/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/array-fpi/s4iff.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 04:46:49,163 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 04:46:49,166 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 04:46:49,199 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-24 04:46:49,200 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-24 04:46:49,201 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-24 04:46:49,203 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-24 04:46:49,205 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-24 04:46:49,215 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-24 04:46:49,216 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-24 04:46:49,218 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-24 04:46:49,219 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-24 04:46:49,219 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 04:46:49,220 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 04:46:49,222 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 04:46:49,223 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 04:46:49,224 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 04:46:49,225 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 04:46:49,227 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 04:46:49,229 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 04:46:49,231 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 04:46:49,232 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 04:46:49,233 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 04:46:49,234 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 04:46:49,238 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-24 04:46:49,247 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 04:46:49,248 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 04:46:49,248 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 04:46:49,252 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 04:46:49,265 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 04:46:49,265 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 04:46:49,267 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 04:46:49,267 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 04:46:49,267 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 04:46:49,268 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 04:46:49,268 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 04:46:49,268 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 04:46:49,268 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 04:46:49,269 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 04:46:49,269 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 04:46:49,274 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 04:46:49,274 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 04:46:49,274 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 04:46:49,275 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 04:46:49,275 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 04:46:49,275 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 04:46:49,275 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 04:46:49,275 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 04:46:49,275 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 04:46:49,276 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 04:46:49,276 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 04:46:49,276 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 04:46:49,276 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 04:46:49,698 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 04:46:49,723 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 04:46:49,728 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 04:46:49,730 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 04:46:49,730 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 04:46:49,731 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s4iff.c [2021-02-24 04:46:49,828 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cffaadac/75d73eec588c48efb470a1f1ae831e1f/FLAG6456a60d2 [2021-02-24 04:46:50,463 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 04:46:50,464 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/s4iff.c [2021-02-24 04:46:50,472 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cffaadac/75d73eec588c48efb470a1f1ae831e1f/FLAG6456a60d2 [2021-02-24 04:46:50,839 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cffaadac/75d73eec588c48efb470a1f1ae831e1f [2021-02-24 04:46:50,844 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 04:46:50,856 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 04:46:50,859 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 04:46:50,859 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 04:46:50,863 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 04:46:50,864 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:46:50" (1/1) ... [2021-02-24 04:46:50,865 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@643cbeb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:50, skipping insertion in model container [2021-02-24 04:46:50,866 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:46:50" (1/1) ... [2021-02-24 04:46:50,874 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 04:46:50,892 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 04:46:51,037 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/s4iff.c[588,601] [2021-02-24 04:46:51,057 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:46:51,066 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 04:46:51,080 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/s4iff.c[588,601] [2021-02-24 04:46:51,089 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:46:51,106 INFO L208 MainTranslator]: Completed translation [2021-02-24 04:46:51,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:51 WrapperNode [2021-02-24 04:46:51,107 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 04:46:51,108 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 04:46:51,108 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 04:46:51,108 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 04:46:51,121 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:51" (1/1) ... [2021-02-24 04:46:51,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:51" (1/1) ... [2021-02-24 04:46:51,130 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:51" (1/1) ... [2021-02-24 04:46:51,130 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:51" (1/1) ... [2021-02-24 04:46:51,139 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:51" (1/1) ... [2021-02-24 04:46:51,147 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:51" (1/1) ... [2021-02-24 04:46:51,149 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:51" (1/1) ... [2021-02-24 04:46:51,154 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 04:46:51,155 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 04:46:51,155 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 04:46:51,156 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 04:46:51,156 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:51" (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 04:46:51,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 04:46:51,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 04:46:51,258 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 04:46:51,258 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-24 04:46:51,258 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-24 04:46:51,258 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 04:46:51,259 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 04:46:51,259 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 04:46:51,259 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 04:46:51,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 04:46:51,259 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-24 04:46:51,259 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-24 04:46:51,260 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 04:46:51,260 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-24 04:46:51,260 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 04:46:51,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-24 04:46:51,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 04:46:51,261 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 04:46:51,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 04:46:51,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 04:46:51,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 04:46:51,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 04:46:51,715 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 04:46:51,716 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-02-24 04:46:51,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:46:51 BoogieIcfgContainer [2021-02-24 04:46:51,724 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 04:46:51,730 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 04:46:51,731 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 04:46:51,735 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 04:46:51,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 04:46:50" (1/3) ... [2021-02-24 04:46:51,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44491b34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:46:51, skipping insertion in model container [2021-02-24 04:46:51,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:51" (2/3) ... [2021-02-24 04:46:51,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44491b34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:46:51, skipping insertion in model container [2021-02-24 04:46:51,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:46:51" (3/3) ... [2021-02-24 04:46:51,746 INFO L111 eAbstractionObserver]: Analyzing ICFG s4iff.c [2021-02-24 04:46:51,763 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 04:46:51,774 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 04:46:51,811 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 04:46:51,836 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 04:46:51,836 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 04:46:51,837 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 04:46:51,837 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 04:46:51,837 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 04:46:51,837 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 04:46:51,837 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 04:46:51,838 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 04:46:51,854 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states. [2021-02-24 04:46:51,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-24 04:46:51,865 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:46:51,866 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, 1, 1] [2021-02-24 04:46:51,866 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:46:51,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:46:51,873 INFO L82 PathProgramCache]: Analyzing trace with hash 137751759, now seen corresponding path program 1 times [2021-02-24 04:46:51,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:46:51,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [658884161] [2021-02-24 04:46:51,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:46:51,965 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:46:52,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:52,117 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:52,118 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:52,120 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:52,120 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:52,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:46:52,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:52,189 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:52,189 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:52,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-24 04:46:52,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:52,198 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:52,199 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:52,211 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 04:46:52,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [658884161] [2021-02-24 04:46:52,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:46:52,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-24 04:46:52,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498534027] [2021-02-24 04:46:52,221 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-24 04:46:52,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:46:52,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-24 04:46:52,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 04:46:52,240 INFO L87 Difference]: Start difference. First operand 71 states. Second operand 3 states. [2021-02-24 04:46:52,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:46:52,413 INFO L93 Difference]: Finished difference Result 119 states and 132 transitions. [2021-02-24 04:46:52,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-24 04:46:52,415 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2021-02-24 04:46:52,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:46:52,424 INFO L225 Difference]: With dead ends: 119 [2021-02-24 04:46:52,424 INFO L226 Difference]: Without dead ends: 58 [2021-02-24 04:46:52,428 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 04:46:52,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-02-24 04:46:52,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-02-24 04:46:52,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2021-02-24 04:46:52,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 60 transitions. [2021-02-24 04:46:52,485 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 60 transitions. Word has length 36 [2021-02-24 04:46:52,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:46:52,486 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 60 transitions. [2021-02-24 04:46:52,486 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-24 04:46:52,487 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 60 transitions. [2021-02-24 04:46:52,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-24 04:46:52,489 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:46:52,489 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, 1, 1] [2021-02-24 04:46:52,490 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 04:46:52,490 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:46:52,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:46:52,491 INFO L82 PathProgramCache]: Analyzing trace with hash 1632327928, now seen corresponding path program 1 times [2021-02-24 04:46:52,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:46:52,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [322576797] [2021-02-24 04:46:52,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:46:52,501 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:46:52,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:52,648 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:52,650 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:52,652 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:52,652 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:46:52,663 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:52,665 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:46:52,673 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:52,694 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:52,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:46:52,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:52,748 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:52,748 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:52,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-24 04:46:52,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:52,758 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:52,758 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:52,763 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 04:46:52,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [322576797] [2021-02-24 04:46:52,764 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:46:52,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-24 04:46:52,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991714717] [2021-02-24 04:46:52,766 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-24 04:46:52,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:46:52,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-24 04:46:52,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-24 04:46:52,768 INFO L87 Difference]: Start difference. First operand 58 states and 60 transitions. Second operand 5 states. [2021-02-24 04:46:52,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:46:52,969 INFO L93 Difference]: Finished difference Result 104 states and 110 transitions. [2021-02-24 04:46:52,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-24 04:46:52,970 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2021-02-24 04:46:52,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:46:52,972 INFO L225 Difference]: With dead ends: 104 [2021-02-24 04:46:52,972 INFO L226 Difference]: Without dead ends: 79 [2021-02-24 04:46:52,974 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-02-24 04:46:52,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-02-24 04:46:52,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 60. [2021-02-24 04:46:52,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2021-02-24 04:46:52,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2021-02-24 04:46:52,990 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 36 [2021-02-24 04:46:52,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:46:52,990 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2021-02-24 04:46:52,990 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-24 04:46:52,991 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2021-02-24 04:46:52,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-02-24 04:46:52,993 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:46:52,993 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:46:52,993 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 04:46:52,993 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:46:52,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:46:52,994 INFO L82 PathProgramCache]: Analyzing trace with hash -881259695, now seen corresponding path program 1 times [2021-02-24 04:46:52,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:46:52,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [923391257] [2021-02-24 04:46:52,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:46:53,017 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:53,031 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-24 04:46:53,039 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:53,042 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-24 04:46:53,050 WARN L141 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-02-24 04:46:53,064 WARN L147 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size 13 [2021-02-24 04:46:53,069 WARN L141 QuantifierPusher]: treesize reduction 14, result has 68.2 percent of original size [2021-02-24 04:46:53,074 WARN L147 QuantifierPusher]: treesize reduction 14, result has 68.2 percent of original size 30 [2021-02-24 04:46:53,075 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-02-24 04:46:53,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:53,274 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:53,275 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:53,277 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:53,278 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:46:53,282 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:53,284 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-24 04:46:53,292 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:53,293 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-24 04:46:53,302 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:53,303 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-24 04:46:53,311 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:53,312 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-24 04:46:53,326 WARN L141 QuantifierPusher]: treesize reduction 6, result has 72.7 percent of original size [2021-02-24 04:46:53,327 WARN L147 QuantifierPusher]: treesize reduction 6, result has 72.7 percent of original size 16 [2021-02-24 04:46:53,339 WARN L141 QuantifierPusher]: treesize reduction 6, result has 81.8 percent of original size [2021-02-24 04:46:53,340 WARN L147 QuantifierPusher]: treesize reduction 6, result has 81.8 percent of original size 27 [2021-02-24 04:46:53,356 WARN L141 QuantifierPusher]: treesize reduction 6, result has 81.8 percent of original size [2021-02-24 04:46:53,357 WARN L147 QuantifierPusher]: treesize reduction 6, result has 81.8 percent of original size 27 [2021-02-24 04:46:53,375 WARN L141 QuantifierPusher]: treesize reduction 24, result has 48.9 percent of original size [2021-02-24 04:46:53,376 WARN L147 QuantifierPusher]: treesize reduction 24, result has 48.9 percent of original size 23 [2021-02-24 04:46:53,394 WARN L141 QuantifierPusher]: treesize reduction 49, result has 43.7 percent of original size [2021-02-24 04:46:53,396 WARN L147 QuantifierPusher]: treesize reduction 49, result has 43.7 percent of original size 38 [2021-02-24 04:46:53,432 WARN L141 QuantifierPusher]: treesize reduction 15, result has 53.1 percent of original size [2021-02-24 04:46:53,433 WARN L147 QuantifierPusher]: treesize reduction 15, result has 53.1 percent of original size 17 [2021-02-24 04:46:53,451 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:53,452 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 04:46:53,470 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:53,471 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-24 04:46:53,485 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:53,485 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 04:46:53,498 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:53,498 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 04:46:53,511 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:53,511 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:46:53,524 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:53,525 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:46:53,538 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:53,538 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:53,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:46:53,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:53,586 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:53,586 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:53,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-24 04:46:53,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:53,591 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:53,591 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:53,601 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 04:46:53,604 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:53,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:46:53,614 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:53,617 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-02-24 04:46:53,619 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-02-24 04:46:53,684 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:53,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:46:53,686 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:53,688 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-02-24 04:46:53,689 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-02-24 04:46:53,742 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:53,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:46:53,746 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:53,748 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-02-24 04:46:53,750 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-02-24 04:46:53,817 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:53,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:46:53,819 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:53,820 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-02-24 04:46:53,822 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-02-24 04:46:53,873 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:53,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:46:53,878 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:53,879 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-02-24 04:46:53,881 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-02-24 04:46:53,939 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:53,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:46:53,944 WARN L141 QuantifierPusher]: treesize reduction 2, result has 96.0 percent of original size [2021-02-24 04:46:53,946 WARN L147 QuantifierPusher]: treesize reduction 2, result has 96.0 percent of original size 48 [2021-02-24 04:46:53,947 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-02-24 04:46:54,004 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:54,005 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:54,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [923391257] [2021-02-24 04:46:54,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:46:54,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-02-24 04:46:54,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360969870] [2021-02-24 04:46:54,007 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-02-24 04:46:54,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:46:54,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-02-24 04:46:54,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=530, Unknown=15, NotChecked=0, Total=650 [2021-02-24 04:46:54,010 INFO L87 Difference]: Start difference. First operand 60 states and 62 transitions. Second operand 24 states. [2021-02-24 04:46:55,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:46:55,179 INFO L93 Difference]: Finished difference Result 96 states and 100 transitions. [2021-02-24 04:46:55,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-02-24 04:46:55,180 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 53 [2021-02-24 04:46:55,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:46:55,182 INFO L225 Difference]: With dead ends: 96 [2021-02-24 04:46:55,182 INFO L226 Difference]: Without dead ends: 90 [2021-02-24 04:46:55,183 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=196, Invalid=1118, Unknown=18, NotChecked=0, Total=1332 [2021-02-24 04:46:55,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-02-24 04:46:55,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 78. [2021-02-24 04:46:55,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2021-02-24 04:46:55,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 82 transitions. [2021-02-24 04:46:55,202 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 82 transitions. Word has length 53 [2021-02-24 04:46:55,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:46:55,202 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 82 transitions. [2021-02-24 04:46:55,202 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2021-02-24 04:46:55,202 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 82 transitions. [2021-02-24 04:46:55,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-02-24 04:46:55,204 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:46:55,205 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:46:55,205 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 04:46:55,205 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:46:55,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:46:55,206 INFO L82 PathProgramCache]: Analyzing trace with hash -1326966967, now seen corresponding path program 1 times [2021-02-24 04:46:55,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:46:55,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [152402187] [2021-02-24 04:46:55,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:46:55,210 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:55,212 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-24 04:46:55,214 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:55,215 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-24 04:46:55,218 WARN L141 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-02-24 04:46:55,220 WARN L147 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size 13 [2021-02-24 04:46:55,223 WARN L141 QuantifierPusher]: treesize reduction 14, result has 68.2 percent of original size [2021-02-24 04:46:55,224 WARN L147 QuantifierPusher]: treesize reduction 14, result has 68.2 percent of original size 30 [2021-02-24 04:46:55,225 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-02-24 04:46:55,239 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2021-02-24 04:46:55,240 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-24 04:46:55,244 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-24 04:46:55,262 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-02-24 04:46:55,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 04:46:55 BoogieIcfgContainer [2021-02-24 04:46:55,262 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 04:46:55,264 INFO L168 Benchmark]: Toolchain (without parser) took 4417.81 ms. Allocated memory was 156.2 MB in the beginning and 200.3 MB in the end (delta: 44.0 MB). Free memory was 131.9 MB in the beginning and 133.0 MB in the end (delta: -1.1 MB). Peak memory consumption was 44.2 MB. Max. memory is 8.0 GB. [2021-02-24 04:46:55,264 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 156.2 MB. Free memory was 128.8 MB in the beginning and 128.7 MB in the end (delta: 100.5 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 04:46:55,265 INFO L168 Benchmark]: CACSL2BoogieTranslator took 248.05 ms. Allocated memory is still 156.2 MB. Free memory was 130.9 MB in the beginning and 120.3 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-24 04:46:55,266 INFO L168 Benchmark]: Boogie Preprocessor took 46.26 ms. Allocated memory is still 156.2 MB. Free memory was 120.3 MB in the beginning and 118.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-24 04:46:55,267 INFO L168 Benchmark]: RCFGBuilder took 569.38 ms. Allocated memory is still 156.2 MB. Free memory was 118.7 MB in the beginning and 134.3 MB in the end (delta: -15.6 MB). Peak memory consumption was 19.1 MB. Max. memory is 8.0 GB. [2021-02-24 04:46:55,267 INFO L168 Benchmark]: TraceAbstraction took 3532.11 ms. Allocated memory was 156.2 MB in the beginning and 200.3 MB in the end (delta: 44.0 MB). Free memory was 133.8 MB in the beginning and 133.0 MB in the end (delta: 827.9 kB). Peak memory consumption was 46.0 MB. Max. memory is 8.0 GB. [2021-02-24 04:46:55,270 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 156.2 MB. Free memory was 128.8 MB in the beginning and 128.7 MB in the end (delta: 100.5 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 248.05 ms. Allocated memory is still 156.2 MB. Free memory was 130.9 MB in the beginning and 120.3 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 46.26 ms. Allocated memory is still 156.2 MB. Free memory was 120.3 MB in the beginning and 118.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 569.38 ms. Allocated memory is still 156.2 MB. Free memory was 118.7 MB in the beginning and 134.3 MB in the end (delta: -15.6 MB). Peak memory consumption was 19.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3532.11 ms. Allocated memory was 156.2 MB in the beginning and 200.3 MB in the end (delta: 44.0 MB). Free memory was 133.8 MB in the beginning and 133.0 MB in the end (delta: 827.9 kB). Peak memory consumption was 46.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 15]: 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: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND FALSE !(!cond) [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] sum[0] = 1 [L32] i=0 [L32] COND TRUE i