/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 SequenceOfStatements --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=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-examples/standard_running-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 18:03:50,247 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 18:03:50,249 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 18:03:50,272 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 18:03:50,272 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 18:03:50,273 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 18:03:50,275 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 18:03:50,276 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 18:03:50,278 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 18:03:50,279 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 18:03:50,279 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 18:03:50,281 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 18:03:50,281 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 18:03:50,282 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 18:03:50,283 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 18:03:50,284 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 18:03:50,287 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 18:03:50,288 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 18:03:50,290 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 18:03:50,291 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 18:03:50,293 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 18:03:50,294 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 18:03:50,296 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 18:03:50,297 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 18:03:50,299 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 18:03:50,301 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 18:03:50,301 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 18:03:50,302 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 18:03:50,302 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 18:03:50,303 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 18:03:50,303 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 18:03:50,307 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 18:03:50,308 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 18:03:50,309 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 18:03:50,309 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 18:03:50,310 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 18:03:50,310 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 18:03:50,310 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 18:03:50,311 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 18:03:50,311 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 18:03:50,312 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 18:03:50,313 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 [2020-10-14 18:03:50,335 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 18:03:50,335 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 18:03:50,336 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 18:03:50,336 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 18:03:50,337 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 18:03:50,337 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 18:03:50,337 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 18:03:50,337 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 18:03:50,337 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 18:03:50,338 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 18:03:50,338 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 18:03:50,338 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 18:03:50,338 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 18:03:50,338 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 18:03:50,338 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 18:03:50,339 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 18:03:50,339 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 18:03:50,339 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 18:03:50,339 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 18:03:50,339 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 18:03:50,340 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 18:03:50,340 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 18:03:50,340 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 18:03:50,340 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 18:03:50,340 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 18:03:50,341 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 18:03:50,341 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 18:03:50,341 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 18:03:50,341 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 18:03:50,341 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 -> SequenceOfStatements 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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 18:03:50,644 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 18:03:50,662 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 18:03:50,668 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 18:03:50,670 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 18:03:50,671 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 18:03:50,672 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_running-2.i [2020-10-14 18:03:50,746 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1ee6b757d/d00acfb722b64b4084fe62159f788787/FLAG6cc5aa717 [2020-10-14 18:03:51,201 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 18:03:51,202 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/standard_running-2.i [2020-10-14 18:03:51,209 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1ee6b757d/d00acfb722b64b4084fe62159f788787/FLAG6cc5aa717 [2020-10-14 18:03:51,571 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1ee6b757d/d00acfb722b64b4084fe62159f788787 [2020-10-14 18:03:51,580 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 18:03:51,582 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 18:03:51,583 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 18:03:51,583 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 18:03:51,586 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 18:03:51,588 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 06:03:51" (1/1) ... [2020-10-14 18:03:51,591 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@496f409b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:03:51, skipping insertion in model container [2020-10-14 18:03:51,591 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 06:03:51" (1/1) ... [2020-10-14 18:03:51,599 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 18:03:51,616 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 18:03:51,775 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 18:03:51,779 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 18:03:51,804 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 18:03:51,824 INFO L208 MainTranslator]: Completed translation [2020-10-14 18:03:51,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:03:51 WrapperNode [2020-10-14 18:03:51,825 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 18:03:51,826 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 18:03:51,826 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 18:03:51,826 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 18:03:51,929 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:03:51" (1/1) ... [2020-10-14 18:03:51,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:03:51" (1/1) ... [2020-10-14 18:03:51,938 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:03:51" (1/1) ... [2020-10-14 18:03:51,939 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:03:51" (1/1) ... [2020-10-14 18:03:51,947 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:03:51" (1/1) ... [2020-10-14 18:03:51,954 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:03:51" (1/1) ... [2020-10-14 18:03:51,955 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:03:51" (1/1) ... [2020-10-14 18:03:51,958 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 18:03:51,958 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 18:03:51,959 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 18:03:51,959 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 18:03:51,960 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:03:51" (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 [2020-10-14 18:03:52,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 18:03:52,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 18:03:52,037 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 18:03:52,037 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 18:03:52,037 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 18:03:52,037 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 18:03:52,037 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 18:03:52,038 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 18:03:52,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 18:03:52,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 18:03:52,038 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 18:03:52,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 18:03:52,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 18:03:52,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 18:03:52,317 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 18:03:52,317 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-14 18:03:52,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:03:52 BoogieIcfgContainer [2020-10-14 18:03:52,322 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 18:03:52,323 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 18:03:52,323 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 18:03:52,326 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 18:03:52,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 06:03:51" (1/3) ... [2020-10-14 18:03:52,328 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50504bcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 06:03:52, skipping insertion in model container [2020-10-14 18:03:52,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:03:51" (2/3) ... [2020-10-14 18:03:52,328 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50504bcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 06:03:52, skipping insertion in model container [2020-10-14 18:03:52,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:03:52" (3/3) ... [2020-10-14 18:03:52,330 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_running-2.i [2020-10-14 18:03:52,342 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 18:03:52,350 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 18:03:52,366 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 18:03:52,393 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 18:03:52,393 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 18:03:52,393 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 18:03:52,393 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 18:03:52,394 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 18:03:52,394 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 18:03:52,399 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 18:03:52,399 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 18:03:52,445 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-10-14 18:03:52,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-14 18:03:52,454 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:03:52,455 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:03:52,455 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:03:52,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:03:52,460 INFO L82 PathProgramCache]: Analyzing trace with hash -766370701, now seen corresponding path program 1 times [2020-10-14 18:03:52,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:03:52,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1776680634] [2020-10-14 18:03:52,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:03:52,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:03:52,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:52,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:52,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:52,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:52,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:03:52,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 18:03:52,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 18:03:52,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 299 [2020-10-14 18:03:52,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:03:52,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:03:52,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 18:03:52,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 18:03:52,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 18:03:52,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 18:03:52,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:03:52,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:03:52,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:52,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:03:52,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:03:52,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:03:52,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 18:03:52,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:03:52,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:03:52,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:03:52,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:03:52,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:03:52,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:03:53,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:03:53,002 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1776680634] [2020-10-14 18:03:53,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 18:03:53,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 18:03:53,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552215493] [2020-10-14 18:03:53,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 18:03:53,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:03:53,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 18:03:53,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 18:03:53,031 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 6 states. [2020-10-14 18:03:53,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:03:53,245 INFO L93 Difference]: Finished difference Result 71 states and 100 transitions. [2020-10-14 18:03:53,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 18:03:53,247 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-14 18:03:53,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:03:53,257 INFO L225 Difference]: With dead ends: 71 [2020-10-14 18:03:53,258 INFO L226 Difference]: Without dead ends: 32 [2020-10-14 18:03:53,261 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 18:03:53,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-14 18:03:53,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-10-14 18:03:53,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-14 18:03:53,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 43 transitions. [2020-10-14 18:03:53,306 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 43 transitions. Word has length 15 [2020-10-14 18:03:53,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:03:53,307 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 43 transitions. [2020-10-14 18:03:53,307 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 18:03:53,307 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 43 transitions. [2020-10-14 18:03:53,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-14 18:03:53,309 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:03:53,309 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] [2020-10-14 18:03:53,310 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 18:03:53,310 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:03:53,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:03:53,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1752606401, now seen corresponding path program 1 times [2020-10-14 18:03:53,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:03:53,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1847532556] [2020-10-14 18:03:53,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:03:53,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:03:53,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:53,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:53,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:53,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:53,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:55,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:03:55,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 18:03:55,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 18:03:55,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1697 [2020-10-14 18:03:55,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:03:55,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:03:55,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 18:03:55,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 18:03:55,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 18:03:55,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 18:03:55,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:03:55,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:03:55,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:55,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:03:55,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:03:55,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:03:55,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:03:55,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:03:55,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:03:55,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:03:55,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:03:55,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:03:55,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:03:55,117 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:03:55,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1847532556] [2020-10-14 18:03:55,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:03:55,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 18:03:55,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992013296] [2020-10-14 18:03:55,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 18:03:55,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:03:55,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 18:03:55,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 18:03:55,125 INFO L87 Difference]: Start difference. First operand 32 states and 43 transitions. Second operand 5 states. [2020-10-14 18:03:55,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:03:55,277 INFO L93 Difference]: Finished difference Result 91 states and 133 transitions. [2020-10-14 18:03:55,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 18:03:55,277 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-10-14 18:03:55,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:03:55,279 INFO L225 Difference]: With dead ends: 91 [2020-10-14 18:03:55,279 INFO L226 Difference]: Without dead ends: 67 [2020-10-14 18:03:55,281 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 18:03:55,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-14 18:03:55,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 50. [2020-10-14 18:03:55,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-14 18:03:55,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 68 transitions. [2020-10-14 18:03:55,292 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 68 transitions. Word has length 22 [2020-10-14 18:03:55,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:03:55,293 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 68 transitions. [2020-10-14 18:03:55,293 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 18:03:55,293 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 68 transitions. [2020-10-14 18:03:55,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-14 18:03:55,294 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:03:55,295 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:03:55,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 18:03:55,295 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:03:55,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:03:55,296 INFO L82 PathProgramCache]: Analyzing trace with hash -30119072, now seen corresponding path program 1 times [2020-10-14 18:03:55,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:03:55,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1801063554] [2020-10-14 18:03:55,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:03:55,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:03:55,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:55,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:55,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:55,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:55,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:55,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:56,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:58,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:59,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:00,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:00,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-14 18:04:00,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 18:04:00,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 18:04:00,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:00,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:00,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 18:04:00,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 18:04:00,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 18:04:00,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:04:00,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:04:00,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:00,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:00,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:00,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:04:00,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:00,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:04:00,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:00,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:00,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:04:00,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:00,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:04:00,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:04:00,483 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 18:04:00,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1801063554] [2020-10-14 18:04:00,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:04:00,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 18:04:00,484 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589200271] [2020-10-14 18:04:00,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 18:04:00,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:04:00,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 18:04:00,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-14 18:04:00,486 INFO L87 Difference]: Start difference. First operand 50 states and 68 transitions. Second operand 9 states. [2020-10-14 18:04:00,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:04:00,990 INFO L93 Difference]: Finished difference Result 138 states and 204 transitions. [2020-10-14 18:04:00,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 18:04:00,992 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 39 [2020-10-14 18:04:00,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:04:01,001 INFO L225 Difference]: With dead ends: 138 [2020-10-14 18:04:01,002 INFO L226 Difference]: Without dead ends: 124 [2020-10-14 18:04:01,006 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2020-10-14 18:04:01,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-14 18:04:01,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 80. [2020-10-14 18:04:01,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-14 18:04:01,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 112 transitions. [2020-10-14 18:04:01,041 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 112 transitions. Word has length 39 [2020-10-14 18:04:01,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:04:01,042 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 112 transitions. [2020-10-14 18:04:01,042 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 18:04:01,043 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 112 transitions. [2020-10-14 18:04:01,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-14 18:04:01,046 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:04:01,046 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:04:01,047 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 18:04:01,047 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:04:01,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:04:01,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1744888290, now seen corresponding path program 1 times [2020-10-14 18:04:01,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:04:01,050 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1120788448] [2020-10-14 18:04:01,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:04:01,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:01,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:01,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:01,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:01,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:01,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:01,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:02,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:06,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:06,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-14 18:04:06,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 18:04:06,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 18:04:06,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:06,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:06,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 18:04:06,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:04:06,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 18:04:06,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:04:06,139 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 13: A-local: [], B-local: [(main_~i~0_26 Int)]. [2020-10-14 18:04:06,140 ERROR L253 erpolLogProxyWrapper]: Interpolant 13 not inductive [2020-10-14 18:04:06,141 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 14: A-local: [], B-local: [(main_~i~0_26 Int)]. [2020-10-14 18:04:06,142 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 15: A-local: [], B-local: [(main_~i~0_26 Int)]. [2020-10-14 18:04:06,151 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 16: A-local: [], B-local: [(main_~i~0_26 Int)]. [2020-10-14 18:04:06,152 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 17: A-local: [], B-local: [(main_~i~0_26 Int)]. [2020-10-14 18:04:06,153 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 18: A-local: [], B-local: [(main_~i~0_26 Int)]. [2020-10-14 18:04:06,154 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 19: A-local: [], B-local: [(main_~i~0_26 Int)]. [2020-10-14 18:04:06,155 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 20: A-local: [], B-local: [(main_~i~0_26 Int)]. [2020-10-14 18:04:06,156 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 21: A-local: [], B-local: [(main_~i~0_26 Int)]. [2020-10-14 18:04:06,157 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 22: A-local: [], B-local: [(main_~i~0_26 Int)]. [2020-10-14 18:04:06,158 ERROR L253 erpolLogProxyWrapper]: Interpolant 23 not inductive [2020-10-14 18:04:06,160 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 18:04:06,161 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: generated interpolants did not pass sanity check at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:849) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:155) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:256) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:150) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-10-14 18:04:06,168 INFO L168 Benchmark]: Toolchain (without parser) took 14584.84 ms. Allocated memory was 146.8 MB in the beginning and 381.2 MB in the end (delta: 234.4 MB). Free memory was 103.3 MB in the beginning and 186.0 MB in the end (delta: -82.7 MB). Peak memory consumption was 219.1 MB. Max. memory is 7.1 GB. [2020-10-14 18:04:06,170 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 146.8 MB. Free memory was 121.3 MB in the beginning and 120.9 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. [2020-10-14 18:04:06,171 INFO L168 Benchmark]: CACSL2BoogieTranslator took 242.92 ms. Allocated memory is still 146.8 MB. Free memory was 102.8 MB in the beginning and 93.0 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-10-14 18:04:06,173 INFO L168 Benchmark]: Boogie Preprocessor took 131.97 ms. Allocated memory was 146.8 MB in the beginning and 203.4 MB in the end (delta: 56.6 MB). Free memory was 93.0 MB in the beginning and 181.2 MB in the end (delta: -88.2 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-10-14 18:04:06,180 INFO L168 Benchmark]: RCFGBuilder took 363.77 ms. Allocated memory is still 203.4 MB. Free memory was 181.2 MB in the beginning and 163.5 MB in the end (delta: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 7.1 GB. [2020-10-14 18:04:06,181 INFO L168 Benchmark]: TraceAbstraction took 13840.82 ms. Allocated memory was 203.4 MB in the beginning and 381.2 MB in the end (delta: 177.7 MB). Free memory was 163.5 MB in the beginning and 186.0 MB in the end (delta: -22.5 MB). Peak memory consumption was 222.7 MB. Max. memory is 7.1 GB. [2020-10-14 18:04:06,194 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 146.8 MB. Free memory was 121.3 MB in the beginning and 120.9 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 242.92 ms. Allocated memory is still 146.8 MB. Free memory was 102.8 MB in the beginning and 93.0 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 131.97 ms. Allocated memory was 146.8 MB in the beginning and 203.4 MB in the end (delta: 56.6 MB). Free memory was 93.0 MB in the beginning and 181.2 MB in the end (delta: -88.2 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 363.77 ms. Allocated memory is still 203.4 MB. Free memory was 181.2 MB in the beginning and 163.5 MB in the end (delta: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 13840.82 ms. Allocated memory was 203.4 MB in the beginning and 381.2 MB in the end (delta: 177.7 MB). Free memory was 163.5 MB in the beginning and 186.0 MB in the end (delta: -22.5 MB). Peak memory consumption was 222.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: generated interpolants did not pass sanity check de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: generated interpolants did not pass sanity check: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...