/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/reducercommutativity/rangesum.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 02:19:40,672 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 02:19:40,677 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 02:19:40,738 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-22 02:19:40,769 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 02:19:40,772 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 02:19:40,774 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 02:19:40,776 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 02:19:40,781 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 02:19:40,792 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 02:19:40,800 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 02:19:40,805 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 02:19:40,809 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 02:19:40,812 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 02:19:40,813 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 02:19:40,816 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 02:19:40,823 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-22 02:19:40,839 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 02:19:40,840 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 02:19:40,841 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 02:19:40,842 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-22 02:19:40,868 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 02:19:40,868 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 02:19:40,873 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 02:19:40,874 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 02:19:40,874 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 02:19:40,874 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 02:19:40,874 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 02:19:40,874 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 02:19:40,875 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 02:19:40,875 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 02:19:40,876 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 02:19:40,876 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 02:19:40,877 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 02:19:40,877 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 02:19:40,877 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 02:19:40,878 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 02:19:40,878 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 02:19:40,878 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 02:19:40,878 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 02:19:40,878 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 02:19:40,879 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 02:19:40,879 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 02:19:40,879 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 02:19:40,879 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 02:19:41,239 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 02:19:41,273 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 02:19:41,277 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 02:19:41,278 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 02:19:41,279 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 02:19:41,280 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/rangesum.i [2021-02-22 02:19:41,373 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a5a4f0e4/4b01e4c07a5641429ec922a5f0d2973b/FLAGd8007a218 [2021-02-22 02:19:42,104 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 02:19:42,105 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/reducercommutativity/rangesum.i [2021-02-22 02:19:42,114 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a5a4f0e4/4b01e4c07a5641429ec922a5f0d2973b/FLAGd8007a218 [2021-02-22 02:19:42,438 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a5a4f0e4/4b01e4c07a5641429ec922a5f0d2973b [2021-02-22 02:19:42,441 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 02:19:42,456 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 02:19:42,459 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 02:19:42,460 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 02:19:42,464 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 02:19:42,465 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 02:19:42" (1/1) ... [2021-02-22 02:19:42,466 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@201b1f21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:19:42, skipping insertion in model container [2021-02-22 02:19:42,467 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 02:19:42" (1/1) ... [2021-02-22 02:19:42,477 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 02:19:42,498 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 02:19:42,683 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/reducercommutativity/rangesum.i[1544,1557] [2021-02-22 02:19:42,687 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 02:19:42,701 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 02:19:42,763 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/reducercommutativity/rangesum.i[1544,1557] [2021-02-22 02:19:42,764 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 02:19:42,788 INFO L208 MainTranslator]: Completed translation [2021-02-22 02:19:42,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:19:42 WrapperNode [2021-02-22 02:19:42,789 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 02:19:42,791 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 02:19:42,791 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 02:19:42,792 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 02:19:42,808 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:19:42" (1/1) ... [2021-02-22 02:19:42,808 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:19:42" (1/1) ... [2021-02-22 02:19:42,830 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:19:42" (1/1) ... [2021-02-22 02:19:42,831 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:19:42" (1/1) ... [2021-02-22 02:19:42,855 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:19:42" (1/1) ... [2021-02-22 02:19:42,865 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:19:42" (1/1) ... [2021-02-22 02:19:42,873 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:19:42" (1/1) ... [2021-02-22 02:19:42,879 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 02:19:42,881 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 02:19:42,882 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 02:19:42,882 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 02:19:42,884 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:19:42" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2021-02-22 02:19:43,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 02:19:43,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 02:19:43,014 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 02:19:43,014 INFO L138 BoogieDeclarations]: Found implementation of procedure init_nondet [2021-02-22 02:19:43,014 INFO L138 BoogieDeclarations]: Found implementation of procedure rangesum [2021-02-22 02:19:43,015 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 02:19:43,015 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 02:19:43,016 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 02:19:43,016 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-22 02:19:43,016 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-22 02:19:43,016 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 02:19:43,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 02:19:43,017 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-22 02:19:43,017 INFO L130 BoogieDeclarations]: Found specification of procedure init_nondet [2021-02-22 02:19:43,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 02:19:43,018 INFO L130 BoogieDeclarations]: Found specification of procedure rangesum [2021-02-22 02:19:43,018 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 02:19:43,019 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 02:19:43,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 02:19:43,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 02:19:43,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 02:19:43,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 02:19:43,538 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 02:19:43,539 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-02-22 02:19:43,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 02:19:43 BoogieIcfgContainer [2021-02-22 02:19:43,541 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 02:19:43,543 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 02:19:43,544 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 02:19:43,547 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 02:19:43,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 02:19:42" (1/3) ... [2021-02-22 02:19:43,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6646b663 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 02:19:43, skipping insertion in model container [2021-02-22 02:19:43,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:19:42" (2/3) ... [2021-02-22 02:19:43,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6646b663 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 02:19:43, skipping insertion in model container [2021-02-22 02:19:43,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 02:19:43" (3/3) ... [2021-02-22 02:19:43,552 INFO L111 eAbstractionObserver]: Analyzing ICFG rangesum.i [2021-02-22 02:19:43,560 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 02:19:43,565 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 02:19:43,587 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 02:19:43,633 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 02:19:43,633 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 02:19:43,634 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 02:19:43,634 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 02:19:43,634 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 02:19:43,634 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 02:19:43,634 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 02:19:43,634 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 02:19:43,653 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states. [2021-02-22 02:19:43,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-02-22 02:19:43,669 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:19:43,670 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 02:19:43,670 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:19:43,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:19:43,678 INFO L82 PathProgramCache]: Analyzing trace with hash 1096767322, now seen corresponding path program 1 times [2021-02-22 02:19:43,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:19:43,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2093492525] [2021-02-22 02:19:43,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:19:43,781 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:19:43,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:19:44,008 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:44,010 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:19:44,011 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:44,013 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:19:44,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:19:44,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:19:44,077 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:44,077 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:19:44,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-22 02:19:44,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:19:44,091 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:44,092 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:19:44,093 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:44,094 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:19:44,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-22 02:19:44,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2093492525] [2021-02-22 02:19:44,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:19:44,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2021-02-22 02:19:44,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819156892] [2021-02-22 02:19:44,118 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-02-22 02:19:44,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:19:44,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-02-22 02:19:44,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 02:19:44,152 INFO L87 Difference]: Start difference. First operand 95 states. Second operand 37 states. [2021-02-22 02:19:44,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-02-22 02:19:44,170 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 02:19:44,170 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: at least one of both input predicates is unknown: 98#true or 128#unknown at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$CoverageRelation.isCovered(PredicateUnifier.java:593) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.SdHoareTripleChecker$CheckHelper.check(SdHoareTripleChecker.java:151) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.SdHoareTripleChecker.checkCall(SdHoareTripleChecker.java:73) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.EfficientHoareTripleChecker.checkCall(EfficientHoareTripleChecker.java:72) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkCall(CachingHoareTripleChecker.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$CallSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:401) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.addOtherSuccessors(DeterministicInterpolantAutomaton.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.callSuccessors(AbstractInterpolantAutomaton.java:256) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.callSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.callSuccessors(TotalizeNwa.java:260) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.callSuccessors(ComplementDeterministicNwa.java:131) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.callSuccessors(ProductNwa.java:252) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.callSuccessors(ProductNwa.java:244) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addCallsAndSuccessors(NestedWordAutomatonReachableStates.java:1087) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:967) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:187) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:743) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:674) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:472) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:62) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateAllErrorsAtOnce(TraceAbstractionStarter.java:317) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:171) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:131) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) 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$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-02-22 02:19:44,180 INFO L168 Benchmark]: Toolchain (without parser) took 1733.41 ms. Allocated memory is still 172.0 MB. Free memory was 147.8 MB in the beginning and 133.6 MB in the end (delta: 14.2 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-02-22 02:19:44,182 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 172.0 MB. Free memory is still 146.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 02:19:44,185 INFO L168 Benchmark]: CACSL2BoogieTranslator took 330.67 ms. Allocated memory is still 172.0 MB. Free memory was 146.7 MB in the beginning and 136.3 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-22 02:19:44,186 INFO L168 Benchmark]: Boogie Preprocessor took 88.97 ms. Allocated memory is still 172.0 MB. Free memory was 136.3 MB in the beginning and 134.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-22 02:19:44,188 INFO L168 Benchmark]: RCFGBuilder took 660.61 ms. Allocated memory is still 172.0 MB. Free memory was 134.4 MB in the beginning and 111.1 MB in the end (delta: 23.3 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2021-02-22 02:19:44,189 INFO L168 Benchmark]: TraceAbstraction took 632.58 ms. Allocated memory is still 172.0 MB. Free memory was 110.6 MB in the beginning and 133.6 MB in the end (delta: -23.0 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 02:19:44,199 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 172.0 MB. Free memory is still 146.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 330.67 ms. Allocated memory is still 172.0 MB. Free memory was 146.7 MB in the beginning and 136.3 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 88.97 ms. Allocated memory is still 172.0 MB. Free memory was 136.3 MB in the beginning and 134.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 660.61 ms. Allocated memory is still 172.0 MB. Free memory was 134.4 MB in the beginning and 111.1 MB in the end (delta: 23.3 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 632.58 ms. Allocated memory is still 172.0 MB. Free memory was 110.6 MB in the beginning and 133.6 MB in the end (delta: -23.0 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: at least one of both input predicates is unknown: 98#true or 128#unknown de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: at least one of both input predicates is unknown: 98#true or 128#unknown: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$CoverageRelation.isCovered(PredicateUnifier.java:593) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...