/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-new/count_by_k.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-1a84f73 [2021-05-01 07:23:17,814 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-01 07:23:17,816 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-01 07:23:17,853 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-01 07:23:17,863 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-01 07:23:17,864 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-01 07:23:17,865 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-01 07:23:17,866 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-01 07:23:17,867 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-01 07:23:17,868 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-01 07:23:17,870 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-01 07:23:17,871 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-01 07:23:17,873 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-01 07:23:17,874 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-01 07:23:17,891 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-01 07:23:17,892 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-01 07:23:17,894 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-01 07:23:17,901 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-01 07:23:17,901 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-01 07:23:17,902 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-01 07:23:17,909 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2021-05-01 07:23:17,921 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-01 07:23:17,921 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-01 07:23:17,922 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-01 07:23:17,922 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-01 07:23:17,922 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-01 07:23:17,923 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-01 07:23:17,923 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-01 07:23:17,923 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-01 07:23:17,923 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-01 07:23:17,923 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-01 07:23:17,923 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-01 07:23:17,923 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-01 07:23:17,924 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-01 07:23:17,924 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-01 07:23:17,924 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-01 07:23:17,924 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-01 07:23:17,924 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-01 07:23:17,924 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-01 07:23:17,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-01 07:23:17,925 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-01 07:23:17,925 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-05-01 07:23:17,925 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-01 07:23:17,925 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-05-01 07:23:17,925 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-01 07:23:18,170 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-01 07:23:18,186 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-01 07:23:18,188 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-01 07:23:18,188 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-01 07:23:18,189 INFO L275 PluginConnector]: CDTParser initialized [2021-05-01 07:23:18,190 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/count_by_k.i [2021-05-01 07:23:18,239 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/937faf783/ab4dfbaf128d4c3ebd51193735369e1d/FLAGe842a46a5 [2021-05-01 07:23:18,581 INFO L306 CDTParser]: Found 1 translation units. [2021-05-01 07:23:18,582 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-new/count_by_k.i [2021-05-01 07:23:18,587 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/937faf783/ab4dfbaf128d4c3ebd51193735369e1d/FLAGe842a46a5 [2021-05-01 07:23:18,598 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/937faf783/ab4dfbaf128d4c3ebd51193735369e1d [2021-05-01 07:23:18,600 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-01 07:23:18,602 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-01 07:23:18,603 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-01 07:23:18,603 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-01 07:23:18,605 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-01 07:23:18,606 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 07:23:18" (1/1) ... [2021-05-01 07:23:18,607 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bf450c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:23:18, skipping insertion in model container [2021-05-01 07:23:18,607 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 07:23:18" (1/1) ... [2021-05-01 07:23:18,612 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-01 07:23:18,621 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-01 07:23:18,729 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-new/count_by_k.i[891,904] [2021-05-01 07:23:18,738 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-01 07:23:18,745 INFO L203 MainTranslator]: Completed pre-run [2021-05-01 07:23:18,761 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-new/count_by_k.i[891,904] [2021-05-01 07:23:18,764 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-01 07:23:18,778 INFO L208 MainTranslator]: Completed translation [2021-05-01 07:23:18,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:23:18 WrapperNode [2021-05-01 07:23:18,780 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-01 07:23:18,780 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-01 07:23:18,780 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-01 07:23:18,780 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-01 07:23:18,797 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:23:18" (1/1) ... [2021-05-01 07:23:18,797 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:23:18" (1/1) ... [2021-05-01 07:23:18,804 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:23:18" (1/1) ... [2021-05-01 07:23:18,805 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:23:18" (1/1) ... [2021-05-01 07:23:18,827 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:23:18" (1/1) ... [2021-05-01 07:23:18,831 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:23:18" (1/1) ... [2021-05-01 07:23:18,836 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:23:18" (1/1) ... [2021-05-01 07:23:18,841 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-01 07:23:18,842 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-01 07:23:18,842 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-01 07:23:18,842 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-01 07:23:18,844 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:23:18" (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 [2021-05-01 07:23:18,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-01 07:23:18,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-01 07:23:18,904 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-01 07:23:18,904 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-01 07:23:18,904 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-01 07:23:18,905 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-01 07:23:18,905 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-01 07:23:18,905 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-01 07:23:18,905 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-05-01 07:23:18,905 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-05-01 07:23:18,905 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-01 07:23:18,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-01 07:23:18,905 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-01 07:23:18,906 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-01 07:23:18,906 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-01 07:23:18,906 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-01 07:23:18,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-01 07:23:18,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-01 07:23:18,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-01 07:23:18,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-01 07:23:18,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-01 07:23:18,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-01 07:23:19,124 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-01 07:23:19,124 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-01 07:23:19,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 07:23:19 BoogieIcfgContainer [2021-05-01 07:23:19,136 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-01 07:23:19,137 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-01 07:23:19,137 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-01 07:23:19,139 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-01 07:23:19,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.05 07:23:18" (1/3) ... [2021-05-01 07:23:19,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38d06b66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 07:23:19, skipping insertion in model container [2021-05-01 07:23:19,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:23:18" (2/3) ... [2021-05-01 07:23:19,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38d06b66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 07:23:19, skipping insertion in model container [2021-05-01 07:23:19,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 07:23:19" (3/3) ... [2021-05-01 07:23:19,141 INFO L111 eAbstractionObserver]: Analyzing ICFG count_by_k.i [2021-05-01 07:23:19,145 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-05-01 07:23:19,147 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-01 07:23:19,175 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-01 07:23:19,193 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-01 07:23:19,194 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-01 07:23:19,194 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-05-01 07:23:19,194 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-01 07:23:19,194 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-01 07:23:19,194 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-01 07:23:19,194 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-01 07:23:19,194 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-01 07:23:19,203 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 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) [2021-05-01 07:23:19,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-01 07:23:19,207 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:23:19,208 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:23:19,208 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:23:19,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:23:19,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1676006891, now seen corresponding path program 1 times [2021-05-01 07:23:19,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:23:19,217 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [270071100] [2021-05-01 07:23:19,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:23:19,258 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 07:23:19,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:23:19,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:19,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:23:19,397 INFO L142 QuantifierPusher]: treesize reduction 7, result has 75.0 percent of original size [2021-05-01 07:23:19,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 07:23:19,458 INFO L142 QuantifierPusher]: treesize reduction 15, result has 63.4 percent of original size [2021-05-01 07:23:19,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 07:23:19,476 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:19,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:23:19,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:19,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:23:19,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:19,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:23:19,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:23:19,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:23:19,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:19,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:23:19,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:23:19,579 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:23:19,580 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [270071100] [2021-05-01 07:23:19,582 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [270071100] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:23:19,582 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:23:19,582 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-01 07:23:19,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265491007] [2021-05-01 07:23:19,591 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-01 07:23:19,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:23:19,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-01 07:23:19,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-05-01 07:23:19,603 INFO L87 Difference]: Start difference. First operand has 21 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 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 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 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) [2021-05-01 07:23:19,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:23:19,985 INFO L93 Difference]: Finished difference Result 43 states and 51 transitions. [2021-05-01 07:23:19,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-01 07:23:19,987 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 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 12 [2021-05-01 07:23:19,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:23:19,991 INFO L225 Difference]: With dead ends: 43 [2021-05-01 07:23:19,991 INFO L226 Difference]: Without dead ends: 16 [2021-05-01 07:23:19,993 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 341.2ms TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-05-01 07:23:20,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-05-01 07:23:20,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2021-05-01 07:23:20,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 3 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) [2021-05-01 07:23:20,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-05-01 07:23:20,041 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2021-05-01 07:23:20,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:23:20,042 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-05-01 07:23:20,042 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 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) [2021-05-01 07:23:20,042 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-05-01 07:23:20,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-05-01 07:23:20,043 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:23:20,043 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:23:20,044 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-01 07:23:20,045 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:23:20,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:23:20,046 INFO L82 PathProgramCache]: Analyzing trace with hash 1072109235, now seen corresponding path program 1 times [2021-05-01 07:23:20,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:23:20,046 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1463338305] [2021-05-01 07:23:20,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:23:20,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:20,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 07:23:20,089 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_10 (* 1000000 v_main_~k~0_11)) InVars {main_~i~0=v_main_~i~0_10, main_~k~0=v_main_~k~0_11} OutVars{main_~i~0=v_main_~i~0_10, main_~k~0=v_main_~k~0_11} AuxVars[] AssignedVars[] [2021-05-01 07:23:20,112 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size [2021-05-01 07:23:20,118 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:20,137 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:20,143 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:20,147 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:20,153 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:23:20,156 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:23:20,157 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 07:23:20,161 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:20,170 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:20,174 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:20,177 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:20,179 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:23:20,180 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-01 07:23:20,190 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:20,195 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:20,202 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:22,261 WARN L205 SmtUtils]: Spent 2.06 s on a formula simplification that was a NOOP. DAG size: 12 [2021-05-01 07:23:22,261 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:22,266 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:22,271 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:22,275 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:22,276 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 07:23:22,280 INFO L118 tifierPushTermWalker]: treesize reduction 3, result has 25.0 percent of original size [2021-05-01 07:23:22,284 INFO L108 tifierPushTermWalker]: treesize reduction 8, result has 11.1 percent of original size [2021-05-01 07:23:22,290 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:22,293 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:22,297 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:22,300 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:22,304 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-05-01 07:23:22,354 INFO L142 QuantifierPusher]: treesize reduction 18, result has 75.7 percent of original size [2021-05-01 07:23:22,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:23:22,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:22,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 07:23:22,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-05-01 07:23:22,383 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:22,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:23:22,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:22,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 07:23:22,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-05-01 07:23:22,388 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:23:22,398 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2021-05-01 07:23:22,398 INFO L620 BasicCegarLoop]: Counterexample might be feasible [2021-05-01 07:23:22,401 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-01 07:23:22,414 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-05-01 07:23:22,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.05 07:23:22 BoogieIcfgContainer [2021-05-01 07:23:22,414 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-01 07:23:22,415 INFO L168 Benchmark]: Toolchain (without parser) took 3813.26 ms. Allocated memory is still 205.5 MB. Free memory was 171.0 MB in the beginning and 162.0 MB in the end (delta: 9.0 MB). Peak memory consumption was 10.4 MB. Max. memory is 8.0 GB. [2021-05-01 07:23:22,415 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 205.5 MB. Free memory is still 187.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-01 07:23:22,415 INFO L168 Benchmark]: CACSL2BoogieTranslator took 176.97 ms. Allocated memory is still 205.5 MB. Free memory was 171.0 MB in the beginning and 161.4 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-05-01 07:23:22,416 INFO L168 Benchmark]: Boogie Preprocessor took 60.42 ms. Allocated memory is still 205.5 MB. Free memory was 161.4 MB in the beginning and 189.2 MB in the end (delta: -27.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-05-01 07:23:22,416 INFO L168 Benchmark]: RCFGBuilder took 293.97 ms. Allocated memory is still 205.5 MB. Free memory was 189.2 MB in the beginning and 175.0 MB in the end (delta: 14.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-05-01 07:23:22,416 INFO L168 Benchmark]: TraceAbstraction took 3276.94 ms. Allocated memory is still 205.5 MB. Free memory was 175.0 MB in the beginning and 162.0 MB in the end (delta: 13.1 MB). Peak memory consumption was 14.6 MB. Max. memory is 8.0 GB. [2021-05-01 07:23:22,418 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 205.5 MB. Free memory is still 187.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 176.97 ms. Allocated memory is still 205.5 MB. Free memory was 171.0 MB in the beginning and 161.4 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 60.42 ms. Allocated memory is still 205.5 MB. Free memory was 161.4 MB in the beginning and 189.2 MB in the end (delta: -27.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 293.97 ms. Allocated memory is still 205.5 MB. Free memory was 189.2 MB in the beginning and 175.0 MB in the end (delta: 14.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3276.94 ms. Allocated memory is still 205.5 MB. Free memory was 175.0 MB in the beginning and 162.0 MB in the end (delta: 13.1 MB). Peak memory consumption was 14.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L25] int i; [L26] int k; [L27] k = __VERIFIER_nondet_int() [L28] COND FALSE !(!(0 <= k && k <= 10)) [L29] i = 0 [L29] COND TRUE i < 1000000*k [L29] i += k [L29] COND FALSE !(i < 1000000*k) [L30] CALL __VERIFIER_assert(i == 1000000*k) [L18] COND TRUE !(cond) [L19] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 3209.9ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 7.5ms, AutomataDifference: 401.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 6.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 17 SDtfs, 31 SDslu, 26 SDs, 0 SdLazy, 60 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 90.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 341.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 17.1ms AutomataMinimizationTime, 1 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...