/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/loops-crafted-1/sumt7.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 04:50:19,631 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 04:50:19,635 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 04:50:19,696 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-24 04:50:19,697 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-24 04:50:19,701 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-24 04:50:19,705 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-24 04:50:19,714 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-24 04:50:19,717 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-24 04:50:19,724 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-24 04:50:19,726 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-24 04:50:19,728 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-24 04:50:19,729 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 04:50:19,731 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 04:50:19,734 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 04:50:19,736 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 04:50:19,740 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 04:50:19,754 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 04:50:19,762 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 04:50:19,770 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 04:50:19,773 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 04:50:19,775 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 04:50:19,777 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 04:50:19,779 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 04:50:19,789 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-24 04:50:19,802 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 04:50:19,803 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 04:50:19,803 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 04:50:19,805 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-24 04:50:19,830 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 04:50:19,830 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 04:50:19,835 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 04:50:19,835 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 04:50:19,836 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 04:50:19,836 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 04:50:19,836 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 04:50:19,836 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 04:50:19,836 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 04:50:19,837 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 04:50:19,838 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 04:50:19,838 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 04:50:19,838 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 04:50:19,839 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 04:50:19,839 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 04:50:19,839 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 04:50:19,840 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 04:50:19,840 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 04:50:19,840 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 04:50:19,840 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 04:50:19,841 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 04:50:19,841 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 04:50:19,841 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 04:50:19,841 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 04:50:20,225 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 04:50:20,262 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 04:50:20,266 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 04:50:20,268 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 04:50:20,268 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 04:50:20,270 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/sumt7.c [2021-02-24 04:50:20,358 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70c843c7d/e25f6e32be384c87b29acc91a3d4fea2/FLAG5698a54f5 [2021-02-24 04:50:21,019 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 04:50:21,020 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/sumt7.c [2021-02-24 04:50:21,033 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70c843c7d/e25f6e32be384c87b29acc91a3d4fea2/FLAG5698a54f5 [2021-02-24 04:50:21,391 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70c843c7d/e25f6e32be384c87b29acc91a3d4fea2 [2021-02-24 04:50:21,394 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 04:50:21,411 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 04:50:21,419 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 04:50:21,420 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 04:50:21,425 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 04:50:21,426 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:50:21" (1/1) ... [2021-02-24 04:50:21,428 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@657e1742 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:50:21, skipping insertion in model container [2021-02-24 04:50:21,428 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:50:21" (1/1) ... [2021-02-24 04:50:21,439 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 04:50:21,462 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 04:50:21,696 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/sumt7.c[403,416] [2021-02-24 04:50:21,733 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:50:21,744 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 04:50:21,757 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/sumt7.c[403,416] [2021-02-24 04:50:21,785 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:50:21,804 INFO L208 MainTranslator]: Completed translation [2021-02-24 04:50:21,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:50:21 WrapperNode [2021-02-24 04:50:21,805 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 04:50:21,806 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 04:50:21,807 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 04:50:21,807 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 04:50:21,820 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:50:21" (1/1) ... [2021-02-24 04:50:21,820 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:50:21" (1/1) ... [2021-02-24 04:50:21,827 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:50:21" (1/1) ... [2021-02-24 04:50:21,827 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:50:21" (1/1) ... [2021-02-24 04:50:21,834 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:50:21" (1/1) ... [2021-02-24 04:50:21,839 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:50:21" (1/1) ... [2021-02-24 04:50:21,841 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:50:21" (1/1) ... [2021-02-24 04:50:21,844 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 04:50:21,845 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 04:50:21,845 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 04:50:21,846 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 04:50:21,846 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:50:21" (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 [2021-02-24 04:50:21,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 04:50:21,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 04:50:21,946 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 04:50:21,946 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-24 04:50:21,946 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-24 04:50:21,946 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 04:50:21,946 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 04:50:21,946 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 04:50:21,947 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 04:50:21,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 04:50:21,947 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-24 04:50:21,947 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-24 04:50:21,947 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 04:50:21,948 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 04:50:21,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 04:50:21,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 04:50:21,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 04:50:21,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 04:50:21,948 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 04:50:21,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 04:50:22,409 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 04:50:22,410 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-24 04:50:22,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:50:22 BoogieIcfgContainer [2021-02-24 04:50:22,412 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 04:50:22,414 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 04:50:22,414 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 04:50:22,417 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 04:50:22,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 04:50:21" (1/3) ... [2021-02-24 04:50:22,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ba2cf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:50:22, skipping insertion in model container [2021-02-24 04:50:22,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:50:21" (2/3) ... [2021-02-24 04:50:22,419 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ba2cf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:50:22, skipping insertion in model container [2021-02-24 04:50:22,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:50:22" (3/3) ... [2021-02-24 04:50:22,421 INFO L111 eAbstractionObserver]: Analyzing ICFG sumt7.c [2021-02-24 04:50:22,428 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 04:50:22,432 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 04:50:22,453 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 04:50:22,481 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 04:50:22,481 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 04:50:22,482 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 04:50:22,482 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 04:50:22,482 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 04:50:22,482 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 04:50:22,482 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 04:50:22,483 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 04:50:22,501 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2021-02-24 04:50:22,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-02-24 04:50:22,513 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:50:22,514 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:50:22,514 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:50:22,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:50:22,522 INFO L82 PathProgramCache]: Analyzing trace with hash -1439556865, now seen corresponding path program 1 times [2021-02-24 04:50:22,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:50:22,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [646498063] [2021-02-24 04:50:22,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:50:22,618 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:50:22,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:50:22,990 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:22,992 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:50:22,993 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:22,994 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:50:23,015 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:23,016 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:50:23,027 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:23,028 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 04:50:23,042 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:23,043 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:50:23,060 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:23,062 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 04:50:23,081 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:23,083 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 04:50:23,105 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:23,107 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-24 04:50:23,133 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:23,135 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-24 04:50:23,165 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:23,167 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 04:50:23,215 WARN L141 QuantifierPusher]: treesize reduction 32, result has 83.0 percent of original size [2021-02-24 04:50:23,224 WARN L147 QuantifierPusher]: treesize reduction 32, result has 83.0 percent of original size 156 [2021-02-24 04:50:23,348 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:23,349 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:50:23,384 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:23,384 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:50:23,395 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:23,396 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:50:23,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:50:23,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:50:23,452 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:23,452 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:50:23,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:50:23,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [646498063] [2021-02-24 04:50:23,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:50:23,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-24 04:50:23,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551778770] [2021-02-24 04:50:23,477 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-24 04:50:23,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:50:23,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-24 04:50:23,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-02-24 04:50:23,497 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 15 states. [2021-02-24 04:50:24,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:50:24,815 INFO L93 Difference]: Finished difference Result 168 states and 229 transitions. [2021-02-24 04:50:24,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-24 04:50:24,817 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 34 [2021-02-24 04:50:24,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:50:24,832 INFO L225 Difference]: With dead ends: 168 [2021-02-24 04:50:24,833 INFO L226 Difference]: Without dead ends: 119 [2021-02-24 04:50:24,840 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=190, Invalid=566, Unknown=0, NotChecked=0, Total=756 [2021-02-24 04:50:24,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-02-24 04:50:24,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 57. [2021-02-24 04:50:24,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2021-02-24 04:50:24,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 63 transitions. [2021-02-24 04:50:24,937 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 63 transitions. Word has length 34 [2021-02-24 04:50:24,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:50:24,939 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 63 transitions. [2021-02-24 04:50:24,939 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-02-24 04:50:24,939 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 63 transitions. [2021-02-24 04:50:24,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-02-24 04:50:24,943 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:50:24,945 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:50:24,946 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 04:50:24,946 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:50:24,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:50:24,949 INFO L82 PathProgramCache]: Analyzing trace with hash 804824585, now seen corresponding path program 1 times [2021-02-24 04:50:24,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:50:24,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1218418577] [2021-02-24 04:50:24,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:50:29,498 WARN L202 SmtUtils]: Spent 4.49 s on a formula simplification. DAG size of input: 538 DAG size of output: 246 [2021-02-24 04:50:29,511 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.loopaccelerator.AcceleratorWernerOverapprox.accelerateLoop(AcceleratorWernerOverapprox.java:55) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolationCore.acceleratedInterpolationCoreIsCorrect(AcceleratedInterpolationCore.java:183) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:162) 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:511) 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: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) [2021-02-24 04:50:29,516 INFO L168 Benchmark]: Toolchain (without parser) took 8117.51 ms. Allocated memory was 151.0 MB in the beginning and 222.3 MB in the end (delta: 71.3 MB). Free memory was 126.7 MB in the beginning and 166.5 MB in the end (delta: -39.8 MB). Peak memory consumption was 123.2 MB. Max. memory is 8.0 GB. [2021-02-24 04:50:29,517 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 125.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 04:50:29,518 INFO L168 Benchmark]: CACSL2BoogieTranslator took 386.36 ms. Allocated memory is still 151.0 MB. Free memory was 125.5 MB in the beginning and 115.7 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-24 04:50:29,519 INFO L168 Benchmark]: Boogie Preprocessor took 37.78 ms. Allocated memory is still 151.0 MB. Free memory was 115.7 MB in the beginning and 114.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-24 04:50:29,520 INFO L168 Benchmark]: RCFGBuilder took 566.56 ms. Allocated memory is still 151.0 MB. Free memory was 114.2 MB in the beginning and 128.4 MB in the end (delta: -14.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2021-02-24 04:50:29,521 INFO L168 Benchmark]: TraceAbstraction took 7100.21 ms. Allocated memory was 151.0 MB in the beginning and 222.3 MB in the end (delta: 71.3 MB). Free memory was 127.9 MB in the beginning and 166.5 MB in the end (delta: -38.6 MB). Peak memory consumption was 124.5 MB. Max. memory is 8.0 GB. [2021-02-24 04:50:29,526 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 125.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 386.36 ms. Allocated memory is still 151.0 MB. Free memory was 125.5 MB in the beginning and 115.7 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 37.78 ms. Allocated memory is still 151.0 MB. Free memory was 115.7 MB in the beginning and 114.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 566.56 ms. Allocated memory is still 151.0 MB. Free memory was 114.2 MB in the beginning and 128.4 MB in the end (delta: -14.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 7100.21 ms. Allocated memory was 151.0 MB in the beginning and 222.3 MB in the end (delta: 71.3 MB). Free memory was 127.9 MB in the beginning and 166.5 MB in the end (delta: -38.6 MB). Peak memory consumption was 124.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.loopaccelerator.AcceleratorWernerOverapprox.accelerateLoop(AcceleratorWernerOverapprox.java:55) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...