/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/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/loop-industry-pattern/nested-3.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-a47f07a [2021-04-16 07:26:26,288 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-16 07:26:26,295 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-16 07:26:26,365 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-04-16 07:26:26,388 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-04-16 07:26:26,390 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-04-16 07:26:26,391 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-04-16 07:26:26,394 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-04-16 07:26:26,400 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-04-16 07:26:26,405 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-04-16 07:26:26,408 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-04-16 07:26:26,411 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-04-16 07:26:26,421 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-04-16 07:26:26,430 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-04-16 07:26:26,433 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-04-16 07:26:26,439 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-04-16 07:26:26,452 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-04-16 07:26:26,457 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-04-16 07:26:26,459 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-04-16 07:26:26,460 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-04-16 07:26:26,469 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-04-16 07:26:26,471 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-04-16 07:26:26,471 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-04-16 07:26:26,472 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-04-16 07:26:26,473 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-04-16 07:26:26,473 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-16 07:26:26,475 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-16 07:26:26,476 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-16 07:26:26,478 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2021-04-16 07:26:26,511 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-16 07:26:26,512 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-16 07:26:26,522 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-16 07:26:26,523 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-16 07:26:26,523 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-16 07:26:26,523 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-16 07:26:26,523 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-16 07:26:26,523 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-16 07:26:26,524 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-16 07:26:26,524 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-16 07:26:26,526 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-16 07:26:26,527 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-16 07:26:26,527 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-16 07:26:26,527 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-16 07:26:26,527 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-16 07:26:26,527 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-16 07:26:26,528 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-16 07:26:26,528 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-16 07:26:26,528 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-16 07:26:26,528 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-16 07:26:26,528 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-04-16 07:26:26,528 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-04-16 07:26:26,528 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-04-16 07:26:26,529 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-16 07:26:27,068 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-16 07:26:27,127 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-16 07:26:27,132 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-16 07:26:27,133 INFO L271 PluginConnector]: Initializing CDTParser... [2021-04-16 07:26:27,135 INFO L275 PluginConnector]: CDTParser initialized [2021-04-16 07:26:27,136 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/nested-3.c [2021-04-16 07:26:27,251 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28702c8e4/802c0ba2e86647c6b349794ebf494109/FLAG023525de3 [2021-04-16 07:26:28,125 INFO L306 CDTParser]: Found 1 translation units. [2021-04-16 07:26:28,126 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/nested-3.c [2021-04-16 07:26:28,139 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28702c8e4/802c0ba2e86647c6b349794ebf494109/FLAG023525de3 [2021-04-16 07:26:28,465 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28702c8e4/802c0ba2e86647c6b349794ebf494109 [2021-04-16 07:26:28,471 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-16 07:26:28,474 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-04-16 07:26:28,478 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-04-16 07:26:28,479 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-04-16 07:26:28,484 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-04-16 07:26:28,486 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.04 07:26:28" (1/1) ... [2021-04-16 07:26:28,488 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42a23e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:26:28, skipping insertion in model container [2021-04-16 07:26:28,489 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.04 07:26:28" (1/1) ... [2021-04-16 07:26:28,501 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-04-16 07:26:28,523 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-04-16 07:26:28,777 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/nested-3.c[404,417] [2021-04-16 07:26:28,815 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-16 07:26:28,830 INFO L203 MainTranslator]: Completed pre-run [2021-04-16 07:26:28,846 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/nested-3.c[404,417] [2021-04-16 07:26:28,867 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-16 07:26:28,888 INFO L208 MainTranslator]: Completed translation [2021-04-16 07:26:28,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:26:28 WrapperNode [2021-04-16 07:26:28,890 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-04-16 07:26:28,895 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-16 07:26:28,895 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-16 07:26:28,897 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-16 07:26:28,936 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:26:28" (1/1) ... [2021-04-16 07:26:28,937 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:26:28" (1/1) ... [2021-04-16 07:26:28,950 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:26:28" (1/1) ... [2021-04-16 07:26:28,950 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:26:28" (1/1) ... [2021-04-16 07:26:28,973 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:26:28" (1/1) ... [2021-04-16 07:26:28,979 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:26:28" (1/1) ... [2021-04-16 07:26:28,981 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:26:28" (1/1) ... [2021-04-16 07:26:29,007 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-16 07:26:29,013 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-16 07:26:29,014 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-16 07:26:29,014 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-16 07:26:29,016 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:26:28" (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 [2021-04-16 07:26:29,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-04-16 07:26:29,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-16 07:26:29,155 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-04-16 07:26:29,156 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-04-16 07:26:29,157 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-04-16 07:26:29,157 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-04-16 07:26:29,157 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-04-16 07:26:29,158 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-04-16 07:26:29,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-04-16 07:26:29,159 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-04-16 07:26:29,159 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-04-16 07:26:29,159 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-04-16 07:26:29,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-04-16 07:26:29,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-04-16 07:26:29,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-16 07:26:29,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-04-16 07:26:29,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-04-16 07:26:29,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-04-16 07:26:29,674 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-16 07:26:29,674 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-04-16 07:26:29,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.04 07:26:29 BoogieIcfgContainer [2021-04-16 07:26:29,678 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-16 07:26:29,680 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-16 07:26:29,681 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-16 07:26:29,686 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-16 07:26:29,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.04 07:26:28" (1/3) ... [2021-04-16 07:26:29,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20bc493 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.04 07:26:29, skipping insertion in model container [2021-04-16 07:26:29,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:26:28" (2/3) ... [2021-04-16 07:26:29,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20bc493 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.04 07:26:29, skipping insertion in model container [2021-04-16 07:26:29,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.04 07:26:29" (3/3) ... [2021-04-16 07:26:29,692 INFO L111 eAbstractionObserver]: Analyzing ICFG nested-3.c [2021-04-16 07:26:29,701 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-04-16 07:26:29,708 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-16 07:26:29,735 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-04-16 07:26:29,765 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-16 07:26:29,765 INFO L377 AbstractCegarLoop]: Hoare is true [2021-04-16 07:26:29,765 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-04-16 07:26:29,766 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-16 07:26:29,766 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-16 07:26:29,766 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-16 07:26:29,766 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-16 07:26:29,766 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-16 07:26:29,802 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 15 states have (on average 1.6) internal successors, (24), 17 states have internal predecessors, (24), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-04-16 07:26:29,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-04-16 07:26:29,813 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 07:26:29,814 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 07:26:29,815 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 07:26:29,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 07:26:29,839 INFO L82 PathProgramCache]: Analyzing trace with hash -1677248157, now seen corresponding path program 1 times [2021-04-16 07:26:29,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 07:26:29,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1862993995] [2021-04-16 07:26:29,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 07:26:29,965 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 07:26:30,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 07:26:30,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:26:30,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:26:30,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:26:30,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 07:26:30,320 INFO L142 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size [2021-04-16 07:26:30,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:26:30,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:26:30,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:26:30,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 07:26:30,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 07:26:30,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:26:30,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:26:30,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 07:26:30,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1862993995] [2021-04-16 07:26:30,520 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 07:26:30,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-04-16 07:26:30,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172940372] [2021-04-16 07:26:30,531 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-16 07:26:30,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 07:26:30,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-16 07:26:30,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-04-16 07:26:30,558 INFO L87 Difference]: Start difference. First operand has 23 states, 15 states have (on average 1.6) internal successors, (24), 17 states have internal predecessors, (24), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 07:26:30,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 07:26:30,827 INFO L93 Difference]: Finished difference Result 40 states and 61 transitions. [2021-04-16 07:26:30,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-16 07:26:30,834 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-04-16 07:26:30,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 07:26:30,843 INFO L225 Difference]: With dead ends: 40 [2021-04-16 07:26:30,844 INFO L226 Difference]: Without dead ends: 23 [2021-04-16 07:26:30,852 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 146.9ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-04-16 07:26:30,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-04-16 07:26:30,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2021-04-16 07:26:30,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 15 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 07:26:30,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2021-04-16 07:26:30,933 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 14 [2021-04-16 07:26:30,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 07:26:30,935 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2021-04-16 07:26:30,935 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 07:26:30,936 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2021-04-16 07:26:30,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-04-16 07:26:30,936 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 07:26:30,936 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 07:26:30,937 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-16 07:26:30,937 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 07:26:30,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 07:26:30,938 INFO L82 PathProgramCache]: Analyzing trace with hash -946078686, now seen corresponding path program 1 times [2021-04-16 07:26:30,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 07:26:30,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1842201231] [2021-04-16 07:26:30,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 07:26:31,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:26:31,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 07:26:31,026 INFO L175 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~c~0_16 200000) (= v_~last~0_13 v_main_~c~0_16)) InVars {main_~c~0=v_main_~c~0_16, ~last~0=v_~last~0_13} OutVars{main_~c~0=v_main_~c~0_16, ~last~0=v_~last~0_13} AuxVars[] AssignedVars[] [2021-04-16 07:26:31,045 WARN L240 tifierPushTermWalker]: treesize reduction 10, result has 88.1 percent of original size [2021-04-16 07:26:31,054 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:26:31,076 INFO L725 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-04-16 07:26:31,084 INFO L732 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:26:31,088 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:26:31,104 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 07:26:31,113 INFO L108 tifierPushTermWalker]: treesize reduction 6, result has 14.3 percent of original size [2021-04-16 07:26:31,120 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:26:31,129 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:26:31,133 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-04-16 07:26:31,141 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:26:31,143 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 07:26:31,145 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.ClassCastException: class de.uni_freiburg.informatik.ultimate.logic.ApplicationTerm cannot be cast to class de.uni_freiburg.informatik.ultimate.logic.QuantifiedFormula (de.uni_freiburg.informatik.ultimate.logic.ApplicationTerm and de.uni_freiburg.informatik.ultimate.logic.QuantifiedFormula are in unnamed module of loader org.eclipse.osgi.internal.loader.EquinoxClassLoader @3e587920) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:306) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:168) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:155) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:71) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:58) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:241) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:232) at de.uni_freiburg.informatik.ultimate.icfgtransformer.loopacceleration.jordan.JordanLoopAcceleration.buildAccelerationFormula(JordanLoopAcceleration.java:530) at de.uni_freiburg.informatik.ultimate.icfgtransformer.loopacceleration.jordan.JordanLoopAcceleration.createLoopAccelerationFormula(JordanLoopAcceleration.java:498) at de.uni_freiburg.informatik.ultimate.icfgtransformer.loopacceleration.jordan.JordanLoopAcceleration.accelerateLoop(JordanLoopAcceleration.java:177) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.loopaccelerator.AcceleratorJordan.accelerateLoop(AcceleratorJordan.java:72) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolationCore.acceleratedInterpolationCoreIsCorrect(AcceleratedInterpolationCore.java:183) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:145) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:241) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:608) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:437) 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:69) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:63) 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:127) 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$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-04-16 07:26:31,155 INFO L168 Benchmark]: Toolchain (without parser) took 2681.93 ms. Allocated memory is still 188.7 MB. Free memory was 155.1 MB in the beginning and 113.8 MB in the end (delta: 41.3 MB). Peak memory consumption was 41.6 MB. Max. memory is 8.0 GB. [2021-04-16 07:26:31,156 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 188.7 MB. Free memory is still 171.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-04-16 07:26:31,157 INFO L168 Benchmark]: CACSL2BoogieTranslator took 412.88 ms. Allocated memory is still 188.7 MB. Free memory was 154.8 MB in the beginning and 145.5 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-04-16 07:26:31,158 INFO L168 Benchmark]: Boogie Preprocessor took 112.88 ms. Allocated memory is still 188.7 MB. Free memory was 145.3 MB in the beginning and 172.0 MB in the end (delta: -26.7 MB). Peak memory consumption was 7.0 MB. Max. memory is 8.0 GB. [2021-04-16 07:26:31,158 INFO L168 Benchmark]: RCFGBuilder took 664.95 ms. Allocated memory is still 188.7 MB. Free memory was 172.0 MB in the beginning and 157.3 MB in the end (delta: 14.7 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-04-16 07:26:31,159 INFO L168 Benchmark]: TraceAbstraction took 1473.87 ms. Allocated memory is still 188.7 MB. Free memory was 156.8 MB in the beginning and 113.8 MB in the end (delta: 43.0 MB). Peak memory consumption was 43.0 MB. Max. memory is 8.0 GB. [2021-04-16 07:26:31,162 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 188.7 MB. Free memory is still 171.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 412.88 ms. Allocated memory is still 188.7 MB. Free memory was 154.8 MB in the beginning and 145.5 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 112.88 ms. Allocated memory is still 188.7 MB. Free memory was 145.3 MB in the beginning and 172.0 MB in the end (delta: -26.7 MB). Peak memory consumption was 7.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 664.95 ms. Allocated memory is still 188.7 MB. Free memory was 172.0 MB in the beginning and 157.3 MB in the end (delta: 14.7 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1473.87 ms. Allocated memory is still 188.7 MB. Free memory was 156.8 MB in the beginning and 113.8 MB in the end (delta: 43.0 MB). Peak memory consumption was 43.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: ClassCastException: class de.uni_freiburg.informatik.ultimate.logic.ApplicationTerm cannot be cast to class de.uni_freiburg.informatik.ultimate.logic.QuantifiedFormula (de.uni_freiburg.informatik.ultimate.logic.ApplicationTerm and de.uni_freiburg.informatik.ultimate.logic.QuantifiedFormula are in unnamed module of loader org.eclipse.osgi.internal.loader.EquinoxClassLoader @3e587920) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: ClassCastException: class de.uni_freiburg.informatik.ultimate.logic.ApplicationTerm cannot be cast to class de.uni_freiburg.informatik.ultimate.logic.QuantifiedFormula (de.uni_freiburg.informatik.ultimate.logic.ApplicationTerm and de.uni_freiburg.informatik.ultimate.logic.QuantifiedFormula are in unnamed module of loader org.eclipse.osgi.internal.loader.EquinoxClassLoader @3e587920): de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:306) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...