/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-zilu/benchmark10_conjunctive.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-a47f07a [2021-04-16 07:57:44,748 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-16 07:57:44,750 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-16 07:57:44,779 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-04-16 07:57:44,794 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-04-16 07:57:44,796 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-04-16 07:57:44,797 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-04-16 07:57:44,799 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-04-16 07:57:44,801 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-04-16 07:57:44,802 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-04-16 07:57:44,803 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-04-16 07:57:44,807 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-04-16 07:57:44,808 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-04-16 07:57:44,809 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-04-16 07:57:44,810 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-04-16 07:57:44,811 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-04-16 07:57:44,816 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-04-16 07:57:44,823 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-16 07:57:44,823 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-16 07:57:44,823 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-16 07:57:44,827 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 07:57:44,838 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-16 07:57:44,839 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-16 07:57:44,841 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-16 07:57:44,841 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-16 07:57:44,842 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-16 07:57:44,842 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-16 07:57:44,842 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-16 07:57:44,842 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-16 07:57:44,842 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-16 07:57:44,842 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-16 07:57:44,843 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-16 07:57:44,843 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-16 07:57:44,843 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-16 07:57:44,843 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-16 07:57:44,843 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-16 07:57:44,843 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-16 07:57:44,843 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-16 07:57:44,844 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-16 07:57:44,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-16 07:57:44,844 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-16 07:57:44,844 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-04-16 07:57:44,844 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-04-16 07:57:44,844 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-04-16 07:57:44,844 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-16 07:57:45,130 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-16 07:57:45,163 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-16 07:57:45,165 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-16 07:57:45,166 INFO L271 PluginConnector]: Initializing CDTParser... [2021-04-16 07:57:45,166 INFO L275 PluginConnector]: CDTParser initialized [2021-04-16 07:57:45,167 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-zilu/benchmark10_conjunctive.i [2021-04-16 07:57:45,252 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9c4764ec/63ee72efceba497699175e959aa1f961/FLAG9f7fbf277 [2021-04-16 07:57:45,580 INFO L306 CDTParser]: Found 1 translation units. [2021-04-16 07:57:45,581 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark10_conjunctive.i [2021-04-16 07:57:45,585 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9c4764ec/63ee72efceba497699175e959aa1f961/FLAG9f7fbf277 [2021-04-16 07:57:45,599 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9c4764ec/63ee72efceba497699175e959aa1f961 [2021-04-16 07:57:45,601 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-16 07:57:45,602 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-04-16 07:57:45,606 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-04-16 07:57:45,606 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-04-16 07:57:45,609 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-04-16 07:57:45,609 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.04 07:57:45" (1/1) ... [2021-04-16 07:57:45,610 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12e4bfcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:57:45, skipping insertion in model container [2021-04-16 07:57:45,610 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.04 07:57:45" (1/1) ... [2021-04-16 07:57:45,617 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-04-16 07:57:45,627 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-04-16 07:57:45,721 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-zilu/benchmark10_conjunctive.i[873,886] [2021-04-16 07:57:45,727 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-16 07:57:45,731 INFO L203 MainTranslator]: Completed pre-run [2021-04-16 07:57:45,742 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-zilu/benchmark10_conjunctive.i[873,886] [2021-04-16 07:57:45,744 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-16 07:57:45,752 INFO L208 MainTranslator]: Completed translation [2021-04-16 07:57:45,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:57:45 WrapperNode [2021-04-16 07:57:45,753 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-04-16 07:57:45,754 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-16 07:57:45,754 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-16 07:57:45,754 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-16 07:57:45,767 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:57:45" (1/1) ... [2021-04-16 07:57:45,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:57:45" (1/1) ... [2021-04-16 07:57:45,771 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:57:45" (1/1) ... [2021-04-16 07:57:45,771 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:57:45" (1/1) ... [2021-04-16 07:57:45,774 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:57:45" (1/1) ... [2021-04-16 07:57:45,776 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:57:45" (1/1) ... [2021-04-16 07:57:45,776 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:57:45" (1/1) ... [2021-04-16 07:57:45,787 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-16 07:57:45,801 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-16 07:57:45,801 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-16 07:57:45,801 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-16 07:57:45,802 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:57:45" (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 07:57:45,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-04-16 07:57:45,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-16 07:57:45,850 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-04-16 07:57:45,850 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-04-16 07:57:45,850 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-04-16 07:57:45,850 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-04-16 07:57:45,850 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-04-16 07:57:45,850 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-04-16 07:57:45,851 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-04-16 07:57:45,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-04-16 07:57:45,851 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-04-16 07:57:45,851 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2021-04-16 07:57:45,851 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-04-16 07:57:45,852 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-04-16 07:57:45,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-04-16 07:57:45,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-04-16 07:57:45,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-16 07:57:45,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-04-16 07:57:45,853 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-04-16 07:57:45,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-04-16 07:57:46,061 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-16 07:57:46,061 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-04-16 07:57:46,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.04 07:57:46 BoogieIcfgContainer [2021-04-16 07:57:46,062 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-16 07:57:46,063 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-16 07:57:46,063 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-16 07:57:46,065 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-16 07:57:46,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.04 07:57:45" (1/3) ... [2021-04-16 07:57:46,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@604bab2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.04 07:57:46, skipping insertion in model container [2021-04-16 07:57:46,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:57:45" (2/3) ... [2021-04-16 07:57:46,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@604bab2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.04 07:57:46, skipping insertion in model container [2021-04-16 07:57:46,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.04 07:57:46" (3/3) ... [2021-04-16 07:57:46,067 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark10_conjunctive.i [2021-04-16 07:57:46,087 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-04-16 07:57:46,090 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-16 07:57:46,104 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-04-16 07:57:46,128 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-16 07:57:46,129 INFO L377 AbstractCegarLoop]: Hoare is true [2021-04-16 07:57:46,129 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-04-16 07:57:46,129 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-16 07:57:46,129 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-16 07:57:46,129 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-16 07:57:46,129 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-16 07:57:46,129 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-16 07:57:46,141 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 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 07:57:46,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-04-16 07:57:46,146 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 07:57:46,146 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 07:57:46,146 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 07:57:46,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 07:57:46,152 INFO L82 PathProgramCache]: Analyzing trace with hash -1360020621, now seen corresponding path program 1 times [2021-04-16 07:57:46,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 07:57:46,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2136019047] [2021-04-16 07:57:46,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 07:57:46,204 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 07:57:46,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 07:57:46,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:46,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:57:46,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:46,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 07:57:46,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:46,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:57:46,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 07:57:46,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 07:57:46,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:46,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:57:46,372 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 07:57:46,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2136019047] [2021-04-16 07:57:46,374 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 07:57:46,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-04-16 07:57:46,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100681064] [2021-04-16 07:57:46,377 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-16 07:57:46,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 07:57:46,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-16 07:57:46,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-04-16 07:57:46,388 INFO L87 Difference]: Start difference. First operand has 21 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 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 2.0) internal successors, (8), 3 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) [2021-04-16 07:57:46,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 07:57:46,464 INFO L93 Difference]: Finished difference Result 38 states and 47 transitions. [2021-04-16 07:57:46,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-16 07:57:46,465 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 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 [2021-04-16 07:57:46,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 07:57:46,469 INFO L225 Difference]: With dead ends: 38 [2021-04-16 07:57:46,469 INFO L226 Difference]: Without dead ends: 16 [2021-04-16 07:57:46,471 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 66.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-04-16 07:57:46,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-04-16 07:57:46,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2021-04-16 07:57:46,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 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) [2021-04-16 07:57:46,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-04-16 07:57:46,493 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 12 [2021-04-16 07:57:46,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 07:57:46,493 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-04-16 07:57:46,493 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 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) [2021-04-16 07:57:46,493 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2021-04-16 07:57:46,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-04-16 07:57:46,493 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 07:57:46,494 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 07:57:46,494 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-16 07:57:46,494 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 07:57:46,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 07:57:46,494 INFO L82 PathProgramCache]: Analyzing trace with hash 824422544, now seen corresponding path program 1 times [2021-04-16 07:57:46,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 07:57:46,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [873286439] [2021-04-16 07:57:46,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 07:57:46,497 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 07:57:46,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 07:57:46,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:46,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:57:46,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:46,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 07:57:46,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:46,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 07:57:46,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:46,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:57:46,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 07:57:46,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 07:57:46,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:46,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:57:46,542 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 07:57:46,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [873286439] [2021-04-16 07:57:46,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 07:57:46,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-16 07:57:46,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728498346] [2021-04-16 07:57:46,543 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-16 07:57:46,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 07:57:46,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-16 07:57:46,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-04-16 07:57:46,544 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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 07:57:46,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 07:57:46,598 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2021-04-16 07:57:46,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-16 07:57:46,598 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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 13 [2021-04-16 07:57:46,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 07:57:46,599 INFO L225 Difference]: With dead ends: 20 [2021-04-16 07:57:46,599 INFO L226 Difference]: Without dead ends: 15 [2021-04-16 07:57:46,600 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 50.6ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-04-16 07:57:46,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-04-16 07:57:46,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-04-16 07:57:46,604 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) [2021-04-16 07:57:46,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-04-16 07:57:46,604 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2021-04-16 07:57:46,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 07:57:46,604 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-04-16 07:57:46,605 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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 07:57:46,605 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-04-16 07:57:46,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-04-16 07:57:46,605 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 07:57:46,605 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 07:57:46,605 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-16 07:57:46,605 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 07:57:46,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 07:57:46,606 INFO L82 PathProgramCache]: Analyzing trace with hash -181933682, now seen corresponding path program 1 times [2021-04-16 07:57:46,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 07:57:46,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1964919457] [2021-04-16 07:57:46,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 07:57:46,626 INFO L142 QuantifierPusher]: treesize reduction 1, result has 94.7 percent of original size [2021-04-16 07:57:46,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-16 07:57:46,635 INFO L175 rdanLoopAcceleration]: Guard: Formula: (and (< 0 (+ v_main_~i~0_10 1)) (< v_main_~i~0_10 100)) InVars {main_~i~0=v_main_~i~0_10} OutVars{main_~i~0=v_main_~i~0_10} AuxVars[] AssignedVars[] [2021-04-16 07:57:46,657 WARN L240 tifierPushTermWalker]: treesize reduction 35, result has 86.6 percent of original size [2021-04-16 07:57:46,671 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:46,674 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:46,678 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:46,681 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:46,685 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:46,690 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:46,700 INFO L725 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-04-16 07:57:46,703 INFO L732 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:46,704 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:46,712 INFO L108 tifierPushTermWalker]: treesize reduction 4, result has 20.0 percent of original size [2021-04-16 07:57:46,713 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 07:57:46,722 INFO L108 tifierPushTermWalker]: treesize reduction 9, result has 10.0 percent of original size [2021-04-16 07:57:46,723 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 07:57:46,725 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 07:57:46,729 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:46,731 INFO L725 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-04-16 07:57:46,733 INFO L732 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:46,734 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:46,740 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 07:57:46,742 INFO L108 tifierPushTermWalker]: treesize reduction 6, result has 14.3 percent of original size [2021-04-16 07:57:46,826 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 07:57:46,989 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2021-04-16 07:57:46,989 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:47,002 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 07:57:47,022 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:47,042 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-04-16 07:57:47,060 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 07:57:47,076 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:47,100 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:47,122 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:47,149 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:47,185 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:47,223 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:47,260 INFO L108 tifierPushTermWalker]: treesize reduction 13, result has 7.1 percent of original size [2021-04-16 07:57:47,269 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:47,296 INFO L725 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-04-16 07:57:47,305 INFO L732 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:47,306 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:47,316 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:47,327 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 07:57:47,331 INFO L108 tifierPushTermWalker]: treesize reduction 4, result has 20.0 percent of original size [2021-04-16 07:57:47,333 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 07:57:47,334 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-04-16 07:57:47,342 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:47,344 INFO L725 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-04-16 07:57:47,345 INFO L732 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:47,346 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:47,351 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 07:57:47,352 INFO L108 tifierPushTermWalker]: treesize reduction 6, result has 14.3 percent of original size [2021-04-16 07:57:47,356 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 07:57:47,357 INFO L108 tifierPushTermWalker]: treesize reduction 9, result has 10.0 percent of original size [2021-04-16 07:57:47,358 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-04-16 07:57:47,360 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:47,361 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-04-16 07:57:47,367 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:47,370 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:47,375 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:47,378 INFO L108 tifierPushTermWalker]: treesize reduction 14, result has 6.7 percent of original size [2021-04-16 07:57:47,381 INFO L108 tifierPushTermWalker]: treesize reduction 9, result has 10.0 percent of original size [2021-04-16 07:57:47,385 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:47,393 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:47,428 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:47,430 WARN L245 tifierPushTermWalker]: treesize reduction 35, result has 86.6 percent of original size 226 [2021-04-16 07:57:47,994 WARN L205 SmtUtils]: Spent 563.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2021-04-16 07:57:47,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:48,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 209 [2021-04-16 07:57:48,001 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-04-16 07:57:48,010 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2021-04-16 07:57:48,010 INFO L620 BasicCegarLoop]: Counterexample might be feasible [2021-04-16 07:57:48,012 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-04-16 07:57:48,019 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-04-16 07:57:48,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.04 07:57:48 BoogieIcfgContainer [2021-04-16 07:57:48,020 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-16 07:57:48,020 INFO L168 Benchmark]: Toolchain (without parser) took 2417.94 ms. Allocated memory is still 166.7 MB. Free memory was 132.3 MB in the beginning and 127.4 MB in the end (delta: 4.8 MB). Peak memory consumption was 5.5 MB. Max. memory is 8.0 GB. [2021-04-16 07:57:48,021 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 166.7 MB. Free memory was 148.7 MB in the beginning and 148.6 MB in the end (delta: 79.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-04-16 07:57:48,021 INFO L168 Benchmark]: CACSL2BoogieTranslator took 146.91 ms. Allocated memory is still 166.7 MB. Free memory was 132.1 MB in the beginning and 147.9 MB in the end (delta: -15.8 MB). Peak memory consumption was 9.6 MB. Max. memory is 8.0 GB. [2021-04-16 07:57:48,021 INFO L168 Benchmark]: Boogie Preprocessor took 33.28 ms. Allocated memory is still 166.7 MB. Free memory was 147.9 MB in the beginning and 151.0 MB in the end (delta: -3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-04-16 07:57:48,022 INFO L168 Benchmark]: RCFGBuilder took 261.55 ms. Allocated memory is still 166.7 MB. Free memory was 151.0 MB in the beginning and 136.9 MB in the end (delta: 14.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-04-16 07:57:48,022 INFO L168 Benchmark]: TraceAbstraction took 1956.49 ms. Allocated memory is still 166.7 MB. Free memory was 136.4 MB in the beginning and 127.4 MB in the end (delta: 8.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-04-16 07:57:48,023 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 166.7 MB. Free memory was 148.7 MB in the beginning and 148.6 MB in the end (delta: 79.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 146.91 ms. Allocated memory is still 166.7 MB. Free memory was 132.1 MB in the beginning and 147.9 MB in the end (delta: -15.8 MB). Peak memory consumption was 9.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 33.28 ms. Allocated memory is still 166.7 MB. Free memory was 147.9 MB in the beginning and 151.0 MB in the end (delta: -3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 261.55 ms. Allocated memory is still 166.7 MB. Free memory was 151.0 MB in the beginning and 136.9 MB in the end (delta: 14.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1956.49 ms. Allocated memory is still 166.7 MB. Free memory was 136.4 MB in the beginning and 127.4 MB in the end (delta: 8.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 16]: 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: [L20] int i = __VERIFIER_nondet_int(); [L21] int c = __VERIFIER_nondet_int(); [L22] COND FALSE !(!(c==0 && i==0)) [L23] COND TRUE i<100 [L24] c=c+i [L25] i=i+1 [L26] COND FALSE !(i<=0) [L23] COND FALSE !(i<100) [L28] CALL __VERIFIER_assert(c>=0) [L15] COND TRUE !cond [L16] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 1888.5ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 8.0ms, AutomataDifference: 149.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 32 SDtfs, 28 SDslu, 18 SDs, 0 SdLazy, 33 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 44.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 116.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 16.8ms AutomataMinimizationTime, 2 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...