/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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/locks/test_locks_15-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 05:12:38,534 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 05:12:38,536 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 05:12:38,562 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 05:12:38,562 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 05:12:38,563 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 05:12:38,565 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 05:12:38,567 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 05:12:38,573 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 05:12:38,574 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 05:12:38,575 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 05:12:38,577 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 05:12:38,578 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 05:12:38,579 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 05:12:38,580 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 05:12:38,581 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 05:12:38,585 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 05:12:38,585 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 05:12:38,590 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 05:12:38,593 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 05:12:38,595 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 05:12:38,596 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 05:12:38,599 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 05:12:38,600 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 05:12:38,604 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 05:12:38,605 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 05:12:38,605 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 05:12:38,608 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 05:12:38,608 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 05:12:38,609 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 05:12:38,609 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 05:12:38,612 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 05:12:38,613 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 05:12:38,613 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 05:12:38,615 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 05:12:38,615 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 05:12:38,623 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 05:12:38,624 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 05:12:38,624 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 05:12:38,625 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 05:12:38,627 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 05:12:38,629 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 05:12:38,675 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 05:12:38,675 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 05:12:38,676 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 05:12:38,676 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 05:12:38,677 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 05:12:38,677 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 05:12:38,678 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 05:12:38,678 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 05:12:38,678 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 05:12:38,678 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 05:12:38,678 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 05:12:38,679 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 05:12:38,679 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 05:12:38,679 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 05:12:38,679 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 05:12:38,679 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 05:12:38,680 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 05:12:38,680 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 05:12:38,680 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 05:12:38,680 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 05:12:38,680 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 05:12:38,681 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 05:12:38,681 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 05:12:38,682 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 05:12:38,682 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 05:12:38,683 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 05:12:38,683 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 05:12:38,683 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 05:12:38,683 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 05:12:38,683 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 05:12:39,010 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 05:12:39,024 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 05:12:39,029 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 05:12:39,031 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 05:12:39,031 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 05:12:39,032 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_15-1.c [2020-10-14 05:12:39,091 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1bbe9f593/03998d599b774c888128ab4ec5b31e17/FLAG8889374de [2020-10-14 05:12:39,588 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 05:12:39,589 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/locks/test_locks_15-1.c [2020-10-14 05:12:39,602 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1bbe9f593/03998d599b774c888128ab4ec5b31e17/FLAG8889374de [2020-10-14 05:12:39,932 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1bbe9f593/03998d599b774c888128ab4ec5b31e17 [2020-10-14 05:12:39,944 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 05:12:39,946 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 05:12:39,947 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 05:12:39,947 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 05:12:39,951 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 05:12:39,952 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:12:39" (1/1) ... [2020-10-14 05:12:39,956 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d84e2d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:12:39, skipping insertion in model container [2020-10-14 05:12:39,956 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:12:39" (1/1) ... [2020-10-14 05:12:39,965 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 05:12:39,990 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 05:12:40,192 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 05:12:40,202 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 05:12:40,274 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 05:12:40,294 INFO L208 MainTranslator]: Completed translation [2020-10-14 05:12:40,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:12:40 WrapperNode [2020-10-14 05:12:40,296 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 05:12:40,297 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 05:12:40,297 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 05:12:40,297 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 05:12:40,404 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:12:40" (1/1) ... [2020-10-14 05:12:40,404 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:12:40" (1/1) ... [2020-10-14 05:12:40,412 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:12:40" (1/1) ... [2020-10-14 05:12:40,412 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:12:40" (1/1) ... [2020-10-14 05:12:40,430 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:12:40" (1/1) ... [2020-10-14 05:12:40,449 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:12:40" (1/1) ... [2020-10-14 05:12:40,455 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:12:40" (1/1) ... [2020-10-14 05:12:40,460 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 05:12:40,461 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 05:12:40,463 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 05:12:40,463 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 05:12:40,465 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:12:40" (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 05:12:40,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 05:12:40,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 05:12:40,557 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 05:12:40,557 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 05:12:40,558 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 05:12:40,558 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 05:12:40,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 05:12:40,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 05:12:40,946 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 05:12:40,946 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 05:12:40,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:12:40 BoogieIcfgContainer [2020-10-14 05:12:40,953 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 05:12:40,955 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 05:12:40,956 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 05:12:40,959 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 05:12:40,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 05:12:39" (1/3) ... [2020-10-14 05:12:40,961 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@490d0ddf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:12:40, skipping insertion in model container [2020-10-14 05:12:40,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:12:40" (2/3) ... [2020-10-14 05:12:40,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@490d0ddf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:12:40, skipping insertion in model container [2020-10-14 05:12:40,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:12:40" (3/3) ... [2020-10-14 05:12:40,966 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_15-1.c [2020-10-14 05:12:40,981 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 05:12:40,991 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 05:12:41,019 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 05:12:41,057 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 05:12:41,058 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 05:12:41,058 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 05:12:41,058 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 05:12:41,059 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 05:12:41,059 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 05:12:41,059 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 05:12:41,059 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 05:12:41,084 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states. [2020-10-14 05:12:41,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-14 05:12:41,092 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:41,093 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] [2020-10-14 05:12:41,094 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:41,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:41,102 INFO L82 PathProgramCache]: Analyzing trace with hash -563352914, now seen corresponding path program 1 times [2020-10-14 05:12:41,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:41,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1755303073] [2020-10-14 05:12:41,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:41,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:41,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:41,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:41,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:41,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 05:12:41,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:12:41,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 359 [2020-10-14 05:12:41,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:41,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:41,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:41,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 05:12:41,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 05:12:41,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-14 05:12:41,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:41,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:41,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:41,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:41,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:41,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:41,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 05:12:41,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:41,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:41,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:41,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:41,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:41,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:41,800 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 05:12:41,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1755303073] [2020-10-14 05:12:41,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:41,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:41,806 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094532087] [2020-10-14 05:12:41,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:41,813 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:41,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:41,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:41,831 INFO L87 Difference]: Start difference. First operand 59 states. Second operand 3 states. [2020-10-14 05:12:41,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:41,908 INFO L93 Difference]: Finished difference Result 138 states and 253 transitions. [2020-10-14 05:12:41,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:41,911 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-10-14 05:12:41,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:41,925 INFO L225 Difference]: With dead ends: 138 [2020-10-14 05:12:41,925 INFO L226 Difference]: Without dead ends: 76 [2020-10-14 05:12:41,930 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:41,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-14 05:12:41,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2020-10-14 05:12:41,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-14 05:12:41,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 134 transitions. [2020-10-14 05:12:41,983 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 134 transitions. Word has length 25 [2020-10-14 05:12:41,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:41,984 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 134 transitions. [2020-10-14 05:12:41,984 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:41,985 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 134 transitions. [2020-10-14 05:12:41,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-14 05:12:41,986 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:41,986 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] [2020-10-14 05:12:41,987 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 05:12:41,987 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:41,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:41,988 INFO L82 PathProgramCache]: Analyzing trace with hash -563360106, now seen corresponding path program 1 times [2020-10-14 05:12:41,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:41,988 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1153261426] [2020-10-14 05:12:41,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:42,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:42,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:42,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:42,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 05:12:42,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:42,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-14 05:12:42,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:42,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:42,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:42,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 05:12:42,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 05:12:42,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:42,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:42,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:42,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:42,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:42,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:42,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:42,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:12:42,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:42,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:42,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:42,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:42,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:42,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:42,133 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 05:12:42,134 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1153261426] [2020-10-14 05:12:42,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:42,134 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:42,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397955445] [2020-10-14 05:12:42,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:42,137 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:42,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:42,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:42,137 INFO L87 Difference]: Start difference. First operand 74 states and 134 transitions. Second operand 3 states. [2020-10-14 05:12:42,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:42,167 INFO L93 Difference]: Finished difference Result 141 states and 258 transitions. [2020-10-14 05:12:42,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:42,167 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-10-14 05:12:42,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:42,170 INFO L225 Difference]: With dead ends: 141 [2020-10-14 05:12:42,171 INFO L226 Difference]: Without dead ends: 139 [2020-10-14 05:12:42,172 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:42,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-14 05:12:42,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 106. [2020-10-14 05:12:42,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-14 05:12:42,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 195 transitions. [2020-10-14 05:12:42,189 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 195 transitions. Word has length 25 [2020-10-14 05:12:42,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:42,190 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 195 transitions. [2020-10-14 05:12:42,190 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:42,190 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 195 transitions. [2020-10-14 05:12:42,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-14 05:12:42,192 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:42,192 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] [2020-10-14 05:12:42,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 05:12:42,192 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:42,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:42,193 INFO L82 PathProgramCache]: Analyzing trace with hash 2143266480, now seen corresponding path program 1 times [2020-10-14 05:12:42,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:42,193 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1164859395] [2020-10-14 05:12:42,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:42,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:42,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:42,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:42,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 05:12:42,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:42,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-14 05:12:42,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:42,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:42,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:42,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 05:12:42,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 05:12:42,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 05:12:42,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:42,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:42,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:42,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:42,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:42,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:42,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:12:42,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:42,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:42,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:42,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:42,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:42,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:42,306 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 05:12:42,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1164859395] [2020-10-14 05:12:42,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:42,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:42,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935465648] [2020-10-14 05:12:42,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:42,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:42,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:42,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:42,308 INFO L87 Difference]: Start difference. First operand 106 states and 195 transitions. Second operand 3 states. [2020-10-14 05:12:42,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:42,336 INFO L93 Difference]: Finished difference Result 206 states and 380 transitions. [2020-10-14 05:12:42,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:42,336 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-10-14 05:12:42,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:42,339 INFO L225 Difference]: With dead ends: 206 [2020-10-14 05:12:42,339 INFO L226 Difference]: Without dead ends: 140 [2020-10-14 05:12:42,340 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:42,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-14 05:12:42,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 138. [2020-10-14 05:12:42,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-14 05:12:42,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 253 transitions. [2020-10-14 05:12:42,357 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 253 transitions. Word has length 25 [2020-10-14 05:12:42,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:42,358 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 253 transitions. [2020-10-14 05:12:42,358 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:42,358 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 253 transitions. [2020-10-14 05:12:42,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-14 05:12:42,359 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:42,360 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] [2020-10-14 05:12:42,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 05:12:42,360 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:42,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:42,361 INFO L82 PathProgramCache]: Analyzing trace with hash 1737462484, now seen corresponding path program 1 times [2020-10-14 05:12:42,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:42,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1622757064] [2020-10-14 05:12:42,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:42,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:42,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:42,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:42,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 05:12:42,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:42,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-14 05:12:42,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:42,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:42,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:42,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 05:12:42,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 05:12:42,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:42,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:42,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:42,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:42,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:42,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:42,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:42,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:12:42,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:42,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:42,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:42,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:42,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:42,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:42,451 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 05:12:42,451 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1622757064] [2020-10-14 05:12:42,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:42,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:42,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156750947] [2020-10-14 05:12:42,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:42,453 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:42,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:42,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:42,454 INFO L87 Difference]: Start difference. First operand 138 states and 253 transitions. Second operand 3 states. [2020-10-14 05:12:42,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:42,478 INFO L93 Difference]: Finished difference Result 190 states and 344 transitions. [2020-10-14 05:12:42,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:42,478 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-10-14 05:12:42,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:42,480 INFO L225 Difference]: With dead ends: 190 [2020-10-14 05:12:42,481 INFO L226 Difference]: Without dead ends: 138 [2020-10-14 05:12:42,482 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:42,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-14 05:12:42,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 136. [2020-10-14 05:12:42,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-14 05:12:42,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 246 transitions. [2020-10-14 05:12:42,504 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 246 transitions. Word has length 25 [2020-10-14 05:12:42,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:42,505 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 246 transitions. [2020-10-14 05:12:42,506 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:42,506 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 246 transitions. [2020-10-14 05:12:42,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-14 05:12:42,508 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:42,508 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] [2020-10-14 05:12:42,508 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 05:12:42,508 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:42,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:42,511 INFO L82 PathProgramCache]: Analyzing trace with hash 149121774, now seen corresponding path program 1 times [2020-10-14 05:12:42,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:42,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [149187234] [2020-10-14 05:12:42,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:42,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-14 05:12:42,540 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-14 05:12:42,540 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 05:12:42,549 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 05:12:42,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 05:12:42 BoogieIcfgContainer [2020-10-14 05:12:42,589 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 05:12:42,593 INFO L168 Benchmark]: Toolchain (without parser) took 2646.34 ms. Allocated memory was 149.4 MB in the beginning and 230.7 MB in the end (delta: 81.3 MB). Free memory was 105.6 MB in the beginning and 136.1 MB in the end (delta: -30.5 MB). Peak memory consumption was 50.8 MB. Max. memory is 7.1 GB. [2020-10-14 05:12:42,595 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 149.4 MB. Free memory was 124.0 MB in the beginning and 123.6 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-10-14 05:12:42,597 INFO L168 Benchmark]: CACSL2BoogieTranslator took 349.57 ms. Allocated memory is still 149.4 MB. Free memory was 105.6 MB in the beginning and 94.0 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. [2020-10-14 05:12:42,598 INFO L168 Benchmark]: Boogie Preprocessor took 163.59 ms. Allocated memory was 149.4 MB in the beginning and 204.5 MB in the end (delta: 55.1 MB). Free memory was 94.0 MB in the beginning and 182.0 MB in the end (delta: -88.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-10-14 05:12:42,599 INFO L168 Benchmark]: RCFGBuilder took 492.81 ms. Allocated memory is still 204.5 MB. Free memory was 182.0 MB in the beginning and 157.4 MB in the end (delta: 24.6 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. [2020-10-14 05:12:42,600 INFO L168 Benchmark]: TraceAbstraction took 1633.98 ms. Allocated memory was 204.5 MB in the beginning and 230.7 MB in the end (delta: 26.2 MB). Free memory was 157.4 MB in the beginning and 136.1 MB in the end (delta: 21.3 MB). Peak memory consumption was 47.5 MB. Max. memory is 7.1 GB. [2020-10-14 05:12:42,619 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 149.4 MB. Free memory was 124.0 MB in the beginning and 123.6 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 349.57 ms. Allocated memory is still 149.4 MB. Free memory was 105.6 MB in the beginning and 94.0 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 163.59 ms. Allocated memory was 149.4 MB in the beginning and 204.5 MB in the end (delta: 55.1 MB). Free memory was 94.0 MB in the beginning and 182.0 MB in the end (delta: -88.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 492.81 ms. Allocated memory is still 204.5 MB. Free memory was 182.0 MB in the beginning and 157.4 MB in the end (delta: 24.6 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1633.98 ms. Allocated memory was 204.5 MB in the beginning and 230.7 MB in the end (delta: 26.2 MB). Free memory was 157.4 MB in the beginning and 136.1 MB in the end (delta: 21.3 MB). Peak memory consumption was 47.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 231]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L6] int p1 = __VERIFIER_nondet_int(); [L7] int lk1; [L9] int p2 = __VERIFIER_nondet_int(); [L10] int lk2; [L12] int p3 = __VERIFIER_nondet_int(); [L13] int lk3; [L15] int p4 = __VERIFIER_nondet_int(); [L16] int lk4; [L18] int p5 = __VERIFIER_nondet_int(); [L19] int lk5; [L21] int p6 = __VERIFIER_nondet_int(); [L22] int lk6; [L24] int p7 = __VERIFIER_nondet_int(); [L25] int lk7; [L27] int p8 = __VERIFIER_nondet_int(); [L28] int lk8; [L30] int p9 = __VERIFIER_nondet_int(); [L31] int lk9; [L33] int p10 = __VERIFIER_nondet_int(); [L34] int lk10; [L36] int p11 = __VERIFIER_nondet_int(); [L37] int lk11; [L39] int p12 = __VERIFIER_nondet_int(); [L40] int lk12; [L42] int p13 = __VERIFIER_nondet_int(); [L43] int lk13; [L45] int p14 = __VERIFIER_nondet_int(); [L46] int lk14; [L48] int p15 = __VERIFIER_nondet_int(); [L49] int lk15; [L52] int cond; [L54] COND TRUE 1 [L55] cond = __VERIFIER_nondet_int() [L56] COND FALSE !(cond == 0) [L59] lk1 = 0 [L61] lk2 = 0 [L63] lk3 = 0 [L65] lk4 = 0 [L67] lk5 = 0 [L69] lk6 = 0 [L71] lk7 = 0 [L73] lk8 = 0 [L75] lk9 = 0 [L77] lk10 = 0 [L79] lk11 = 0 [L81] lk12 = 0 [L83] lk13 = 0 [L85] lk14 = 0 [L87] lk15 = 0 [L91] COND FALSE !(p1 != 0) [L95] COND FALSE !(p2 != 0) [L99] COND TRUE p3 != 0 [L100] lk3 = 1 [L103] COND TRUE p4 != 0 [L104] lk4 = 1 [L107] COND TRUE p5 != 0 [L108] lk5 = 1 [L111] COND TRUE p6 != 0 [L112] lk6 = 1 [L115] COND TRUE p7 != 0 [L116] lk7 = 1 [L119] COND FALSE !(p8 != 0) [L123] COND TRUE p9 != 0 [L124] lk9 = 1 [L127] COND TRUE p10 != 0 [L128] lk10 = 1 [L131] COND TRUE p11 != 0 [L132] lk11 = 1 [L135] COND TRUE p12 != 0 [L136] lk12 = 1 [L139] COND TRUE p13 != 0 [L140] lk13 = 1 [L143] COND TRUE p14 != 0 [L144] lk14 = 1 [L147] COND TRUE p15 != 0 [L148] lk15 = 1 [L153] COND FALSE !(p1 != 0) [L158] COND FALSE !(p2 != 0) [L231] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 59 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.4s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 490 SDtfs, 302 SDslu, 321 SDs, 0 SdLazy, 21 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=138occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 39 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 125 NumberOfCodeBlocks, 125 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 96 ConstructedInterpolants, 0 QuantifiedInterpolants, 5952 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...