 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:33:32,763 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:33:32,764 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:33:32,775 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:33:32,778 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:33:32,782 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:33:32,786 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:33:32,790 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:33:32,791 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:33:32,793 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:33:32,793 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:33:32,797 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:33:32,800 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:33:32,804 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:33:32,806 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:33:32,807 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:33:32,809 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:33:32,815 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:33:32,819 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:33:32,820 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:33:32,821 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:33:32,822 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:33:32,827 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:33:32,828 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:33:32,828 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:33:32,831 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:33:32,832 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:33:32,834 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:33:32,834 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:33:32,835 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:33:32,836 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:33:32,837 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:33:32,838 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:33:32,838 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:33:32,839 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:33:32,839 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:33:32,840 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:33:32,841 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:33:32,843 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:33:32,843 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 18:33:32,889 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:33:32,890 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:33:32,891 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:33:32,891 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:33:32,892 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:33:32,892 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:33:32,892 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:33:32,893 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:33:32,893 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:33:32,893 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:33:32,893 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:33:32,893 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:33:32,894 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:33:32,894 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:33:32,894 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:33:32,894 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:33:32,894 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:33:32,895 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:33:32,895 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:33:32,895 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:33:32,895 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:33:32,896 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:33:32,897 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:33:32,897 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:33:32,898 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:33:32,898 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:33:32,898 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:33:32,898 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:33:32,899 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:33:32,899 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 18:33:33,379 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:33:33,396 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:33:33,401 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:33:33,403 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:33:33,403 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:33:33,405 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-09-24 18:33:33,486 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef4632ec0/0d66d04f430249b3ad2ae133ad2056f2/FLAG7cf9b2f9a [2020-09-24 18:33:34,281 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:33:34,282 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-09-24 18:33:34,317 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef4632ec0/0d66d04f430249b3ad2ae133ad2056f2/FLAG7cf9b2f9a [2020-09-24 18:33:34,373 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef4632ec0/0d66d04f430249b3ad2ae133ad2056f2 [2020-09-24 18:33:34,386 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:33:34,393 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:33:34,395 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:33:34,395 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:33:34,399 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:33:34,401 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:33:34" (1/1) ... [2020-09-24 18:33:34,405 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ee4d01a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:33:34, skipping insertion in model container [2020-09-24 18:33:34,406 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:33:34" (1/1) ... [2020-09-24 18:33:34,415 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:33:34,684 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:33:37,108 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:33:37,124 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:33:38,852 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:33:38,895 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:33:38,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:33:38 WrapperNode [2020-09-24 18:33:38,896 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:33:38,897 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:33:38,897 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:33:38,898 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:33:38,926 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:33:38" (1/1) ... [2020-09-24 18:33:38,926 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:33:38" (1/1) ... [2020-09-24 18:33:38,978 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:33:38" (1/1) ... [2020-09-24 18:33:38,979 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:33:38" (1/1) ... [2020-09-24 18:33:39,081 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:33:38" (1/1) ... [2020-09-24 18:33:39,149 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:33:38" (1/1) ... [2020-09-24 18:33:39,178 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:33:38" (1/1) ... [2020-09-24 18:33:39,211 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:33:39,212 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:33:39,212 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:33:39,213 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:33:39,214 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:33:38" (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 18:33:39,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:33:39,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:33:39,378 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 18:33:39,379 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:33:39,379 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:33:39,379 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-24 18:33:39,379 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-24 18:33:39,380 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-24 18:33:39,380 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 18:33:39,380 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 18:33:39,380 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-24 18:33:39,380 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-24 18:33:39,381 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-24 18:33:39,381 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-24 18:33:39,381 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-24 18:33:39,381 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-09-24 18:33:39,382 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-09-24 18:33:39,382 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-24 18:33:39,382 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-24 18:33:39,383 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:33:39,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:33:39,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:33:48,851 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:33:48,852 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 18:33:48,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:33:48 BoogieIcfgContainer [2020-09-24 18:33:48,886 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:33:48,889 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:33:48,889 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:33:48,894 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:33:48,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:33:34" (1/3) ... [2020-09-24 18:33:48,896 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31742b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:33:48, skipping insertion in model container [2020-09-24 18:33:48,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:33:38" (2/3) ... [2020-09-24 18:33:48,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31742b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:33:48, skipping insertion in model container [2020-09-24 18:33:48,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:33:48" (3/3) ... [2020-09-24 18:33:48,902 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-09-24 18:33:48,919 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:33:48,940 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-09-24 18:33:48,971 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-09-24 18:33:49,050 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:33:49,050 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:33:49,051 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:33:49,051 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:33:49,051 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:33:49,051 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:33:49,052 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:33:49,052 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:33:49,171 INFO L276 IsEmpty]: Start isEmpty. Operand 5254 states. [2020-09-24 18:33:49,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1307 [2020-09-24 18:33:49,376 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:33:49,380 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] [2020-09-24 18:33:49,381 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:33:49,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:33:49,398 INFO L82 PathProgramCache]: Analyzing trace with hash 472805393, now seen corresponding path program 1 times [2020-09-24 18:33:49,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:33:49,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [833015718] [2020-09-24 18:33:49,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:33:51,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:33:51,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:33:52,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:33:53,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:33:54,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:33:54,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:33:55,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:33:56,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:33:56,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1313 [2020-09-24 18:33:56,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:33:56,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5176 [2020-09-24 18:33:56,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:33:56,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:33:56,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 705 [2020-09-24 18:33:56,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-24 18:33:56,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 18:33:58,540 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification that was a NOOP. DAG size: 409 [2020-09-24 18:33:58,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:33:58,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:33:58,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:33:58,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:33:58,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-24 18:33:58,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:33:58,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-09-24 18:33:58,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:33:58,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:33:58,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:33:58,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:33:58,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:34:00,472 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 18:34:00,473 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [833015718] [2020-09-24 18:34:00,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:34:00,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:34:00,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291662123] [2020-09-24 18:34:00,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:34:00,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:34:00,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:34:00,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:34:00,508 INFO L87 Difference]: Start difference. First operand 5254 states. Second operand 4 states.